title: The synchronized wash-off of reactive-dyed cotton fabrics and decolorization of resultant wastewater using titanium dioxide nano-fibers.
abstract: In this research, titanium dioxide (TiO2) nano-fibers with a well-organized anatase structure were synthesized by a hydrothermal method. Their structural properties were characterized by X-ray diffraction (XRD), Brunauer-Emmett-Teller (BET), and transmission electron microscope (TEM) analysis, respectively. Subsequently, the TiO2 nano-fibers were optically excited under the ultraviolet (UV) irradiation to decolorize the reactive dye solution. The influences of initial pH, concentrations of reactive dye and TiO2 nano-fibers as well as irradiation time on rate of photocatalytic decolorization were investigated. Based on their excellent photocatalytic performance, a novel method for achieving the synchronized wash-off of reactive-dyed cotton and decolorization of resultant wastewater was developed. It was found that the wash fastness of reactive-dyed cotton after TiO2-based wash-off was equal to that after standard way. The influences of TiO2-based wash-off on the properties of cotton substrates were determined by Fourier transform infrared spectroscopy (FTIR), XRD, and scanning electron microscope (SEM) analysis, respectively, which indicated that this new synchronized method would exert few damages to the cotton substrate.
authors: Chemical Engineering College of Qingdao University, Qingdao 266071, China; Collaborative Innovation Center for Marine Biomass Fibers, Materials and Textiles of Shandong Province, Qingdao 266071, China; Sunvim Group Co., Ltd., Gaomi 261500, China. Electronic address: hly1978@163.com.
authors: Longyun
authors: L
authors: Hao
authors: Chemical Engineering College of Qingdao University, Qingdao 266071, China.
authors: Rui
authors: R
authors: Wang
authors: Chemical Engineering College of Qingdao University, Qingdao 266071, China; Collaborative Innovation Center for Marine Biomass Fibers, Materials and Textiles of Shandong Province, Qingdao 266071, China.
authors: Kuanjun
authors: K
authors: Fang
authors: Chemical Engineering College of Qingdao University, Qingdao 266071, China.
authors: Jingquan
authors: J
authors: Liu
authors: Sunvim Group Co., Ltd., Gaomi 261500, China.
authors: Yong
authors: Y
authors: Sun
authors: Sunvim Group Co., Ltd., Gaomi 261500, China.
authors: Yajing
authors: Y
authors: Men
keywords: Decolorization; Reactive-dyed cotton; TiO(2) nano-fibers; Wash-off