文献类型：期刊文献

英文题名：Facile and green synthesis of Au nanorods/graphene oxide nanocomposite with excellent catalytic properties for reduction of 4-nitrophenol

作者：Fang, Jiali[1,2];Chen, Xin[1,2];Wu, Yulian[1,2];Liu, Haiyang[1,2]

机构：[1]East China Univ Sci & Technol, Sch Mat Sci & Engn, Minist Educ, Key Lab Ultrafine Mat, Meilong Rd 130, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Sch Mat Sci & Engn, Shanghai Key Lab Adv Polymer Mat, Meilong Rd 130, Shanghai 200237, Peoples R China

年份：2020

卷号：55

期号：14

起止页码：5880

外文期刊名：JOURNAL OF MATERIALS SCIENCE

收录：;EI(收录号：20200608142970);WOS:【SCI-EXPANDED(收录号:WOS:000515966400003)】；

基金：We gratefully acknowledge the support of the National Natural Science Foundation of China (No. 21875066), Shanghai Leading Academic Discipline Project (No. B502) and Shanghai Key Laboratory Project (No. 08DZ2230500).

语种：英文

外文关键词：Gold compounds - Nanocomposites - Catalyst activity

摘要：In this paper, we report a facile and green method to synthesize Au nanorods (AuNRs)/graphene oxide (GO) nanocomposites. In this approach, cetyltrimethylammonium bromide (CTAB) acted not only as a shape-directing agent but also as an assembling agent. The AuNRs/GO nanocomposites were prepared through electrostatic self-assembly between CTAB-capped positively charged AuNRs and negatively charged GO in an aqueous solution without introducing other assembling agents or surfactants. The catalytic performance of the obtained catalysts is evaluated with TOF, TOF1/2 and k(app) values. Due to the increased effectiveness from the charge-mediated assembly, these AuNRs/GO nanocomposites showed high performance in the catalytic reduction of 4-nitrophenol to 4-aminophenol. The AuNRs/GO ratio was optimized, and the nanocomposite with a mass ratio 1:0.4 showed the best catalytic activity, achieving a k(app) value of 1.69 min(-1), which was not only 19.7 times better than the AuNRs, but also significantly better than the catalytic performance of Au/graphene and Au/GO composites reported in the literature.