Surface Modifications of Layered Perovskite Oxysulfide Photocatalyst Y2Ti2O5S2 to Enhance Visible‐Light‐Driven Water Splitting
Abstract Increasing the efficiency of visible‐light‐driven water splitting systems will require improvements in the charge separation characteristics and redox reaction kinetics associated with narrow‐bandgap photocatalysts. Although the traditional approach of loading a single cocatalyst on selecti...
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2025-01-01
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| Series: | Advanced Science |
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| Online Access: | https://doi.org/10.1002/advs.202412326 |
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| author | Xizhuang Liang Junie Jhon M. Vequizo Lihua Lin Xiaoping Tao Qiulian Zhu Mamiko Nakabayashi Daling Lu Hiroaki Yoshida Akira Yamakata Takashi Hisatomi Tsuyoshi Takata Kazunari Domen |
| author_facet | Xizhuang Liang Junie Jhon M. Vequizo Lihua Lin Xiaoping Tao Qiulian Zhu Mamiko Nakabayashi Daling Lu Hiroaki Yoshida Akira Yamakata Takashi Hisatomi Tsuyoshi Takata Kazunari Domen |
| author_sort | Xizhuang Liang |
| collection | DOAJ |
| description | Abstract Increasing the efficiency of visible‐light‐driven water splitting systems will require improvements in the charge separation characteristics and redox reaction kinetics associated with narrow‐bandgap photocatalysts. Although the traditional approach of loading a single cocatalyst on selective facets provides reaction sites and reduces the reaction overpotential, pronounced surface charge carrier recombination still results in limited efficiency increases. The present study demonstrates a significant improvement in the hydrogen evolution activity of the layered single‐crystal photocatalyst Y2Ti2O5S2. Increased performance is obtained through sequential loading of Pt cocatalysts using a two‐step process followed by photodeposition of Cr2O3 nanolayers. The stepwise deposition of Pt involved an impregnation‐reduction pretreatment with subsequent photodeposition and produced numerous hydrogen production sites while promoting electron capture. The Cr2O3 shells formed on Pt nanoparticles further promoted electron transfer from the Pt to the water and inhibited surface carrier recombination. Importantly, it is also possible to construct a Z‐scheme overall water splitting system using the optimized Y2Ti2O5S2 in combination with surface‐modified BiVO4 in the presence of [Fe(CN)6]3−/4−, yielding a solar‐to‐hydrogen energy conversion efficiency of 0.19%. This work provides insights into precise surface modifications of narrow‐bandgap photocatalysts as a means of improving the solar water splitting process. |
| format | Article |
| id | doaj-art-49a62bb1073e4c9888cd7f5e2aa2fa29 |
| institution | Kabale University |
| issn | 2198-3844 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advanced Science |
| spelling | doaj-art-49a62bb1073e4c9888cd7f5e2aa2fa292025-01-20T13:04:18ZengWileyAdvanced Science2198-38442025-01-01123n/an/a10.1002/advs.202412326Surface Modifications of Layered Perovskite Oxysulfide Photocatalyst Y2Ti2O5S2 to Enhance Visible‐Light‐Driven Water SplittingXizhuang Liang0Junie Jhon M. Vequizo1Lihua Lin2Xiaoping Tao3Qiulian Zhu4Mamiko Nakabayashi5Daling Lu6Hiroaki Yoshida7Akira Yamakata8Takashi Hisatomi9Tsuyoshi Takata10Kazunari Domen11Research Initiative for Supra‐Materials Interdisciplinary Cluster for Cutting Edge Research Shinshu University 4‐17‐1 Wakasato Nagano‐shi Nagano 380–8553 JapanResearch Initiative for Supra‐Materials Interdisciplinary Cluster for Cutting Edge Research Shinshu University 4‐17‐1 Wakasato Nagano‐shi Nagano 380–8553 JapanResearch Initiative for Supra‐Materials Interdisciplinary Cluster for Cutting Edge Research Shinshu University 4‐17‐1 Wakasato Nagano‐shi Nagano 380–8553 JapanResearch Initiative for Supra‐Materials Interdisciplinary Cluster for Cutting Edge Research Shinshu University 4‐17‐1 Wakasato Nagano‐shi Nagano 380–8553 JapanResearch Initiative for Supra‐Materials Interdisciplinary Cluster for Cutting Edge Research Shinshu University 4‐17‐1 Wakasato Nagano‐shi Nagano 380–8553 JapanInstitute of Engineering Innovation School of Engineering The University of Tokyo 2‐11‐16, Yayoi Bunkyo‐ku Tokyo 113–8656 JapanResearch Initiative for Supra‐Materials Interdisciplinary Cluster for Cutting Edge Research Shinshu University 4‐17‐1 Wakasato Nagano‐shi Nagano 380–8553 JapanMitsubishi Chemical Corporation Science & Innovation Center 1000 Kamoshida‐cho, Aoba‐ku Yokohama‐shi Kanagawa 227–8502 JapanGraduate School of Natural Science and Technology Okayama University Okayama 700–8530 JapanResearch Initiative for Supra‐Materials Interdisciplinary Cluster for Cutting Edge Research Shinshu University 4‐17‐1 Wakasato Nagano‐shi Nagano 380–8553 JapanResearch Initiative for Supra‐Materials Interdisciplinary Cluster for Cutting Edge Research Shinshu University 4‐17‐1 Wakasato Nagano‐shi Nagano 380–8553 JapanResearch Initiative for Supra‐Materials Interdisciplinary Cluster for Cutting Edge Research Shinshu University 4‐17‐1 Wakasato Nagano‐shi Nagano 380–8553 JapanAbstract Increasing the efficiency of visible‐light‐driven water splitting systems will require improvements in the charge separation characteristics and redox reaction kinetics associated with narrow‐bandgap photocatalysts. Although the traditional approach of loading a single cocatalyst on selective facets provides reaction sites and reduces the reaction overpotential, pronounced surface charge carrier recombination still results in limited efficiency increases. The present study demonstrates a significant improvement in the hydrogen evolution activity of the layered single‐crystal photocatalyst Y2Ti2O5S2. Increased performance is obtained through sequential loading of Pt cocatalysts using a two‐step process followed by photodeposition of Cr2O3 nanolayers. The stepwise deposition of Pt involved an impregnation‐reduction pretreatment with subsequent photodeposition and produced numerous hydrogen production sites while promoting electron capture. The Cr2O3 shells formed on Pt nanoparticles further promoted electron transfer from the Pt to the water and inhibited surface carrier recombination. Importantly, it is also possible to construct a Z‐scheme overall water splitting system using the optimized Y2Ti2O5S2 in combination with surface‐modified BiVO4 in the presence of [Fe(CN)6]3−/4−, yielding a solar‐to‐hydrogen energy conversion efficiency of 0.19%. This work provides insights into precise surface modifications of narrow‐bandgap photocatalysts as a means of improving the solar water splitting process.https://doi.org/10.1002/advs.202412326core‐shell structureelectron dynamicsoverall water splittingsequential cocatalyst decorationZ‐scheme |
| spellingShingle | Xizhuang Liang Junie Jhon M. Vequizo Lihua Lin Xiaoping Tao Qiulian Zhu Mamiko Nakabayashi Daling Lu Hiroaki Yoshida Akira Yamakata Takashi Hisatomi Tsuyoshi Takata Kazunari Domen Surface Modifications of Layered Perovskite Oxysulfide Photocatalyst Y2Ti2O5S2 to Enhance Visible‐Light‐Driven Water Splitting Advanced Science core‐shell structure electron dynamics overall water splitting sequential cocatalyst decoration Z‐scheme |
| title | Surface Modifications of Layered Perovskite Oxysulfide Photocatalyst Y2Ti2O5S2 to Enhance Visible‐Light‐Driven Water Splitting |
| title_full | Surface Modifications of Layered Perovskite Oxysulfide Photocatalyst Y2Ti2O5S2 to Enhance Visible‐Light‐Driven Water Splitting |
| title_fullStr | Surface Modifications of Layered Perovskite Oxysulfide Photocatalyst Y2Ti2O5S2 to Enhance Visible‐Light‐Driven Water Splitting |
| title_full_unstemmed | Surface Modifications of Layered Perovskite Oxysulfide Photocatalyst Y2Ti2O5S2 to Enhance Visible‐Light‐Driven Water Splitting |
| title_short | Surface Modifications of Layered Perovskite Oxysulfide Photocatalyst Y2Ti2O5S2 to Enhance Visible‐Light‐Driven Water Splitting |
| title_sort | surface modifications of layered perovskite oxysulfide photocatalyst y2ti2o5s2 to enhance visible light driven water splitting |
| topic | core‐shell structure electron dynamics overall water splitting sequential cocatalyst decoration Z‐scheme |
| url | https://doi.org/10.1002/advs.202412326 |
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