Chinese Journal of Catalysis ›› 2017, Vol. 38 ›› Issue (6): 1038-1044.DOI: 10.1016/S1872-2067(17)62780-3

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Fabrication, characterization and electrochemical properties of porous palladium bulk samples with high porosity and hierarchical pore structure

Qingquan Konga, Wei Fenga, Xiaodong Zhua, Jing Zhangb, Chenghua Sunc   

  1. a. School of Mechanical Engineering, Chengdu University, Chengdu 610106, Sichuan, China;
    b. School of Materials Science and Engineering, Sichuan University, Chengdu 610065, Sichuan, China;
    c. School of Chemistry, Faculty of Science, Monash University, Clayton, VIC 3800, Australia
  • Received:2016-11-30 Revised:2017-01-05 Online:2017-06-18 Published:2017-06-08
  • Supported by:

    This work was supported by the National Natural Science Foundation of China (11572057) and the School Foundation of Chengdu University (2080516030)

Abstract:

In the present study, porous bulk palladium samples were prepared by sodium chloride salt powder spacer incorporation and removal combined with dealloying. The obtained porous Pd bulks were characterized by X-ray diffraction, field-emission scanning electron microscopy and N2 adsorption isotherm measurements. The prepared porous Pd bulk samples showed a hierarchical pore structure, a high porosity of ~88%, a high surface area of ~54 m2/g, and a compression strength of ~0.5 MPa. Electrochemical measurements were performed to evaluate the electrocatalytic properties of the porous Pd bulk samples, revealing their effectiveness for ethanol oxidation.

Key words: Palladium, Hierarchical porous structure, Electrocatalysis, Ethanol oxidation, Spark plasma sintering