| 氮化铌电催化还原CO2 |
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| 引用本文： | 李文廷,侯朋飞,康鹏.氮化铌电催化还原CO2[J].影像科学与光化学,2019,37(2):107-117. |
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| 作者姓名： | 李文廷 侯朋飞 康鹏 |
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| 作者单位： | 中国科学院理化技术研究所光化学转换与功能材料重点实验室,北京100190;中国科学院大学,北京100049;中国科学院理化技术研究所光化学转换与功能材料重点实验室,北京100190;天津大学化学院,天津300350;中国科学院大学,北京100049 |
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| 基金项目： | 国家基础研究开发重点项目（2016YFB0600901） |
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| 摘 要： | 通过电化学的方法将CO2转化为CO是解决资源和环境问题的经济友好的策略。在本次工作中，利用湿化学方法制备了铌/碳的前驱体，在NH3和Ar氛围下煅烧后分别转化为Nb4N5/C和Nb2O5/C。当氮化温度达到700℃时，制备的Nb4N5/C表现出优异的催化活性，在CO2饱和的0.5 mol·L-1的NaCl溶液中，电解电位为-0.83V（RHE）时，CO的法拉第效率最高，达到57%。实验结果表明，Nb4N5/C的催化活性与Nb4N5中的N掺杂有关。
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| 关 键 词： | 氮化铌 电催化 CO2还原 CO |
| 收稿时间： | 2018-12-26 |
Niobium Nitride Catalyst for Electrocatalytic Reduction of CO_2 |
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| LI Wenting,HOU Pengfei,KANG Peng.Niobium Nitride Catalyst for Electrocatalytic Reduction of CO_2[J].Imaging Science and Photochemistry,2019,37(2):107-117. |
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| Authors: | LI Wenting HOU Pengfei KANG Peng |
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| Institution: | 1. Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China;
2. School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, P. R. China;
3. University of Chinese Academy of Sciences, Beijing 100049, P. R. China |
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| Abstract: | Converting CO2 to CO by electrochemical method is considered as an economic and friendly strategy to solve problems of resource and environment. In this work, precursor of niobium/carbon was prepared by wet chemical method and converted into Nb4N5/C and Nb2O5/C after calcination under NH3 and Ar respectively. When the nitriding temperature reaches to 700℃, prepared Nb4N5/C exhibits excellent catalytic activity with CO Faradaic efficiency of 57% at -0.83 V vs RHE in CO2 saturated 0.5 mol·L-1 NaCl solution. The results show that the catalytic activity of Nb4N5/C is related to the N doping in Nb4N5. |
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| Keywords: | niobium nitride electrocatalysis CO2 reduction CO |
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