LbL Fabricated PU/PSS/{201}TiO2 Multilayer Thin Films with Exposed High-Index {201} Facet for Environmental Applications 


Vol. 24,  No. 3, pp. 811-822, Mar.  2023
10.1007/s12221-023-00048-4


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  Abstract

Titanium dioxide (TiO 2 ), as the most widely used semiconductor photocatalyst, still suff ers from low quantum effi ciency, easy agglomeration, and diffi cult separation, which limits the practical application. In this study, high-index {201}TiO 2 was prepared with a dandelion-like lamellar structure through the control of hydrofl uoric acid (HF), and then, the (PU/PSS/TiO 2 ), (PU/PSS/{201}TiO 2 ) hybrid fi lms were prepared by layer-by-layer (LbL) self-assembly technique. Polyurethane (PU) and sodium polystyrene sulfonate (PSS) were used as a substrate for the immobilization of TiO 2 . The photocatalytic activity and reusability of the hybrid fi lms were investigated with experiments of photocatalytic degradation of methyl blue (MB). These results indicate that the (PU/PSS/{201}TiO 2 ) n hybrid fi lms had superior photocatalytic degradation performance relative to (PU/PSS/TiO 2 ) n and TiO 2 , and the photocatalytic activity of the fi lm could be repeatedly used for up to six times reuse. In addition, the corresponding mechanism of enhanced photocatalytic activity was proposed on the basis of the investigated results from reactive species scavenging of (PU/PSS/{201}TiO 2 ) 10 . The active species h + played the most important role in the photocatalytic reaction. This work may develop one kind of high-index {201}TiO 2 thin by LbL self-assembly, making the photocatalyst a promising candidate in wastewater treatment application.

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  Cite this article

[IEEE Style]

C. Wu, J. Ma, J. Dai, Y. Duan, J. Xue, L. Qiang, N. Xu, "LbL Fabricated PU/PSS/{201}TiO2 Multilayer Thin Films with Exposed High-Index {201} Facet for Environmental Applications," Fibers and Polymers, vol. 24, no. 3, pp. 811-822, 2023. DOI: 10.1007/s12221-023-00048-4.

[ACM Style]

Chao Wu, Jing Ma, Jianan Dai, Yinli Duan, Juanqin Xue, Liangsheng Qiang, and Nijun Xu. 2023. LbL Fabricated PU/PSS/{201}TiO2 Multilayer Thin Films with Exposed High-Index {201} Facet for Environmental Applications. Fibers and Polymers, 24, 3, (2023), 811-822. DOI: 10.1007/s12221-023-00048-4.

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pISSN : 1229 - 9197
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