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- Publisher Website: 10.1002/anie.202016170
- Scopus: eid_2-s2.0-85101920900
- PMID: 33491294
- WOS: WOS:000634914300026
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Article: Steering Electron–Hole Migration Pathways Using Oxygen Vacancies in Tungsten Oxides to Enhance Their Photocatalytic Oxygen Evolution Performance
Title | Steering Electron–Hole Migration Pathways Using Oxygen Vacancies in Tungsten Oxides to Enhance Their Photocatalytic Oxygen Evolution Performance |
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Authors | |
Issue Date | 2021 |
Publisher | Wiley - VCH Verlag GmbH & Co. KGaA. The Journal's web site is located at https://onlinelibrary.wiley.com/journal/15213773 |
Citation | Angewandte Chemie (International Edition), 2021, v. 60 n. 15, p. 8236-8242 How to Cite? |
Abstract | The overall water splitting efficiency is mainly restricted by the slow kinetics of oxygen evolution. Therefore, it is essential to develop active oxygen evolution catalysts. In this context, we designed and synthesized a tungsten oxide catalyst with oxygen vacancies for photocatalytic oxygen evolution, which exhibited a higher oxygen evolution rate of 683 μmol h−1 g−1 than that of pure WO3 (159 μmol h−1 g−1). Subsequent studies through transient absorption spectroscopy found that the oxygen vacancies can produce electron trapping states to inhibit the direct recombination of photogenerated carriers. Additionally, a Pt cocatalyst can promote electron trap states to participate in the reaction to improve the photocatalytic performance further. This work uses femtosecond transient absorption spectroscopy to explain the photocatalytic oxygen evolution mechanism of inorganic materials and provides new insights into the design of high-efficiency water-splitting catalysts. |
Persistent Identifier | http://hdl.handle.net/10722/300884 |
ISSN | 2023 Impact Factor: 16.1 2023 SCImago Journal Rankings: 5.300 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Wei, Z | - |
dc.contributor.author | WANG, W | - |
dc.contributor.author | Li, W | - |
dc.contributor.author | BAI, X | - |
dc.contributor.author | Zhao, J | - |
dc.contributor.author | Tse, ECM | - |
dc.contributor.author | Phillips, DL | - |
dc.contributor.author | Zhu, Y | - |
dc.date.accessioned | 2021-07-06T03:11:33Z | - |
dc.date.available | 2021-07-06T03:11:33Z | - |
dc.date.issued | 2021 | - |
dc.identifier.citation | Angewandte Chemie (International Edition), 2021, v. 60 n. 15, p. 8236-8242 | - |
dc.identifier.issn | 1433-7851 | - |
dc.identifier.uri | http://hdl.handle.net/10722/300884 | - |
dc.description.abstract | The overall water splitting efficiency is mainly restricted by the slow kinetics of oxygen evolution. Therefore, it is essential to develop active oxygen evolution catalysts. In this context, we designed and synthesized a tungsten oxide catalyst with oxygen vacancies for photocatalytic oxygen evolution, which exhibited a higher oxygen evolution rate of 683 μmol h−1 g−1 than that of pure WO3 (159 μmol h−1 g−1). Subsequent studies through transient absorption spectroscopy found that the oxygen vacancies can produce electron trapping states to inhibit the direct recombination of photogenerated carriers. Additionally, a Pt cocatalyst can promote electron trap states to participate in the reaction to improve the photocatalytic performance further. This work uses femtosecond transient absorption spectroscopy to explain the photocatalytic oxygen evolution mechanism of inorganic materials and provides new insights into the design of high-efficiency water-splitting catalysts. | - |
dc.language | eng | - |
dc.publisher | Wiley - VCH Verlag GmbH & Co. KGaA. The Journal's web site is located at https://onlinelibrary.wiley.com/journal/15213773 | - |
dc.relation.ispartof | Angewandte Chemie (International Edition) | - |
dc.rights | Submitted (preprint) Version This is the pre-peer reviewed version of the following article: [FULL CITE], which has been published in final form at [Link to final article using the DOI]. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. Accepted (peer-reviewed) Version This is the peer reviewed version of the following article: [FULL CITE], which has been published in final form at [Link to final article using the DOI]. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. | - |
dc.title | Steering Electron–Hole Migration Pathways Using Oxygen Vacancies in Tungsten Oxides to Enhance Their Photocatalytic Oxygen Evolution Performance | - |
dc.type | Article | - |
dc.identifier.email | Wei, Z: weiz19@hku.hk | - |
dc.identifier.email | Tse, ECM: ecmtse@hku.hk | - |
dc.identifier.email | Phillips, DL: phillips@hku.hk | - |
dc.identifier.authority | Tse, ECM=rp02452 | - |
dc.identifier.authority | Phillips, DL=rp00770 | - |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.doi | 10.1002/anie.202016170 | - |
dc.identifier.pmid | 33491294 | - |
dc.identifier.scopus | eid_2-s2.0-85101920900 | - |
dc.identifier.hkuros | 323067 | - |
dc.identifier.volume | 60 | - |
dc.identifier.issue | 15 | - |
dc.identifier.spage | 8236 | - |
dc.identifier.epage | 8242 | - |
dc.identifier.isi | WOS:000634914300026 | - |
dc.publisher.place | Germany | - |