Wet-chemistry Fabrication of Pd/CeO2 Interfaces and Comparison with Pd/SnO 2 in terms of Formate and Ethanol Electro-oxidation Catalysis
[1]WANG Jianjian,YAN Jiejie,ZHANG Chong,et al.Wet-chemistry Fabrication of Pd/CeO2 Interfaces and Comparison with Pd/SnO 2 in terms of Formate and Ethanol Electro-oxidation Catalysis[J].Journal of Zhengzhou University (Engineering Science),2020,41(06):85-91.[doi:10.13705/j.issn.1671-6833.2020.06.007]
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Journal of Zhengzhou University (Engineering Science)[ISSN
1671-6833/CN
41-1339/T] Volume:
41
Number of periods:
2020 06
Page number:
85-91
Column:
Public date:
2020-12-31
- Title:
- Wet-chemistry Fabrication of Pd/CeO2 Interfaces and Comparison with Pd/SnO 2 in terms of Formate and Ethanol Electro-oxidation Catalysis
- Keywords:
- Preparation by wet chemical method; Interface construction; Pd/CeO2; Pd/SnO2; Formate electrooxidation; Ethanol electrooxidation
- CLC:
- -
- Abstract:
- Interfaces play vital role in various electrocatalysis and thus exploring cheap and facile method for fabricating interfaces is of great significance. In this study, a wet-chemistry method for fabricating Pd/CeO2 interfaces is proposed, in which Pd was in-situ reduced by Sn(OH) 2 while CeO 2 was formed through Ce 3+ enrichment and homogeneous precipitation onto Sn(OH) 4 that is transformed from Sn(OH) 2. The introduction of CeO2 is confirmed by scanning electron microscope , energy-dispersive spectroscopy and X-ray photoelectron spectroscopy. Electrochemical characterization shows that CeO2 replace SnO 2 surface and hardly lowers the electrochemical active surface area of Pd, meaning t hat me＜x＞tal oxides with poor electrical conductivity can be used by this fabrication method. Considering that Pd/CeO2 and Pd/SnO 2 are two widely used interfaces in electrocatalysts, Pd/CeO 2 and Pd/SnO 2 are further compared in terms of formate and ethanol oxidation using cyclic voltammetric and chronoamperometric measurement. It shows that Pd/CeO2 is more active than Pd/SnO 2 for formate and ethanol oxidation, the reason for which might be ascribed to Pd/CeO 2 interface that prohibits CO adsorption. We believe that the present study could provide simple avenue for fabricating interfaces between noble me＜x＞tals and me＜x＞tal oxides even with poor electrical conductivity.
- References:
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Last Update:
2021-02-10