Dual-plasmon-enhanced nitrophenol hydrogenation over W18O49–Au heterostructures studied at the single-particle level. Issue 5 (23rd January 2023)

• Record Type: Journal Article
• Authors: Xu, Yayang; Yu, Shiqiang; Tong, Fengxia; Wang, Zeyan; Wang, Peng; Liu, Yuanyuan; Cheng, Hefeng; Fan, Yuchen; Wei, Wei; Dai, Ying; Zheng, Zhaoke; Huang, Baibiao
• Is Part Of: Catalysis science & technology. Volume 13:Issue 5(2023)
• Page Start: 1301
• Page End: 1310
• Publication Date: 2023-01-23
• Subjects: Catalysis -- Periodicals; 541.395
• DOI: 10.1039/d2cy02071h
• Languages: English
• ISSNs: 2044-4753

Abstract

Abstract : The dual-plasmonic W18 O49 –Au heterostructure exhibited enhanced catalytic performance in nitrophenol hydrogenation. The HEI process and coupling effect were demonstrated by single-particle spectroscopy and FDTD simulation. Abstract : The use of plasmonic materials is an effective way to enhance light absorption and thus boost catalytic performance in photocatalysis. In this study, W18 O49 –Au heterostructures were constructed to couple the advantages of both W18 O49 and Au, enhancing the light absorption and carrier separation ability of this dual-plasmonic system. The W18 O49 –Au heterostructures exhibited highly enhanced performance for nitrophenol hydrogenation, and the rate constant reached 0.2044 min −1, which was 12 and 102 times higher than that of Au and W18 O49, respectively. Besides, a hot electron injection process from W18 O49 to Au was demonstrated by single-particle photoluminescence (PL) spectroscopy, which is beneficial for boosting the performance, because Au is the active site in this reaction. This finding will shed light on the coupling effect and energy transfer process in the dual-plasmonic system.