Erbium and titanium co-doped hematite nanorods : structural, optical, and catalytic properties for enhanced water splitting

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dc.contributor.author Talibawo, Joan
dc.contributor.author Kyesmen, Pannan Isa
dc.contributor.author Cyulinyana, Marie C.
dc.contributor.author Diale, M. (Mmantsae Moche)
dc.date.accessioned 2024-09-12T10:22:04Z
dc.date.available 2024-09-12T10:22:04Z
dc.date.issued 2023-05
dc.description DATA AVAILABILITY STATEMENT : The data that support the findings of this study are available from the corresponding author upon reasonable request. en_US
dc.description.abstract Herein, hydrothermally synthesized hematite nanorods (NRs) co-doped with erbium and titanium, using titanium tetrachloride and erbium(III) nitrate pentahydrate as the dopant sources, are presented. The effect of varied volumes of the erbium/titanium surface co-dopants on the morphology, structural, optical, and photoelectrochemical (PEC) properties of hematite NRs is investigated. The pristine hematite, 40 μL-Er, and 40 μL-Er/20 μL-Ti-doped NRs samples present a similar surface morphology of vertically aligned NRs. The NRs are randomly oriented with an increase in titanium dopant for the 40 μL-Er/30 μL-Ti-doped NRs and later coalesced for the 40 μL-Er/40 μL-Ti-doped NRs. The structural analysis based on X-ray diffraction and Raman analysis present a uniform, pure hematite phase for all the prepared NRs. The samples exhibit high photon absorbance with peaks in the 400–450 nm wavelength range of the visible spectrum. The 40 μL-Er/40 μL-Ti-doped NRs sample present the highest photocurrent density of 83.9 μA cm 2 at 1.4 V vs reversible hydrogen electrode (RHE) and is attributed to the lowest flat band potential ( 0.76 V vs RHE) that enhances charge mobility at the electrode–electrolyte interface. These results reveal the facile erbium/titanium doping of hematite NRs as a viable strategy for enhancing their PEC water-splitting performance. en_US
dc.description.department Physics en_US
dc.description.librarian am2024 en_US
dc.description.sdg None en_US
dc.description.sponsorship The African Centre of Excellence in Energy and Sustainable Development at the University of Rwanda, Department of Physics-University of Pretoria, The National Research Foundation, The Organization for Women in Science for the Developing World (OWSD), and Swedish International Development Cooperation Agency (SIDA). en_US
dc.description.uri https://onlinelibrary.wiley.com/journal/18626319 en_US
dc.identifier.citation Talibawo, J., Kyesmen, P.I., Cyulinyana, M.C. et al. 2023, 'Erbium and titanium co-doped hematite nanorods : structural, optical, and catalytic properties for enhanced water splitting', Phys. Status Solidi A, vol. 220, art. 2200778, pp. 1-10. DOI: 10.1002/pssa.202200778. en_US
dc.identifier.issn 1862-6300 (print)
dc.identifier.issn 1862-6319 (online)
dc.identifier.other 10.1002/pssa.202200778
dc.identifier.uri http://hdl.handle.net/2263/98154
dc.language.iso en en_US
dc.publisher Wiley en_US
dc.rights © 2023 The Authors. This is an open access article under the terms of the Creative Commons Attribution-NonCommercial- NoDerivs License. en_US
dc.subject Erbium/titanium co-doped en_US
dc.subject Hematite nanorods en_US
dc.subject Photocatalyst en_US
dc.subject Photoelectrochemical water oxidation en_US
dc.title Erbium and titanium co-doped hematite nanorods : structural, optical, and catalytic properties for enhanced water splitting en_US
dc.type Article en_US


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