树枝状PVDF纳米纤维膜负载TiO<sub>2</sub>吸附-光催化降解染料废水

doi:10.11896/cldb.21060080

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Abstract The tree-like polyvinylidene fluoride (PVDF) nanofibrous membrane supported titanium dioxide (TiO₂) photocatalyst was prepared using an electrospinning method by adding tetrabutylammonium chloride hydrate as the organic branched salt. The surface morphology and structure of the photocatalyst were characterized, and then its adsorption and photocatalytic degradation performance on the removal of dye wastewater was investigated using rhodamine B as the target pollutant. The results showed that the tree-like PVDF nanofibrous membrane consists of trunk fibers (310 nm diameter) and branching fibers (5—100 nm diameter), and TiO₂ could be uniformly distributed on the surface of both trunk and branching fibers. Compared with normal PVDF nanofibrous membrane supported TiO₂ photocatalyst, this tree-like nanofibrous membrane showed much higher hydrophilicity and specific surface area, which increased the equilibrium adsorption of rhodamine B in water at room temperature by 5.4 times;it also exhibited better photocatalytic performance, and the degradation rate constants of the dye under UV and visible light were increased by 1.0 and 2.3 times, respectively.

Key words： nanofiber structure modulation titanium dioxide (TiO₂) photocatalytic adsorption

Published: 25 February 2023 Online: 2023-03-02

CLC number:

TB324

Fund:Natural Science Foundation of China (52003192), Tianjin Technical Innovation Guidance Special Fund (20YDTPJC00920), and Tianjin Applied Basic and Frontier Technology Research Program (15JCQNJC06300).

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	SHI Xianbing
	WANG Tao
	LYU Mingze
	ZHAO Jin
	HAN Zhenbang

Cite this article:

SHI Xianbing,WANG Tao,LYU Mingze, et al. Adsorption-Photocatalytic Degradation of Dye Wastewater for Tree-like PVDF Nanofibrous Membrane Supported TiO₂[J]. Materials Reports, 2023, 37(4): 21060080-6.

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http://www.mater-rep.com/EN/10.11896/cldb.21060080 OR http://www.mater-rep.com/EN/Y2023/V37/I4/21060080

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