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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://www.ukm.my/jsm/english_journals/vol31_2002/vol31_02page73-85.html
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spelling my-ukm.journal.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
institution Universiti Kebangsaan Malaysia
building Perpustakaan Tun Sri Lanang Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Kebangsaan Malaysia
content_source UKM Journal Article Repository
url_provider http://journalarticle.ukm.my/
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://www.ukm.my/jsm/english_journals/vol31_2002/vol31_02page73-85.html
_version_ 1643735862739992576
score 13.211869

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