OHNO Teruhisa

写真a

Title

Professor

Laboratory

1-1 Sensui-cho, Tobata-ku, Kitakyushu-shi, Fukuoka

Research Fields, Keywords

photoctalysts, titanium dioxide, visibile light sensitivity, titania nanotube, carbon nanotube, thermoelectric device, Energy conversion

E-mail

E-mail address

Phone

+81-93-884-3318

Scopus Paper Info  
Total Paper Count: 0  Total Citation Count: 0  h-index: 28

Citation count denotes the number of citations in papers published for a particular year.

Undergraduate Education 【 display / non-display

  • 1983.03   Kyushu University   Faculty of Engineering   Graduated   JAPAN

Post Graduate Education 【 display / non-display

  • 1988.03  Kyushu University  Graduate School, Division of Engineering  Organic Chemistry  Doctoral Program  Completed  JAPAN

Degree 【 display / non-display

  • Kyushu University -  Doctor of Engineering  1988.03

Biography in Kyutech 【 display / non-display

  • 2020.04
    -
    Now

    Kyushu Institute of TechnologyFaculty of Engineering   Department of Materials Science   Professor  

  • 2020.04
    -
    Now

    Kyushu Institute of TechnologyFaculty of Engineering  

  • 2018.04
    -
    2020.03

    Kyushu Institute of Technology

  • 2018.04
    -
    2020.03

    Kyushu Institute of TechnologyFaculty of Engineering   Department of Materials Science   Professor  

  • 2008.04
    -
    2018.03

    Kyushu Institute of TechnologyFaculty of Engineering   Department of Materials Science   Professor  

Specialized Field (scientific research fund) 【 display / non-display

  • Green/Environmental chemistry

  • Nanomaterials chemistry

 

Publications (Article) 【 display / non-display

  • Accessing effects of aliphatic dicarboxylic acid towards the physical and chemical changes in low temperature hydrothermally reduced graphene hydrogel

    Zheng A.L.T., Boonyuen S., Ohno T., Andou Y.

    Journal of Porous Materials    28 ( 4 ) 1291 - 1300   2021.08  [Refereed]

     View Summary

    To date, studies pertaining the usage of aliphatic dicarboxylic acids (DCAs) in the preparation of graphene-based hydrogels are limited and mainly has been applied either as a reducing agent or cross-linkers. The modification of the hydrogels' properties can be achieved via the introduction of small amount of additive into the starting material, graphene oxide (GO). The facile synthetic protocol enables the impartation of desired properties to the graphene-based hydrogel as intended for their specific applications. In this study, the in-situ preparation of reduced graphene hydrogel (rGH) was carried out in the presence of a series of aliphatic DCAs namely oxalic acid (OA), malonic acid (MA), succinic acid (SA), glutaric acid (GA) and adipic acid (AA) in the GO reaction mixture via green hydrothermal method and freeze-drying. The as-prepared hydrogels were systematically characterized to probe the changes in their chemical and physical changes. Higher specific surface (SSA) of the hydrogel is obtained for shorter chain length DCAs. The FTIR and XPS results also indicated that shorter chain DCAs exhibited better reducing capability in the removal of oxygen functional groups. The C/O ratio obtained showed decrement with the increase in the chain length of the DCA. On the other hand, good dispersity was found for longer chain DCAs in polar solvent. Overall, this study should provide a comprehensive understanding on hydrothermally reduced graphene hydrogels prepared in the presence of dicarboxylic acids.

    DOI Scopus

  • Boosting visible-light-driven photocatalytic performance of waxberry-like CeO<inf>2</inf> by samarium doping and silver QDs anchoring

    Yang H., Xu B., Zhang Q., Yuan S., Zhang Z., Liu Y., Nan Z., Zhang M., Ohno T.

    Applied Catalysis B: Environmental    286   2021.06  [Refereed]

     View Summary

    In this work, waxberry-like CeO2 photocatalyst (denoted ASC) with prominent visible-light-driven photocatalytic performances for multi-model reactions was achieved by Sm doping and Ag quantum dots (QDs) anchoring. For instance, the as-fabricated ASC acquired 7.08-times and 6.83-times higher activities for CH3CHO removal and H2 production than those of pure CeO2 counterpart, respectively. The concentration of oxygen vacancies (Ov) in CeO2 is distinctly increased by Sm doping, resulting in a narrower bandgap of the Sm-doped CeO2 (SC). Under visible light irradiation, the Ov caused by doping can capture the photo-excited electrons and construct a doping-related transition state between the conduction band (CB) and the valence band (VB), which can effectively limit the recombination of photo-excited electrons and holes. These captured electrons further fleetly transfer to the co-catalytic sites of anchored Ag QDs, strengthening the absorption utilization for visible-light synchronously. The migration of charge carriers and proposed mechanisms were well elaborated by transient photovoltage (TPV), surface photovoltage (SPV) and density functional theory (DFT) calculation. It is hoped our work in this paper could provide potential and meaningful strategies for the design of noble metal quantum dots modified metal oxide semiconductors and facilitate their applications in other photocatalytic fields effectively.

    DOI Scopus

  • Author Correction: Atomically dispersed antimony on carbon nitride for the artificial photosynthesis of hydrogen peroxide (Nature Catalysis, (2021), 4, 5, (374-384), 10.1038/s41929-021-00605-1)

    Teng Z., Zhang Q., Yang H., Kato K., Yang W., Lu Y.R., Liu S., Wang C., Yamakata A., Su C., Liu B., Ohno T.

    Nature Catalysis    4 ( 6 )   2021.06  [Refereed]

    DOI Scopus

  • Atomically dispersed antimony on carbon nitride for the artificial photosynthesis of hydrogen peroxide

    Teng Z., Zhang Q., Yang H., Kato K., Yang W., Lu Y.R., Liu S., Wang C., Yamakata A., Su C., Liu B., Ohno T.

    Nature Catalysis    4 ( 5 ) 374 - 384   2021.05  [Refereed]

     View Summary

    Artificial photosynthesis offers a promising strategy to produce hydrogen peroxide (H2O2)—an environmentally friendly oxidant and a clean fuel. However, the low activity and selectivity of the two-electron oxygen reduction reaction (ORR) in the photocatalytic process greatly restricts the H2O2 production efficiency. Here we show a robust antimony single-atom photocatalyst (Sb-SAPC, single Sb atoms dispersed on carbon nitride) for the synthesis of H2O2 in a simple water and oxygen mixture under visible light irradiation. An apparent quantum yield of 17.6% at 420 nm together with a solar-to-chemical conversion efficiency of 0.61% for H2O2 synthesis was achieved. On the basis of time-dependent density function theory calculations, isotopic experiments and advanced spectroscopic characterizations, the photocatalytic performance is ascribed to the notably promoted two-electron ORR by forming μ-peroxide at the Sb sites and highly concentrated holes at the neighbouring N atoms. The in situ generated O2 via water oxidation is rapidly consumed by ORR, leading to boosted overall reaction kinetics. [Figure not available: see fulltext.]

    repository DOI Scopus

  • Photoexcited single metal atom catalysts for heterogeneous photocatalytic H<inf>2</inf>O<inf>2</inf> production: Pragmatic guidelines for predicting charge separation

    Teng Z., Cai W., Sim W., Zhang Q., Wang C., Su C., Ohno T.

    Applied Catalysis B: Environmental    282   2021.03  [Refereed]

     View Summary

    A systematic investigation of electronic configuration and excitation properties is extremely urgent for establishing a guideline to boost H2O2 production with metal single-atom photocatalysts (M-SAPCs). Herein, a series of metal-ion incorporated M-SAPCs was prepared, isolating of three transition metals (Fe, Co, Ni) and two main-group metals (In, Sn) single site by pyridinic N atoms in polymeric carbon nitride (PCN) skeleton. The models in which metal ions are isolated by non-defected g-C3N4 units (Melem_3M) are consistent with the practically prepared M-SAPC in terms of band structures and electronic configurations. Transition density and molecular orbital analysis revealed that the atomically dispersed In (III) and Sn (IV) significantly improve the charge separation with an ideal electronic configuration for the end-on adsorption of oxygen for a boosted 2e−. The experimental charge separation properties and photocatalytic activities of M-SAPC showed good accordance with the computed charge transfer profiles of Melem_3 M, manifesting the rationalities and validities of as-proposed guidelines.

    DOI Scopus

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Publications (Books) 【 display / non-display

  • Nanostructured Photocatalysis-Advanced Functional Materials

    ( Single Work )

    Springer, 1 New York Plaza, Suite 4500 New York, NY 10004-1562 USA  2016.07

  • Controlled Nanofabrication: Advances and Applications

    ( Single Work )

    Pan Stanford Publishing Pte. Ltd., Singapore  2012.07

Conference Prsentations (Oral, Poster) 【 display / non-display

  • Phoeoelectrochemical Synthesis of H2O2 via O2 Reduction using P-type CuBi2O4 or Cu3VS4 Electrodes

    T. Ohno  [Invited]

    The 3rd International Symposium on Recent Progress of Energy and Environmental Photocatalysis   2019.11  -  2019.11 

  • PHOTOELECTROCHEMICAL SYNTHESIS OF H2O2 VIA O2 REDUCTION USING p-TYPE CuBi2O4 ELECTRODE

    T. Ohno  [Invited]

    7th International Conference on Semiconductor Photochemistry  2019.09  -  2019.09 

  • ENHANCED CO-CATALYTIC PERFORMANCE OF GROUP V ELEMENTS FOR PHOTOCATALYTIC H2O2 PRODUCTION

    Teng Zhenyuan, T. Ohno

    7th International Conference on Semiconductor Photochemistry  2019.09  -  2019.09 

  • ベンジルアルコールの選択的酸化を指向した光触媒設計

    松永向志, 横野照尚

    2019年光化学討論会  2019.09  -  2019.09 

  • AgNi/TiO2によるCO2還元の生成物組成制御

    加世堂有,横野照尚

    2019年光化学討論会  2019.09  -  2019.09 

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Grants-in-Aid for Scientific Research 【 display / non-display

  • Development of TiO2 photo atalysts having superhydrophobicity and molecular recognition ability

    Grant-in-Aid for Scientific Research on Priority Areas

    Project Year:  2005.04  -  2007.03

    Project Number:  17029052

  • Development of visible light active functionalized metal oxide controled of surface structure

    Grant-in-Aid for Scientific Research(B)

    Project Year:  2003.04  -  2007.03

    Project Number:  15310091

  • Development of functionalized reaction sites by combination of transition metal compounds with titanium dioxide photocatalysts

    Grant-in-Aid for Exploratory Research

    Project Year:  2003.04  -  2006.03

    Project Number:  15651045

  • Development of visible light active S-doped TiO2 controled by surface structure

    Grant-in-Aid for Scientific Research on Priority Areas

    Project Year:  2003.04  -  2005.03

    Project Number:  15033240