Your browser doesn't support javascript.
loading
Construction of dual sites on FeS2 surface for enhanced electrocatalytic reduction of nitrite to ammonia.
Li, Heying; Song, Xueshi; Zhang, Nana; Chu, Ke; Zhao, Jingxiang.
Afiliação
  • Li H; Key Laboratory of Photonic and Electronic Bandgap Materials, Ministry of Education, Harbin Normal University, Harbin 150025, China.
  • Song X; Key Laboratory of Photonic and Electronic Bandgap Materials, Ministry of Education, Harbin Normal University, Harbin 150025, China.
  • Zhang N; School of Materials Science and Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China.
  • Chu K; School of Materials Science and Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China. Electronic address: chuk630@mail.lzjtu.cn.
  • Zhao J; Key Laboratory of Photonic and Electronic Bandgap Materials, Ministry of Education, Harbin Normal University, Harbin 150025, China. Electronic address: zhaojingxiang@hrbnu.edu.cn.
J Colloid Interface Sci ; 678(Pt C): 242-250, 2024 Sep 14.
Article em En | MEDLINE | ID: mdl-39298975
ABSTRACT
Cost-effective iron sulfides (FeS2) hold great potential as high-performance catalysts for NO2- electroreduction to NH3 (NO2ER), which is hindered by the weak NO2 activation. Herein, the design of nonmetal-doped FeS2 electrocatalysts was initially conducted by density functional theory (DFT) computations. We found that doping with different nonmetal atoms effectively not only regulates the electronic structures of the d-electrons of Fe atoms but also creates the unique p-d hybridized dual active sites, thereby boosting the efficient NO2 activation. Owing to the optimal NO2 adsorption strength, N-doped FeS2 demonstrates a low limiting potential for the NO2--to-NH3 conversion, thus significantly improving NO2ER activity. Direct experimental evidence was provided afterward an NH3 yield rate of 424.5 µmol/hcm-2 with a 92.4 % Faradaic efficiency was achieved. Our findings not only suggest a promising NO2ER catalyst through theoretical computations to guide experiments but also provide a comprehensive understanding of the structure-properties relationship.
Palavras-chave
Texto completo
Adicionar na Minha BVS
Imprimir
XML
PubMed Links
Buscar no Google

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: J Colloid Interface Sci Ano de publicação: 2024 Tipo de documento: Article País de afiliação: China País de publicação: Estados Unidos
Texto completo
Adicionar na Minha BVS
Imprimir
XML
PubMed Links
Buscar no Google

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: J Colloid Interface Sci Ano de publicação: 2024 Tipo de documento: Article País de afiliação: China País de publicação: Estados Unidos