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D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Chemistry 43 17132 15482 1350 1222 167 7815

Kenji Okitsu publications per year

The chart shows the history of publications by Kenji Okitsu between 1995 and 2026, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Kenji Okitsu published across 32 years, from 1995 to 2026, averaging 6 papers a year. Output peaked at 16 publications in 2007. 8 of the 193 publications appeared in the last two years.

No. of publications
5 10 15
Bar chart. Horizontal axis: year, 1995 to 2026. Vertical axis: number of publications, 0 to 16. Peak 16 publications in 2007. 1995: 2 publications 1996: 6 publications 1997: 2 publications 1998: 0 publications 1999: 7 publications 2000: 4 publications 2001: 7 publications 2002: 3 publications 2003: 2 publications 2004: 11 publications 2005: 11 publications 2006: 8 publications 2007: 16 publications 2008: 9 publications 2009: 13 publications 2010: 4 publications 2011: 5 publications 2012: 4 publications 2013: 5 publications 2014: 10 publications 2015: 7 publications 2016: 6 publications 2017: 2 publications 2018: 10 publications 2019: 3 publications 2020: 5 publications 2021: 4 publications 2022: 6 publications 2023: 4 publications 2024: 9 publications 2025: 7 publications 2026: 1 publication
1995 2026

193 publications in total across all disciplines

View publications per year as a table
Kenji Okitsu: publications per year, 1995 to 2026
Year Publications
1995 2
1996 6
1997 2
1998 0
1999 7
2000 4
2001 7
2002 3
2003 2
2004 11
2005 11
2006 8
2007 16
2008 9
2009 13
2010 4
2011 5
2012 4
2013 5
2014 10
2015 7
2016 6
2017 2
2018 10
2019 3
2020 5
2021 4
2022 6
2023 4
2024 9
2025 7
2026 1
Total 193
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Kenji Okitsu 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 Kenji Okitsu sits on this spectrum.

No. of scientists
250 500 750 1,000 1,250
Bar chart with 63 bars. Horizontal axis: publications, 61–80 to 1,295+. Vertical axis: number of scientists, 0 to 1,350. Most scientists, 1,350, have 161–180 publications. The last bar groups every scientist with 1,295 publications or more. The highlighted bar, 161–180 publications, is where this scientist sits. 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
61–80 publications 1,295+

This scientist: 167 publications — 20th percentile

20% of scientists in this discipline score the same or lower.

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

View publications distribution as a table
Number of Chemistry scientists by publication count, Research.com 2026 ranking edition. Based on 17,934 ranked scientists.
Publications Scientists This scientist
61–80 66
81–100 302
101–120 623
121–140 918
141–160 1,218
161–180 1,350 167
181–200 1,344
201–220 1,281
221–240 1,216
241–260 1,100
261–280 979
281–300 939
301–320 764
321–340 643
341–360 628
361–380 522
381–400 459
401–420 397
421–440 327
441–460 270
461–480 265
481–500 252
501–520 201
521–540 185
541–560 148
561–580 148
581–600 132
601–620 114
621–640 104
641–660 91
661–680 92
681–700 73
701–720 57
721–740 54
741–760 67
761–780 45
781–800 46
801–820 39
821–840 32
841–860 36
861–880 29
881–900 26
901–920 24
921–940 14
941–960 23
961–980 28
981–1,000 15
1,001–1,020 29
1,021–1,040 12
1,041–1,060 19
1,061–1,080 12
1,081–1,100 6
1,101–1,120 8
1,121–1,140 12
1,141–1,160 5
1,161–1,180 6
1,181–1,200 14
1,201–1,220 7
1,221–1,240 2
1,241–1,260 6
1,261–1,280 4
1,281–1,294 6
1,295+ 100
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Kenji Okitsu 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 Kenji Okitsu sits on this spectrum.

No. of scientists
250 500 750 1,000
Bar chart with 61 bars. Horizontal axis: D-Index, 40–41 to 159+. Vertical axis: number of scientists, 0 to 1,051. Most scientists, 1,051, have 56–57 D-Index. The last bar groups every scientist with 159 D-Index or more. The highlighted bar, 42–43 D-Index, is where this scientist sits. 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
40–41 D-Index 159+

This scientist: 43 D-Index — 5th percentile

5% of scientists in this discipline score the same or lower.

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

View D-Index distribution as a table
Number of Chemistry scientists by D-index, Research.com 2026 ranking edition. Based on 17,934 ranked scientists.
D-Index Scientists This scientist
40–41 289
42–43 612 43
44–45 808
46–47 776
48–49 835
50–51 861
52–53 872
54–55 933
56–57 1,051
58–59 930
60–61 882
62–63 834
64–65 731
66–67 775
68–69 683
70–71 646
72–73 561
74–75 501
76–77 437
78–79 388
80–81 354
82–83 292
84–85 275
86–87 254
88–89 235
90–91 185
92–93 192
94–95 155
96–97 163
98–99 125
100–101 105
102–103 105
104–105 112
106–107 88
108–109 68
110–111 69
112–113 65
114–115 79
116–117 61
118–119 44
120–121 37
122–123 40
124–125 33
126–127 26
128–129 34
130–131 35
132–133 25
134–135 27
136–137 17
138–139 16
140–141 20
142–143 20
144–145 15
146–147 9
148–149 9
150–151 16
152–153 11
154–155 9
156–157 3
158 3
159+ 98
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Overview

Kenji Okitsu is affiliated with Osaka Metropolitan University in Japan and has a focused research profile in the fields of Engineering and Materials Science, with significant contributions to subfields such as Materials Chemistry, Renewable Energy, Sustainability and the Environment, Biomedical Engineering, Mechanical Engineering, and Electrical and Electronic Engineering.

Their research topics cover a range of specialized areas including Advanced Photocatalysis Techniques, Catalytic Processes in Materials Science, Biodiesel Production and Applications, Ultrasound and Cavitation Phenomena, Lubricants and Their Additives, Gas Sensing Nanomaterials and Sensors, and Catalysis and Hydrodesulfurization Studies.

Kenji Okitsu has authored several papers across reputable journals. Notable recent publications include:

  • In situ self-assembled S-scheme BiOBr/pCN hybrid with enhanced photocatalytic activity for organic pollutant degradation and CO2 reduction, 2021, Applied Surface Science
  • Process optimization of esterification for deacidification in waste cooking oil: RSM approach and for biodiesel production assisted with ultrasonic and solvent, 2022, Fuel
  • Facile photo-ultrasonic assisted synthesis of flower-like Pt/N-MoS2 microsphere as an efficient sonophotocatalyst for nitrogen fixation, 2020, Ultrasonics Sonochemistry
  • Z-type heterojunction of graphene quantum dots/ g-C 3 N 4 / BiOCl with excellent photocatalytic performance for nitrogen fixation, 2022, International Journal of Energy Research
  • Biodiesel production from sheep fat catalyzed by CaO-SrO(x)/BCs(y) acid-base bifunctional catalyst and process optimization, 2024, Renewable Energy

The most frequent coauthors collaborating with Kenji Okitsu include Tie-Zhen Ren, Abulikemu Abulizi (appearing twice as unique entries), Hongyu Fu, and Aisha Nulahong. These collaborators reflect a sustained network supporting research output.

Major publication venues where Kenji Okitsu's work frequently appears are:

  • Ultrasonics Sonochemistry
  • Journal of Environmental Chemical Engineering
  • SSRN Electronic Journal
  • Journal of Industrial and Engineering Chemistry
  • Journal of Alloys and Compounds

This profile highlights a research career centered on catalysis and materials chemistry with a consistent output in energy, environmental, and material science domains. The integration of ultrasound and photocatalytic methodologies trend through the publications suggests an emphasis on innovative experimental techniques within their work landscape.

Best Publications

  • Sonochemical decomposition of perfluorooctane sulfonate and perfluorooctanoic acid.

    Hiroshi Moriwaki;Youichi Takagi;Masanobu Tanaka;Kenshiro Tsuruho

  • Sonochemical synthesis of gold nanoparticles: effects of ultrasound frequency.

    Kenji Okitsu;Muthupandian Ashokkumar;Franz Grieser

  • SONOCHEMICAL PREPARATION OF BIMETALLIC NANOPARTICLES OF GOLD/PALLADIUM IN AQUEOUS SOLUTION

    Yoshiteru Mizukoshi;Kenji Okitsu;Yasuaki Maeda;Takao A. Yamamoto

  • Sonochemical degradation of azo dyes in aqueous solution: a new heterogeneous kinetics model taking into account the local concentration of OH radicals and azo dyes

    Kenji Okitsu;Kazuya Iwasaki;Yoshihiro Yobiko;Hiroshi Bandow

  • Catalytic Technologies for Biodiesel Fuel Production and Utilization of Glycerol: A Review

    Le Tu Thanh;Kenji Okitsu;Luu Van Boi;Yasuaki Maeda

  • Sonochemical Preparation of Ultrafine Palladium Particles

    Kenji Okitsu;Hiroshi Bandow;Yasuaki Maeda;Yoshio Nagata

  • Ultrasound-assisted production of biodiesel fuel from vegetable oils in a small scale circulation process.

    Le Tu Thanh;Kenji Okitsu;Yasuhiro Sadanaga;Norimichi Takenaka

  • Formation of Colloidal Gold Nanoparticles in an Ultrasonic Field: Control of Rate of Gold(III) Reduction and Size of Formed Gold Particles

    Kenji Okitsu;Akihiko Yue;Shuji Tanabe;and Hiroshige Matsumoto

  • A two-step continuous ultrasound assisted production of biodiesel fuel from waste cooking oils: a practical and economical approach to produce high quality biodiesel fuel.

    Le Tu Thanh;Le Tu Thanh;Kenji Okitsu;Yasuhiro Sadanaga;Norimichi Takenaka

  • Sonochemical Preparation and Catalytic Behavior of Highly Dispersed Palladium Nanoparticles on Alumina.

    Kenji Okitsu;Akihiko Yue;Shuji Tanabe;Hiroshige Matsumoto

  • Biodiesel production through transesterification of triolein with various alcohols in an ultrasonic field

    Hoang Duc Hanh;Kenji Okitsu;Rokuro Nishimura

  • Formation of noble metal particles by ultrasonic irradiation

    K. Okitsu;Y. Mizukoshi;H. Bandow;Y. Maeda

  • Biodiesel production by esterification of oleic acid with short-chain alcohols under ultrasonic irradiation condition

    Hoang Duc Hanh;Kenji Okitsu;Rokuro Nishimura

  • Sonochemical Formation of Gold Particles in Aqueous Solution

    Yoshio Nagata;Yoshiteru Mizukoshi;Kenji Okitsu;Yasuaki Maeda

  • Acoustic multibubble cavitation in water: A new aspect of the effect of a rare gas atmosphere on bubble temperature and its relevance to sonochemistry.

    Kenji Okitsu;Takeru Suzuki;Norimichi Takenaka;Hiroshi Bandow

  • Methanolysis of triolein by low frequency ultrasonic irradiation

    Hoang Duc Hanh;Carmen Starvarache;Kenji Okitsu

  • One-Pot Synthesis of Gold Nanorods by Ultrasonic Irradiation: The Effect of pH on the Shape of the Gold Nanorods and Nanoparticles

    Kenji Okitsu;Kohei Sharyo;Rokuro Nishimura

  • Sonochemical synthesis of gold nanoparticles on chitosan

    Kenji Okitsu;Yoshiteru Mizukoshi;Takao A. Yamamoto;Yasuaki Maeda

  • Sonolytic Control of Rate of Gold(III) Reduction and Size of Formed Gold Nanoparticles: Relation between Reduction Rates and Sizes of Formed Nanoparticles

    Kenji Okitsu;Akihiko Yue;Shunji Tanabe;Hiroshige Matsumoto

  • A new co-solvent method for the green production of biodiesel fuel – Optimization and practical application

    Le Tu Thanh;Le Tu Thanh;Kenji Okitsu;Yasuhiro Sadanaga;Norimichi Takenaka

Frequent Co-Authors

Yasuaki Maeda
Yasuaki Maeda Osaka Metropolitan University
Hiroshige Matsumoto
Hiroshige Matsumoto Kyushu University
Koichi Niihara
Koichi Niihara Nagaoka University of Technology
Takayuki Takasugi
Takayuki Takasugi Osaka Metropolitan University
Muthupandian Ashokkumar
Muthupandian Ashokkumar University of Melbourne
Tohru Sekino
Tohru Sekino Osaka University
Gary Owens
Gary Owens University of Adelaide
Jun-Jie Zhu
Jun-Jie Zhu Nanjing University
Steven L. Suib
Steven L. Suib University of Connecticut
Franz Grieser
Franz Grieser University of Melbourne

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