Title :
Photocatalytic Ozonation of Dimethyl Phthalate over TiO2 Prepared by a Hydrothermal Method
Author :
Jing, Yuan ; Li, Laisheng ; Zhang, Qiuyun
Author_Institution :
Sch. of Chem. & Environ., South China Normal Univ., Guangzhou, China
Abstract :
TiO2 catalyst was prepared by two kinds of different methods. The photocatalytic activity of TiO2 prepared by the hydrothermal method is 2.5 times higher than that by sol-gel in degradation dimethyl phthalate (DMP). The combined photocatalysis with UV irradiation and ozonation (TiO2/UV/O3) process considerably improved mineralization and degradation of dibutyl phthalate compared to combined photocatalysis with UV irradiation (TiO2/UV) process, combined ozonation with UV irradiation (UV/O3) process and ozonation alone (O3) process. DMP can be quickly mineralized in TiO2/UV/O3, its mineralization process followed Langmuir-Hinshelwood model. Its rate constant k is 0.42 mg/ (L·min) and Langmuir adsorption coefficient K is 0.0417 L/mg.
Keywords :
adsorption; catalysis; chemical engineering; photochemistry; sol-gel processing; titanium compounds; Langmuir adsorption; Langmuir-Hinshelwood model; TiO2; UV irradiation; UV ozonation; degradation dimethyl phthalate; hydrothermal method; photocatalysis; photocatalytic ozonation; sol-gel; Chemical processes; Chemistry; Degradation; Glass; Mineralization; Nanoparticles; Ovens; Surface morphology; Temperature; Titanium compounds;
Conference_Titel :
Bioinformatics and Biomedical Engineering (iCBBE), 2010 4th International Conference on
Conference_Location :
Chengdu
Print_ISBN :
978-1-4244-4712-1
Electronic_ISBN :
2151-7614
DOI :
10.1109/ICBBE.2010.5515632
