Citation: MEI Su-Juan, WU Jun-Jie, LU Shuang-Long, CAO Xue-Qin, GU Hong-Wei, TANG Ming-Hua. Facile Synthesis of Concave Dendritic PtCu Nanoparticles with Enhanced Methanol Electro-oxidation Activities[J]. Chinese Journal of Inorganic Chemistry, ;2015, (12): 2298-2304. doi: 10.11862/CJIC.2015.317 shu

Facile Synthesis of Concave Dendritic PtCu Nanoparticles with Enhanced Methanol Electro-oxidation Activities

1.
1 Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou, Jiangsu 215123, China;
2.
2 Analysis and Testing Center, Soochow University, Suzhou, Jiangsu 215123, China

Corresponding author: GU Hong-Wei,
Received Date: 19 May 2015
Available Online: 3 October 2015
Fund Project: 国家自然科学基金(No.21373006) (No.21373006)

Concave dendritic PtCu bimetallic nanocatalysts (PtCu NCDs) was prepared by one-step method in a Teflon-lined stainless steel autoclave with o-phenylenediamine as surface active agent. In the reaction system, o-phenylenediamine plays an important role in initiating, promoting and guiding replacement reaction. The PtCu NCDs exhibited exceptionally high activity and strong poisoning resistance in methanol oxidation reaction (MOR). The mass activity of PtCu NCDs (0.53 A·mg^-1 Pt) was 2.04 times higher than that of the commercial Pt/C catalysts (0.26 A·mg^-1 Pt) in MOR. The specific activity of PtCu NCDs (1.07 mA·cm^-2) was 1.95 times higher than that of the commercial Pt/C catalysts (0.55 mA·cm^-2). Moreover, PtCu NCDs (2.76) showed a higher ratio of I_f/I_b than the commercial Pt/C catalysts (1.02). The enhanced catalytic activity could be owed to the unique concave dendritic morphology of the bimetallic nanoparticles.
- PtCu nanocatalysts;concave dendritic;methanol;electrocatalytic oxidation
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