Annealing Effects on Properties of Pure and Iron Doped Nano-TiO2 Films Prepared by Reactive Magnetron Sputtering
Pure and iron doped TiO2 films were prepared by means of pulsed DC reactive magnetron sputtering method using pure and mixed titanium and iron targets. The TiO2 films were deposited on microscope glass slides. The photocatalytic activity of the TiO2 films was evaluated by measuring the degradation rate of aqueous methyl orange on the films under UV irradiation. Structure properties of the films and the effects on photocatalytic properties after annealing were investigated. The films were adhered on the substrates properly before annealing, whereas cracks appeared on the annealed films as well as weaker adhesion between the films and the substrates. The films were still in the anatase phase after annealing below 700 ℃, accompanied with apparently enhanced XRD peak intensity, which indicated crystalline growth during annealing process. Phase transformation from anatase to rutile occurred when the films were annealed above 800 ℃. Photocatalytic activities of the films dropped drastically alone with increasing annealing temperature.
Wenjie Zhang Ruyuan Li Ying Li Shenglong Zhu Fuhui Wang
School of Environmental and Chemical Engineering Shenyang Ligong University Shenyang 110159, China State Key Laboratory for Corrosion and Protection Institute of Metal Research The Chinese Academy of
国际会议
成都
英文
1-4
2010-06-18（万方平台首次上网日期，不代表论文的发表时间）