Tailoring crystal facet microenvironments for simultaneous electrochemical ozone and hydrogen peroxide production

Developing a bifunctional electrocatalyst that can effectively produce O3 and H2O2 is significant for the electrochemical synthesis of O3 and H2O2 for the synergistic oxidative degradation of organic pollutants. In this study, SnO with various exposed facets was synthesized by tailoring the crystal...

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Bibliographic Details
Published in:AIChE journal 2023-10, Vol.69 (10), p.n/a
Main Authors: Wang, Xiaosa, Li, Jiayuan, Ding, Lei, Shi, Huaijie, Liu, Jia, Yang, Xinying, Li, Min, Zhong, Xing, Yao, Zihao, Wang, Jianguo
Format: Article
Language:English
Subjects:
Adsorption
Chemical reduction
Chemical synthesis
crystal facet
Crystals
Electrocatalysts
Electrochemical oxidation
electrochemical ozone production
Electrochemistry
electrodegradation
Hydrogen peroxide
Intermediates
Microenvironments
Oxidation
oxygen reduction reaction
Oxygen reduction reactions
Ozone
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Summary:Developing a bifunctional electrocatalyst that can effectively produce O3 and H2O2 is significant for the electrochemical synthesis of O3 and H2O2 for the synergistic oxidative degradation of organic pollutants. In this study, SnO with various exposed facets was synthesized by tailoring the crystal facet microenvironment for oxygen intermediates adsorption for electrochemical ozone production (EOP) and two‐electron oxygen reduction reaction (2e− ORR). The Faraday efficiency of SnO‐1 with a high (110) facet ratio for O3 was 22.0%, while SnO‐4 with a high (002) facet ratio achieved a selectivity of 93.6% for H2O2. The theoretical calculation indicates that their excellent performances originated from the strong adsorption of the (110) facet on O* and O2* and the suitable adsorption and desorption strength of the (002) facet on OOH*, respectively. This study provides an attractive strategy for the development of a bifunctional electrocatalyst for advanced electrochemical oxidation by tailoring the crystal facet microenvironment.
ISSN:0001-1541
1547-5905
DOI:10.1002/aic.18152