Ultrasonic Preparation of Nitrogen-doped TiO2 Nan crystalline Photo catalysts and Evaluation of Photo catalytic Activity

Pure TiO2 and N-doped nano-TiO2 photo catalysts were individually prepared following the sol-gel method under ultrasonic conditions. The photo catalytic decomposition of methyl orange (MO) solution under ultraviolet and visible light irradiation was used as a probe reaction to estimate their photo c...

Full description

Saved in:
Bibliographic Details
Published in:IOP conference series. Materials Science and Engineering 2017-12, Vol.274 (1)
Main Authors: Zhang, Huifang, Lu, Zixin, Tang, Mengyao, Cao, Wenping, Cai, Kangni, Liu, Hanhu
Format: Article
Language:English
Subjects:
Catalysts
Catalytic activity
Crystal structure
degradation
Dyes
Electromagnetic absorption
Light irradiation
methyl orange
Nitrogen
nitrogen doping
Optical properties
photo catalytic oxidation
Sol-gel processes
Titanium dioxide
Ultrasonic imaging
Ultrasound
Ultraviolet radiation
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Pure TiO2 and N-doped nano-TiO2 photo catalysts were individually prepared following the sol-gel method under ultrasonic conditions. The photo catalytic decomposition of methyl orange (MO) solution under ultraviolet and visible light irradiation was used as a probe reaction to estimate their photo catalytic activities. The particle size, crystal structure, and optical properties of the prepared TiO2 were performed by X-ray diffraction, transmission electron microscopy and UV-vis diffuse reflectance spectroscopy. The results suggest that ultrasound significantly reduced the size of the TiO2 particles, improved particle dispersion, which in turn improve the photo catalytic activity of TiO2 under ultraviolet light. Ultrasound also promoted the doping of non-metal nitrogen and markedly enhanced the visible light absorption capacity of the N-doped nano-TiO2. Compared with pure TiO2, the degradation rate for MO under visible light of U-N-TiO2 was increased by 70%.
ISSN:1757-8981
1757-899X
DOI:10.1088/1757-899X/274/1/012154