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Citation: SUN Li-Mei, CAO Dian-Xue, WANG Gui-Ling, LU Yan-Zhuo, ZHANG Mi-Lin. Electrocatalytic Reduction of Hydrogen Peroxide on Pd Nanoparticles[J]. Acta Physico-Chimica Sinica, ;2008, 24(02): 323-327. doi: 10.3866/PKU.WHXB20080224 shu

Electrocatalytic Reduction of Hydrogen Peroxide on Pd Nanoparticles

1.
College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001，P. R. China

Received Date: 1 August 2007
Available Online: 4 January 2008

Electrocatalytic reduction of H2O2 on Pd nanoparticles in acidic medium was investigated by linear potential sweep method using an Au rotating disk electrode covered with Pd nanoparticles. The apparent activation energy for electroreduction of H2O2 on Pd nanoparticles was determined to be around 27.6 kJ·mol -1. The reaction proceeds via a two electron process. The type of anion of electrolytes significantly affected the catalytic behavior of Pd nanoparticles. A possible rate-determining step was proposed based on the dependence of kinetic current on the concentration of H2O2 and proton. The reaction mechanismwas briefly discussed.
- Palladiumnanoparticles; Hydrogen peroxide reduction; Electrocatalysis; Kinetics
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