Simple synthesis of bimetallic AuPd dendritic alloyed nanocrystals with enhanced electrocatalytic performance for hydrazine oxidation reaction. (1st February 2016)

• Record Type: Journal Article
• Authors: Chen, Li-Xian; Jiang, Liu-Ying; Wang, Ai-Jun; Chen, Qing-Yun; Feng, Jiu-Ju
• Is Part Of: Electrochimica acta. Volume 190(2016)
• Page Start: 872
• Page End: 878
• Publication Date: 2016-02-01
• Subjects: 3-Aminopyrazine-2-carboxylic acid -- Dendritic alloyed nanocrystal -- Successive co-reduction method -- Hydrazine oxidation reaction; Electrochemistry -- Periodicals; Electrochemistry, Industrial -- Periodicals; 541.37
• DOI: 10.1016/j.electacta.2015.12.151
• Languages: English
• ISSNs: 0013-4686

Abstract

Graphical abstract: A simple one-pot successive co-reduction method was developed to fabricate bimetallic AuPd dendritic alloy nanocrystals (AuPd DANCs) by using 3-aminopyrazine-2-carboxylic acid (Apzc) as a capping agent. Highlights: AuPd DANCs were prepared by a simple one-pot successive co-reduction method. 3-Aminopyrazine-2-carboxylic acid was acted as a capping agent. The architectures displayed highly enlarged electrochemical active surface area. The architectures showed enhanced electrocatalytic performance for HOR. Abstract: Herein, a simple one-pot successive co-reduction method was developed for synthesis of bimetallic AuPd dendritic alloyed nanocrystals (AuPd DANCs), in which 3-aminopyrazine-2-carboxylic acid was acted as a capping agent. The products were characterized by transmission electron microscopy (TEM), high angle annular dark-field scanning TEM, X-ray diffraction, and X-ray photoelectron spectroscopy. The electrocatalytic activity and stability of AuPd DANCs were evaluated by cyclic voltammetry and chronoamperometry toward hydrazine oxidation reaction (HOR), showing the enhanced catalytic performance as compared with AuPd nanocrystals, Pd nanocrystals and commercial Pd black catalysts. Additionally, the catalytic mechanism and kinetics of HOR were further explored by linear sweep voltammetry, showing the potential applications of AuPd DANCs in fuel cells.