Boosting non-sacrificial H2O2 production on a Bi6S2O15 photocatalyst via creating a crystal surface-dependent internal electric field

被引：8
作者：
Bian, Gaoming [1 ,2 ]
Wang, Chen [3 ]
Zhang, Yaning [1 ,2 ]
Li, Junshan [4 ]
Lou, Yang [1 ,2 ]
Zhang, Ying [1 ,2 ]
Dong, Yuming [1 ,2 ]
Xu, Jing [5 ]
Zhu, Yongfa [1 ,2 ,6 ]
Pan, Chengsi [1 ,2 ]
机构：
[1] Jiangnan Univ, Sch Chem & Mat Engn, Key Lab Synthet & Biol Colloids, Minist Educ, Wuxi 214122, Jiangsu, Peoples R China
[2] Jiangnan Univ, Int Joint Res Ctr Photorespons Mol & Mat, Wuxi 214122, Jiangsu, Peoples R China
[3] Harbin Zhongke Mat Engn Co Ltd, Harbin 150040, Heilongjiang, Peoples R China
[4] Chengdu Univ, Inst Adv Study, Chengdu 610106, Peoples R China
[5] Jiangnan Univ, Sch Food Sci & Technol, Wuxi 214122, Peoples R China
[6] Tsinghua Univ, Dept Chem, Beijing 100084, Peoples R China
来源：
JOURNAL OF MATERIALS CHEMISTRY A | 2023年 / 11卷 / 02期
基金：
国家重点研发计划; 中国国家自然科学基金;
关键词：
HYDROGEN-PEROXIDE; GENERATION; OXIDE; REDUCTION; TEMPERATURE; SEPARATION; HYDROXYL; NANORODS; OXYGEN; BIOCL;
D O I：
10.1039/d2ta08722g
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Photocatalytic H2O2 production from H2O and O-2 is a green technology, but the available photocatalysts are limited, due to multi-step charge transfer-originated recombination. In this work, Bi6S2O15 (BSO) photocatalysts exposed with (110), (400), and (-130) surfaces, respectively, are newly studied to produce H2O2 from only H2O and O-2. The crystal surface-dependent internal electric field (IEF) is found to strongly inhibit the rapid charge recombination by generating high charge density at the surface and decreasing the electrostatic potential energy. In particular, BSO with the (110) surface exposed exhibits the highest H2O2 production activity (3.4 mM h(-1) g(-1)) under Xe lamp irradiation due to the strongest IEF. The effectiveness of IEF control on H2O2 production gives guidelines for developing more efficient photocatalysts in the future.
引用
收藏
页码：753 / 763
页数：11
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