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N-doped graphene aerogel cathode with internal aeration for enhanced degradation of p-nitrophenol by electro-Fenton process.
Tang, Qian; Luo, Sijia; Gao, Hang; Fan, Yixin; Bao, Wenqi; Gao, Yonghui; Sun, Yuwei; Yang, Chunwei.
Afiliación
  • Tang Q; Key Laboratory of Environmental Materials and Pollution Control, The Education Department of Jilin Province, Jilin Normal University, Siping, 136000, China. tangqian327@jlnu.edu.cn.
  • Luo S; School of Environmental Science and Engineering, Jilin Normal University, Siping, 136000, China. tangqian327@jlnu.edu.cn.
  • Gao H; School of Environmental Science and Engineering, Jilin Normal University, Siping, 136000, China.
  • Fan Y; School of Environmental Science and Engineering, Jilin Normal University, Siping, 136000, China.
  • Bao W; School of Environmental Science and Engineering, Jilin Normal University, Siping, 136000, China.
  • Gao Y; School of Environmental Science and Engineering, Jilin Normal University, Siping, 136000, China.
  • Sun Y; Key Laboratory of Environmental Materials and Pollution Control, The Education Department of Jilin Province, Jilin Normal University, Siping, 136000, China.
  • Yang C; Key Laboratory of Environmental Materials and Pollution Control, The Education Department of Jilin Province, Jilin Normal University, Siping, 136000, China.
Environ Sci Pollut Res Int ; 30(9): 23481-23493, 2023 Feb.
Article en En | MEDLINE | ID: mdl-36327069
A columnar N-doped graphene aerogel (NGA) was successfully fabricated by one-step hydrothermal synthesis using L-hydroxyproline as reductant, N-doping, and swelling agent, and it was used as the cathode with internal aeration mode for the electro-Fenton degradation of p-nitrophenol. Owing to the stable solid-liquid-gas three-phase interface, more active defects, and modulated nitrogen dopants, the NGA cathode exhibited enhanced electrocatalytic activity. H2O2 could be continuously electro-generated via a two-electron oxygen reduction, and the yield of H2O2 was 153.3 mg·L-1·h-1 with the low electric energy consumption of 15.3 kWh kg-1. Simultaneously, the NGA cathode had better charge transfer capability with N-doping, which was conducive to the conversion of Fe3+/Fe2+. Under the optimal condition, nearly 100% removal of p-nitrophenol and 84% removal of TOC were obtained within 60 and 120 min, respectively. The NGA cathode also presented good stability and versatile applicability in different water matrices. Therefore, the NGA is a cost-effective cathode material in electro-Fenton system with adequate activity and reuse stabilization.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Contaminantes Químicos del Agua / Grafito Idioma: En Revista: Environ Sci Pollut Res Int Asunto de la revista: SAUDE AMBIENTAL / TOXICOLOGIA Año: 2023 Tipo del documento: Article País de afiliación: China Pais de publicación: Alemania
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Contaminantes Químicos del Agua / Grafito Idioma: En Revista: Environ Sci Pollut Res Int Asunto de la revista: SAUDE AMBIENTAL / TOXICOLOGIA Año: 2023 Tipo del documento: Article País de afiliación: China Pais de publicación: Alemania