摘要
以四氯化钛为前驱体,用溶胶—凝胶法制备了TiO2纳米膜,并进行了炼焦厂废水的光催化降解实验,考察了制备条件对其光催化降解性能的影响。结果表明最佳工艺条件为:四氯化钛∶乙醇∶水=30∶400∶25,溶胶体系pH=7,掺铁量Fe∶Ti=0.16,干凝胶在450℃煅烧2h,由此制成的TiO2纳米膜光催化降解炼焦厂废水的降解率超过79%。
Nanosized TiO2 Film was prepared using TIC14 as precursor by sol - gel method. Photocatalytie degradation experiments for cokey waste water were carried out. Influence of preparation conditions of nanosized TiO2 film on photocatalytic degradation performance was inspected. The result showed that the optimal preparation technology for nanosized film was found to be ： pH=7 for sol-gelsystemofV（TiC14）： V（C2H.5OH）： V（H20）=30： 400： 25 , and calcining temperature 450℃ , and calcining time 2h for the dry gel. Degradation rate of cokey waste water surpassed 79% with the nanosized TiO2 film.
出处
《湖南人文科技学院学报》
2006年第3期28-30,共3页
Journal of Hunan University of Humanities,Science and Technology
基金
湖南省高等学校科学研究课题(编号:2005C001)
院科学研究重点课题(编号:2003A003)
关键词
二氧化钛
纳米膜
炼焦厂废水
光催化降解
TiO2
nanosized film
cokey waster water
photocatalytic degradation
