所属单位：化学工程学院

发表刊物：CrystEngComm

项目来源：国家自然科学基金项目

关键字：Titanium Dioxide；silver;nanoheterostructures;photocatyltic

摘要：In this work, Ag/TiO2 nanoheterostructures with Ag nanocrystals well-grown on TiO2-based nanofiber mats have been achieved by means of a novel and straighforward protocol combining an electrospinning technique and a solvothermal process. The experimental results indicated that the morphology and size of the secondary Ag nanostructures could be tailored by altering the experimental parameters, such as the reaction time and solvent as well as the reducing agent in the solvothermal treatment. The investigation of photocatalytic ability showed that the Ag/TiO2 nanoheterostructures possess an excellent photocatalytic activity superior to the pure TiO2 nanofiber for the degradation of Rhodamine B (RB) dye driven by visible light. The results indicated that Ag might be responsible for the visible light induced photocatalytic degradation by improving the photogenerated electrons and holes separation as well as charge migration, allowing both the electrons and holes to partake in the overall photocatalytic reaction. In addition, Ag has a good light absorption capability, extending the response of TiO2 to visible light. Finally, the corresponding possible mechanism related to the photocatalytic performance of the Ag/TiO2 nanoheterostructures was discussed in detail. Additionally, the separation and recovery process of the Ag/TiO2 nanoheterostructures might be easily acheived by sedimentation without a decrease in the photocatalytic ability because of their particular one-dimensional nanostructured nature.

第一作者：苏春彦

论文类型：期刊论文

学科门类：工学

卷号：14

期号：11

页面范围：1

是否译文：否

发表时间：2012-03-20