Preparation and characterization of F-modified C-TiO₂and its photocatalytic properties

Abstract

Phone/Fax: þ86 28 86291132 F-modified C-doped TiO 2 composites (CF-TiO 2 ) were synthesized via a simple sol-gel method by using NaF as the fluorine source followed by heat treatment at 700 8C in nitrogen atmosphere. The as-prepared CF-TiO 2 composites were characterized via transmission electron microscopy, Xray diffraction, N 2 sorption, X-ray photoelectron spectroscopy, UV-Vis diffuse reflectance spectroscopy, and photoluminescence. Carbon was doped into the anatase titania lattice, and the surface of C-doped TiO 2 were modified by fluorine species. The CF-TiO 2 composite showed excellent photocatalytic activity in degrading methylene blue under sunlight and simulated sunlight irradiation.

Fe-TiO2 Nanoparticles Synthesized by Green Chemistry for Potential Application in Waste Water Photocatalytic Treatment

“…Solar energy is a renewable resource, and its efficient utilization in controlling environmental pollutions by using photocatalytic materials is one of the main goals of modern science and engineering [1][2][3][4]. Owing to exceptional and appropriate properties including nontoxic, excellent chemical stability, strong ultraviolet (UV) absorption, and wide band gap energy (anatase 3.2 eV and rutile 3.4 eV), titanium dioxide (TiO 2 ) is a recognized metal oxide semiconductor which could be extensively applied to diverse applications.…”

Synthesis, properties, and applications of black titanium dioxide nanomaterials

“…So far, many approaches have been attempted [21][22][23][24][25]. For example, introducing metal (such as Fe, Co, Cr, Ni, and Mo) [26][27][28][29][30][31][32][33][34][35][36][37], noble-metal (such as Au, Ag, and Pt) [38,39] or non-metal elements (such as N, C, F, and S) [22,[40][41][42][43][44][45][46][47][48][49][50], and co-doping metal and non-metal elements (such as Mo + C, Fe + N, Mo + S, and Co + N, S) [51][52][53][54][55][56][57] have been used to enhance the light absorption properties. Huang and co-workers [43,50] studied the electronic band structures of those doped TiO 2 nanomaterials by density functional theory, and explained the mechanism of the enhanced visible-light absorption.…”

Chemical bath deposition of well-aligned ZnO nanorod arrays on Ag rods for photoelectrocatalytic degradation of rhodamine B

“…With the increasing environmental concerns, development of high‐efficient photocatalysts for degradation of persistent organic pollutants becomes a constantly pursued goal. Among the various kinds of photocatalysts, metal oxides have attracted lots of attention due to their relatively high photocatalytic activity and low‐cost advantage . However, the high recombination rate of the photo‐generated charges and the incomplete separation of the photocatalysts from the pollutant solutions have hindered the applications of photocatalysis (PC).…”