NDLI: PdPt bimetallic nanoparticles enabled by shape control with halide ions and their enhanced catalytic activities

Content Provider	Royal Society of Chemistry (RSC)
Author	Zhang, Jinfeng Zhong, Cheng Hu, Wenbin Wan, Lei Deng, Yida Liu, Lei
Copyright Year	2016
Abstract	In this study, a new and convenient one step approach is described for synthesizing shape controlled PdPt bimetallic nanoparticles. It is found that the resultant morphologies of these PdPt nanoparticles can be well controlled by simply altering the participation of different halide ions that serve as shape controlling agents in the reaction solution. The dendritic core–shell PdPt bimetallic nanoparticles generated with Pt atoms adopt usual island growth pattern in the presence of Cl− ions, whereas the introduction of Br− ions with a relatively strong adsorption effect facilitate the formation of a layered core–shell structure due to the layered growth mode of Pt atoms on the exterior surface of the central Pd core. Moreover, the stronger adsorption function of I− ions and the resulting fast atomic diffusion promoted the generation of mesoporous core–shell PdPt bimetallic nanoparticles with many pore channels. In addition, the size of these synthesized PdPt nanoparticles exhibited a significant dependence on the concentration of the halide ions involved. Due to their specific structural features and synergistic effects, these PdPt catalysts exhibited shape-dependent catalytic performance and drastically enhanced electrocatalytic activities relative to that of commercial Pt black and Pt/C toward methanol oxidation.
Starting Page	3962
Ending Page	3972
Page Count	11
File Format	HTM / HTML PDF
ISSN	20403364
Volume Number	8
Issue Number	7
Journal	Nanoscale
DOI	10.1039/c5nr05971b
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Halide Mesoporous material Adsorption Island growth Correlation and dependence Atomic diffusion Methanol
Content Type	Text
Resource Type	Article
Subject	Nanoscience and Nanotechnology

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