Nitrogen-rich metal-organic framework mediated Cu-N-C composite catalysts for the electrochemical re

• 作 者: Si-Min Cao Hua-Bo Chen Bao-Xia Dong Qiu-Hui Zheng Yan-Xia Ding Meng-Jie Liu She-Liang Qian Yun-Lei Teng Zong-Wei Li Wen-Long Liu
• 机 构: School of Chemistry and Chemical Engineering,Yangzhou University,Yangzhou 225002,Zhejiang,China
• 出 处: 能源化学
• 发表日期: 2021年3期
• 关键词: Carbon mono-oxide Formic acid Metal-organic framework Nitrogen-rich Copper nanop

Cu-based MOFs,i.e.,HKUST-1,etc.,have been pertinently chosen as the pristine materials for CO2ER due to the unique ability of copper for generation hydrocarbon fuel.However,the limited conductivity and stability become the stumbling-block that prevents the development of it.The exploring of MOFs-derived M-C materials starts a new chapter for the MOFs precursors,which provides a remarkable elec-tronic connection between carbon matrix and metals/metal oxides.N-doped M-N-C with extensive M-N sites scattering into the carbon matrix are more popular because of their impressive contribution to catalytic activity and specific product selectivity.Nevertheless,Cu-N-C system remained undeveloped up to now.The lack of ideal precursor,the sensitivity of Cu to be oxidized,and the difficulties in the syn-thesis of small size Cu nanoparticles are thus known as the main barriers to the development of Cu-N-C electrocatalysts.Herein,a nitrogen-rich Cu-BTT MOF is employed for the derivation of N-doped Cu-N-CT composite electrocatalysts by the pyrolyze method.High-temperature pyrolysis product of Cu-N-C1100 exhibits the best catalytic activity for productions of CO(-0.6 V vs.RHE,jco = 0.4 mA/cm2)and HCOOH(-0.9 V vs.RHE,jHCOOH = 1.4 mA/cm2).