Porous dandelion-like gold@ palladium core-shell nanocrystals in-situ growth on reduced graphene oxide with improved electrocatalytic properties. (10th May 2016)

• Record Type: Journal Article
• Authors: He, Li-Li; Song, Pei; Feng, Jiu-Ju; Fang, Rui; Yu, Dan-Xia; Chen, Jian-Rong; Wang, Ai-Jun
• Is Part Of: Electrochimica acta. Volume 200(2016)
• Page Start: 204
• Page End: 213
• Publication Date: 2016-05-10
• Subjects: In-situ growth -- Reduced graphene oxide -- Iodide ion -- Core-shell nanostructures -- Methanol oxidation reaction; Electrochemistry -- Periodicals; Electrochemistry, Industrial -- Periodicals; 541.37
• DOI: 10.1016/j.electacta.2016.03.098
• Languages: English
• ISSNs: 0013-4686

Abstract

Graphical abstract: Abstract: A one-pot wet-chemical co-reduction route is designed for preparation of porous dandelion-like Au@Pd core-shell nanostructures in-situ grown on reduced grapheneoxide (Au@Pd/rGO) without using any premade seed. Cetyltrimethylammonium chloride (CTAC) and iodide ion (I − ) play important roles in this synthetic procedure. Particularly, the Pd shell thickness, particle size, composition and catalytic activity can be tuned by adjusting the concentrations of I − . The effects of composition and structure of the as-synthesized nanocomposites on the catalytic performance are investigated. The dandelion-like Au@Pd/rGO exhibited higher catalytic activity and stronger tolerance to carbonaceous species poisoning for methanol oxidation reaction (MOR) in contrast with Pd/rGO and commercial Pd/C catalysts in alkaline media. This strategy offers a new approach for controlled synthesis of novel nanocatalysts with enhanced catalytic performances in fuel cell.