Xing Guoke, Wang Wenqin, Wang Ke, Li Ping, Chen Tao
Faculty of Materials Science and Chemical Engineering, Ningbo University, 818 Fenghua Road, Ningbo, 315211, China.
Ningbo Institute of Materials Technology and Engineering Chinese Academy of Sciences, 1219 Zhongguan West Road, Ningbo, 315201, China.
Chemistry. 2017 Dec 11;23(69):17549-17555. doi: 10.1002/chem.201703183. Epub 2017 Nov 15.
Controlling the shape of the conducting polymer-noble metal composites is a key factor in determining their properties and applications. In this paper, we demonstrate a novel strategy to fabricate Au-polypyrrole (PPy) composites with unusual morphology using poly(4-vinylpyridine) (P4VP) brush grafted on graphene oxide (GO) as a reaction chamber. When the GO/P4VP brush bearing AuCl ions is exposed to pyrrole vapor or directly immersed into pyrrole solution, novel Au-PPy nanotubules and flower-like Au mesoparticles-PPy composites are formed on the surface of GO/P4VP brush, respectively. The application of the as-prepared GO/P4VP/Au-PPy composites in catalysis and surface-enhanced Raman scattering (SERS) are investigated. The relevant results exhibit that the GO/P4VP/Au-PPy nanotubules can act as an efficient catalyst for reduction of 4-nitrophenol, and the GO/P4VP/flower-like Au mesoparticles-PPy composites can be used as a sensor platform for the detection of organic molecules by SERS.
控制导电聚合物-贵金属复合材料的形状是决定其性能和应用的关键因素。在本文中，我们展示了一种新颖的策略，利用接枝在氧化石墨烯（GO）上的聚（4-乙烯基吡啶）（P4VP）刷作为反应腔，制备具有特殊形貌的金-聚吡咯（PPy）复合材料。当负载有AuCl离子的GO/P4VP刷暴露于吡咯蒸气中或直接浸入吡咯溶液时，分别在GO/P4VP刷表面形成了新型的金-聚吡咯纳米管和花状金介孔颗粒-聚吡咯复合材料。研究了所制备的GO/P4VP/金-聚吡咯复合材料在催化和表面增强拉曼散射（SERS）方面的应用。相关结果表明，GO/P4VP/金-聚吡咯纳米管可作为还原4-硝基苯酚的高效催化剂，而GO/P4VP/花状金介孔颗粒-聚吡咯复合材料可作为通过SERS检测有机分子的传感平台。
