Tunable Surface Electric Field of Electrocatalysts via Constructing Schottky Heterojunctions for Selective Conversion of Trash Ions to Treasures

Surface electric field of catalyst is widely recognized as one of the key points to boost catalytic activity. However, there is still a lack of convenient ways to tune the surface electric field to selectively boost the catalytic conversions of different types of reactants in specific catalytic reac...

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Published inChemistry : a European journal Vol. 28; no. 14; pp. e202103918 - n/a
Main Authors Zhang, Shi‐Nan, Gao, Peng, Sun, Lu‐Han, Chen, Jie‐Sheng, Li, Xin‐Hao
Format Journal Article
LanguageEnglish
Published Germany Wiley Subscription Services, Inc 07.03.2022
Subjects
Anions
Catalysts
Catalytic activity
Catalytic converters
cations
Chemical reduction
Chemistry
Conversion
Electric fields
Electrocatalysts
electrode material
Electrode materials
Heterojunctions
Ions
Oxygen evolution reactions
rectifying interfaces
Schottky heterojunctions
surface electric fields
rectifying interfaces
Anions
cations
electrode material
Schottky heterojunctions
surface electric fields
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Summary:Surface electric field of catalyst is widely recognized as one of the key points to boost catalytic activity. However, there is still a lack of convenient ways to tune the surface electric field to selectively boost the catalytic conversions of different types of reactants in specific catalytic reactions. Here, we introduce a conceptually new method to tune the surface electric field of electrode materials by adjusting the number and density of heterojunctions inside. Both theoretical and experimental results prove that the well‐designed surface electric field of an electrocatalyst plays a key role in facilitating pre‐adsorption and/or activation of reactants for selective conversion of trash ions to useful products in hydrogen and oxygen evolution reactions as well as NOx− reduction reactions. A conceptually new method is proposed to tune the surface electric field of electrocatalysts by adjusting the number and density of heterojunctions inside. The well‐designed surface electric field of an electrocatalyst plays a key role in facilitating pre‐adsorption and/or activation of reactants for selective conversion of trash ions to useful products.
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ISSN:0947-6539
1521-3765
DOI:10.1002/chem.202103918