Tridoped TiO2 Composite Films for Improved Photocatalytic Activities

被引：5

作者：

Zhao, Li-Zhu ^{[1
]}

Han, Ke ^{[1
]}

Li, Fang ^{[1
]}

Yao, Ming-Ming ^{[1
]}

机构：

[1] Univ Jinan, Sch Chem & Chem Engn, Jinan 250022, Shandong, Peoples R China

来源：

COATINGS | 2019年 / 9卷 / 02期

关键词：

TiO2-ZnO film; Fe; B; F tridoping; sol-gel method; VISIBLE-LIGHT; TITANIUM-DIOXIDE; DEGRADATION; OXIDE; PHOTODEGRADATION; NANOCOMPOSITE;

D O I：

10.3390/coatings9020127

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The Fe/B/F tridoped TiO2-ZnO composite films attached to glass substrates were prepared via a simple sol-gel method. We appraised all samples' photocatalytic activities by the degradation of methyl green and formaldehyde solutions. The samples were characterized by photoluminescence (PL) spectra, UV-Vis diffraction reflectance absorption spectra (DRS), X-ray diffraction (XRD), differential thermal analysis-thermogravimetry (DTA-TG), field emission scanning electron microscopy (FE-SEM) equipped with energy-dispersive spectroscopy (EDS), and Brunner-Emmet-Teller (BET) measurements. According to the results of DRS and PL spectroscopy, the multi-modification could not only enhance visible light absorption intensity, but also decrease the recombination rate of photo-generated electron-hole pairs. XRD results revealed that the sample was mainly in anatase crystal type. FE-SEM results shown that the sample had fewer particle aggregates and almost no cracks. The specific surface area of the Fe/B/F tridoped TiO2-ZnO was 104.9 m(2)g(-1), while that of the pure TiO2 was 84.0 m(2)g(-1). Compared to pure TiO2 and TiO2-ZnO, the Fe/B/F tridoped TiO2-ZnO composite film had the highest photocatalytic activity due to their synergies.

引用

页数：10