Highly efficient electroconversion of carbon dioxide into hydrocarbons by cathodized copper-organic frameworks

被引：101

作者：

Yang, Fan ^{[1
]}

Chen, Aling ^{[1
]}

Deng, Pei Lin ^{[1
]}

Zhou, Yinzheng ^{[1
]}

Shahid, Zaman ^{[1
]}

Liu, Hongfang ^{[1
]}

Xia, Bao Yu ^{[1
]}

机构：

[1] Huazhong Univ Sci & Technol, Key Lab Mat Chem Energy Convers & Storage, Key Lab Mat Chem & Serv Failure,Minist Educ, Sch Chem & Chem Engn,Wuhan Natl Lab Optoelect, 1037 Luoyu Rd, Wuhan 430074, Peoples R China

来源：

CHEMICAL SCIENCE | 2019年 / 10卷 / 34期

基金：

中国国家自然科学基金;

关键词：

ELECTROCHEMICAL CO2 REDUCTION; ELECTROREDUCTION; SURFACE; ELECTROCATALYSTS; SELECTIVITY; CONVERSION; NANOSHEETS; CATALYSIS; INSIGHTS; CHAIN;

D O I：

10.1039/c9sc02605c

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Highly selective conversion of carbon dioxide (CO2) into valuable hydrocarbons is promising yet challenging in developing effective electrocatalysts. Herein, Cu-II/adeninato/carboxylato metal-biomolecule frameworks (Cu-II/ade-MOFs) are employed for efficient CO2 electro-conversion towards hydrocarbon generation. The cathodized Cu-II/ade-MOF nanosheets demonstrate excellent catalytic performance for CO2 conversion into valuable hydrocarbons with a total hydrocarbon faradaic efficiency (FE) of over 73%. Ethylene (C2H4) is produced with a maximum FE of 45% and a current density of 8.5 mA cm(-2) at -1.4 V vs. RHE, while methane (CH4) is produced with a FE of 50% and current density of similar to 15 mA cm(-2) at -1.6 V vs. RHE. These investigations reveal that the reconstruction of cathodized Cu-II/ade-MOFs and the formed Cu nanoparticles functionalized by nitrogen-containing ligands contribute to the excellent CO2 conversion performance. Furthermore, this work would provide valuable insights and opportunities for the rational design of Cu-based MOF catalysts for highly efficient conversion of CO2 towards hydrocarbon generation.

引用

页码：7975 / 7981

页数：7

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