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Electrochemical analysis of iron-porphyrin-catalyzed CO2 reduction under photoirradiation

Paper ID Volume ID Publish Year Pages File Format Full-Text
26476 43954 2015 6 PDF Available
Title
Electrochemical analysis of iron-porphyrin-catalyzed CO2 reduction under photoirradiation
Abstract

•We report the electrochemical analysis of a catalytic system under photoirradiation.•CO2 reduction reaction by iron porphyrin catalyst was selected as a target system.•The use of thin layer cyclic voltammetry enabled us to analyze the photoreaction.•A clear difference in the voltammograms was observed with/without photoirradiation.•The results indicate the Fe–CO reassociation is hindered under photoirradiation.

In this study, the photochemical reaction of a metal-complex-based catalyst was analyzed by electrochemical measurements. A well-known catalyst for the CO2 reduction reaction, meso-tetraphenylporphyrin iron(III) chloride (Fe(tpp)Cl), was selected as the target analyte. Although the analysis of the electrochemical response of Fe(tpp)Cl under photoirradiation with conventional cyclic voltammetry (CV) was not allowed, the adaptation of thin layer cyclic voltammetry (TLCV) enabled us to detect the photochemical reaction of Fe(tpp)Cl. The influence of photoirradiation on the electrochemical property of Fe(tpp)Cl was investigated both under Ar and CO2 atmospheres. Although the thin layer cyclic voltammograms of Fe(tpp)Cl upon photoirradiation under an Ar atmosphere were almost the same as those measured in the dark, the measurements under a CO2 atmosphere clearly indicated the change of the electrochemical response upon photoirradiation. The detailed analysis of this phenomenon revealed that the photoinduced decarbonylation reaction regenerates the original [FeII(tpp)] complex under photoirradiation.

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Keywords
Electrochemistry; CO2 reduction; Iron porphyrin
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Electrochemical analysis of iron-porphyrin-catalyzed CO2 reduction under photoirradiation
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Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 313, 1 December 2015, Pages 143–148
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us