Citation: XU Jia-Xin, JIANG Yan-Xia, LIAO Hong-Gang, CHEN Sheng-Pei, SUN Shi-Gang. Room Temperature Synthesis of Thorn-Like Pd Nanoparticles and Their Enhanced Electrocatalytic Property for Ethanol Oxidation[J]. Acta Physico-Chimica Sinica, ;2010, 26(08): 2139-2143. doi: 10.3866/PKU.WHXB20100804 shu

Room Temperature Synthesis of Thorn-Like Pd Nanoparticles and Their Enhanced Electrocatalytic Property for Ethanol Oxidation

1.
State Key Laboratory for Physical Chemistry of Solid Surfaces, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, P. R. China

Received Date: 10 February 2010
Available Online: 28 May 2010
Fund Project: 国家自然科学基金(20833005, 20873116, 60936003) (20833005, 20873116, 60936003)超分子结构和材料国家重点实验室(SKLSSM200910)资助项目 (SKLSSM200910)

Thorn-like Pd nanoparticles (Pd_n^thorn000) were synthesized at room temperature by a reduction of PdCl₂ with L-ascorbic acid and with choline chloride as a stabilizer. Characterization of Pdthornn000 by transmission electron microscopy and cyclic voltammetry indicated that the synthesized Pdthornn000 has a relatively high density of surface step sites. By comparison with the commercially available Pd black catalyst, P_n^dthorn000 exhibits better catalytic activity towards ethanol oxidation. The oxidation current density on Pd_n^thorn000 was 1.2 times (-0.40 - -0.30 V) - 1.5 times (-0.65 - -0.40 V) as that on Pd black, and the onset potential and the peak potential of ethanol oxidation both shifted 50 mV in the negative direction. The oxidation potential of ethanol on Pdthornn000 is lower at the same current density.
- Electrocatalysis,
- Thorn-like structure,
- Pd nanoparticle,
- Step site,
- Ethanol oxidation
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沈阳化工大学材料科学与工程学院沈阳 110142