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dc.contributor.authorOpoku, Francis
dc.contributor.authorVan Sittert, Cornelia Gertina Catharina Elizabeth
dc.contributor.authorGovender, Krishna Kuben
dc.contributor.authorGovender, Penny Poomani
dc.date.accessioned2018-06-19T05:59:43Z
dc.date.available2018-06-19T05:59:43Z
dc.date.issued2018
dc.identifier.citationOpoku, F. et al. 2018. Tuning the electronic structures, work functions, optical property and stability of bifunctional hybrid graphene oxide/V-doped NaNbO3 type-II heterostructures: a promising photocatalyst for H2 production. Carbon, 136:187-195. [https://doi.org/10.1016/j.carbon.2018.04.076]en_US
dc.identifier.issn0008-6223 (Online)
dc.identifier.urihttp://hdl.handle.net/10394/27667
dc.identifier.urihttps://doi.org/10.1016/j.carbon.2018.04.076
dc.identifier.urihttps://www.sciencedirect.com/science/article/pii/S0008622318304378
dc.description.abstractThe depleting sources of non–renewable fossil fuels and their adverse effect on the environment have driven the global interest to find an efficient and suitable material for hydrogen generation via a water splitting process. In this theoretical study, a bifunctional graphene oxide (GO)/V–doped NaNbO3(100) heterostructure photocatalyst having a high stability and activity is studied for the first time using hybrid density functional theory calculations. The suitable type–II heterojunction structure between NaNbO3(100) and GO sheet promoted the interfacial charge migration to restrain their recombination rate, thereby improving the activity of hydrogen generation. Moreover, the coupling GO sheet could offer conductive electron channels for the separation of electrons, hence further improve the photoresponse of NaNbO3. The GO/V–doped NaNbO3(100) heterostructure is a direct band gap semiconductor with a smaller effective mass compared with the pure NaNbO3, which shows that the heterostructure has a higher charge carrier mobility. Thus, the resulting bifunctional GO/V–doped NaNbO3(100) heterostructure is endowed with a suitable band alignment, narrow band gap, negatively charged O atoms on the NaNbO3(100) surface and enhanced separation of charge carriers. This study offers new insights and valuable outlook to development of GO–based photocatalyst with visible light activityen_US
dc.language.isoenen_US
dc.publisherElsevieren_US
dc.titleTuning the electronic structures, work functions, optical property and stability of bifunctional hybrid graphene oxide/V-doped NaNbO3 type-II heterostructures: a promising photocatalyst for H2 productionen_US
dc.typeArticleen_US
dc.contributor.researchID10073817 - Van Sittert, Cornelia Gertina Catharina E.


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