Synergistic effect of N- and F-codoping on the structure and photocatalytic performance of TiO2

Jiemei Yu; Zongming Liu; Haitao Zhang; Taizhong Huang; Jitian Han; Yihe Zhang; Daohuang Chong

doi:10.1016/j.jes.2014.06.046

Synergistic effect of N- and F-codoping on the structure and photocatalytic performance of TiO2

J Environ Sci (China). 2015 Feb 1:28:148-56. doi: 10.1016/j.jes.2014.06.046. Epub 2014 Dec 13.

Authors

Jiemei Yu¹, Zongming Liu², Haitao Zhang², Taizhong Huang², Jitian Han³, Yihe Zhang⁴, Daohuang Chong²

Affiliations

¹ School of Energy and Power Engineering, Shandong University, Jinan 250061, China; School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, China. Electronic address: chm_yujm@ujn.edu.cn.
² School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, China.
³ School of Energy and Power Engineering, Shandong University, Jinan 250061, China.
⁴ School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, China; School of Materials Science and Technology, China University of Geosciences, Beijing 100083, China.

PMID: 25662249
DOI: 10.1016/j.jes.2014.06.046

Abstract

Three types of TiO2 nanostructures were synthesized via a facile hydrolysis method at 195°C. Effects of the preparation method and doping with N and F on the crystal structure and photocatalytic performance of TiO2 were investigated. The nanomaterials were characterized by X-ray diffraction, transmission electron microscopy, X-ray photoelectron spectroscopy, Brunauer-Emmett-Teller porosimetry, ultraviolet-visible diffuse reflectance spectroscopy and fluorescent emission spectra. Their photo-catalytic activity was examined by the photodegradation of methylene blue in aqueous solution under both ultra-violet and visible light irradiation. The results show that nitrogen and fluorine co-doped anatase TiO2 had the characteristics of a smaller crystalline size, broader light absorption spectrum and lower charge recombination than pure TiO2. Most importantly, more efficient photocatalytic activity under both ultra-violet and visible light was observed. The obtained N-F-TiO2 nanomaterial shows considerable potential for water treatment under sunlight irradiation.

Keywords: Anion doping; Nanoparticle; Photocatalyst; TiO(2) hydrolysis.

Publication types

Research Support, Non-U.S. Gov't
Review

MeSH terms

Fluorine / chemistry*
Nanostructures / analysis
Nanostructures / chemistry
Nanostructures / radiation effects*
Nitrogen / chemistry*
Photolysis
Titanium / analysis
Titanium / radiation effects*

Substances

titanium dioxide
Fluorine
Titanium
Nitrogen