文档介绍：Photocatalytic ozonation of dimethyl phthalate over
TiO2 prepared by a hydrothermal method
YuanJing, Laisheng Li, Qiuyun Zhang
School of Chemistry & Environment
South China Normal University
Guangzhou, China
E-mail: huanjingjingyuan@
Abstract—TiO2 catalyst was prepared by two kinds of different In recent years, hydrothermal synthesis is widely applied for
methods. The photocatalytic activity of TiO2 prepared by the preparation of various anic materials in nanocrystalline
hydrothermal method is times higher than that by sol-gel in state [9]. Hydrothermal technique is a “soft solution chemical
degradation dimethyl phthalate (DMP). bined processing”, which provides a facilitated route to control grain
photocatalysis with UV irradiation and ozonation (TiO2/UV/O3) size, particle morphology, microstructures, position
process considerably improved mineralization and degradation and surface chemical properties via adjusting experimental
of dibutyl pared bined photocatalysis with parameters such as temperature, pressure, duration of process
UV irradiation (TiO2/UV) process, combined ozonation with UV and pH value of solution [9-10].
irradiation (UV/O3) process and ozonation alone (O3) process.
DMP can be quickly mineralized in TiO2/UV/O3, its II. EXPERIMENTAL
mineralization process followed Langmuir-Hinshelwood model.
Its rate constant