Effect of synergy on the visible light activity of B, N and Fe co-doped TiO2 for the degradation of MO

Nanoscale
Mingyang XingFeng Chen

Abstract

Single doped, co-doped and tri-doped TiO(2) with B, N and Fe are successfully synthesized by using the hydrothermal method. The samples are characterized by X-ray diffraction (XRD), UV-vis diffuse reflectance spectroscopy (DRS), and X-ray photoelectron spectroscopy (XPS). The photocatalytic activities of the samples are evaluated for degradation of methyl-orange (MO, 20 mg L(-1)) in aqueous solutions under visible light (lambda > 420 nm). The results of XRD suggest that all the catalysts present anatase crystal. All the doping catalysts show higher photoactivities than pure TiO(2) under visible light irradiation. In the single nonmetal doped TiO(2), the localized dopant levels near the valence band (VB) are responsible for the enhancement of photoactivies. Fe(3+) impurity level formed under the conduction band (CB) induces the high photocatalytic activities of iron doped TiO(2). In the co-doped and tri-doped catalysts, the B 2p and N 2p acceptor states contribute to the band gap narrowing by mixing with O 2p states combined with the overlapping of the conduction band by the iron "d" orbital, resulting in improvement of the photo-performance under visible light irradiation. Iron co-doped with boron catalyst shows low photoactivi...Continue Reading

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Citations

Apr 21, 2011·ACS Applied Materials & Interfaces·Haibei LiuJinlong Zhang
Mar 23, 2011·Chemical Communications : Chem Comm·Mingyang XingBaozhu Tian
Mar 16, 2013·Physical Chemistry Chemical Physics : PCCP·Wei GengXiaojun Yao
Sep 4, 2014·Physical Chemistry Chemical Physics : PCCP·C LiC Q Sun
Jun 15, 2011·Journal of Hazardous Materials·Yongmei WuJinlong Zhang
Jun 23, 2015·Physical Chemistry Chemical Physics : PCCP·Wenqiang DangJunying Zhang
May 29, 2013·Journal of Colloid and Interface Science·Xinjuan LiuChang Q Sun
Aug 28, 2016·Environmental Science and Pollution Research International·Jingke SongJianfu Zhao
Sep 5, 2014·ACS Applied Materials & Interfaces·Lu-Lu LongHan-Qing Yu
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Jan 17, 2015·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Stephen O HaySteven Suib
Nov 6, 2018·Chemical Society Reviews·Jinbo PangMark H Rummeli
Oct 3, 2020·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Muhammad Saqib KhanMuhammad Bilal
Jan 27, 2020·Ecotoxicology and Environmental Safety·Lijun NiuJinwei Li

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