Underevaluated Solvent Effects in Electrocatalytic CO2 Reduction by FeIII Chloride Tetrakis(pentafluorophenyl)porphyrin

被引：25

作者：

Zhao, Bin ^{[1
]}

Lei, Haitao ^{[1
]}

Wang, Ni ^{[1
]}

Xu, Gelun ^{[1
]}

Zhang, Wei ^{[1
]}

Cao, Rui ^{[1
]}

机构：

[1] Shaanxi Normal Univ, Key Lab Appl Surface & Colloid Chem, Minist Educ, Sch Chem & Chem Engn, Xian 710119, Shaanxi, Peoples R China

来源：

CHEMISTRY-A EUROPEAN JOURNAL | 2020年 / 26卷 / 18期

基金：

中国国家自然科学基金;

关键词：

CO2; reduction; CO2-to-CO conversion; electrocatalysis; Fe porphyrin; solvent effect; CO2-TO-CO ELECTROCHEMICAL CONVERSION; MOLECULAR CATALYSIS; CARBON-DIOXIDE; ORGANIC FRAMEWORKS; OXYGEN REDUCTION; EFFICIENT; IRON; PROTON; PORPHYRIN; HYDROGEN;

D O I：

10.1002/chem.201903064

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Fe-III chloride tetrakis(pentafluorophenyl)porphyrin (1) is known to have poor electrocatalytic activity for the CO2-to-CO conversion in dimethylformamide. In this work, we re-examined Fe porphyrin 1 as a CO2 reduction catalyst in various solvents. Our results show that 1 displays fairly high electrocatalytic CO2-to-CO activity in acetonitrile with a turnover frequency (TOF) up to 4.2x10(4) s(-1). On the other hand, 1 shows a modest activity in propylene carbonate, and is inefficient to catalyze CO2 reduction in benzonitrile, dimethylformamide, and tetrahydrofuran. Several solvent effects were considered, but none of these effects alone can explain the observed large activity difference of 1 for CO2 reduction in these solvents. Based on the results, it is suggested that more care should be paid when comparing different CO2 reduction catalysts because solvent effects are significant and are underevaluated.

引用

页码：4007 / 4012

页数：6

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