Reversible Cu+/Cu2+ cycles enable enhanced carrier separation for efficient photocatalytic ammonia synthesis

Weiwei Shao; You Yang; Yang Shen; Chengbin Zhang; Yuanyuan Wang; Yingfei Hu; Yang Wu; Jun Hu; Junfa Zhu; Hangmin Guan; Xiaolong Zu; Xiaodong Li; Xingchen Jiao

doi:10.1039/D6CC01839D

Reversible Cu⁺/Cu²⁺ cycles enable enhanced carrier separation for efficient photocatalytic ammonia synthesis

Weiwei Shao,^a You Yang,^a Yang Shen,^a Chengbin Zhang,^e Yuanyuan Wang,

^a Yingfei Hu,

^a Yang Wu,^b Jun Hu,^b Junfa Zhu,

^b Hangmin Guan,

*^a Xiaolong Zu,^c Xiaodong Li*^d and Xingchen Jiao

*^e

Author affiliations

* Corresponding authors

^a School of Materials Engineering, Jinling Institute of Technology, Nanjing 211169, China
E-mail: guan@jit.edu.cn

^b National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230026, China

^c Innovation Laboratory for Sciences and Technologies of Energy Materials of Fujian Province (IKKEM), Xiamen 361005, China

^d Max Planck Institute of Microstructure Physics, Weinberg 2, Halle 06120, Germany
E-mail: Xiaodong.li@tu-dresden.de

^e Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, China
E-mail: xcjiao@jiangnan.edu.cn

Abstract

A reversible Cu⁺/Cu²⁺ cycling strategy is developed to enhance the extraction of photoexcited electrons. Cu-doped BiVO₄ with an adjustable Cu⁺/Cu²⁺ ratio is selected as the prototype. The charge separation efficiency is improved by 25.6%, with the NH₄⁺ generation rate reaching six times that of the pristine sample.

Chemical Communications

Reversible Cu⁺/Cu²⁺ cycles enable enhanced carrier separation for efficient photocatalytic ammonia synthesis

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Reversible Cu⁺/Cu²⁺ cycles enable enhanced carrier separation for efficient photocatalytic ammonia synthesis

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