Surfactant-free synthesis of reduced graphene oxide supported porous PtAu alloyed nanoflowers with improved catalytic activityElectronic supplementary information (ESI) available. See DOI: 10.1039/c5ta00041f

• Main Authors: Song, Pei, He, Li-Li, Wang, Ai-Jun, Mei, Li-Ping, Zhong, Shu-Xian, Chen, Jian-Rong, Feng, Jiu-Ju
• Format: Journal Article
• Language: English
• Published: 24.02.2015
• ISSN: 2050-7488; 2050-7496
• DOI: 10.1039/c5ta00041f

A simple and facile one-pot wet-chemical co-reduction method was developed for the synthesis of reduced graphene oxide supported porous PtAu alloyed nanoflowers (PtAu-nanoflowers/rGO). p -Aminopyridine was employed as a structure-directing agent and a stabilizing agent. No seed, template, surfactant, or polymer was involved in the synthesis process. It was found that the reaction temperature and the dosage of p -aminopyridine were essential for the final product. Furthermore, the as-prepared nanocomposites showed improved catalytic activity for the reduction of 4-nitrophenol in contrast to monometallic Pt nanocrystals/rGO, Au nanocrystals/rGO, and commercial Pt/C (50 wt%). A simple, facile one-pot wet-chemical co-reduction method was developed for synthesis of porous PtAu-nanoflowers/rGO with the assistance of p -aminopyridine. The as-prepared nanocomposites displayed excellent catalytic activity for 4-nitrophenol reduction.