Photocatalytic Activities of PET Filaments Deposited with N-Doped TiO2 Nanoparticles Sensitized with Disperse Blue Dyes

被引：12

作者：

Zhang, Hui ^{[1
]}

Han, Ye ^{[1
]}

Yang, Limeng ^{[1
]}

Guo, Xiaoling ^{[1
]}

Wu, Hailiang ^{[1
]}

Mao, Ningtao ^{[2
]}

机构：

[1] Xian Polytech Univ, Res Ctr Funct Text Mat, Sch Text Sci & Engn, Xian 710032, Peoples R China

[2] Univ Leeds, Sch Design, Leeds LS2 9JT, W Yorkshire, England

来源：

CATALYSTS | 2020年 / 10卷 / 05期

基金：

中国国家自然科学基金;

关键词：

N-doped TiO2; disperse blue SE-2R; photocatalytic activity; UV; visible light; VISIBLE-LIGHT-DRIVEN; CHARGE-TRANSFER; THIN-FILMS; DEGRADATION; SURFACE; FABRICATION; DECOMPOSITION; EFFICIENT; HYDROPHILICITY; CONSTRUCTION;

D O I：

10.3390/catal10050531

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

In this study, the enhanced photocatalytic activities of polyethylene terephthalate (PET) filaments deposited with N-doped Titanium dioxide (TiO2) nanoparticles sensitized with water insoluble disperse blue SE-2R dye were investigated. The PET filaments were loaded with two types of N-doped TiO(2)nanoparticles, one with and the other without being sensitized with disperse blue SE-2R dye, in one-pot hydrothermal process respectively. The differences in photocatalytic activities between the N-doped TiO(2)and the dye-sensitized N-doped TiO(2)nanoparticles when exposed to both UV rays and visible lights were analyzed and compared by using their photodegradations of methylene blue (MB) dye. It was demonstrated that the disperse blue dye facilitated the electron-hole separation in N-doped TiO(2)nanoparticles faster under UV irradiation than that under visible light irradiation. The enhanced photocatalytic activity of the PET filaments loaded with dye-sensitized N-doped TiO(2)nanoparticles exposure to UV irradiation, in comparison with that under visible light irradiation, was attributed to both improved light absorption capacity and high separation efficiency of photo-generated electron-hole pairs. Furthermore, the conduction band and band gap of the PET filaments deposited with N-doped TiO(2)nanoparticles sensitized with disperse blue SE-2R dye were influenced by the wavelength of light sources, while its valence band was not affected. The PET filaments deposited with dye-sensitized N-doped TiO(2)nanoparticles have a potential application to degrade organic pollutants.

引用

页数：23