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

被引：6
作者：
Wang, Xiaosa [1 ]
Li, Jiayuan [1 ]
Ding, Lei [1 ]
Shi, Huaijie [1 ]
Liu, Jia [1 ]
Yang, Xinying [1 ]
Li, Min [1 ]
Zhong, Xing [1 ,2 ]
Yao, Zihao [1 ,2 ]
Wang, Jianguo [1 ,2 ]
机构：
[1] Zhejiang Univ Technol, Inst Ind Catalysis, Coll Chem Engn, State Key Lab Breeding Base Green Chem Synth Techn, Hangzhou, Peoples R China
[2] Zhejiang Univ Technol, Inst Ind Catalysis, Coll Chem Engn, State Key Lab Breeding Base Green Chem Synth Techn, Hangzhou 310032, Peoples R China
来源：
AICHE JOURNAL | 2023年 / 69卷 / 10期
基金：
中国国家自然科学基金;
关键词：
crystal facet; electrochemical ozone production; electrodegradation; microenvironments; oxygen reduction reaction; THIN-FILMS; TEMPERATURE; GENERATION; REDUCTION; EVOLUTION; CATALYST; ANODES; SHEETS; O-2;
D O I：
10.1002/aic.18152
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
Developing a bifunctional electrocatalyst that can effectively produce O-3 and H2O2 is significant for the electrochemical synthesis of O-3 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 O-3 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 O-2* 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.
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页数：12
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