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Red Carbon Mediated Formation of Cu2O Clusters Dispersed on the Oxocarbon Framework by Fehling's Route and their Use for the Nitrate Electroreduction in Acidic Conditions.
Ba, Jingwen; Dong, Hongliang; Odziomek, Mateusz; Lai, Feili; Wang, Rui; Han, Yandong; Shu, Jinfu; Antonietti, Markus; Liu, Tianxi; Yang, Wensheng; Tian, Zhihong.
Afiliación
  • Ba J; Engineering Research Center for Nanomaterials, Henan University, Kaifeng, 475004, P. R. China.
  • Dong H; Center for High Pressure Science and Technology Advanced Research, Shanghai, 201203, P. R. China.
  • Odziomek M; Department of Colloid Chemistry, Max Planck Institute of Colloids and Interfaces, Am Mühlenberg 1, 14476, Potsdam, Germany.
  • Lai F; Department of Chemistry, KU Leuven, Celestijnenlaan 200F, Leuven, 3001, Belgium.
  • Wang R; Engineering Research Center for Nanomaterials, Henan University, Kaifeng, 475004, P. R. China.
  • Han Y; Engineering Research Center for Nanomaterials, Henan University, Kaifeng, 475004, P. R. China.
  • Shu J; Center for High Pressure Science and Technology Advanced Research, Shanghai, 201203, P. R. China.
  • Antonietti M; Department of Colloid Chemistry, Max Planck Institute of Colloids and Interfaces, Am Mühlenberg 1, 14476, Potsdam, Germany.
  • Liu T; Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi, 214122, P. R. China.
  • Yang W; Engineering Research Center for Nanomaterials, Henan University, Kaifeng, 475004, P. R. China.
  • Tian Z; Engineering Research Center for Nanomaterials, Henan University, Kaifeng, 475004, P. R. China.
Adv Mater ; 36(25): e2400396, 2024 Jun.
Article en En | MEDLINE | ID: mdl-38528795
ABSTRACT
The oligomers of carbon suboxide, known as red carbon, exhibit a highly conjugated structure and semiconducting properties. Upon mild heat treatment, it transforms into a carbonaceous framework rich in oxygen surface terminations, called oxocarbon. In this study, the abundant oxygen functionalities are harnessed as anchors to create oxocarbon-supported nanohybrid electrocatalysts. Starting with single atomic Cu (II) strongly coordinated to oxygen atoms on red carbon, the Fehling reaction leads to the formation of Cu2O clusters. Simultaneously, a covalent oxocarbon framework emerges via cross-linking, providing robust support for Cu2O clusters. Notably, the oxocarbon support effectively stabilizes Cu2O clusters of very small size, ensuring their high durability in acidic conditions and the presence of ammonia. The synthesized material exhibits a superior electrocatalytic activity for nitrate reduction under acidic electrolyte conditions, with a high yield rate of ammonium (NH4 +) at 3.31 mmol h-1 mgcat -1 and a Faradaic efficiency of 92.5% at a potential of -0.4 V (vs RHE).
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Adv Mater Asunto de la revista: BIOFISICA / QUIMICA Año: 2024 Tipo del documento: Article Pais de publicación: Alemania
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Adv Mater Asunto de la revista: BIOFISICA / QUIMICA Año: 2024 Tipo del documento: Article Pais de publicación: Alemania