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Abstract：
It is highly desirable but challenging to optimize the structure of photocatalysts at the atomic scale to facilitate the separation of electron-hole pairs for enhanced performance. Now, a highly efficient photocatalyst is formed by assembling single Pt atoms on a defective TiO2 support (Pt-1/def-TiO2). Apart from being proton reduction sites, single Pt atoms promote the neighboring TiO2 units to generate surface oxygen vacancies and form a Pt-O-Ti3+ atomic interface. Experimental results and density functional theory calculations demonstrate that the Pt-O-Ti3+ atomic interface effectively facilitates photogenerated electrons to transfer from Ti3+ defective sites to single Pt atoms, thereby enhancing the separation of electron-hole pairs. This unique structure makes Pt-1/def-TiO2 exhibit a record-level photocatalytic hydrogen production performance with an unexpectedly high turnover frequency of 51423h(-1), exceeding the Pt nanoparticle supported TiO2 catalyst by a factor of 591.
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ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
ISSN： 1433-7851
Year： 2020
Issue： 3
Volume： 59
Page： 1295-1301
1 6 . 6 0 0
JCR@2022
ESI Discipline： CHEMISTRY;
ESI HC Threshold：139
Cited Count：
WoS CC Cited Count： 446
SCOPUS Cited Count： 411
ESI Highly Cited Papers on the List： 34 Unfold All
WanFang Cited Count：
Chinese Cited Count：
30 Days PV： 4
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