DOI: 10.1016/j.jcou.2016.09.004
Scopus记录号: 2-s2.0-84988728256
论文题名: [ReCl(CO)3(phen-dione)] as a homogeneous and heterogeneous electrocatalyst for the reduction of carbon dioxide
作者: Rezaei B. ; Mokhtarianpour M. ; Hadadzadeh H. ; Ensafi A.A. ; Shakeri J.
刊名: Journal of CO2 Utilization
ISSN: 22129820
出版年: 2016
卷: 16 起始页码: 354
结束页码: 360
语种: 英语
英文关键词: Carbon dioxide
; Heterogeneous catalyst
; Homogeneous catalyst
; Rhenium(I) complex
Scopus关键词: Catalyst activity
; Catalysts
; Electrocatalysts
; Electrodes
; Graphite electrodes
; Multiwalled carbon nanotubes (MWCN)
; Rhenium compounds
; Yarn
; Acetonitrile solutions
; Cathodic current density
; Heterogeneous catalyst
; Heterogeneous reduction
; Homogeneous catalyst
; Homogeneous system
; Pencil graphite electrode
; Rhenium complexes
; Carbon dioxide
英文摘要: A mononuclear Re(I) complex, [ReCl(CO)3(phen-dione)], was investigated as a new electrocatalyst for the reduction of CO2 in two catalytic systems (homogeneous and heterogeneous) by voltammetry experiments. A modified pencil graphite electrode with carboxylated multiwall carbon nanotubes (CMWCNTs-PGE) was used as a working electrode for both catalytic systems. In the homogeneous system, the Re(I) complex revealed the catalytic activity for the reduction of CO2 to CO in an acetonitrile solution at the onset potential of -545 mV vs. NHE. Also, the results showed that the presence of methanol as a weak Bronsted acid enhanced the rate of the catalytic process for the reduction of CO2 in the homogenous condition. In the heterogonous condition, the Re(I) complex was simply casted on the CMWCNTs-PGE and then investigated for the reduction of CO2 in an acidic solution of MeOH. The results also revealed that the onset potential for the heterogeneous catalyst was more positive than the homogenous condition. Also, the cathodic current density for the heterogeneous catalyst was higher in an acidic solution of MeOH. Adding sulfuric acid shifted the onset potential about 477 mV toward the more positive potential (at the onset potential of -390 mV vs. NHE) and increased the cathodic current about 10.7 times in the heterogeneous reduction of CO2. © 2016 Elsevier Ltd. All rights reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/52835
Appears in Collections: 影响、适应和脆弱性
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Recommended Citation:
Rezaei B.,Mokhtarianpour M.,Hadadzadeh H.,et al. [ReCl(CO)3(phen-dione)] as a homogeneous and heterogeneous electrocatalyst for the reduction of carbon dioxide[J]. Journal of CO2 Utilization,2016-01-01,16