研究者詳細 - 安藤　義人

論文 - 安藤　義人

分割表示185 件中 21 - 40 件目／全件表示 >>

Upcycling mine tailings into functional materials for environmental remediation and energy storage applications 査読有り国際誌

Peter R.N.A., Zheng A.L.T., Koo L.F., Wong T.J., Andou Y.

International Journal of Energy and Water Resources 2025年01月

担当区分：最終著者記述言語：英語掲載種別：記事・総説・解説・論説等（学術雑誌）

Mine tailings (MT), a byproduct of mining operations, often pose significant environmental and economic challenges. Traditional disposal methods often lead to contamination of water bodies, soil, and air, negatively impacting ecosystems and human health. To address these issues, this review explores the potential of transforming MT into valuable functional materials through a waste-to-value approach. By employing various modification strategies, the physicochemical properties of MT can be significantly improved, unlocking their potential for diverse applications. This review investigates the conversion of tailings into functional materials for wastewater treatment and energy applications. Additionally, the study highlights recent advancements in the recovery of functional materials from MT, identifying key challenges and opportunities for future research and development. This review contributes to a more circular economy and sustainable mining practices by exploring the potential of MT-derived functional materials.

DOI： 10.1007/s42108-025-00391-7

その他リンク： https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=105011183071&origin=inward

Recent progress in functional materials for electrochemical detection of pesticides: modification strategies, performance, and future challenges 査読有り国際誌

Zheng A.L.T., Teo E.Y.L., Hung Y.P., Saad J.M., Zamakshshari N.H., Chung E.L.T., Farid M.A.A., Andou Y.

Analytical Sciences 2025年01月

担当区分：最終著者記述言語：英語掲載種別：記事・総説・解説・論説等（学術雑誌）

Widespread pesticides use in agriculture has led to significant groundwater and food contamination, posing severe risks to both human health and the environment. Real-time detection of these emerging contaminants remains a formidable challenge. Electrochemical sensors and biosensors have remained a viable technique for overcoming the limits ascribed to their ultra-sensitivity and rapid detection times as well as excellent sensitivity, reliability, and selectivity. This comprehensive review will encompass the most recent advancements in the utilization of functional materials such as metal–organic framework, MXene, carbon organic framework, carbon nanotubes, and graphene modifiers for the detection of a myriad of pesticides via electrochemical detection techniques, electrode materials, electrolyte solutions, and sample matrices. This review compiles performance data, including detection limits and linear ranges, for various sensing platforms. Finally, the write-up will discuss advanced sensor technology and address the improvements made on electrochemical sensors and biosensors for pesticide detection, which will be important in future studies on pesticide determination.

DOI： 10.1007/s44211-025-00838-1

その他リンク： https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=105013767776&origin=inward

Boosting the Performance of Organic Phototransistors Utilizing Oriented Thin-Films of Liquid Crystalline Conjugated Polymer PBTTT C-14 査読有り国際誌

Ramer S.G., Gaurav K.V., Palani I.A., Ando Y., Pandey S.S., Singh V.

Physica Status Solidi Rapid Research Letters 2025年01月

記述言語：英語掲載種別：研究論文（学術雑誌）

To improve the organic field-effect transistor (OFET) performance, the advantages of the unidirectional floating film transfer method (UFTM) are utilized to fabricate uniaxially aligned thin film of a liquid crystalline semiconducting polymer (SCP) upon a SiO<inf>2</inf> surface modified with a self-assembled monolayer (SAM) of alkyl-silane. We deposited the SAM of octadecyl-triethoxy silane (OTES) by spin coating onto the SiO<inf>2</inf> gate dielectric surface to make the surface hydrophobic and promote the molecular self-assembly of aligned SCP. The electrical anisotropy of the UFTM fabricated thin films of poly [2,5-bis (3-tetradecylthiophen-2-yl) thieno [3,2-b] thiophene] (PBTTT) C-14 were studied by constructing parallel and perpendicular OFETs. Parallel OFET exhibits a mobility of 0.13 cm<sup>2</sup> V<sup>−1</sup>sec<sup>−1</sup>, a dark on-off ratio of 2.6 × 10<sup>5</sup>, and 0V V<inf>th</inf>. Further, OFETs are utilized as organic phototransistors (OPTs) under monochromatic green light (525 nm) illumination at an intensity of 3 mWcm<sup>−2</sup>. The photosensitivity and responsivity of parallel OPT are 6.3 × 10<sup>4</sup> and 81 AW<sup>−1</sup>, respectively, which are much more pronounced compared to that of the corresponding perpendicular OPT with the photosensitivity and responsivity of 2 × 10<sup>2</sup> and 6.2 AW<sup>−1</sup>, respectively. This work contributes to the advancement of organic photodetector technology, offering valuable guidance for future device development and applications.

DOI： 10.1002/pssr.202500011

その他リンク： https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=105007347215&origin=inward

Energy-efficient and improved productivity of cellulose nanofibril processing in wet disc mill by regulating the cellulose degree of polymerization 査読有り国際誌

Megashah L.N., Ariffin H., Zakaria M.R., Andou Y., Hassan M.A., Yasim-Anuar T.A.T.

Industrial Crops and Products 222 2024年12月

記述言語：英語掲載種別：研究論文（学術雑誌）

This research highlights the use of superheated steam (SHS) treatment to improve the productivity and reduce the energy consumption of CNF processing. SHS treatment conducted at 150°C for 1 and 2 h (SHS1 and SHS2) contributed to the reduction in degree of polymerization (DP) of cellulose from oil palm empty fruit bunch. Results exhibited that SHS-treatment reduced the viscosity and number of cycles for CNF processing compared to the untreated cellulose (UT). At the end of wet disc mill processing, CNF-SHS2 viscosity was measured at 60 cP, almost five-fold lesser than that of CNF-UT. The productivity of CNF-SHS2 production improved by almost eight-fold compared to CNF-UT, and the energy consumed to produce CNFSHS2 reduced from 60.5 to 7.4 kWh/kg. All CNF samples produced had an average width of about 10 nm and crystallinity between 54 – 62 %. Our results showed that treatment of cellulose by SHS prior to nanofibrillation contributed to energy efficient nanofibrillation process with improved productivity. The potential energy neutral SHS treatment is demonstrated herein by integrating the energy resource available at the palm oil industry towards sustainable CNF production which would promote the commercial potential of this versatile bio-based material.

DOI： 10.1016/j.indcrop.2024.119861

その他リンク： https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85206914066&origin=inward

Practical role of oil palm fronds in Malaysia's sustainable palm oil industry 査読有り国際誌

Zakaria M.R., Ahmad Farid M.A., Hafid H.S., Andou Y., Hassan M.A.

Industrial Crops and Products 222 2024年12月

記述言語：英語掲載種別：研究論文（学術雑誌）

In the pursuit of sustainability, oil palm frond (OPF) is emerging as an important renewable resource in Malaysia's thriving palm oil industry, presenting both opportunities and challenges. This review presents an in-depth assessment of the current landscape of the Malaysian palm oil industry, emphasizing the abundance of OPF, logistical difficulties, and current and future potential industrial uses. Amidst the industry's phenomenal expansion, the generation of OPF was estimated at 59.3 and 156.5 million tonnes in 2023 from Malaysia and Indonesia, respectively. Implementing existing and new policies can fully capitalize on the socioeconomic and ecological benefits of integrating OPF into the palm oil supply chain. This offers several advantages, including economic growth, environmental and sustainability practices, resource optimization, support for innovation and commercialization, energy diversification, and investment attraction. The future of OPF utilization in Malaysia lies in developing more valuable applications and improving integrated biomass techniques. Emerging technologies like enzymatic hydrolysis, lignocellulosic fractionation, biosugars, bioethanol, ruminant feed, and biochar production offer great potential to unlock OPF's full benefits. However, technological hurdles and limited industrial implementation continue to hamper the widespread adoption of these innovative solutions. Future research for enhancing the efficiency of conversion processes, evaluating the economic viability of OPF-based products, and investigating the environmental impacts of OPF valorization would be crucial in unlocking the full potential of this abundant and promising biomass resource.

DOI： 10.1016/j.indcrop.2024.119753

その他リンク： https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85205736536&origin=inward

A novel compatibilizer obtained from olive pomace oil maleate (OPOMA) and evaluation in PLA composite production 査読有り国際誌

Göktepeli G., Kawano T., Andou Y., Yel E.

Environmental Research and Technology 7 ( 4 ) 530 - 536 2024年12月

記述言語：英語掲載種別：研究論文（学術雑誌）

Alternative of using organic and biomass residues as additives or reinforcements in the production of composite materials has attracted great attention since the 2000s. However, when lignocellulosic biomass is used as natural fiber in composite production, it may have some disadvantages such as low interfacial bonding with the matrix phase. The most common methods used to strengthen the bonding between the matrix phase and the additive material is to use maleic anhydride (MA) as a compatibilizer and some chemicals such as dicumyl peroxide (DCP) as reaction initiators to increase the compatibilizing effect of MA. Therefore, in this study, olive pomace oil maleate (OPOMA) was prepared to be used in the production of polylactic acid (PLA) composites. Olive pomace obtained with ionic liquid pretreatment (OP-IL) in the previous studies of the authors and OPOMA were used in composite production with a biodegradable polymer of PLA. The composite was obtained by mixing 95PLA+5OP-IL by weight in twin-screw extruder at 190 oC for 10 minutes. Under the same conditions, the effect of OPOMA was evaluated by adding 0.5%, 1% and 2% ratio to PLA + OP-IL. In FTIR spectrum of OPOMA, a new symmetrical and asymmetric C=O bands were formed differently from olive oil. While the tensile strength of the PLA+OP mixture was approximately 10 MPa; the tensile strength value of PLA+OP-IL and PLA+OP-IL+OPOMA was around 60 MPa. The elasticity modulus showed less change compared to other mechanical properties. To conclude, it can be emphasized that oil maleates of lignocellulosic biomasses can be promising compatibilizer for biodegradable composite matrices.

DOI： 10.35208/ert.1452018

その他リンク： https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85209201969&origin=inward

Behaviour and mechanics of phenolic sorption by novel bio-based graphene derivatives as adsorbents 査読有り国際誌

Ahmad Farid M.A., Lease J., Andou Y.

Chemosphere 366 2024年10月

担当区分：責任著者記述言語：英語掲載種別：研究論文（学術雑誌）

Phenolic compounds, notorious for their environmental and health hazards, demand efficient removal from wastewater. Our research leads in synthesizing bio-based graphene derivatives from biomass-derived lignin, such as graphene oxide (bGO) and reduced graphene oxide (brGO), and these materials show promise in effectively removing hydrophobic pollutants like phenol and tannic acid. Hence, this study investigated the mechanical and dynamical aspects of their sorptions by bGO and brGO. Both adsorbents demonstrated a comparable adsorption pattern, with enhanced efficiency observed at higher adsorbent dosage, prolonged contact time, neutralized pH solutions, and elevated temperatures. Of note, phenol is removed at a much greater rate (>94%) than tannic acid (>84%) by both adsorbents at a dosage of 180 mg L−1, pH 6.5, 900 min, and 25 °C. The Freundlich model provided the best fit for the isotherm data of both phenol (R2 = 0.99) and tannic acid (R2 = 0.98), while the pseudo-second-order model effectively described the adsorption kinetics of phenol (R2 = 0.99) and tannic acid (R2 = 0.99). The determined activation energy exceeds 5.88 kJ mol−1, affirming the prevalence of physisorption as the dominant mechanism in the adsorption process. Thermodynamic analysis confirmed that the adsorption process is endothermic (ΔH) and occurs spontaneously (ΔG), indicating a random (ΔS) nature. However, the percentage removal plunged considerably after five consecutive adsorption-desorption cycles, attributed to the alterations of active sites on bGO and brGO.

DOI： 10.1016/j.chemosphere.2024.143490

その他リンク： https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85205535699&origin=inward

Lignocellulosic biomass-derived carbon quantum dots (CQDs): A novel approach utilizing organosolv lignin from Moso bamboo waste 査読有り国際誌

Ahmad Farid M.A., Lease J., Yoshito A.

Journal of Cleaner Production 467 2024年08月

担当区分：最終著者,　責任著者記述言語：英語掲載種別：研究論文（学術雑誌）

Converting lignocellulosic materials to carbon quantum dots (CQDs) has garnered significant interest to transform biomass wastes into highly valuable products. We chose to use lignin as our feedstock because high-value products more readily utilize cellulose and hemicellulose. Lignin, arguably the most underutilized and complex biopolymer within any biomass, presents an appealing yet overlooked opportunity. While some may argue that lignin-based CQDs are no longer groundbreaking, this is because existing studies typically rely on commercially available lignin, ignoring biomass-derived sources. Therefore, in our pioneering research, we utilized organosolv lignin, prized for its structural purity and extracted from Moso bamboo waste, as the carbon source in a facile two-step technique to synthesize luminous CQDs. The process involved the addition of 2,4-diaminobenzenesulfonic acid, a mild-organic acid that acted as a source for both nitrogen (N) and sulphur (S). A 12-h hydrothermal treatment at 200 °C with 0.1 M of acid addition attained the best result. The resultant CQDs display strong green fluorescence, with the highest quantum yield of 17.7% seen in N and S co-doped CQDs. With their obvious and specific fluorescence quenching impact on Fe3+, CQDs demonstrate great potential as a fluorescent nanoprobe for metal ion detection. This CQD nanoprobe responds very sensitively to Fe3+ between 0 and 500 μM (R2 = 0.9803), with a detection limit of 0.15 μM. This research not only presents a unique alternative nanoprobe for the sensing field using renewable biomass lignin, but it also paves the way for the long-term, cost-effective, and scalable manufacturing of CQDs.

DOI： 10.1016/j.jclepro.2024.142852

その他リンク： https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85196175354&origin=inward

Kinetics and thermodynamics in microwave-assisted transesterification of palm oil utilizing sulphonated bio-graphene catalysts for biodiesel production 査読有り国際誌

Farid M.A.A., Mohd Johari S.A., Lease J., Ayoub M., Andou Y.

Biomass and Bioenergy 185 2024年06月

担当区分：最終著者,　責任著者記述言語：英語掲載種別：研究論文（学術雑誌）

Enhanced reaction performance is what has piqued interest in using graphene-based catalysts in producing biodiesel. However, in-depth analyses were lacking from a kinetic and thermodynamic standpoint. This means that a well-designed experiment is necessary to determine the effect that the graphene catalysts have on the reaction rates and yields. This work addresses the kinetic and thermodynamic aspects of heterogeneously catalyzed transesterification using sulphonated biomass-derived graphene catalysts, i.e., bGO-SO3H and brGO-SO3H. It was accomplished using the pseudo-first order mechanism and the Eyring-Polanyi equation, with all data fitting satisfactorily in both models at the ideal reaction temperature of 353.15 K, resulting in R2 values of 0.9784 (bGO-SO3H) and 0.9884 (brGO-SO3H). The calculated activation energy (Ea) was determined to be 44.45 and 51.73 kJ mol-1 for bGO- and brGO-SO3H, respectively. Additionally, the Gibbs free energy (ΔG) values were determined at −38.09 and −31.81 kJ mol−1 for bGO- and brGO-SO3H, respectively. Meanwhile, the values for ΔH and ΔS were obtained as 41.69 kJ mol−1 and 225.93 J mol−1 K−1, respectively, and 48.96 kJ mol−1 and 228.72 J mol−1 K−1, respectively. These collective outcomes collectively signify the endothermic nature of the reaction and their spontaneity, particularly under elevated temperature conditions.

DOI： 10.1016/j.biombioe.2024.107236

その他リンク： https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85191653379&origin=inward

Clarifying the Dominant Role of Crystallinity and Molecular Orientation in Differently Processed Thin Films of Regioregular Poly(3-hexylthiophene) 査読有り国際誌

Gaurav K.V., Rai H., Singh K.R.B., Sharma S., Ando Y., Pandey S.S.

Micromachines 15 ( 6 ) 2024年06月

記述言語：英語掲載種別：研究論文（学術雑誌）

Conjugated polymers (CPs) offer the potential for sustainable semiconductor devices due to their low cost and inherent molecular self-assembly. Enhanced crystallinity and molecular orientation in thin films of solution-processable CPs have significantly improved organic electronic device performance. In this work, three methods, namely spin coating, dip coating, and unidirectional floating-film transfer method (UFTM), were utilized with their parametric optimization for fabricating RR-P3HT films. These films were then utilized for their characterization via optical and microstructural analysis to elucidate dominant roles of molecular orientation and crystallinity in controlling charge transport in organic field-effect transistors (OFETs). OFETs fabricated by RR-P3HT thin films using spin coating and dip coating displayed field-effect mobility (μ) of 8.0 × 10−4 cm2V−1s−1 and 1.3 × 10−3 cm2V−1s−1, respectively. This two-time enhancement in µ for dip-coated films was attributed to its enhanced crystallinity. Interestingly, UFTM film-based OFETs demonstrated μ of 7.0 × 10−2 cm2V−1s−1, >100 times increment as compared to its spin-coated counterpart. This superior device performance is attributed to the synergistic influence of higher crystallinity and molecular orientation. Since the crystallinity of dip-coated and UFTM-thin films are similar, ~50 times improved µ of UFTM thin films, this suggests a dominant role of molecular orientation as compared to crystallinity in controlling the charge transport.

DOI： 10.3390/mi15060677

その他リンク： https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85196877150&origin=inward

Optimization and kinetic studies for biodiesel production from dairy waste scum oil via microwave assisted transesterification 査読有り国際誌

Mohd Johari S.A., Ahmad Farid M.A., Ayoub M., Rashidi N.A., Andou Y.

Environmental Technology and Innovation 34 2024年05月

担当区分：最終著者,　責任著者記述言語：英語掲載種別：研究論文（学術雑誌）

This study presents an investigation of the optimization and kinetic aspects of the microwave (MW) heating transesterification process for converting dairy waste scum oil (DWSO) into biodiesel using lithium impregnated calcium oxide from eggshell (Li-ECaO) as a catalyst. The transesterification was done via microwave heating while varying catalyst loading (1 – 5 wt%), methanol to oil molar ratio (6 – 18:1), temperature (55 – 75⁰C), and reaction time in the range of 5 – 25 min. Response Surface Methodology (RSM) optimized the process parameters, yielding an impressive 90.5% biodiesel yield. The optimal operating conditions were determined 3 wt% catalyst loading, 18:1 methanol to oil molar ratio, a reaction temperature of 65ºC, and a reaction time of 25 minutes. A thorough kinetic analysis of the transesterification reaction for the MW heating transesterification of DWSO by Li-ECaO was performed at various temperatures (45 – 75ºC). The pseudo-first order kinetic study of the reaction revealed a moderately low activation energy of 38.86 kJ/mol and a high pre-exponential factor of 1141.27 s−1, which is consistent with previous studies. Importantly, the observed activation energy was lower than that of conventional methods, highlighting the potential of MW heating as a viable technique for future biodiesel production, and using wastes such as DWSO and eggshell could contribute to being greener and environmentally friendly.

DOI： 10.1016/j.eti.2024.103580

その他リンク： https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85186500478&origin=inward

Cow bone as reinforcement fillers in polymer composites for structural applications 査読有り国際誌

Norrrahim, M.N.F., Nurazzi, N.M., Knight, V.F. and 6 more

Polymer Composites Derived from Animal Sources 2024年04月

Palm oil expansion in Malaysia and its countermeasures through policy window and biorefinery approach 査読有り国際誌

Hassan M.A., Farid M.A.A., Zakaria M.R., Ariffin H., Andou Y., Shirai Y.

Environmental Science and Policy 153 2024年03月

担当区分：責任著者記述言語：英語掲載種別：記事・総説・解説・論説等（学術雑誌）

Time and again we hear of calls made by countries to ban palm oil over deforestation. Pressing on, the critics demand the commodity be certified as per international standards and the cultivation to comply with responsible agroecological practices. This urgent and growing concern requires the rethinking of the current operations to be restructured in such a way that it would be cleaner and greener. The Malaysian government has reaffirmed its commitment to mainstream palm oil sustainability by fully embracing United Nation Sustainable Development Goals (SDGs), following through on the 12th Malaysian Plan (2021–2025). Malaysian industry players and stakeholders also have joined hands to pursue the Roundtable on Sustainable Palm Oil (RSPO) and/or Malaysian Sustainable Palm Oil (MSPO) certification with full traceability, as part and parcel of corporate sustainability. However, downstream activities have yet to be improved. The biorefinery concept is proposed to utilize excess resources at plantations and the mills into a wide range of bioproducts and bioenergy in various applications. This review puts together the evidence of technological progress in oil palm biomass valorization, in line with the zero-emission system that will bring this to meet the circular bioeconomy agenda. Also, technological maturity and commercialization of oil palm biomass-derived products are scrutinized, underlining the challenges of the concept proposed.

DOI： 10.1016/j.envsci.2024.103671

その他リンク： https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85183480893&origin=inward

Fabrication of All-Polymer Organic Phototransistors Utilizing Oriented P3HT Thin Films Prepared by Unidirectional Floating Film Transfer Method 査読有り国際誌

Lahane T.K., Sharma S., Rai H., Desu M., Ando Y., Pandey S.S., Singh V.

IEEE Sensors Letters 8 ( 2 ) 1 - 4 2024年02月

記述言語：英語掲載種別：研究論文（学術雑誌）

High flexibility and solution processability have made all polymer organic pho-totransistors (AP-OPTs) a suitable candidate for various wearable and smart home applications. However, fabrication of the AP-OPTs via the solution process is still challenging owing to the possible degradation of the polymer gate dielectric layer by the solvent of the organic semiconductor, resulting in hampered device performance. To circumvent this issue, the unidirectional floating film transfer method, having the least impact on the underlying organic dielectric film, has been used to obtain highly oriented poly (3-hexylthiophene) (P3HT) thin film. Further, the effect of P3HT film orientation with respect to the channel has been investigated. Results revealed that the device with parallel orientation performed better with photosensitivity of 5 × 103 and photoresponsivity of 133 A/W.

DOI： 10.1109/LSENS.2023.3347760

その他リンク： https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85181571301&origin=inward

Recent advances in ultrasensitive electrochemical sensors and biosensors for determination of antibiotics in environment samples 査読有り国際誌

Zheng A.L.T., Teo E.Y.L., Yiu P.H., Boonyuen S., Chung E.L.T., Andou Y.

Clean Technologies and Environmental Policy 27 ( 2 ) 549 - 576 2024年01月

担当区分：最終著者記述言語：英語掲載種別：記事・総説・解説・論説等（学術雑誌）

Antibiotics have undeniably served as a crucial factor in protecting both human and animal populations from infections caused by bacteria. Electrochemical sensing has become a promising and developing alternative for measuring antibiotic residuals in various matrices such as environment and food. It is crucial to give priority to the advancement of technologies that have enhanced sensitivity and selectivity. Electrochemical sensors provide a more efficient and accurate method for detecting the presence of antibiotic compounds, as opposed to traditional laboratory detection procedures. This review seeks to offer an in-depth overview of the recent progress achieved in the past five years in detecting different antibiotics using a range of electrochemical sensors. These sensors include those based on MXene, MOF, graphene, and polymers. The fabrication and utilization of these sensors not only represent a substantial advancement in detection capacities but also create opportunities for tackling the challenges presented by antibiotic residues in the environment. This review also explores into the challenges, opportunities, and prospects associated with the aforementioned electrochemical sensors, offering a holistic perspective on their role in mitigating the environmental impacts of synthetic antibiotics. Graphical abstract: (Figure presented.)

DOI： 10.1007/s10098-024-02934-8

その他リンク： https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85199649302&origin=inward

Nanostructures embedded on porous materials for the catalytic reduction of nitrophenols: a concise review 査読有り国際誌

Zheng A.L.T., Teo E.Y.L., Seenivasagam S., Yiu P.H., Boonyuen S., Chung E.L.T., Lease J., Andou Y.

Journal of Porous Materials 31 ( 5 ) 1557 - 1575 2024年01月

担当区分：最終著者記述言語：英語掲載種別：研究論文（学術雑誌）

The reduction of nitrophenols is a broadly accepted model for catalytic processes. Incorporating nanostructures into porous materials is becoming more widely acknowledged for its great importance. This strategy has attracted much interest because of its exceptional features imparted on the catalysts, offering enormous promise in accelerating the reduction of nitrophenols. In recent years, various nanostructures have been embedded to a wide range of porous materials, such as carbon, silica, metal-organic frameworks, and other inorganic materials. These porous frameworks possess unique physical and chemical characteristics, making them well-suited for catalytic applications. This thorough review begins by explaining the mechanism of nitrophenol reduction, exploring several nanostructures based on noble metals that are commonly used for catalytic reduction. Following that, a systematic description and comparison of nitrophenols catalytic reduction using various nanostructures on porous templates such as carbon-based, silica-based, zeolite-based, polymer-based, and metal-organic frameworks (MOF) were explained. In addition, this paper also examines several functional materials to enhance the catalytic reduction of nitrophenols. Herein, this write-up intends to narrow the knowledge gap on the recently synthesized catalysts and the practical requirements for removing nitrophenol. This write-up is hoped to offer valuable insights that can aid in the practical utilization of these catalysts for wastewater remediation applications.

DOI： 10.1007/s10934-024-01618-4

その他リンク： https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85191698860&origin=inward

Emerging trends in functional materials for electrochemical sensors in nicotine determination 査読有り国際誌

Zheng A.L.T., Teo E.Y.L., Yiu P.H., Boonyuen S., Andou Y.

Analytical Sciences 40 ( 11 ) 1933 - 1946 2024年01月

担当区分：最終著者,　責任著者記述言語：英語掲載種別：記事・総説・解説・論説等（学術雑誌）

In the past year, there has been significant progress in the utilization of electrochemical strategies for the determination of harmful substances. Among those, the electrochemical determination of nicotine (NIC) has continued to be of significant interest ascribed to the global health concern of e-cigarette products, nowadays. Electrochemical sensors have become promising tools for the detection of NIC ascribed to their high sensitivity, selectivity, and ease of use. This review article provides a concise overview of the advanced developments in electrochemical sensors for NIC detection using modified functional materials such as carbon-based materials, metal–organic frameworks (MOF), MXene, polymer, and metallic based modifiers. The sensitivity of electrochemical sensors can be improved by modifying them with these conductive materials ascribed to their physical and chemical properties. The review also addresses the challenges and future perspectives in the field, including sensitivity and selectivity improvements, stability and reproducibility issues, integration with data analysis techniques, and emerging trends. In conclusion, this review article may be of interest to researchers intending to delve into the development of functional electrochemical sensors in future studies. Graphical Abstract: (Figure presented.).

DOI： 10.1007/s44211-024-00629-0

その他リンク： https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85198909110&origin=inward

Sustainable dye wastewater treatment: utilizing duckweed-derived adsorbents for efficient methylene blue removal 査読有り国際誌

Jeffrey K.B., Zheng A.L.T., Hii T.T., Seng K.W.K., Chung E.L.T., Lease J., Andou Y.

Biomass Conversion and Biorefinery 15 ( 12 ) 19157 - 19173 2024年01月

担当区分：最終著者記述言語：英語掲載種別：研究論文（学術雑誌）

Invasive plants threaten natural ecosystems due to their rapid spread and growth. This study used duckweed (DW) to develop a low-cost and sustainable adsorbent to remove methylene blue (MB) from aqueous solution. The adsorbent was analysed using various techniques. Fourier transform infrared spectroscopy (FT-IR) identified oxygen-containing functional groups on the DW surface that enhanced its adsorption capacity. Optimal adsorption conditions were achieved with an adsorbent amount of 20 mg, a pH of 10, and an initial MB concentration of 10 mg/L. Experimental data matched the pseudo-second-order (PSO) model across all concentrations, including 10 mg/L (Qe = 73.53 mg/g), 20 mg/L (Qe = 183.15 mg/g), and 50 mg/L (Qe = 200.80 mg/g). The Temkin isotherm model fit the data better than the Langmuir and Freundlich models. Adsorption decreased with increasing temperatures (ΔGo = − 7.56 to − 8.06 kJ/mol, ΔHo = − 4.93 kJ/mol, ΔSo = − 6.76 kJ/mol). The primary adsorption mechanisms included electrostatic interactions, hydrogen bonding, and π-π electron interactions. The production cost of the DW adsorbent was estimated at RM 14.40 per kg, making it a more affordable alternative. With its high adsorption capacity and wide availability, DW is a promising material for controlling dye pollution in wastewater.

DOI： 10.1007/s13399-024-06432-1

その他リンク： https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85212869591&origin=inward

Deposition of Transparent Ag Nanowires-Based Top Electrode for the Development of Double-Side Green Light Hybrid Photodetector 査読有り国際誌

Lahane T.K., Agrawal J., Ando Y., Pandey S.S., Singh V.

Physica Status Solidi (A) Applications and Materials Science 220 ( 24 ) 2023年12月

記述言語：英語掲載種別：研究論文（学術雑誌）

Herein, various silver nanowires (AgNWs) deposition techniques, i.e., spin coating, Mayer rod coating, and spray coating are used to fabricate ZnO/P3HT-based double-side hybrid photodetectors and their photoresponse for 520 nm green light has been compared. The electrodes are coated over the polyethylene terephthalate sheet separately and laminated over the indium tin oxide (ITO)/ZnO/P3HT. Mayer rod-coated electrodes are found to have a sheet resistance (Rsh) of 24 Ω Sq.−1 and a light transmission of 91%. Additionally, spin- and spray-coated AgNW electrodes exhibit Rsh of 20 and 23 Ω Sq.−1, respectively, along with 80% and 85% transparencies. As the device consists of transparent electrodes on both sides, it can detect light from both the top and bottom sides. Mayer rod-coated AgNW electrode-based device has produced better photosensitivity of 1500 (for ITO side illumination) and 630 (for AgNWs side illumination) at λ = 525 nm. Further, the device has demonstrated the responsivity of 124 mAW−1 and specific detectivity of 3 × 1011Jones.

DOI： 10.1002/pssa.202300166

その他リンク： https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85177197531&origin=inward

Structural Metamorphosis of Graphitic Derivatives Produced from Fractionated Bamboo Lignin 査読有り国際誌

Mohammed Abdillah Ahmad Farid, Jacqueline Lease, Alvin Lim Teik Zheng, Toshiki Tsubota, Yoshito Andou

ACS Sustainable Resource Management ( American Chemical Society (ACS) ) 1 97 - 113 2023年11月

　前のページ - 次のページ　

1
2
3
4
5
6
7
8
9
10