writer：Ji Fan ;Dan Yu;Wei Wang; Baojiang Liu
keywords：C-PDA-Ag-WO3(c), Photocatalytic fabric, Photodegradation, Visible 49 light, Recycle and reuse
source：期刊
specific source：Cellulose
Issue time：2019年

In this paper, a simple method has been developed to fabricate flexible fiber

 materials with excellent visible light response. Firstly, polydopamine (PDA) layer was

 deposited on the cotton fibers to functionize cotton fibers. Then, a uniformly dense

 layer of silver and tungsten trioxide nanoparticles was obtained on cotton fabric by

 reduction of PDA. The deposition of PDA provided a media for the Ag-WO3

 photocatalyst to be loaded with good adhension. The results showed that the prepared

 cotton (C)-PDA-Ag-WO3(c) composite photocatalytic material exhibited excellent

 photocatalytic performance with 98 % degradation efficiency of RB-19 dye solution

 within 180 min under visible light irradiation. Moreover, the degradation rate constants

 were 52.43 times, 35.73 times, 12.01 times and 3.77 times higher than those of raw

 cotton, C-PDA, C-PDA-Ag and C-PDA-Ag-WO3(a), respectively. The free radical

trapping experiments showed that h+, ?OH and ?O2 - were important active species in the

photocatalytic process. Based on the characterizations of the system, the possible

 photocatalytic reaction mechanism of the C-PDA-Ag-WO3(c) composite photocatalytic

 material was proposed. This paper provided a new perspective for the preparation of

 high catalytic performance visible light responsive flexible fiber materials applied in the degradation of dye wastewater.