Affordable Access

deepdyve-link
Publisher Website

Autocatalysis and selective oxidative etching induced synthesis of platinum-copper bimetallic alloy nanodendrites electrocatalysts.

Authors
  • Gong, Mingxing
  • Fu, Gengtao
  • Chen, Yu
  • Tang, Yawen
  • Lu, Tianhong
Type
Published Article
Journal
ACS Applied Materials & Interfaces
Publisher
American Chemical Society (ACS)
Publication Date
May 28, 2014
Volume
6
Issue
10
Pages
7301–7308
Identifiers
DOI: 10.1021/am500656j
PMID: 24801265
Source
Medline
License
Unknown

Abstract

The controllable synthesis of noble metal alloy nanostructures with highly branched morphology has attracted much attention because of their specific physical and chemical properties. This article reports the synthesis of platinum-copper bimetallic alloy nanodendrites (Pt-Cu BANDs) by a facile, one-pot, templateless, and seedless hydrothermal method in the presence of poly(allylamine hydrochloride) (PAH) and formaldehyde (HCHO). The morphology, composition, and structure of Pt-Cu BANDs are fully characterized by various physical techniques, demonstrating Pt-Cu BANDs are highly alloying, porous, and self-supported nanostructures. The formation/growth mechanism of Pt-Cu BANDs is explored and discussed based on the experimental observations. The autocatalytic growth and interdiffusion are responsible for the formation of Pt-Cu alloy whereas selective oxidative etching results in dendritic morphology of Pt-Cu alloy nanostructures. In addition, the electrocatalytic activity and stability of Pt-Cu BANDs for the methanol oxidation reaction (MOR) are investigated by various electrochemical techniques. The synthesized Pt-Cu BANDs show higher electrocatalytic activity and stability than commercially available Pt black.

Report this publication

Statistics

Seen <100 times