Facile large-scale synthesis of Au–Pt alloyed nanowire networks as efficient electrocatalysts for methanol oxidation and oxygen reduction reactions. Issue 106 (14th October 2015)

• Record Type: Journal Article
• Authors: Song, Pei; Li, Shan-Shan; He, Li-Li; Feng, Jiu-Ju; Wu, Liang; Zhong, Shu-Xian; Wang, Ai-Jun
• Is Part Of: RSC advances. Volume 5:Issue 106(2015)
• Page Start: 87061
• Page End: 87068
• Publication Date: 2015-10-14
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/c5ra18133j
• Languages: English
• ISSNs: 2046-2069

Abstract

Abstract : A rapid one-pot wet-chemical method was developed for large-scale preparation of surface-clean AuPt alloyed nanowire networks with the assistance of N -methylimidazole as a structure-directing agent and a weak stabilizing agent. Abstract : In this work, bimetallic Au–Pt alloyed nanowire networks (AuPt NNs) were facilely synthesized by a simple and rapid one-pot wet-chemical method on a large-scale, using N -methylimidazole as a structure-directing agent and a weak stabilizing agent. The surface of AuPt NNs was clean owing to the easy removal of the adsorbed N -methylimidazole. The control experiments demonstrated that the morphologies of AuPt NNs were strongly correlated with the amount of N -methylimidazole and reaction temperature. The formation mechanism included the four-stage growth processes: rapid nucleation, selective adsorption, π–π induced assembly, and oriented attachment growth. The as-synthesized AuPt NNs exhibited enhanced electrocatalytic activity and improved stability for methanol oxidation reaction (MOR) and oxygen reduction reaction (ORR) as compared to commercial Pt black and individual Pt nanoparticles.