A facile construction of Au nanoparticles on a copolymer ligand brushes modified graphene oxide nanoplatform with excellent catalytic properties. Issue 69 (11th July 2016)

• Record Type: Journal Article
• Authors: Song, Yajiao; Lü, Jianhua; Liu, Bingxin; Lü, Changli
• Is Part Of: RSC advances. Volume 6:Issue 69(2016)
• Page Start: 64937
• Page End: 64945
• Publication Date: 2016-07-11
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/c6ra11710d
• Languages: English
• ISSNs: 2046-2069

Abstract

Abstract : Au NPs were generated via in situ reduction on copolymer brush P(OEGMA- co -MQ) functionalized GO. MQ units in the brushes as capping agents could stabilize the Au NPs. The Au NPs–GO hybrid exhibited high catalytic activity for the reduction of 4-NP. Abstract : In this paper, we described an effective method for the in situ synthesis of Au nanoparticles (Au NPs) on 8-hydroxyquinoline ligands-containing copolymer brushes modified graphene oxide (GO) nanosheets. The copolymer brushes of P(OEGMA- co -MQ) were grafted from the surface of GO by reversible addition–fragmentation chain transfer (RAFT) polymerization based on the monomers of oligo(ethylene glycol) monomethyl ether methacrylate (OEGMA) and 5-(2-methacryloyl-ethyloxymethyl)-8-quinolinol (MQ). Au NPs were generated via in situ reduction of Au 3+ by an alkali and the 8-hydroxyquinoline units in the copolymer brushes were used as capping agents to stabilize Au NPs. The obtained Au NPs–GO hybrids exhibited a weak blue fluorescence emission at 475 nm and high catalytic activity in water for the reduction of 4-nitrophenol (4-NP).