期刊
NANOTECHNOLOGY
卷 29, 期 31, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/1361-6528/aac3e8
关键词
Ag NPs/RGO-LS; high-efficient catalytic reduction; reusability; 4-nitrophenol
资金
- Science and Technology Major Project of Shanxi Province [2017YFA0205800, MC2016-06]
- National Natural Science Foundation of China [21173041]
- Opening Project of Jiangsu Key Laboratory of Advanced Metallic Materials, China
Noble metal nanoparticles (NPs) such as Au and Ag have shown many applications in the field of catalysis, sensing etc. due to their excellent photoelectric properties. But agglomeration and a low recovery rate are big problems for their applications. In this research, a novel Ag NPs/graphene (reduced graphene oxide)-loading loofah sponge (Ag NPs/RGO-LS) was synthesized through a one-step reduction method. Where the RGO is used as a nano-support with the high specific surface area and the high conductivity to prevent the agglomeration of Ag NPs and provide a conductive layer. The natural, green, low-cost and high-yield LS is designed as a macro-support to reduce the loss of Ag NPs during recycling. The as-prepared Ag NPs/RGO-LS is stable, uniform, and exhibits high efficiency and reusability in the catalytic reduction of 4-nitrophenol (4-NP) with a high rate constant of 1.893 min(-1) as well as an average conversion of 98% in 6 min during five cycles. The results have not only paved the way for the wide application of Ag NPs but also provide a new road for the application of other metal NPs.
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