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Photo-electrocatalytic H-2 evolution on poly(2,2 ‘-bithiophene) at neutral pH
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2014 (English)In: International journal of hydrogen energy, ISSN 0360-3199, E-ISSN 1879-3487, Vol. 39, no 32, 18230-18234 p.Article in journal (Refereed) Published
Abstract [en]

Vapour phase polymerised (VPP) polybithiophene (PBTh) on glassy carbon is revealed to be an efficient photo-electrocatalytic electrode for the hydrogen evolution reaction (HER). An onset potential of -0.03 V vs SCE for the HER is observed on illumination using visible light in 0.1 mol L-1 phosphate buffer at pH 6.9, 600 mV lower in energy than E-o. Hydrogen evolution is confirmed using gas chromatography with a calculated faradaic efficiency of 34% when holding at a potential of -0.5 V. Importantly, this process occurs without platinum and under neutral aqueous conditions thus revealing a significant but overlooked application for PBTh: a potential low-cost cathode material for the splitting of water. 

Place, publisher, year, edition, pages
2014. Vol. 39, no 32, 18230-18234 p.
Keyword [en]
Hydrogen, Photo-electrocatalyst, Conducting polymer, Renewable energy, Polythiophene
National Category
Materials Chemistry Polymer Chemistry
Identifiers
URN: urn:nbn:se:umu:diva-129111DOI: 10.1016/j.ijhydene.2014.09.003ISI: 000345804600007OAI: oai:DiVA.org:umu-129111DiVA: diva2:1058617
Available from: 2016-12-21 Created: 2016-12-21 Last updated: 2017-02-09Bibliographically approved

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Ohlin, C. Andre
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