Solution mixing preparation of PVDF/ZnO polymeric composite films engineered for heterogeneous photocatalysis |
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Authors: | Crissie Dossin Zanrosso Diego Piazza Marla Azário Lansarin |
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Affiliation: | 1. Department of Chemical Engineering, Federal University of Rio Grande do Sul, 90035-007 Porto Alegre, RS, Brazil;2. Polymer Laboratory, University of Caxias do Sul, 95070-560 Caxias do Sul, RS, Brazil |
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Abstract: | Despite the efforts of the scientific community, carrying out photocatalyst immobilization so that industrial application of photocatalysis becomes economically feasible is still a challenge to be overcome. In this work, polyvinylidene fluoride (PVDF)/ZnO composites were prepared by solution mixing based on solid knowledge of membrane technology and with the help of a powerful experimental design for systematic evaluation of the interaction among variables. A strategy for variable screening was used, followed by a complete evaluation at two levels, leading to predictive models. As a result, photocatalyst amount, pore agent concentration, and wet thickness were the most significant in the target molecule discoloration. With this, it was possible to obtain a 40 and 186% enhancement in photocatalytic efficiency compared to previous results and simple photolysis, respectively. Finally, the samples were characterized by FTIR-ATR, XRD, and SEM and chemical, crystalline and morphological differences were observed both with nanoparticle and pore agent incorporation. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2020 , 137, 48417. |
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Keywords: | catalysts composites nanoparticles nanowires and nanocrystals separation techniques X-ray |
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