World's Best Scientists 2026 revealed!
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Chemistry
Japan
2026

D-Index & Metrics

Chemistry

D-Index
95
Citations
37544
World Ranking
1603
National Ranking
73

Michikazu Hara 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 Michikazu Hara 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: 320 publications — 67th percentile

67% of scientists in this discipline score the same or lower.

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

Michikazu Hara 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 Michikazu Hara 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: 95 D-Index — 91st percentile

91% of scientists in this discipline score the same or lower.

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

Research.com Recognitions

  • 2026 - Research.com Chemistry in Japan Leader Award
  • 2025 - Research.com Chemistry in Japan Leader Award
  • 2022 - Research.com Chemistry in Japan Leader Award

Overview

What is he best known for?

The fields of study he is best known for:

  • Catalysis
  • Organic chemistry
  • Oxygen

His primary areas of investigation include Catalysis, Photocatalysis, Inorganic chemistry, Photochemistry and Water splitting. His Catalysis study combines topics in areas such as Carbon, Amorphous carbon and Sulfuric acid. His Photocatalysis research is multidisciplinary, relying on both Nanotechnology, Perovskite, Visible spectrum, Redox and Aqueous solution.

The various areas that Michikazu Hara examines in his Inorganic chemistry study include Decomposition, Oxide, Acceptor, Protonation and Acetic acid. The concepts of his Photochemistry study are interwoven with issues in Hydrogen, Electron donor, Methanol and Visible light irradiation. His Water splitting research includes elements of Photocatalytic decomposition, Reagent, Oxygen and Reaction mechanism.

His most cited work include:

  • GaN:ZnO Solid Solution as a Photocatalyst for Visible-Light-Driven Overall Water Splitting (1023 citations)
  • Hydrolysis of Cellulose by Amorphous Carbon Bearing SO3H, COOH, and OH Groups (744 citations)
  • Cu2O as a photocatalyst for overall water splitting under visible light irradiation (673 citations)

What are the main themes of his work throughout his whole career to date?

Catalysis, Inorganic chemistry, Photocatalysis, Organic chemistry and Photochemistry are his primary areas of study. His Catalysis study combines topics from a wide range of disciplines, such as Carbon and Metal. His Inorganic chemistry study also includes fields such as

  • Oxide and related Mesoporous material,
  • Desorption most often made with reference to Hydrogen.

His study in the field of Water splitting is also linked to topics like Electrolysis of water. His Water splitting research incorporates elements of Decomposition and Perovskite. His biological study spans a wide range of topics, including Electron donor and Visible light irradiation.

He most often published in these fields:

  • Catalysis (50.30%)
  • Inorganic chemistry (37.87%)
  • Photocatalysis (20.71%)

What were the highlights of his more recent work (between 2014-2021)?

  • Catalysis (50.30%)
  • Inorganic chemistry (37.87%)
  • Ammonia production (7.99%)

In recent papers he was focusing on the following fields of study:

Michikazu Hara mostly deals with Catalysis, Inorganic chemistry, Ammonia production, Organic chemistry and Ammonia. He interconnects Nanoparticle and Metal in the investigation of issues within Catalysis. His research in Inorganic chemistry intersects with topics in Crystallography, Crystal structure, Oxygen, X-ray absorption fine structure and Alkali metal.

In his study, Photochemistry, Oxide, Catalyst support, Electron transfer and Nanotechnology is inextricably linked to Electride, which falls within the broad field of Ammonia production. As a part of the same scientific study, Michikazu Hara usually deals with the Organic chemistry, concentrating on Bioplastic and frequently concerns with Commodity chemicals and Biofuel. His study in Ammonia is interdisciplinary in nature, drawing from both Hydrogen, Hydride and Nitrogen.

Between 2014 and 2021, his most popular works were:

  • Electride support boosts nitrogen dissociation over ruthenium catalyst and shifts the bottleneck in ammonia synthesis (229 citations)
  • Effect of MnO2 Crystal Structure on Aerobic Oxidation of 5-Hydroxymethylfurfural to 2,5-Furandicarboxylic Acid. (92 citations)
  • Electronic Effect of Ruthenium Nanoparticles on Efficient Reductive Amination of Carbonyl Compounds (90 citations)

In his most recent research, the most cited papers focused on:

  • Catalysis
  • Organic chemistry
  • Oxygen

Michikazu Hara focuses on Catalysis, Ammonia production, Inorganic chemistry, Organic chemistry and Heterogeneous catalysis. His Catalysis research is multidisciplinary, incorporating elements of Hydrogen, Nanoparticle, Electride and Photochemistry. His work in Ammonia production covers topics such as Activation energy which are related to areas like Nitrogen and Solid solution.

The study incorporates disciplines such as Oxide and Metal in addition to Inorganic chemistry. As a part of the same scientific family, Michikazu Hara mostly works in the field of Organic chemistry, focusing on Bioplastic and, on occasion, 2,5-Furandicarboxylic acid, 5-hydroxymethylfurfural, Commodity chemicals and Raw material. His Heterogeneous catalysis study integrates concerns from other disciplines, such as Reductive amination, Biofuel and Manganese.

Best Publications

  • GaN:ZnO Solid Solution as a Photocatalyst for Visible-Light-Driven Overall Water Splitting

    Kazuhiko Maeda;Tsuyoshi Takata;Michikazu Hara;Nobuo Saito

  • Ammonia synthesis using a stable electride as an electron donor and reversible hydrogen store

    Masaaki Kitano;Yasunori Inoue;Youhei Yamazaki;Fumitaka Hayashi

  • Oxysulfide Sm2Ti2S2O5 as a Stable Photocatalyst for Water Oxidation and Reduction under Visible Light Irradiation (λ ≤ 650 nm)

    Akio Ishikawa;Tsuyoshi Takata;Junko N Kondo;Michikazu Hara

  • Hydrolysis of Cellulose by Amorphous Carbon Bearing SO3H, COOH, and OH Groups

    Satoshi Suganuma;Kiyotaka Nakajima;Masaaki Kitano;Daizo Yamaguchi

  • Cu2O as a photocatalyst for overall water splitting under visible light irradiation

    Michikazu Hara;Takeshi Kondo;Mutsuko Komoda;Sigeru Ikeda

  • Conduction and Valence Band Positions of Ta2O5, TaON, and Ta3N5 by UPS and Electrochemical Methods

    Wang Jae Chun;Akio Ishikawa;Hideki Fujisawa;Tsuyoshi Takata

  • Green chemistry: biodiesel made with sugar catalyst.

    Masakazu Toda;Atsushi Takagaki;Mai Okamura;Junko N. Kondo

  • An oxynitride, TaON, as an efficient water oxidation photocatalyst under visible light irradiation (λ≤ 500 nm)

    Go Hitoki;Tsuyoshi Takata;Junko N. Kondo;Michikazu Hara

  • A Carbon Material as a Strong Protonic Acid

    Michikazu Hara;Takemi Yoshida;Atsushi Takagaki;Tsuyoshi Takata

  • Acid-Catalyzed Reactions on Flexible Polycyclic Aromatic Carbon in Amorphous Carbon

    Mai Okamura;Atsushi Takagaki;Masakazu Toda;Junko N. Kondo

  • Electride support boosts nitrogen dissociation over ruthenium catalyst and shifts the bottleneck in ammonia synthesis

    Masaaki Kitano;Shinji Kanbara;Yasunori Inoue;Navaratnarajah Kuganathan

  • Photocatalytic water reduction under visible light on a novel ZnIn2S4 catalyst synthesized by hydrothermal method.

    Zhibin Lei;Wansheng You;Meiying Liu;Guohua Zhou

  • Photoreactions on LaTiO2N under Visible Light Irradiation

    Asako Kasahara;Kota Nukumizu;Go Hitoki;Tsuyoshi Takata

  • Nb2O5·nH2O as a heterogeneous catalyst with water-tolerant Lewis acid sites.

    Kiyotaka Nakajima;Yusuke Baba;Ryouhei Noma;Masaaki Kitano

  • Structural and Kinetic Characterization of Lithium Intercalation into Carbon Anodes for Secondary Lithium Batteries

    Norio Takami;Asako Satoh;Michikazu Hara;Takahisa Ohsaki

  • Esterification of higher fatty acids by a novel strong solid acid

    Atsushi Takagaki;Masakazu Toda;Mai Okamura;Junko N. Kondo

  • Overall Water Splitting on (Ga1-xZnx)(N1-xOx) Solid Solution Photocatalyst: Relationship between Physical Properties and Photocatalytic Activity

    Kazuhiko Maeda;Kentaro Teramura;Tsuyoshi Takata;Michikazu Hara

  • Ta3N5 as a Novel Visible Light-Driven Photocatalyst (λ<600 nm)

    Go Hitoki;Akio Ishikawa;Tsuyoshi Takata;Junko N. Kondo

  • Photocatalytic Decomposition of Water on Spontaneously Hydrated Layered Perovskites

    Tsuyoshi Takata;Yoko Furumi;Kiyoaki Shinohara;Akira Tanaka

  • TaON and Ta3N5 as new visible light driven photocatalysts

    Michikazu Hara;Go Hitoki;Tsuyoshi Takata;Junko N. Kondo

Frequent Co-Authors

Junko N. Kondo
Junko N. Kondo Tokyo Institute of Technology
Kazunari Domen
Kazunari Domen University of Tokyo
Masaaki Kitano
Masaaki Kitano Tokyo Institute of Technology
Hideo Hosono
Hideo Hosono Tokyo Institute of Technology
Shigenobu Hayashi
Shigenobu Hayashi National Institute of Advanced Industrial Science and Technology
Keigo Kamata
Keigo Kamata Tokyo Institute of Technology
Tsuyoshi Takata
Tsuyoshi Takata Shinshu University
Wataru Ueda
Wataru Ueda Kanagawa University
Masahiro Sadakane
Masahiro Sadakane Hiroshima University
Atsushi Takagaki
Atsushi Takagaki Kyushu University

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