World's Best Scientists 2026 revealed!
Takaharu Onishi

Takaharu Onishi

D-Index & Metrics

Chemistry

D-Index
56
Citations
12774
World Ranking
11521
National Ranking
853

Takaharu Onishi publication distribution in Chemistry in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Chemistry in 2026. The highlighted bar marks where Takaharu Onishi sits on this spectrum.

61–80 publications: 66 scientists 81–100 publications: 302 scientists 101–120 publications: 623 scientists 121–140 publications: 918 scientists 141–160 publications: 1,218 scientists 161–180 publications: 1,350 scientists 181–200 publications: 1,344 scientists 201–220 publications: 1,281 scientists 221–240 publications: 1,216 scientists 241–260 publications: 1,100 scientists 261–280 publications: 979 scientists 281–300 publications: 939 scientists 301–320 publications: 764 scientists 321–340 publications: 643 scientists 341–360 publications: 628 scientists 361–380 publications: 522 scientists 381–400 publications: 459 scientists 401–420 publications: 397 scientists 421–440 publications: 327 scientists 441–460 publications: 270 scientists 461–480 publications: 265 scientists 481–500 publications: 252 scientists 501–520 publications: 201 scientists 521–540 publications: 185 scientists 541–560 publications: 148 scientists 561–580 publications: 148 scientists 581–600 publications: 132 scientists 601–620 publications: 114 scientists 621–640 publications: 104 scientists 641–660 publications: 91 scientists 661–680 publications: 92 scientists 681–700 publications: 73 scientists 701–720 publications: 57 scientists 721–740 publications: 54 scientists 741–760 publications: 67 scientists 761–780 publications: 45 scientists 781–800 publications: 46 scientists 801–820 publications: 39 scientists 821–840 publications: 32 scientists 841–860 publications: 36 scientists 861–880 publications: 29 scientists 881–900 publications: 26 scientists 901–920 publications: 24 scientists 921–940 publications: 14 scientists 941–960 publications: 23 scientists 961–980 publications: 28 scientists 981–1,000 publications: 15 scientists 1,001–1,020 publications: 29 scientists 1,021–1,040 publications: 12 scientists 1,041–1,060 publications: 19 scientists 1,061–1,080 publications: 12 scientists 1,081–1,100 publications: 6 scientists 1,101–1,120 publications: 8 scientists 1,121–1,140 publications: 12 scientists 1,141–1,160 publications: 5 scientists 1,161–1,180 publications: 6 scientists 1,181–1,200 publications: 14 scientists 1,201–1,220 publications: 7 scientists 1,221–1,240 publications: 2 scientists 1,241–1,260 publications: 6 scientists 1,261–1,280 publications: 4 scientists 1,281–1,294 publications: 6 scientists 1,295+ publications: 100 scientists
61 publications 1,295+

This scientist: 276 publications — 57th percentile

57% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 1,295 publications or more.

Takaharu Onishi D-index placement in Chemistry in 2026

The chart shows the D-index (discipline H-index) distribution of Chemistry scientists ranked by Research.com in 2026. The highlighted bar marks where Takaharu Onishi sits on this spectrum.

40–41 D-Index: 289 scientists 42–43 D-Index: 612 scientists 44–45 D-Index: 808 scientists 46–47 D-Index: 776 scientists 48–49 D-Index: 835 scientists 50–51 D-Index: 861 scientists 52–53 D-Index: 872 scientists 54–55 D-Index: 933 scientists 56–57 D-Index: 1,051 scientists 58–59 D-Index: 930 scientists 60–61 D-Index: 882 scientists 62–63 D-Index: 834 scientists 64–65 D-Index: 731 scientists 66–67 D-Index: 775 scientists 68–69 D-Index: 683 scientists 70–71 D-Index: 646 scientists 72–73 D-Index: 561 scientists 74–75 D-Index: 501 scientists 76–77 D-Index: 437 scientists 78–79 D-Index: 388 scientists 80–81 D-Index: 354 scientists 82–83 D-Index: 292 scientists 84–85 D-Index: 275 scientists 86–87 D-Index: 254 scientists 88–89 D-Index: 235 scientists 90–91 D-Index: 185 scientists 92–93 D-Index: 192 scientists 94–95 D-Index: 155 scientists 96–97 D-Index: 163 scientists 98–99 D-Index: 125 scientists 100–101 D-Index: 105 scientists 102–103 D-Index: 105 scientists 104–105 D-Index: 112 scientists 106–107 D-Index: 88 scientists 108–109 D-Index: 68 scientists 110–111 D-Index: 69 scientists 112–113 D-Index: 65 scientists 114–115 D-Index: 79 scientists 116–117 D-Index: 61 scientists 118–119 D-Index: 44 scientists 120–121 D-Index: 37 scientists 122–123 D-Index: 40 scientists 124–125 D-Index: 33 scientists 126–127 D-Index: 26 scientists 128–129 D-Index: 34 scientists 130–131 D-Index: 35 scientists 132–133 D-Index: 25 scientists 134–135 D-Index: 27 scientists 136–137 D-Index: 17 scientists 138–139 D-Index: 16 scientists 140–141 D-Index: 20 scientists 142–143 D-Index: 20 scientists 144–145 D-Index: 15 scientists 146–147 D-Index: 9 scientists 148–149 D-Index: 9 scientists 150–151 D-Index: 16 scientists 152–153 D-Index: 11 scientists 154–155 D-Index: 9 scientists 156–157 D-Index: 3 scientists 158 D-Index: 3 scientists 159+ D-Index: 98 scientists
40 D-Index 159+

This scientist: 56 D-Index — 36th percentile

36% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 159 D-Index or more.

Overview

Takaharu Onishi is affiliated with the University of Tokyo in Japan. Their academic profile does not list any recent papers, co-authors, publication venues, book publications, or specific fields and subfields of study based on the available data.

There is no information provided regarding any awards won by Takaharu Onishi, nor specific topics that define their research focus. The absence of such details limits a detailed description of their scientific contributions or areas of expertise.

Given the limited data, the profile primarily establishes the institutional affiliation with a major academic institution in Japan. The University of Tokyo is known for its research output across multiple disciplines, which may suggest a broad academic environment in which Takaharu Onishi operates.

Best Publications

  • Carbon monoxide and carbon dioxide adsorption on cerium oxide studied by Fourier-transform infrared spectroscopy. Part 1.—Formation of carbonate species on dehydroxylated CeO2, at room temperature

    Can Li;Yoshihisa Sakata;Toru Arai;Kazunari Domen

  • Mechanism of photocatalytic decomposition of water into H2 and O2 over NiOSrTiO3

    Kazunari Domen;Akihiko Kudo;Takaharu Onishi

  • Photocatalytic decomposition of water vapour on an NiO–SrTiO3 catalyst

    Kazunari Domen;Shuichi Naito;Mitsuyuki Soma;Takaharu Onishi

  • Photocatalytic decomposition of water over NiOK4Nb6O17 catalyst

    Akihiko Kudo;Akira Tanaka;Kazunari Domen;Ken ichi Maruya

  • Photocatalytic decomposition of water into hydrogen and oxygen over nickel(II) oxide-strontium titanate (SrTiO3) powder. 1. Structure of the catalysts

    Kazunari Domen;Akihiko Kudo;Takaharu Onishi;Nobuhiro Kosugi

  • Dioxygen adsorption on well-outgassed and partially reduced cerium oxide studied by FT-IR

    Can Li;Kazunari Domen;Kenichi Maruya;Takaharu Onishi

  • Nickel-loaded K4Nb6O17 photocatalyst in the decomposition of H2O into H2 and O2: Structure and reaction mechanism

    Akihiko Kudo;K. Sayama;A. Tanaka;K. Asakura

  • Adsorption of carbon monoxide and carbon dioxide on cerium oxide studied by Fourier-transform infrared spectroscopy. Part 2.—Formation of formate species on partially reduced CeO2 at room temperature

    Can Li;Yoshihisa Sakata;Toru Arai;Kazunari Domen

  • Spectroscopic Identification of Adsorbed Species Derived from adsorption and decomposition of formic acid, Methanol, and Formaldehyde on Cerium Oxide

    Can Li;Kazunari Domen;Ken-ichi Maruya;Takaharu Onishi

  • Photocatalysis over binary metal oxides. Enhancement of the photocatalytic activity of titanium dioxide in titanium-silicon oxides

    Masakazu Anpo;Hiroaki Nakaya;Sukeya Kodama;Yutaka Kubokawa

  • A novel series of photocatalysts with an ion-exchangeable layered structure of niobate

    K. Domen;J. Yoshimura;T. Sekine;A. Tanaka

  • Support and promoter effect of ruthenium catalyst. III. Kinetics of ammonia synthesis over various Ru catalysts

    K. Aika;M. Kumasaka;T. Oma;O. Kato

  • The mechanism of the reaction between NOx and NH3 on V2O5 in the presence of oxygen

    Maki Takagi;Tomoji Kawai;Mitsuyuki Soma;Takaharu Onishi

  • Photocatalytic decomposition of liquid water on a NiOSrTiO3 catalyst

    K. Domen;S. Naito;T. Onishi;K. Tamaru

  • Study of the photocatalytic decomposition of water vapor over a nickel(II) oxide-strontium titanate (SrTiO3) catalyst

    Kazunari Domen;Shuichi Naito;Takaharu Onishi;Kenzi Tamaru

  • Infrared studies of adsorbed species of H2, CO and CO2 over ZrO2

    J. Kondo;H. Abe;Y. Sakata;K. Maruya

  • Photocatalytic decomposition of water over platinum-intercalated potassium niobate (K4Nb6O17)

    K. Sayama;A. Tanaka;K. Domen;K. Maruya

  • Photodecomposition of water and hydrogen evolution from aqueous methanol solution over novel niobate photocatalysts

    Kazunari Domen;Akihiko Kudo;Atsushi Shinozaki;Akira Tanaka

  • Photocatalytic activities of TiO2 loaded with NiO

    Akihiko Kudo;Kazunari Domen;Ken-ichi Maruya;Takaharu Onishi

  • Novel photocatalysts, ion-exchanged K4Nb6O17, with a layer structure

    Kazunari Domen;Akihiko Kudo;Mutsumi Shibata;Akira Tanaka

Frequent Co-Authors

Kenzi Tamaru
Kenzi Tamaru University of Tokyo
Kazunari Domen
Kazunari Domen University of Tokyo
Akihiko Kudo
Akihiko Kudo Tokyo University of Science
Ken-ichi Aika
Ken-ichi Aika Tokyo Institute of Technology
Masaru Ichikawa
Masaru Ichikawa Hokkaido University
Tamotsu Kondow
Tamotsu Kondow University of Tokyo
Junko N. Kondo
Junko N. Kondo Tokyo Institute of Technology
Can Li
Can Li Dalian Institute of Chemical Physics
Yasuhiro Iwasawa
Yasuhiro Iwasawa University of Electro-Communications
Tomoji Kawai
Tomoji Kawai Osaka University

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