[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卷
Number of periods:
2020 06
Page number:
85-91
Column:
Public date:
2020-12-31
- Title:
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Wet-chemistry Fabrication of Pd/CeO2 Interfaces and Comparison with Pd/SnO 2 in terms of Formate and Ethanol Electro-oxidation Catalysis
- Author(s):
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WANG Jianjian; YAN Jiejie; ZHANG Chong; XI Jingyu; ZHAO Jianhong; SONG Chengying
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School of Chemistry, Zhengzhou University, Zhengzhou 450001, Henan Province, China; Shenzhen International Graduate School, Tsinghua University Guangdong Shenzhen 518005, China
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- Keywords:
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Preparation by wet chemical method; Interface construction; Pd/CeO2; Pd/SnO2; Formate electrooxidation; Ethanol electrooxidation
- CLC:
-
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- DOI:
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10.13705/j.issn.1671-6833.2020.06.007
- Abstract:
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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.