Core–shell BiVO4@PDA composite photocatalysts on cotton fabrics for highly efficient photodegradation under visible light
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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 250 min. 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.
KeywordsCotton fabric Core–shell nanoparticle BiVO4 PDA Photocatalytic activity
This Research was supported by the National Key Research and Development Program of China (2016YFA0101102). This research was also supported by the National Natural Science Foundation of China (51503164) and the Natural Science Foundation of Hubei Province (2018CFB679).
- Mohamed MA, Salleh WNW, Jaafar J, Ismail AF, Mutalib MA, Jamil SM (2015) Incorporation of N-doped TiO2 nanorods in regenerated cellulose thin films fabricated from recycled newspaper as a green portable photocatalyst. Carbohydr Polym 133:429–437. https://doi.org/10.1016/j.carbpol.2015.07.057 CrossRefGoogle Scholar
- Song Y, Ye G, Wu F, Wang Z, Liu S, Kopeć M, Matyjaszewski K (2016) Bioinspired polydopamine (PDA) chemistry meets ordered mesoporous carbons (OMCs): a benign surface modification strategy for versatile functionalization. Chem Mater 28:5013–5021. https://doi.org/10.1021/acs.chemmater.6b01729 CrossRefGoogle Scholar
- Tian N, Huang H, He Y, Guo Y, Zhang T, Zhang Y (2015) Mediator-free direct Z-scheme photocatalytic system: BiVO4/g-C3N4 organic–inorganic hybrid photocatalyst with highly efficient visible-light-induced photocatalytic activity. Dalton Trans 44:4297–4307. https://doi.org/10.1039/C4DT03905J CrossRefGoogle Scholar
- Wang Y, Ding X, Chen X, Chen Z, Zheng K, Chen L, Zhang X (2017a) Layer-by-layer self-assembly photocatalytic nanocoating on cotton fabrics as easily recycled photocatalyst for degrading gas and liquid pollutants. Cellulose 24:4569–4580. https://doi.org/10.1007/s10570-017-1445-0 CrossRefGoogle Scholar