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Type: Artigo
Title: Use Of Natural Rubber Membranes As Support For Powder Tio2 And Ag/tio2 Photocatalysts
Author: Stropa
Jusinei M.; Herrero
Aline S.; Oliveira
Silvio C.; Cavalheiro
Alberto A.; Dantas
Renato F.; Oliveira
Samuel L.; Machulek
Jr.; Oliveira
Lincoln C. S.
Abstract: The purpose of this study was to synthesize TiO2-polymer composites able to act as photocatalyst membranes. TiO2 catalysts were prepared using the sol-gel method to contain 0.0, 0.5, 1.0, and 2.0 wt.% of embedded Ag particles, subsequently incorporated into natural rubber latex at a weight fraction of 15%. Samples of these ceramic powders were suspended in a latex emulsion (natural rubber), cast in Petri dishes and slowly dried in an oven. The resulting materials were evaluated by X-ray diffraction, scanning electron microscopy, energy-dispersive X-ray, diffuse reflectance spectroscopy, differential scanning calorimetry, thermogravimetry, and photocatalytic assaying using methylene blue as an organic pollutant reference. All composite membranes exhibited good photoactivity conferred by TiO2 powder, with 98% dye fading after 300 min of ultraviolet irradiation.
Subject: Titanium Dioxide
Natural Rubber
Heterogeneous Photocatalysis
Editor: Soc Brasileira Quimica
São Paulo
Citation: Journal Of The Brazilian Chemical Society. Soc Brasileira Quimica, v. 27, p. 575 - 583, 2016.
Rights: aberto
Identifier DOI: 10.5935/0103-5053.20150293
Date Issue: 2016
Appears in Collections:Unicamp - Artigos e Outros Documentos

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