Cotton fabric-based facile solar photocatalytic purification of simulated real dye wastes
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For the first time, this study presents solar photocatalytic processing of the real dye wastes remaining after finishing polyester/cotton (P/C) blends, rather than a pure organic dye solution as widely reported. A commonly used microencapsulation-based one-bath dyeing is investigated systematically, in order to simulate the real dyeing environment and to generate real dye wastes. The generated dye wastes are subsequently tackled by facile cotton fabric-based photocatalytic degradation involving a visible light-active TiO2 photocatalyst under solar light. Importantly, such a TiO2 photocatalyst is prepared without any calcination, doping, or coupling with plasmonic metal nanoparticles or narrow-band-gap semiconductors. As a result, the present visible light-responsive cotton fabric-based photocatalytic degradation of the simulated real dye wastes is expected to stimulate various industries for achieving simultaneous effective dyeing and processing of the dye wastes remained. This study also contributes to energy saving and environmental protection.
KeywordsTiO2 Photocatalytic Degradation Cotton Fabric TiO2 Nanoparticles Polyurea
The authors greatly appreciate the special funding project of the technical innovation of Foshan city (2014AG10009), the self-innovation promotion project of the universities in Guangdong Province (2015KQNCX178), and research centre project of engineering technology of Foshan City (2014GA000355).
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