Anchoring Gold Nanoparticles on Graphene Nanosheets Functionalized with Cationic Polyelectrolyte: A Novel Catalyst for 4-Nitrophenol Reduction

作者：Qin Xiaoyun; Lu Wenbo; Luo Yonglan; Chang Guohui; Asiri Abdullah M; Al Youbi Abdulrahman O; Sun Xuping^*

来源：Journal of Nanoscience and Nanotechnology, 2012, 12(4): 2983-2989.

DOI：10.1166/jnn.2012.5818

• Gold Nanoparticle
• Graphene Nanosheet
• PQ11
• Catalyst
• 4-Nitrophenol

In this paper, a stable aqueous dispersion of graphene nanosheets (GNs) has been prepared by chemical reduction of graphene oxide (GO) with hydrazine hydrate in the presence of poly [(2-ethyldimethylammonioethyl methacrylate ethyl sulfate)-co-(1-vinylpyrrolidone)] (PQ11). Taking advantages of the fact that PQ11 is a positively charged polymer exhibiting reducing ability, we further demonstrated the subsequent decoration of GN with gold nanoparticals (AuNPs) by in-situ chemical reduction of HAuCl4. It was found that such nanocomposites exhibit good catalytic activity toward 4-nitrophenol (4-NP) reduction and the GN supports also enhance the catalytic activity via a synergistic effect.

• 出版日期2012-4
• 单位西华师范大学