以PVP为软模板构建的层状介孔TiO<sub>2</sub>及其光催化性能

doi:10.11896/cldb.21080004

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Abstract The layered mesoporous PVP-TiO₂ was prepared by inorganic precipitation-peptization method using titanium sulfate as titanium source and polyvinylpyrrolidone as soft template. The surface morphology, crystal phase composition, ultraviolet absorption band edge, specific surface area and pore structure of the samples were characterized by scanning electron microscopy (SEM), X-Ray diffractometer (XRD), ultraviolet visible absorption spectrum (UV-Vis-Abs), and specific surface area meter (BET), respectively. The formation mechanism of layered structure was studied as well. The photocatalytic properties of the samples were studied by using methyl orange as the target degradation product. The results showed that the best degradation rate of methyl orange by PVP-TiO₂ reached 93.84%, which was significantly higher than that of pure TiO₂under the same conditions. After TiO₂ was modified by PVP, layered mesoporous structure was formed, and the crystallinity and grain size were decreased, promoting the transition from anatase to rutile crystal. In addition, the introduction of PVP made a blue shift of the light absorption band edge of TiO₂.

Key words： precipitation-peptization method PVP soft template layered mesoporous TiO₂ photocatalysis

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

CLC number:

TB34

Fund:Sichuan Science and Technology Program (2023YFG0247).

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	ZHANG Liyuan
	YANG Jinju
	YOU Jia

Cite this article:

ZHANG Liyuan,YANG Jinju,YOU Jia. Construction of Layered Mesoporous TiO₂ Using PVP as Soft Template and Its Photocatalytic Performance[J]. Materials Reports, 2023, 37(4): 21080004-6.

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http://www.mater-rep.com/EN/10.11896/cldb.21080004 OR http://www.mater-rep.com/EN/Y2023/V37/I4/21080004

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