World's Best Scientists 2026 revealed!

D-Index & Metrics

Chemistry

D-Index
62
Citations
12568
World Ranking
8909
National Ranking
621

Kenta Ooi 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 Kenta Ooi 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: 219 publications — 39th percentile

39% of scientists in this discipline score the same or lower.

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

Kenta Ooi 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 Kenta Ooi 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: 62 D-Index — 52nd percentile

52% of scientists in this discipline score the same or lower.

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

Overview

Kenta Ooi is affiliated with the National Institute of Advanced Industrial Science and Technology in Japan. Their research predominantly focuses on environmental science and materials science, contributing to subfields such as industrial and manufacturing engineering, materials chemistry, surgery, and water science and technology.

The scientist has explored topics including phosphorus and nutrient management, layered double hydroxides synthesis and applications, esophageal and gastrointestinal pathology, as well as adsorption and biosorption for pollutant removal.

Recent publications by Kenta Ooi include:

  • Phosphorus removal from model wastewater using lanthanum hydroxide microcapsules with poly(vinyl chloride) shells, 2020, Separation and Purification Technology
  • Influence of coexisting calcium ions during on-column phosphate adsorption and desorption with granular ferric oxide, 2020, Separation and Purification Technology

The scientist has a frequent publication record in the journal Separation and Purification Technology.

Frequent co-authors collaborating with Kenta Ooi include:

  • Yoji Makita
  • Takaaki Sonoda
  • Yuki Sugiura
  • Atsushi Ogata
  • Changwon Suh

Best Publications

  • Manganese oxide porous crystals

    Qi Feng;Hirofumi Kanoh;Kenta Ooi

  • Phosphate adsorption on synthetic goethite and akaganeite.

    Ramesh Chitrakar;Satoko Tezuka;Akinari Sonoda;Kohji Sakane

  • Recovery of Lithium from Seawater Using Manganese Oxide Adsorbent (H1.6Mn1.6O4) Derived from Li1.6Mn1.6O4

    Ramesh Chitrakar;Hirofumi Kanoh;Yoshitaka Miyai;Kenta Ooi

  • Lithium recovery from salt lake brine by H2TiO3

    Ramesh Chitrakar;Yoji Makita;Kenta Ooi;Akinari Sonoda

  • Intercalation of Organic Ammonium Ions into Layered Graphite Oxide

    Zong-Huai Liu;Zheng-Ming Wang;Xiaojing Yang;Kenta Ooi

  • Selective adsorption of phosphate from seawater and wastewater by amorphous zirconium hydroxide.

    Ramesh Chitrakar;Satoko Tezuka;Akinari Sonoda;Kohji Sakane

  • Swelling and Delamination Behaviors of Birnessite-Type Manganese Oxide by Intercalation of Tetraalkylammonium Ions

    † Zong-huai Liu;Kenta Ooi;Hirofumi Kanoh;§ and Wei-ping Tang

  • A New Type of Manganese Oxide (MnO2·0.5H2O) Derived from Li1.6Mn1.6O4 and Its Lithium Ion-Sieve Properties

    Ramesh Chitrakar;Hirofumi Kanoh;Yoshitaka Miyai;Kenta Ooi

  • Lithium(1+) extraction/insertion with spinel-type lithium manganese oxides. Characterization of redox-type and ion-exchange-type sites

    Qi Feng;Yoshitaka Miyai;Hirofumi Kanoh;Kenta Ooi

  • IR spectra of manganese oxides with either layered or tunnel structures

    Liping Kang;Menming Zhang;Zong-Huai Liu;Kenta Ooi

  • Structural Characterization of Self-Assembled MnO2 Nanosheets from Birnessite Manganese Oxide Single Crystals

    Xiaojing Yang;Yoji Makita;Zong-Huai Liu;Kohji Sakane

  • Adsorption of phosphate from seawater on calcined MgMn-layered double hydroxides

    Ramesh Chitrakar;Satoko Tezuka;Akinari Sonoda;Kohji Sakane

  • Preparation and Adsorptive Properties of Membrane-Type Adsorbents for Lithium Recovery from Seawater

    Aya Umeno;Yoshitaka Miyai;Norio Takagi;Ramesh Chitrakar

  • Alkali Metal Ions Insertion/Extraction Reactions with Hollandite-Type Manganese Oxide in the Aqueous Phase

    Qi Feng;Hirofumi Kanoh;Yoshitaka Miyai;Kenta Ooi

  • Electrochemical Recovery of Lithium Ions in the Aqueous Phase

    H. Kanoh;K. Ooi;Y. Miyai;S. Katoh

  • Hydrothermal Synthesis of Lithium and Sodium Manganese Oxides and Their Metal Ion Extraction/Insertion Reactions

    Qi Feng;Hirofumi Kanoh;Yoshitaka Miyai;Kenta Ooi

  • Selective adsorption of thiophene and 1-benzothiophene on metal-ion-exchanged zeolites in organic medium.

    Mei Xue;Ramesh Chitrakar;Kohji Sakane;Takahiro Hirotsu

  • Preparation of Ni2+−Fe3+ Layered Double Hydroxide Material with High Crystallinity and Well-Defined Hexagonal Shapes

    Yinfeng Han;Zong-Huai Liu;Zupei Yang;Zenling Wang

  • Effect of natural zeolite on methane production for anaerobic digestion of ammonium rich organic sludge.

    Chika Tada;Yingnan Yang;Toshiaki Hanaoka;Akinari Sonoda

  • Preparation and phosphate ion-exchange properties of a hydrotalcite-like compound

    Unknown

  • Metal ion extraction/insertion reactions with todorokite-type manganese oxide in the aqueous phase

    Qi Feng;Hirofumi Kanoh;Yoshitaka Miyai;Kenta Ooi

Frequent Co-Authors

Hirofumi Kanoh
Hirofumi Kanoh Chiba University
Qi Feng
Qi Feng Kagawa University
Zong-Huai Liu
Zong-Huai Liu Shaanxi Normal University
Atsushi Ogata
Atsushi Ogata National Institute of Advanced Industrial Science and Technology
Kazumichi Yanagisawa
Kazumichi Yanagisawa Kōchi University
Zupei Yang
Zupei Yang Shaanxi Normal University
Jae-chun Lee
Jae-chun Lee Korea University of Science and Technology
G. Ranga Rao
G. Ranga Rao Indian Institute of Technology Madras
Genban Sun
Genban Sun Beijing Normal University
Zhifu Liu
Zhifu Liu Chinese Academy of Sciences

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