Improving carbon coated TiO2 films with a TiCl4 treatment for photocatalytic water purification

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Odling, Gylen and Ivaturi, Aruna and Chatzisymeon, Efthalia and Robertson, Neil (2018) Improving carbon coated TiO2 films with a TiCl4 treatment for photocatalytic water purification. ChemCatChem, 10 (1). pp. 234-243. ISSN 1867-3880 (https://doi.org/10.1002/cctc.201700867)

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Abstract

Using a simple thermal decomposition route, carbon-TiO2 hybrid films have been synthesized from a catechol-TiO2 surface complex. The coated films display enhanced visible region absorption, owing to the thin (~2 nm) layer of carbon encapsulating the TiO2. While photocatalytically active under visible light alone, it is demonstrated that the activity of the carbon coated films can be improved further by a hydrolytic treatment with TiCl4, leading to the introduction of small TiO2 particles (5-10nm) and doping of chlorine into the structure. The combination of the carbon layer and TiCl4 treatment gives increased photocatalytic performance for the photodegradation of dyes, phenolic pollutants and the reduction of toxic Cr(VI) to relatively benign Cr(III). In addition, the carbon coated films show improved bactericidal activity under UV irradiation, and hence have been successfully tested against the most common types of pollutant present in potential drinking waters.

  • Item type:Article
    ID code:63120
    Dates:
    Date
    Event
    9 January 2018
    Published
    21 September 2017
    Published Online
    20 June 2017
    Accepted
    Subjects:Science > Chemistry
    Department:Faculty of Science > Pure and Applied Chemistry
    Depositing user: Pure Administrator
    Date deposited:31 Jan 2018 09:56
    Last modified:12 Dec 2024 05:44
    URI:https://strathprints.strath.ac.uk/id/eprint/63120
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