Fabrication of Transparent Superhydrophilic TiO_2 Nanofilm without UV-irradiation  

作　　者：Du Wen1,2,Ye Yinping1,Li Hongxuan1,Zhao Fei1,2,Ji Li1,Quan Weilong1,2,Chen Jianmin1,Zhou Huidi1 1 State Key Laboratory of Solid Lubrication,Lanzhou Institute of Chemical Physics,Chinese Academy of Sciences,Lanzhou 730000,China 2 Graduate University of Chinese Academy of Science,Beijing 100049,China 

出　　处：《稀有金属材料与工程》2012年第S1期263-267,共5页Rare Metal Materials and Engineering

基　　金：National Nature Science Foundation of China(50705094)

摘　　要：A transparent phase-pure anatase TiO2 nanofilm was prepared through magnetron sputtering method,and a subsequent annealing treatment awarded it the superhydrophilic characteristic.To make clear the mechanism of the heat-induced superhydrophilicity,the chemical composition and surface morphology of the film were investigated in detail and compared before and after the annealing treatment mainly by field emission scanning electron microscopy(FESEM),X-ray diffraction method(XRD),Raman spectroscopy,and X-ray photoelectron spectroscope(XPS).The results suggest that the probable mechanism is in accordance with the UV-induced mechanism,where the heat-induced surface oxygen vacancies and hydroxyl radicals play important roles for achieving the superhydrophilicity.A transparent phase-pure anatase TiO2 nanofilm was prepared through magnetron sputtering method,and a subsequent annealing treatment awarded it the superhydrophilic characteristic.To make clear the mechanism of the heat-induced superhydrophilicity,the chemical composition and surface morphology of the film were investigated in detail and compared before and after the annealing treatment mainly by field emission scanning electron microscopy(FESEM),X-ray diffraction method(XRD),Raman spectroscopy,and X-ray photoelectron spectroscope(XPS).The results suggest that the probable mechanism is in accordance with the UV-induced mechanism,where the heat-induced surface oxygen vacancies and hydroxyl radicals play important roles for achieving the superhydrophilicity.

关 键 词：SUPERHYDROPHILICITY TRANSPARENT TiO2 NANOFILMS magnetron sputtering annealing treatment 

分 类 号：TG146.23[一般工业技术—材料科学与工程]