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Photocatalytic activity of electrophoretically deposited (EPD) TiO2 coatings


Reference:

Nuño, M., Ball, R. J., Bowen, C. R., Kurchania, R. and Sharma, G. D., 2015. Photocatalytic activity of electrophoretically deposited (EPD) TiO2 coatings. Journal of Materials Science, 50 (14), pp. 4822-4835.

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    Official URL:

    http://dx.doi.org/10.1007/s10853-015-9022-0

    Abstract

    This paper describes the application of electrophoretic deposition for air pollution removal using anatase as a photoactive coating. In this study the anatase form of TiO2 has been applied to (i) fluorine-doped tin oxide coated glass; (ii) 304L stainless steel; and (iii) titanium substrates using isopropanol and acetylacetone based solutions at 20, 40, 60 and 80V. In order to increase the strength of the substrate-anatase interface without transforming the phase into rutile, samples were calcined at 450ºC for 2 hours. The resulting coatings were characterised by Raman spectroscopy, X-ray diffraction (XRD), non-contact optical profilometry and scanning electron microscopy (SEM). The photocatalytic activity of the deposited coatings were evaluated in the gas-phase for nitrogen dioxide (NO2) removal by electron ionisation mass spectrometry whilst irradiated by light of wavelength 376-387nm for 100 minutes. Anatase phase titania supported on a fluorine-doped tin oxide coated glass substrate showed the highest photoactivity for NO2 remediation. This was attributed to the formation of a three-dimensional nanostructure with properties determined by the deposition conditions. The work provides routes for the development of low-cost and large area photoactive coatings for pollution control.

    Details

    Item Type Articles
    CreatorsNuño, M., Ball, R. J., Bowen, C. R., Kurchania, R. and Sharma, G. D.
    DOI10.1007/s10853-015-9022-0
    Uncontrolled Keywordselectrophoretic deposition,photocatalysis,tio2,anatase,no2,mass quadrupole
    DepartmentsFaculty of Engineering & Design > Architecture & Civil Engineering
    Faculty of Engineering & Design > Mechanical Engineering
    Research CentresBRE Centre in Innovative Construction Materials
    Materials Research Centre
    Centre for Advanced Sensor Technologies (CAST)
    EPSRC Centre for Doctoral Training in Statistical Mathematics (SAMBa)
    Publisher Statement2015_Nuno_J_Mat_Sci.pdf: The final publication is available at Springer via 10.1007/s10853-015-9022-0
    RefereedYes
    StatusPublished
    ID Code46140

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