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    Development of ZnO/PDMS nanocomposite with photocatalytic/hydrophobic multifunction

    Year: 2020

    Journal: Chem. Phys. Lett., Volume 740, FEB

    Authors: Santiago, A. A. G.; Gondim, J. G. S.; Tranquilin, R. L.; Silva, F. S.; Fernandez, F. F.; Costa, M. C. B.; Motta, F., V; Bomio, M. R. D.

    Organizations: National Council for Scientific and Technological Development - CNPqConselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPQ) [402127/2013-7]; Graduate Program in Materials Science and Engineering (PPGCEM-UFRN); Coordination for the Improvement of Higher Education Personnel - Brazil (CAPES)Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior (CAPES) [001]

    Keywords: ZnO; Polydimethylsiloxane (PDMS); Hydrophobic; Self-cleaning; Nanocomposite

    The polydimethylsiloxane (PDMS)/ZnO nanocomposite coatings were deposited on the borosilicate substrate by spray method. ZnO nanoparticles were synthesized by polyol method and further surface modification by functionalization with [(3-Aminopropyl)triethoxysilane] (APTS) in different concentrations (0.5, 1.0, and 1.5 ml). The results showed that there is an influence in the exposure to UV radiation and a decrease in the temperature, consequently presenting decreases in the contact angle of ZnO/PDMS nanocomposites. The 0.5 ml of APTS was the best design for ZnO/PDMS nanocomposite with photocatalytic and hydrophobic characteristics, showing a contact angle of 117 degrees and 25% of MB discoloration in 90 min.
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