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dc.contributor.authorIqbal, M.Z.
dc.contributor.authorKriek, R.J.
dc.contributor.authorCarleschi, E.
dc.contributor.authorDoyle, B.P.
dc.date.accessioned2020-02-07T13:04:17Z
dc.date.available2020-02-07T13:04:17Z
dc.date.issued2019
dc.identifier.citationIqbal, M.Z. et al. 2019. Photocharged water splitting employing a Nickel(II) Tellurium Oxide (Photo)anode in alkaline medium. ACS applied energy materials, 2(11):8125-8137. [https://doi.org/10.1021/acsaem.9b01597]en_US
dc.identifier.issn2574-0962
dc.identifier.urihttp://hdl.handle.net/10394/34049
dc.identifier.urihttps://pubs.acs.org/doi/10.1021/acsaem.9b01597
dc.identifier.urihttps://pubs.acs.org/doi/10.1021/acsaem.9b01597
dc.description.abstractNickel-based oxides and (oxy)hydroxides are known to be electrocatalytically active for the oxygen evolution reaction (OER) in an alkaline medium. However, the aforementioned materials would be more auspicious, especially for photoelectrocatalysis, if their optical properties fell within the range of the solar spectrum. These properties could be attained by either doping or by creating a specific crystal structure. In this study nickel(II) tellurium oxide was synthesized by employing the Pechini sol–gel synthesis route and calcined at 400 °C (NTO-400), 600 °C (NTO-600), and 800 °C (NTO-800). It was physically characterized and (photo)electrochemically tested for the OER in alkaline medium. Under electrocatalytic (EC) conditions, NTO-600 displayed the lowest overpotential, 353 mV, to drive a current density of 10 mA cm–2 and exhibited the lowest charge transfer resistance of 20.75 Ω. Under photoelectrocatalytic (PEC) conditions, NTO-600 (with a bandgap of 2.50 eV) realized a current density increase of 55% compared to pure EC conditions. Remarkably, this current density gain is (to a greater extent) maintained, subsequent to the termination of illumination, which points to photocharging of the material and the subsequent utilization of the stored charge to drive the OER (in the dark). Solar energy conversion, storage, and subsequent utilization is therefore realized through the use of nickel(II) tellurium oxideen_US
dc.language.isoenen_US
dc.publisherACSen_US
dc.subjectNickel tellurium oxideen_US
dc.subjectPechini sol-gel routeen_US
dc.subjectPhotoelectrocatalysten_US
dc.subjectOxygen evolution reactionen_US
dc.subjectPhotochargingen_US
dc.titlePhotocharged water splitting employing a Nickel(II) Tellurium Oxide (Photo)anode in alkaline mediumen_US
dc.typeArticleen_US
dc.contributor.researchID13238477 - Kriek, Roelof Jacobus
dc.contributor.researchID29374553 - Iqbal, M.Z.


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