LBJG-016 The self-assembly and formation mechanism of regenerated cellulose films for photocatalytic degradation of C.I. Reactive Blue 19
作者：Ji Fan ;Dan Yu;Wei Wang; Baojiang Liu
關(guān)鍵字：C-PDA-Ag-WO3(c), Photocatalytic fabric, Photodegradation, Visible 49 light, Recycle and reuse
論文來(lái)源：期刊
具體來(lái)源：Cellulose
發(fā)表時(shí)間：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.