Nanostructured hematite thin films for photoelectrochemical water splitting

Show simple item record Maabong, Kelebogile Machatine, Augusto Gonçalo Jose Mwankemwa, Benard S. Braun, Artur Bora, Debajeet Kumar Toth, Rita Diale, M. (Mmantsae Moche) 2018-10-30T04:44:48Z 2018-04
dc.description.abstract Nanostructured hematite thin films prepared by dip coating technique were investigated for their photoelectrochemical activity for generation of hydrogen from water splitting. Structural, morphological and optical analyses of the doped/undoped films were performed by X-ray diffraction, high resolution field emission-scanning electron microscopy, UV–vis spectrophotometry and Raman spectroscopy. The photoelectrochemical measurements of the films showed enhanced photoresponse and cathodic shift of the onset potential upon Ti doping indicating improved transfer of photoholes at the semiconductor-electrolyte interface. Films doped with 1 at% Ti produced 0.72 mA/cm2 at 1.23 V vs RHE which is 2 times higher than current density for the pure film (0.30 mA/cm2, at 1.23 V vs RHE). Gas chromatography analysis of the films also showed enhanced hydrogen evolution at 1 at% Ti with respect to pure film. en_ZA
dc.description.department Physics en_ZA
dc.description.embargo 2019-04-15
dc.description.librarian hj2018 en_ZA
dc.description.sponsorship The results of this work was supported by the Swiss-South African Joint Research (SSAJR) Project IZLSZ2-149031; the Swizz SNF Grant R′Equip 206021-121306 and National Research Foundation of South Africa (NRF) (UID/Project number: 87401). K.M acknowledges University of Botswana for financial support. en_ZA
dc.description.uri en_ZA
dc.identifier.citation Maabong, K., Machatine, A.G.J., Mwankemwa, B.S. et al. 2018, 'Nanostructured hematite thin films for photoelectrochemical water splitting', Physica B : Condensed Matter, vol. 535, pp. 67-71. en_ZA
dc.identifier.issn 0921-4526 (print)
dc.identifier.issn 1873-2135 (online)
dc.identifier.other 10.1016/j.physb.2017.06.054
dc.language.iso en en_ZA
dc.publisher Elsevier en_ZA
dc.rights © 2017 Published by Elsevier B.V. Notice : this is the author’s version of a work that was accepted for publication in Physica B: Consensed Matter. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. A definitive version was subsequently published in Physica B: Consensed Matter, vol. 535, pp. 67-71, 2018. doi : 10.1016/j.physb.2017.06.054. en_ZA
dc.subject Hematite en_ZA
dc.subject Thin films en_ZA
dc.subject Dip coating en_ZA
dc.subject Ti-doping en_ZA
dc.subject Gas chromatography en_ZA
dc.subject Photoelectrochemical (PEC) en_ZA
dc.subject Nanostructured hematite thin films en_ZA
dc.subject Water splitting en_ZA
dc.title Nanostructured hematite thin films for photoelectrochemical water splitting en_ZA
dc.type Postprint Article en_ZA

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