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    A hybrid sol-gel approach for novel photoactive and hydrophobic titania coatings on aluminium metal surfaces

    Year: 2013

    Journal: RSC ADVANCES, Vol. 3, p 18062-18070, 20150703

    Authors: Manjumol, K. A.; Mini, L.; Mohamed, A. Peer; Hareesh, U. S.; Warrier, K. G. K.

    Organizations: CSIR, Natl Inst Interdisciplinary Sci & Technol, Mat Sci & Technol Div, Trivandrum 695019, Kerala, India

    Photoactive and hydrophobic titanium dioxide-silica coatings on aluminium metal surfaces have been developed by dip-coating of a mixed sol-gel precursor of titanium isopropoxide (TIP) and methyl trimethoxysilane (MTMS). The coating composition of titania-0.5 wt% silica (T-S-0.5), annealed at 400 degrees C in air, effectively degraded 94% and 86% methylene blue after 3 h irradiation under UV and sunlight respectively. A water contact angle of 137 degrees was measured on coated surfaces.