Enhanced photocatalytic water splitting activity of carbon-modified TiO2 composite materials synthesized by a green synthetic approach

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dc.contributor.authorParayil, Sreenivasan Koliyat
dc.contributor.authorKibombo, Harrison S.
dc.contributor.authorWu, Chia-Ming
dc.contributor.authorPeng, Rui
dc.contributor.authorKoodali, Ranjit T.
dc.date.accessioned2023-02-23T09:34:04Z
dc.date.available2023-02-23T09:34:04Z
dc.date.issued2012
dc.description.abstractWe report a green and facile approach for the preparation of carbon-modified (C-modified) TiO2 composite materials by hydrothermal synthesis followed by pyrolytic treatment. The resultant materials were characterized by powder X-ray diffraction (XRD), nitrogen physisorption studies, Raman spectroscopy, X-ray photoelectron spectroscopy (XPS), diffuse reflectance spectroscopy (DRS), photoluminescence (PL) spectroscopy, and transmission electron microscopy (TEM). The photocatalytic performances of these materials were evaluated by calculating the amount of hydrogen evolved from the decomposition of water under solar simulated irradiation conditions. An improvement was achieved from no H2 evolution at all with the bare TiO2, to an evolution of 0.21mLg−1h−1 from a composite material modified with an optimum carbon loading of 3.62%. These results suggested that the interaction of carbon with predominantly rutile form of TiO2 can promote shallow trapping of photogenerated electrons in the oxygen vacancies. This phenomenon consequently enhances the photocatalytic activity by minimizing charge carrier recombination, a characteristic demonstrated by fluorescence quenching of the TiO2 emission.en_US
dc.identifier.citationParayil, S. K., Kibombo, H. S., Wu, C. M., Peng, R., Baltrusaitis, J., & Koodali, R. T. (2012). Enhanced photocatalytic water splitting activity of carbon-modified TiO2 composite materials synthesized by a green synthetic approach. International Journal of Hydrogen Energy, 37(10), 8257-8267.https://doi.org/10.1016/j.ijhydene.2012.02.067en_US
dc.identifier.issn0360-3199
dc.identifier.urihttps://nru.uncst.go.ug/handle/123456789/7957
dc.language.isoenen_US
dc.publisherInternational Journal of Hydrogen Energyen_US
dc.subjectSucroseen_US
dc.subjectPyrolysisen_US
dc.subjectCarbonizationen_US
dc.subjectPhotocatalysisen_US
dc.subjectHydrogen evolutionen_US
dc.titleEnhanced photocatalytic water splitting activity of carbon-modified TiO2 composite materials synthesized by a green synthetic approachen_US
dc.typeArticleen_US
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