Au-nanoparticle-supported ZnO as highly efficient photocatalyst for H2O2 production

Authors

Xianguang Meng, North China University of Science and Technology, City University of Hong Kong
Peixiao Zong, North China University of Science & Technology
Liang Wang, University of WollongongFollow
Fan Yang, Tianjin University
Weishu Hou, Tianjin University
Songtao Zhang, Yangzhou University
Bingdong Li, North China University of Science & Technology
Zhaoliang Guo, North China University of Science & Technology
Shanshan Liu, North China University of Science & Technology
Guifu Zuo, North China University of Science & Technology
Yi Du, University of WollongongFollow
Tao Wang, Nanjing University of Aeronautics and Astronautics
Vellaisamy A. L Roy, City University of Hong Kong

RIS ID

139900

Publication Details

Meng, X., Zong, P., Wang, L., Yang, F., Hou, W., Zhang, S., Li, B., Guo, Z., Liu, S., Zuo, G., Du, Y., Wang, T. & Roy, V. A. L. (2020). Au-nanoparticle-supported ZnO as highly efficient photocatalyst for H2O2 production. Catalysis Communications, 134 105860-1-105860-4.

Abstract

In this study, Au-nanoparticle-supported crystalline ZnO (Au/ZnO) is found to be a simple and efficient photocatalyst for direct H2O2 synthesis in an aerated aqueous solution. Compared with widely studied Au-nanoparticle-supported anatase TiO2 photocatalyst, Au/ZnO shows almost one order of magnitude higher activity in H2O2 production. The site-specific deposition of smaller Au nanococatalyst on ZnO delivers best photocatalytic performance and the H2O2 production is relatively stable with a rate more than 1.5 mmol L−1 h−1. The electron spin resonance studies reveal that the H2O2 is produced through direct 2e− oxygen reduction over the optimized Au/ZnO photocatalyst.