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

fYear

2010

fDate

18-20 June 2010

Firstpage

1

Lastpage

4

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Bioinformatics and Biomedical Engineering (iCBBE), 2010 4th International Conference on

Conference_Location

Chengdu

ISSN

2151-7614

Print_ISBN

978-1-4244-4712-1

Electronic_ISBN

2151-7614

Type

conf

DOI

10.1109/ICBBE.2010.5515632

Filename

5515632