Volume 11 Issue 6
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Li, X., Liu, Y., Yang, P., & Shi, Y. (2013). Visible light-driven photocatalysis of W, N co-doped TiO2. Particuology, 11(6), 732–736. https://doi.org/10.1016/j.partic.2012.06.018
Visible light-driven photocatalysis of W, N co-doped TiO2
Xue Li *, Yunyi Liu, Pengfei Yang, Yongchao Shi
College of Chemical Engineering, Shenyang University of Chemical Technology, Shenyang 110142, China
10.1016/j.partic.2012.06.018
Volume 11, Issue 6, December 2013, Pages 732-736
Received 2 March 2012, Revised 18 June 2012, Accepted 27 June 2012, Available online 13 March 2013.
E-mail: lxltm@hotmail.com

Highlights

► W, N co-doped TiO2 nanoparticles was synthesized by a sol–gel method. 

► W, N co-doped TiO2 absorption edge shifted to longer wavelength. 

► Its photocatalytic activity for degradation of methyl orange under natural light was higher.

Abstract

W, N co-doped TiO2 nanoparticles were synthesized by a sol–gel method. The prepared samples were characterized by X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FT-IR), X-ray photoelectron spectroscopy (XPS) and diffuse reflectance spectrophotometry (DRS). The results showed that the co-doped photocatalysts were essentially uniform spherical particles with the smallest particle size of 22.5 nm. Compared to un-doped TiO2, N-TiO2 and P-25, the absorption edge of the W, N co-doped TiO2 shifted to longer wavelength and its photocatalytic activity for degradation of methyl orange (MO) under Xe-lamp (350 W) was higher.

Graphical abstract
Keywords
TiO2; Co-doped; Visible light; Photocatalytic activity