摘要
以钛酸四正丁酯为起始原料,采用溶胶-微波法合成出TiO2纳米粒子,借助XRD、UV-vis吸收光谱等测试手段对其进行了表征,并以甲基橙为模型污染物考察了酸水比、微波反应温度和微波反应时间等因素对样品光催化性能的影响。结果表明,溶胶-微波法制备TiO2的最佳条件为:酸水比7:1,微波反应温度150℃,反应时间8 min。所得样品用于卷烟厂蒸叶车间废水的光催化氧化处理,效果较好,太阳光照射7h后,废水由黄色变为无色,异味消失。
Using Ti(n-OC4H9)4 as starting material, Nano - TiO2 was synthesized via sol - microwave process. The X - ray diffraction (XRD) and UV - Vis absorption spectrum techniques were used to characterized the phase structure and spectrum properties of the synthesized samples. Methyl orange was selected as a pollutant model to test the photocatalytic activity of TiO2. Effects of ratio of acid to water, microwave reaction temperature and reaction time on photocatalytic activity of the sample were also investigated. The results indicate that the best ratio of acid to water, microwave reaction temperature and reaction time are 7: 1, 150℃, 8min, respectively. In addition, the synthesized samples are used to treat wastewater from Yan'an Cigarette Factory. Experimental results show that this sample exhibits high photocatalytic activity, the color of wastewater changes from yellow brown to colorless and the smell disappears under sunlight for 7h.
出处
《化学与粘合》
CAS
2009年第1期10-14,共5页
Chemistry and Adhesion
基金
国家自然科学基金(20773104)
教育部新世纪人才支持计划项目(编号:NCET-06-0891)
教育部重点科研基金(编号:208143)
陕西省重点实验室重点科研基金(编号:03JS014
05JS038)
陕西省科技厅科研基金(编号:2007-119)
陕西省教育厅专项科研基金项目(编号:07JK435
06JK154)
延安大学科研基金(编号:YD2004-200
KYAD2007010)资助项目
关键词
TIO2
溶胶-微波法
光催化性能
蒸叶废水
Titanium dioxide
sol - microwave process
photocatalytic activity
steamed leaf wastewater