Koji Takeuchi

5.7k total citations · 1 hit paper
105 papers, 4.9k citations indexed

About

Koji Takeuchi is a scholar working on Renewable Energy, Sustainability and the Environment, Materials Chemistry and Electrical and Electronic Engineering. According to data from OpenAlex, Koji Takeuchi has authored 105 papers receiving a total of 4.9k indexed citations (citations by other indexed papers that have themselves been cited), including 47 papers in Renewable Energy, Sustainability and the Environment, 47 papers in Materials Chemistry and 20 papers in Electrical and Electronic Engineering. Recurrent topics in Koji Takeuchi's work include TiO2 Photocatalysis and Solar Cells (31 papers), Catalytic Processes in Materials Science (31 papers) and Advanced Photocatalysis Techniques (31 papers). Koji Takeuchi is often cited by papers focused on TiO2 Photocatalysis and Solar Cells (31 papers), Catalytic Processes in Materials Science (31 papers) and Advanced Photocatalysis Techniques (31 papers). Koji Takeuchi collaborates with scholars based in Japan, South Korea and United States. Koji Takeuchi's co-authors include Nobuaki Negishi, Takashi Ibusuki, Shuzo Kutsuna, Shinichi Sugihara, Isao Nakamura, Taizo Sano, Tatsuhiko Ihara, Kazuhide Koike, Sadao Matsuzawa and Hisao Hori and has published in prestigious journals such as Journal of the American Chemical Society, Journal of Geophysical Research Atmospheres and Environmental Science & Technology.

In The Last Decade

Koji Takeuchi

96 papers receiving 4.7k citations

Hit Papers

align trajectories

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

Role of oxygen vacancy in the plasma-treated TiO2 photocatalyst with visible light activity for NO removal

2000 1.1k citations Nobuaki Negishi, Shuzo Kutsuna et al. profile →

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name	h						Papers	Cites
Koji Takeuchi Japan	38	3.3k	2.9k	1.1k	391	304	105	4.9k
Hisahiro Einaga Japan	46	2.0k 0.6×	4.1k 1.4×	1.5k 1.4×	343 0.9×	486 1.6×	153	5.7k
Takashi Ibusuki Japan	33	2.0k 0.6×	1.8k 0.6×	503 0.5×	660 1.7×	318 1.0×	89	3.9k
Guangzhi He China	39	1.6k 0.5×	3.1k 1.1×	1.2k 1.2×	270 0.7×	542 1.8×	107	4.9k
Pierre Pichat France	48	6.5k 2.0×	4.4k 1.5×	1.2k 1.1×	123 0.3×	582 1.9×	144	8.7k
Kai Li China	42	3.6k 1.1×	3.5k 1.2×	3.0k 2.9×	116 0.3×	660 2.2×	314	7.2k
Lei Lei China	39	3.0k 0.9×	2.8k 1.0×	1.7k 1.6×	170 0.4×	241 0.8×	112	5.2k
Thorsten Ressler Germany	42	1.2k 0.4×	4.6k 1.6×	851 0.8×	115 0.3×	629 2.1×	129	6.9k
Ralf Dillert Germany	45	4.5k 1.4×	3.3k 1.1×	1.1k 1.0×	102 0.3×	601 2.0×	110	6.1k
Huan Chen China	47	4.8k 1.5×	4.0k 1.4×	2.0k 1.9×	83 0.2×	489 1.6×	186	7.1k

Countries citing papers authored by Koji Takeuchi

Since Specialization

Citations

This map shows the geographic impact of Koji Takeuchi's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Koji Takeuchi with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Koji Takeuchi more than expected).

Fields of papers citing papers by Koji Takeuchi

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Koji Takeuchi. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Koji Takeuchi. The network helps show where Koji Takeuchi may publish in the future.

Co-authorship network of co-authors of Koji Takeuchi

This figure shows the co-authorship network connecting the top 25 collaborators of Koji Takeuchi. A scholar is included among the top collaborators of Koji Takeuchi based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Koji Takeuchi. Koji Takeuchi is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

Hirakawa, Tsutomu, et al.. (2021). Experimental study for adsorption and photocatalytic reaction of ethyl methylphosphonate molecule as organophosphorus compound adsorbed at surface of titanium dioxide under UV irradiation in ambient condition. Research on Chemical Intermediates. 47(4). 1563–1579.

Hirakawa, Tsutomu, Taizo Sano, Nobuaki Negishi, et al.. (2013). Specific properties on TiO2 photocatalysis to decompose isopropyl methylphosphonofluoridate and dimethyl methylphosphonate in Gas Phase. Journal of Photochemistry and Photobiology A Chemistry. 264. 12–17. 15 indexed citations

Hirakawa, Tsutomu, et al.. (2009). Removal of high concentration dimethyl methylphosphonate in the gas phase by repeated-batch reactions using TiO2. Journal of Hazardous Materials. 177(1-3). 274–280. 16 indexed citations

Ohko, Yoshihisa, Yuri Nakamura, Nobuaki Negishi, Sadao Matsuzawa, & Koji Takeuchi. (2009). Unexpected release of HNO3 and related species from UV-illuminated TiO2 surface into air in photocatalytic oxidation of NO2. Environmental Chemistry Letters. 8(3). 289–294. 16 indexed citations

Otsuka, Emiko, et al.. (2008). An application of transparent mesoporous bulk silica to a titanium dioxide photocatalyst with adsorption and decomposition functions. Journal of Sol-Gel Science and Technology. 46(1). 71–78. 18 indexed citations

Negishi, Nobuaki, et al.. (2005). Wave-guide type photoreactor for water purification. Comptes Rendus Chimie. 9(5-6). 822–828. 12 indexed citations

Sano, Taizo, et al.. (2003). Photocatalytic Decomposition of Gaseous Ozone over TiO₂Thin Fiil. Journal of Korean Society for Atmospheric Environment. 19. 121–128. 1 indexed citations

Kato, Shinji, et al.. (2003). Effect of Ag-Deposition on TiO2 on Photocatalytic Decomposition of Sulfide Chemicals. Journal of the Society of Materials Science Japan. 52(6). 560–565. 3 indexed citations

Kutsuna, Shuzo, Liang Chen, Nobuaki Negishi, et al.. (2003). Laboratory study on heterogeneous decomposition of methyl chloroform on various standard aluminosilica clay minerals as a potential tropospheric sink. Atmospheric chemistry and physics. 3(4). 1063–1082. 5 indexed citations

10.

Sano, Taizo, et al.. (2003). Photocatalytic performance of Pt-loaded TiO2 in the decomposition of gaseous ozone. Journal of Photochemistry and Photobiology A Chemistry. 161(2-3). 155–161. 62 indexed citations

11.

Gholamkhass, Bobak, Kazuhide Koike, Nobuaki Negishi, Hisao Hori, & Koji Takeuchi. (2001). Synthesis and Characterization of Ruthenium(II) Molecular Assemblies for Photosensitization of Nanocrystalline TiO₂: Utilization of Hydroxyl Grafting Mode. Inorganic Chemistry. 40(4). 756–765. 47 indexed citations

12.

Kutsuna, Shuzo, Takashi Ibusuki, & Koji Takeuchi. (2000). Heterogeneous Photoreaction of Tetrachloroethene−Air Mixture on Halloysite Particles. Environmental Science & Technology. 34(12). 2484–2489. 7 indexed citations

13.

Shimizu, Akihiko, et al.. (2000). Exposure Method Using Photoresist Mask for High-Density Optical Disk Mastering. Japanese Journal of Applied Physics. 39(2S). 806–806.

14.

Ōyama, Toshiyuki, Tadahiro Ishii, Yasushi Iimura, & Koji Takeuchi. (1996). Synthesis of rutile and anatase TiO2 fine particles by laser-ignited vapour-phase reaction. Journal of Materials Science Letters. 15(7). 594–596. 10 indexed citations

15.

Sugai, Shigeru, et al.. (1993). Adsorption and dissociation of NO on Pt(100) and (310) studied by AES, UPS and XPS. Surface Science. 282(1-2). 67–75. 41 indexed citations

16.

Takeuchi, Koji, et al.. (1987). Determination of dissolved ozone in water by chemiluminescence method with Rhodamine B.. BUNSEKI KAGAKU. 36(5). 311–315. 5 indexed citations

17.

Okabe, Susumu, et al.. (1986). Effects of misoprostol, (.+-.)-methyl (11.ALPHA., 13E)-11,16-dihydroxy-16-methyl-9-oxoprost-13-en-1-oate, on various gastric and duodenal lesions in rats.. Folia Pharmacologica Japonica. 87(3). 339–350. 2 indexed citations

18.

Ibusuki, Takashi & Koji Takeuchi. (1985). Photocatalytic Action of Titanium Dioxide in trans-2-C4H8-02 and trans-2-C4H8-NO2-air Reaction Systems. Journal of Japan Society of Air Pollution. 20(2). 82–88. 1 indexed citations

19.

Takeuchi, Koji & Takashi Ibusuki. (1985). Determination of traces of hydrogensulfite by chemiluminescence with cerium(IV) sulfate as the reagent. Analytica Chimica Acta. 174. 359–363. 40 indexed citations

20.

Ibusuki, Takashi, et al.. (1982). MEASUREMENT OF INFRARED SPECTRA OF SURFACE SPECIES FOR NO2–C3H6–ZnO SYSTEM UNDER PHOTOIRRADIATION. Chemistry Letters. 11(5). 629–630. 3 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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