Photocatalytic Reduction Synthesis of Ternary Ag Nanoparticles/Polyoxometalate/Graphene Nanohybrids and Its Activity in the Electrocatalysis of Oxygen Reduction |
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| Authors: | Zhaowei Xian Rongji Liu Hang Li Shuangshuang Zhang Zhihua Yang Wanquan Zheng Chunhua Chen Hongbin Cao Guangjin Zhang |
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| Institution: | 1.Key Laboratory of Optoelectronic Chemical Materials and Devices of Ministry of Education, College of Chemical and Environmental Engineering,Jianghan University,Wuhan,China;2.Key Laboratory of Green Process and Engineering, Institute of Process Engineering,Chinese Academy of Sciences,Beijing,China;3.Jianghan University Institute for Interdisciplinary Research,Wuhan,China;4.University of Chinese Academy of Sciences,Beijing,China |
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| Abstract: | Ternary Ag nanoparticles (NPs)@polyoxometalate (POM)/reduced graphene oxide (rGO) nanohybrids were prepared by a facile photoreduction method, using POM as the photocatalyst, reducing and bridging molecules. The structure of the nanohybrids was characterized by transmission electron microscopy, X-ray photoelectron spectroscopy, X-ray diffraction, Raman spectroscopy, etc. Most importantly, both the rotating disk electrode and rotating ring-disk electrode tests indicated that the Ag NPs@POM/rGO nanohybrids exhibited excellent electrocatalytic activity towards oxygen reduction reaction via a direct four-electron transfer pathway due to the synergistic effect of Ag NPs and rGO. |
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