Title :
Preparation of supported nano-TiO2 photocatalyst and photocatalytic decomposition for SO2 and NOx
Author :
Zhao, Li ; Liu, Yinjie ; Liu, Zhaoyu
Author_Institution :
Sch. of Environ. Sci. & Eng., North China Electr. Power Univ., Baoding, China
Abstract :
TiO2 supported photocatalyst was prepared by liquid-phase deposition method. The performance of TiO2 photocatalyst was characterized by SEM and XRD. The anatase TiO2 existed and the particle size of TiO2 photocatalyst was 21.8nm, the structure of TiO2 photocatalyst was uniform and compact. Coated TiO2 quantum of 4-6mm particle size sand, initial concentration of 20mg/L methylene blue, and condition of pH acidity had a high photocatalytic degradation efficiency on methylene blue. Supported nano-TiO2 photocatalyst exhibited good photocatalytic activity and stability. The photocatalytic decomposition of NOx showed that under optimum experimental conditions, initial concentration in 930mg/m3, the removal efficiency for NOx reached above 53%.The degradation of SO2 at high concentration level was carried out on the self-made photoreactor, and the removal efficiency of SO2 was about 98%, and the higher removal efficiency of NOx and SO2 was obtained in this experiment.
Keywords :
X-ray diffraction; catalysis; nanofabrication; nanostructured materials; nitrogen compounds; photochemistry; scanning electron microscopy; semiconductor materials; silicon compounds; titanium compounds; SEM; SO2; TiO2; XRD; anatase phase; coating; liquid-phase deposition; methylene blue; nanophotocatalyst; pH acidity; particle size; photocatalytic decomposition; removal efficiency; self-made photoreactor; size 21.8 nm; size 4 nm to 6 nm; Lighting; Microstructure; Temperature; SO2 and NOx; photocatalytic decomposition; supported nano-TiO2;
Conference_Titel :
Materials for Renewable Energy & Environment (ICMREE), 2011 International Conference on
Conference_Location :
Shanghai
Print_ISBN :
978-1-61284-749-8
DOI :
10.1109/ICMREE.2011.5930593
