Enhanced photocatalytic degradation of tetracycline hydrochloride by molecular imprinted film modified TiO_2 nanotubes

• 来源期刊: 科学通报(英文版)
• 学科: 工学
• 年，卷（期）: 2012,（6）
• 页码范围: 601-605
• 页数: 5页
• 分类号: TB383.1
• 语种: 中文

摘要

To enhance the photocatalytic activity of TiO2 nanotubes,tetracycline hydrochloride(TC) molecularly imprinted titania modified TiO2 nanotubes(MIP-TiO2) was prepared by liquid phase deposition,which improved the molecular recognition ability of the photocatalyst toward template molecules.This MIP-TiO2 photocatalyst was characterized by ESEM and XRD,which showed that the imprinted titania was deposited on the nanotube uniformly and was of well-crystalized anatase-type.In the adsorption experiments,MIP-TiO2 exhibited a high adsorption capacity(about 1.6 times higher than that of TiO2 nanotubes) for TC mainly because of its imprinted sites and high surface area.Under UV irradiation MIP-TiO2 showed enhanced photocatalytic activity with an apparent first-order rate constant 1.9-fold that of TiO 2 nanotubes.