Xiaofeng Shen

§ 01

Doctoral research

博士研究

Main PhD work 博士課程主研究

Highly activated single-layer nanosheet dye-sensitized photocatalyst for overall water splitting

高活性化単層ナノシート色素増感型光触媒による水の完全分解

Overall water splitting using a photocatalyst and solar energy has attracted significant attention as a next-generation energy medium, but the current light-hydrogen conversion efficiency is about 1%.
Therefore, I will focus on nanosheet structures which can be improved the surface area, photon absorption efficiency, and dye loading amount.
In this research, I will develop an exfoliation reagent that has a dye-sensitizing ability, and a hybrid photocatalyst with a nanosheet type photocatalyst system that can respond to near infrared region.

光触媒による水の完全分解は次世代エネルギー媒体として期待される水素の製造方法として研究されているが、現状の光-水素変換効率は1%程度である。そこで高表面積、高光子吸収効率、高色素担持量のナノシート構造に注目した。本研究ではナノシート分散・剥離剤に色素増感能を持たせた新規剥離剤の開発と、ナノシート型無機光触媒とのハイブリッド型光触媒を作製し、近赤外まで応答できる新しいシステムを開発する。

§ 02

Research achievements

研究成果

Research Papers論文

Yamanaka Y., Sawada K., Nanke M., Shen X.-F., Song J.T., Abe T., Tanaka K., Matsushima T., Inada M., Ishihara T., Watanabe M. “Molecular insight into visible light driven photocatalytic hydrogen peroxide synthesis using a heptazine-imide structure” Journal of Materials Chemistry A, Vol. 14, pp. 3129–3137 (2026) doi:10.1039/d5ta06698k
Watanabe M., Ono Y., Shen X.-F., Takagaki A., Song J.T., Chang Y.J., Inada M., Ishihara T. “Anchor effect in photocatalytic water splitting using boron dipyrromethene-sensitizing dyes” Journal of the Chinese Chemical Society, Vol. 72, pp. 1229–1237 (2025) doi:10.1002/jccs.70098
Shang J., Kosem N., Kayo Y., Shen X.-F., Matsuyama S., Watanabe M., Inada M., Ishihara T., Staykov A. “Improved charge transfer performance of eosin Y-sensitized anatase TiO₂ by anchoring group modification: from theoretical design to experiment” Journal of Materials Chemistry A (2025, in press) doi:10.1039/d5ta05712d
Li H., Shen X.-F., Lin Y.-S., Lin Y.H., Hung Y.-T., Chen N.-H., Watanabe M., Chang Y.J. “Enhancing DSSCs and Photocatalytic Hydrogen Production with D-A₁-A₂-π-A Sensitizers Containing 10′H-Spiro[Fluorene-9,9′-Phenanthren]-10′-one and Benzo[c][1,2,5]Thiadiazole” Chemistry – An Asian Journal, Vol. 19, e202400697 (2024) doi:10.1002/asia.202400697
Sharif H.M., Shen X.-F., Watanabe M. “The effect of hydrophobicity of ruthenium complex dyes on photocatalytic water electrolysis” Applied Physics A, Vol. 130, 569 (2024) doi:10.1007/s00339-024-07730-1
Kosem N., Shen X.-F., Ohsaki Y., Watanabe M., Song J.T., Ishihara T. “Photobiocatalytic conversion of solar energy to NH₃ from N₂ and H₂O under ambient condition” Applied Catalysis B: Environmental, Vol. 342, 123431 (2024) doi:10.1016/j.apcatb.2023.123431
Shen X.-F., Watanabe M., Takagaki A., Song J.T., Abe T., Kawaguchi D., Tanaka K., Ishihara T. “Pyridyl anchoring squaraine as a near-infrared dye sensitizer for effective sensitized hydrogen production over a titanium dioxide photocatalyst in water medium” Applied Physics A, Vol. 129, 28 (2023) doi:10.1007/s00339-022-06281-7
Shen X.-F., Watanabe M., Song J.T., Takagaki A., Abe T., Tanaka K., Ishihara T. “The acceleration of BODIPY dye-sensitized photocatalytic hydrogen production in aqueous ascorbic acid solutions using alkyl-chain formed second coordination sphere effects” Journal of Materials Chemistry A, Vol. 11, pp. 21153–21160 (2023) doi:10.1039/d3ta03682k
Morita R., Murakami Y., Shen X.-F., Yang D., Watanabe M., Song J.T., Takagaki A., Ishihara T. “Enhanced charge mediator properties of photocatalysts with reduced graphene nanoribbons for photocatalytic acceleration of hydrogen production in aqueous media” Journal of Materials Chemistry C, Vol. 12, pp. 1652–1660 (2023) doi:10.1039/d3tc03622g
Yang D., Li H., Shen X., Watanabe M., Ishihara T. “Solvated Structure of Hybrid Tetraglyme-Aqueous Electrolyte Dissolving High-Concentration LiTFSI-LiFSI for Dual-Ion Battery” ChemSusChem, Vol. 16, e202201805 (2023) doi:10.1002/cssc.202201805
Edalati P., Shen X.-F., Watanabe M., Ishihara T., Arita M., Fuji M., Edalati K. “High-entropy oxynitride as a low-bandgap and stable photocatalyst for hydrogen production” Journal of Materials Chemistry A, Vol. 9, pp. 15076–15086 (2021) doi:10.1039/d1ta03861c
Shen X.-F., Watanabe M., Takagaki A., Song J.T., Ishihara T. “Pyridyl-anchored type BODIPY sensitizer–TiO₂ photocatalyst for enhanced visible light-driven photocatalytic hydrogen production” Catalysts, Vol. 10, 535 (2020) doi:10.3390/catal10050535

Conference Presentations学会発表

Xiaofeng Shen, “Overall water splitting using highly activated single-layer nanosheet dye-sensitised photocatalysts,” 1st Workshop, Decarbonization Society in Kyushu (Q-DeCS), Kyushu University, Ito Campus, May 2023. [Domestic, Oral]
沈小烽, 「高活性化単層ナノシート色素増感型光触媒による水の完全分解」, 九州脱炭素化研究会第1回ワークショップ, 九州大学伊都キャンパス, 2023年5月. [国内, 口頭]
Li H., Shen X.-F., Lin Y.-S., Lin Y.H., Chen N.-H., Hung Y.-T., Watanabe M., Chang Y.J. “Sensitizers D-A₁-A₂-π-A Including Spiro[fluorene-phenanthren]-one and Benzo[c][1,2,5]thiadiazole for Photocatalytic Hydrogen Production and Dye-Sensitized Solar Cells” 31st International Workshop on Active-Matrix Flatpanel Displays and Devices (AM-FPD 2024), pp. 127–130 (2024) doi:10.23919/AM-FPD61635.2024.10615532

Other Achievementsその他の業績

Coming soon準備中

沈 小烽