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Exploration and optimisation of poly(2,2 ‘-bithiophene) as a stable photo-electrocatalyst for hydrogen production
2015 (English)In: Journal of Materials Chemistry A, ISSN 2050-7488, Vol. 3, no 21, 11358-11366 p.Article in journal (Refereed) Published
Abstract [en]

An organic photo-electrochemical catalyst for the hydrogen evolution reaction (HER) based on the conducting polymer, poly(2,2 ‘-bithiophene) (PBTh), is further explored. Long-term stability testing shows the successful operation of the catalyst over a period of 12 days at neutral pH with corresponding turnover numbers exceeding 6 x 10(4). Experimental parameters such as substrate type, electrolyte, pH and thickness of the film are explored and their subsequent effects on catalytic behaviour and performance discussed. Significant findings include the four-fold increase in performance by the reduction of thickness to better facilitate charge transfer and the successful photo-catalysis of the HER at pH 11, with an onset that is 0.14 V below E-0. Faradaic efficiency was also determined with a maximum recorded efficiency of 80% despite known losses such as crossover reactions and H-2 escape from within the system.

Place, publisher, year, edition, pages
2015. Vol. 3, no 21, 11358-11366 p.
National Category
Materials Chemistry Polymer Chemistry
Identifiers
URN: urn:nbn:se:umu:diva-129110DOI: 10.1039/c5ta00291eISI: 000354952500024OAI: oai:DiVA.org:umu-129110DiVA: diva2:1058613
Available from: 2016-12-21 Created: 2016-12-21 Last updated: 2017-02-08Bibliographically approved

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Ohlin, C. Andre
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