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N-Coordinated Cu-Ni Dual-Single-Atom Catalyst for Highly Selective Electrocatalytic Reduction of Nitrate to Ammonia.
Wang, Yunlong; Yin, Haibo; Dong, Feng; Zhao, Xiaoguang; Qu, Yakun; Wang, Lixin; Peng, Yue; Wang, Dingsheng; Fang, Wei; Li, Junhua.
Afiliación
  • Wang Y; State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing, 100084, P. R. China.
  • Yin H; Sinopec Research Institute of Petroleum Processing Co., Ltd, Beijing, 100083, P. R. China.
  • Dong F; State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing, 100084, P. R. China.
  • Zhao X; Department of Chemistry, Tsinghua University, Beijing, 100084, P. R. China.
  • Qu Y; Sinopec Research Institute of Petroleum Processing Co., Ltd, Beijing, 100083, P. R. China.
  • Wang L; Sinopec Research Institute of Petroleum Processing Co., Ltd, Beijing, 100083, P. R. China.
  • Peng Y; Sinopec Research Institute of Petroleum Processing Co., Ltd, Beijing, 100083, P. R. China.
  • Wang D; State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing, 100084, P. R. China.
  • Fang W; Department of Chemistry, Tsinghua University, Beijing, 100084, P. R. China.
  • Li J; Sinopec Research Institute of Petroleum Processing Co., Ltd, Beijing, 100083, P. R. China.
Small ; 19(20): e2207695, 2023 May.
Article en En | MEDLINE | ID: mdl-36793161
As a traditional method of ammonia (NH3 ) synthesis, Haber-Bosch method expends a vast amount of energy. An alternative route for NH3 synthesis is proposed from nitrate (NO3 - ) via electrocatalysis. However, the structure-activity relationship remains challenging and requires in-depth research both experimentally and theoretically. Here an N-coordinated Cu-Ni dual-single-atom catalyst anchored in N-doped carbon (Cu/Ni-NC) is reported, which has competitive activity with a maximal NH3 Faradaic efficiency of 97.28%. Detailed characterizations demonstrate that the high activity of Cu/Ni-NC mainly comes from the contribution of Cu-Ni dual active sites. That is, (1) the electron transfer (Ni â†’ Cu) reveals the strong electron interaction of Cu-Ni dual-single-atom; (2) the strong hybridizations of Cu 3d-and Ni 3d-O 2p orbitals of NO3 - can accelerate electron transfer from Cu-Ni dual-site to NO3 - ; (3) Cu/Ni-NC can effectively decrease the rate-limiting step barriers, suppress N-N coupling for N2 O and N2 formation and hydrogen production.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Small Asunto de la revista: ENGENHARIA BIOMEDICA Año: 2023 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: Small Asunto de la revista: ENGENHARIA BIOMEDICA Año: 2023 Tipo del documento: Article Pais de publicación: Alemania