Journal
CELLULOSE
Volume 26, Issue 10, Pages 6259-6273Publisher
SPRINGER
DOI: 10.1007/s10570-019-02535-5
Keywords
Cotton fabric; Core-shell nanoparticle; BiVO4; PDA; Photocatalytic activity
Funding
- National Key Research and Development Program of China [2016YFA0101102]
- National Natural Science Foundation of China [51503164]
- Natural Science Foundation of Hubei Province [2018CFB679]
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Highly efficient and reusable photocatalysts that enable photodegradation of pollutants under visible light is the key in waste water treatment with impacts on environment and sustainable development. In this article, we report the preparation and application of a novel core-shell photocatalyst of bismuth vanadate@polydopamine (BiVO4@PDA). The optical absorption property and microstructure of the BiVO4@PDA particles were measured by ultraviolet-visible spectrophotoscopy (UV-Vis), photoluminescence (PL) spectroscopy and transmission electron microscope. The BiVO4@PDA can be attached to cotton fabrics by electrostatic assembly and molecular bonding. The morphology and structure of the cotton fabric@BiVO4@PDA were characterized by SEM, X-ray photoelectron spectroscopy and X-ray diffraction. The photocatalytic activity results show that the methylene blue (MB) can be completely degraded by BiVO4@PDA under visible light irradiation within 250min. Moreover, the mechanism for the MB photodegradation using the cotton fabric@BiVO4@PDA photocatalyst under visible light were investigated. With the novel core-shell structure, the as-developed BiVO4@PDA particles can be used as highly efficient photocatalysts for visible light driven photodegradation. The BiVO4@PDA particles can be attached to different substrates due to the excellent adhesive and bonding nature of PDA towards high-efficient photocatalysis. [GRAPHICS] .
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