Surface pretreatment effect on the electrochemical reduction of CO2 on polycrystalline copper III aqueous hydrogen carbonate solution

A major obstacle that arises during the electroreduction of carbon dioxide in aqueous solution is the formation of inactive specie on the surface of electrode. The route that leads the formation of carbonate ions during the reduction of CO2 is minimized through surface electro-polarization of the el...

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Main Authors:	Jumat Salimon, Maher Kalaji
Format:	Article
Published:	Universiti Kebangsaan Malaysia 2002
Online Access:	http://journalarticle.ukm.my/3824/ http://journalarticle.ukm.my/3824/

id	ukm-3824
recordtype	eprints
spelling	ukm-38242012-05-04T04:09:11Z http://journalarticle.ukm.my/3824/ Surface pretreatment effect on the electrochemical reduction of CO2 on polycrystalline copper III aqueous hydrogen carbonate solution Jumat Salimon, Maher Kalaji, A major obstacle that arises during the electroreduction of carbon dioxide in aqueous solution is the formation of inactive specie on the surface of electrode. The route that leads the formation of carbonate ions during the reduction of CO2 is minimized through surface electro-polarization of the electrode. As the polarization potential is varied from -1.0 to 1.5 V (vs. SCE), an adsorbed carbon monoxide band that shifts from 1889 to 1920 cm-1 appeared, indicating that an adsorbed carbon monoxide is produced from the reduction of CO2, The band was not observed without surface prepolarization or in nitrogen-saturated solution. These results confirm that the "carbonate route" can be overcame and depressed during the electroreduction of CO2 in aqueous solution. Studies performed using other electrodes (Ni and Pt) show the same behaviour although in different potential ranges. Comparison with similar studies reported in recent literature suggests that the history of the electrode and pre-treatment are very critical. Universiti Kebangsaan Malaysia 2002 Article PeerReviewed Jumat Salimon, and Maher Kalaji, (2002) Surface pretreatment effect on the electrochemical reduction of CO2 on polycrystalline copper III aqueous hydrogen carbonate solution. Sains Malaysiana, 31 . pp. 73-85. ISSN 0126-6039 http://www.ukm.my/jsm/english_journals/vol31_2002/vol31_02page73-85.html
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Kebangasaan Malaysia
building	UKM Institutional Repository
collection	Online Access
description	A major obstacle that arises during the electroreduction of carbon dioxide in aqueous solution is the formation of inactive specie on the surface of electrode. The route that leads the formation of carbonate ions during the reduction of CO2 is minimized through surface electro-polarization of the electrode. As the polarization potential is varied from -1.0 to 1.5 V (vs. SCE), an adsorbed carbon monoxide band that shifts from 1889 to 1920 cm-1 appeared, indicating that an adsorbed carbon monoxide is produced from the reduction of CO2, The band was not observed without surface prepolarization or in nitrogen-saturated solution. These results confirm that the "carbonate route" can be overcame and depressed during the electroreduction of CO2 in aqueous solution. Studies performed using other electrodes (Ni and Pt) show the same behaviour although in different potential ranges. Comparison with similar studies reported in recent literature suggests that the history of the electrode and pre-treatment are very critical.
format	Article
author	Jumat Salimon, Maher Kalaji,
spellingShingle	Jumat Salimon, Maher Kalaji, Surface pretreatment effect on the electrochemical reduction of CO2 on polycrystalline copper III aqueous hydrogen carbonate solution
author_facet	Jumat Salimon, Maher Kalaji,
author_sort	Jumat Salimon,
title	Surface pretreatment effect on the electrochemical reduction of CO2 on polycrystalline copper III aqueous hydrogen carbonate solution
title_short	Surface pretreatment effect on the electrochemical reduction of CO2 on polycrystalline copper III aqueous hydrogen carbonate solution
title_full	Surface pretreatment effect on the electrochemical reduction of CO2 on polycrystalline copper III aqueous hydrogen carbonate solution
title_fullStr	Surface pretreatment effect on the electrochemical reduction of CO2 on polycrystalline copper III aqueous hydrogen carbonate solution
title_full_unstemmed	Surface pretreatment effect on the electrochemical reduction of CO2 on polycrystalline copper III aqueous hydrogen carbonate solution
title_sort	surface pretreatment effect on the electrochemical reduction of co2 on polycrystalline copper iii aqueous hydrogen carbonate solution
publisher	Universiti Kebangsaan Malaysia
publishDate	2002
url	http://journalarticle.ukm.my/3824/ http://journalarticle.ukm.my/3824/
first_indexed	2023-09-18T19:39:52Z
last_indexed	2023-09-18T19:39:52Z
_version_	1777405518069891072

Surface pretreatment effect on the electrochemical reduction of CO2 on polycrystalline copper III aqueous hydrogen carbonate solution

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