Photocatalytic ozonation of dimethyl phthalate with TiO2 prepared by a hydrothermal method

被引：94

作者：

Jing, Yuan ^{[1
]}

Li, Laisheng ^{[1
]}

Zhang, Qiuyun ^{[1
]}

Lu, Ping ^{[1
]}

Liu, Peihong ^{[1
]}

Lu, Xianghong ^{[1
]}

机构：

[1] S China Normal Univ, Sch Chem & Environm, Guangzhou 510006, Guangdong, Peoples R China

来源：

JOURNAL OF HAZARDOUS MATERIALS | 2011年 / 189卷 / 1-2期

基金：

中国国家自然科学基金;

关键词：

TiO2; A hydrothermal method; Dimethyl phthalate; Photocatalytic ozonation; Kinetics; TITANIUM-DIOXIDE NANOPARTICLES; CATALYTIC OZONATION; DIBUTYL PHTHALATE; ACTIVATED CARBON; AQUEOUS-SOLUTION; MESOPOROUS TIO2; THIN-FILMS; GAS-PHASE; DEGRADATION; OZONE;

D O I：

10.1016/j.jhazmat.2011.01.132

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

TiO2 was prepared by a hydrothermal method at a low temperature and used to degrade and mineralize dimethyl phthalate (DMP). TiO2 was characterized by XRD, TEM, BET and UV-vis techniques. The characteristics of TiO2 prepared by a hydrothermal method (h-t TiO2) included a good crystalline anatase phase, greater surface area, stronger absorption to UV light wavelength and lower agglomeration than TiO2 prepared by a classic sol-gel method (s-g TiO2). The photocatalytic activity of h-t TiO2 prepared under optimal hydrothermal condition (180 degrees C for 10 h) was 2.5 times higher than that of s-g TiO2 in degrading DMP. The process of photocatalysis combined with UV irradiation and ozonation (TiO2/UV/O-3) considerably improved the mineralization and degradation of DMP compared to photocatalysis combined with UV irradiation (TiO2/UV), ozonation combined with UV irradiation (UV/O-3), and ozonation alone (O-3). A kinetic study showed the mineralization in TiO2/UV/O-3 followed the Langmuir-Hinshelwood model. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：40 / 47

页数：8

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