Preparation and Catalytic Performance of Microporous Polymer/Au Nanoparticles Composite Microspheres
来源期刊：Journal Of Wuhan University Of Technology Materials Science Edition2020年第2期
论文作者：郭纯 ZHANG Lijuan ZHAO Yan LI Mengyuan WANG Xiaotao 张高文
文章页码：464 - 468
摘 要：Polystyrene crosslinked microspheres were prepared by soap-free emulsion polymerization using styrene （St） and divinylbenzene （DVB） as monomers;then,the microporous structure was knitted by the Friedel-Crafts alkylation reaction,and the Au nanoparticles （AuNPs） were loaded into the pores through thermal reduction,to obtain AuNPs/ hyper-crosslinked microporous polymer composite microspheres.SEM and particle-size test results show that the microspheres show good monodispersity.The micropore analysis indicates that the specific surface area and the pore volume of the microporous polymer microspheres decrease with increasing DVB content,and when the DVB content is 0.1%,the specific surface area reaches a maximum of 1 174.6 m2/g.After loading AuNPs,the specific surface area and the amount of micropores of the composite microspheres decrease obviously.The results of XRD and XPS analyses suggest that HAuCl4 is reduced to AuNPs.The composite microspheres show a good catalytic performance for the reduction catalyst of 4-nitrophenol.
郭纯，ZHANG Lijuan，ZHAO Yan，LI Mengyuan，WANG Xiaotao，张高文
School of Materials and Chemical Engineering, Hubei Provincial Key Laboratory of Green Materials for Light Industry, Hubei University of Technology
摘 要：Polystyrene crosslinked microspheres were prepared by soap-free emulsion polymerization using styrene （St） and divinylbenzene （DVB） as monomers;then,the microporous structure was knitted by the Friedel-Crafts alkylation reaction,and the Au nanoparticles （AuNPs） were loaded into the pores through thermal reduction,to obtain AuNPs/ hyper-crosslinked microporous polymer composite microspheres.SEM and particle-size test results show that the microspheres show good monodispersity.The micropore analysis indicates that the specific surface area and the pore volume of the microporous polymer microspheres decrease with increasing DVB content,and when the DVB content is 0.1%,the specific surface area reaches a maximum of 1 174.6 m2/g.After loading AuNPs,the specific surface area and the amount of micropores of the composite microspheres decrease obviously.The results of XRD and XPS analyses suggest that HAuCl4 is reduced to AuNPs.The composite microspheres show a good catalytic performance for the reduction catalyst of 4-nitrophenol.
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