Journal of Textile Research ›› 2022, Vol. 43 ›› Issue (06): 100-106.doi: 10.13475/j.fzxb.20210604907

• Dyeing and Finishing & Chemicals • Previous Articles     Next Articles

Preparation and property of reduced graphene oxide/viscose-based BiVO4 photocatalyst

QIAN Jiaqi1, QU Jian'gang1(), HU Xiaolin1, MAO Qinghui1,2   

  1. 1. School of Textile and Clothing, Nantong University, Nantong, Jiangsu 226019, China
    2. National Advanced Printing and Dyeing Technology Innovation Center, Taian, Shandong 271000, China
  • Received:2021-06-21 Revised:2022-03-24 Online:2022-06-15 Published:2022-07-15
  • Contact: QU Jian'gang E-mail:qujiangang@ntu.edu.cn

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Abstract:

In order to overcome the disadvantages of low photocatalytic efficiency and recyclability of BiVO4, silane coupling agent KH-560 and graphene oxide (GO) were used to modify the viscose nonwoven fabrics, then BiVO4 was grown on its surface by stirring hydrothermal method to prepare reduced graphene oxide (RGO)/viscose-based BiVO4 photocatalyst. The materials as prepared were characterized by scanning electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy and ultraviolet visible absorption spectroscopy. The photocatalytic activity, reusability and photocatalytic mechanism of RGO/viscose based BiVO4 photocatalyst for C.I. Reactive Black 5 decolorization were studied. The results show that BiVO4 is successfully loaded on RGO/viscose nonwovens and consequently RGO/viscose-based BiVO4 photocatalytic materials are obtained. Under the irradiation of 1 kW xenon lamp, the decolorization rate can reach up to 95% in 90 min, and over 92% is preserved even after five recycles. Furthermore, free radical capture experiments show that photogenerated hole, superoxide radical and hydroxyl radical participate in the photocatalytic reaction, and among which the hydroxyl radical is the most important.

Key words: graphene, viscose, BiVO4, photocatalysis, C.I. Reactive Black 5, waste water treatment

CLC Number: 

  • TS190.3

Fig.1

SEM images of different fabrics. (a) GO;(b) Viscos; (c) GO/V-K; (d) BiVO4/RGO/V-K"

Fig.2

XRD patterns of V-K, GO/V-K and BiVO4/RGO/V-K"

Fig.3

XPS survey spectra of V-K, GO/V-K and BiVO4/RGO/V-K(a) and high resolution spectra of V(b), C(c) and O(d) of BiVO4/RGO/V-K"

Fig.4

UV-Vis absorption spectra of viscose, V-K, GO/V-K, BiVO4/V-K and BiVO4/RGO/V-K"

Fig.5

Band gap energy of BiVO4/V-K and BiVO4/RGO/V-K"

Fig.6

Photocatalytic activity of V-K, GO/V-K, BiVO4/V-K and BiVO4/RGO/V-K for RB5"

Fig.7

Visible spectra of RB5 before and after degradation"

Fig.8

Recyclability of BiVO4/RGO/V-K"

Fig.9

Effect of different trappers on the photocatalytic activity of BiVO4/RGO/V-K"

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