能源化学(英文) ›› 2017, Vol. 26 ›› Issue (5): 825-829.DOI: 10.1016/j.jechem.2017.08.010

• Preface • 上一篇    下一篇

Nitrogen doped tin oxide nanostructured catalysts for selective electrochemical reduction of carbon dioxide to formate

Qiankun Lia, Zhuo Wanga, Miao Zhanga, Pengfei Houa,b, Peng Kanga,b,   

  1. a Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, 29 Zhongguancun East Road, Haidian District, Beijing 100190, China;
    b University of Chinese Academy of Sciences, 19 A Yuquan Road, Beijing 100049, China
  • 收稿日期:2017-07-28 修回日期:2017-08-25 出版日期:2017-09-15 发布日期:2017-11-10
  • 通讯作者: Peng Kang,E-mail address:pkang@mail.ipc.ac.cn
  • 基金资助:

    This work was financially supported by Key Research Program of the Chinese Academy of Sciences (ZDRW-ZS-2016-3), the National Key Research and Development Program of China (2016YFB0600901), and the Instrument Developing Project of the Chinese Academy of Sciences.

Nitrogen doped tin oxide nanostructured catalysts for selective electrochemical reduction of carbon dioxide to formate

Qiankun Lia, Zhuo Wanga, Miao Zhanga, Pengfei Houa,b, Peng Kanga,b,   

  1. a Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, 29 Zhongguancun East Road, Haidian District, Beijing 100190, China;
    b University of Chinese Academy of Sciences, 19 A Yuquan Road, Beijing 100049, China
  • Received:2017-07-28 Revised:2017-08-25 Online:2017-09-15 Published:2017-11-10
  • Contact: Peng Kang,E-mail address:pkang@mail.ipc.ac.cn
  • Supported by:

    This work was financially supported by Key Research Program of the Chinese Academy of Sciences (ZDRW-ZS-2016-3), the National Key Research and Development Program of China (2016YFB0600901), and the Instrument Developing Project of the Chinese Academy of Sciences.

摘要: Tin/tin oxide materials are key electrocatalysts for selective conversion of CO2 to formate/formic acid. Herein we report a tin oxide material with nitrogen doping by using ammonia treatment at elevated temperature. The N doped material demonstrated enhanced electrocatalytic CO2 reduction activity, showing high Faradaic efficiency (90%) for formate at -0.65 V vs. RHE with partial current density of 4 mA/cm2. The catalysis was contributed to increased electron negativity of N atom compared to O atom. Additionally, the N-doped catalyst demonstrates sulfur tolerance with retained formate selectivity. The analysis after electrolysis shows that the catalyst structure partially converts to metallic Sn, and thus the combined Sn/N-SnO2 is the key for the active CO2 catalysis.

关键词: CO2 reduction, Electrocatalysis, Formate, Tin oxide, Nitrogen doping

Abstract: Tin/tin oxide materials are key electrocatalysts for selective conversion of CO2 to formate/formic acid. Herein we report a tin oxide material with nitrogen doping by using ammonia treatment at elevated temperature. The N doped material demonstrated enhanced electrocatalytic CO2 reduction activity, showing high Faradaic efficiency (90%) for formate at -0.65 V vs. RHE with partial current density of 4 mA/cm2. The catalysis was contributed to increased electron negativity of N atom compared to O atom. Additionally, the N-doped catalyst demonstrates sulfur tolerance with retained formate selectivity. The analysis after electrolysis shows that the catalyst structure partially converts to metallic Sn, and thus the combined Sn/N-SnO2 is the key for the active CO2 catalysis.

Key words: CO2 reduction, Electrocatalysis, Formate, Tin oxide, Nitrogen doping