摘要
本文利用溶胶-凝胶法制备了TiO_2纳米粉体,采用扫描电子显微镜(SEM)和X射线衍射仪(XRD)分析了TiO_2粉体的形貌及结构,TiO_2以锐钛矿型为主,粉体粒径大约为2 nm左右。采用粘结剂固定化法在玻璃板表面负载了TiO_2粉体,以甲基橙为研究对象,紫外灯为光源,研究了负载型TiO_2光催化剂的光催化降解行为。在实验范围内,适宜的光催化降解条件为:甲基橙初始浓度为5mg/L、催化剂用量为0.8 g、催化剂负载次数为4次,此时降解率达到88%。
In this paper, nanaocrystalline TiO2 powders were prepared by sol-gel method and characterized by scanning electron microscopy （SEM） and X-ray diffraction （XRD） techniques. TiO2 is proved to be anatase and the average size of TiO2 particles is about 2 nm. Moreover, TiO2 powders were immobilized on a glass-plate using adhesive and supported TiO2 photocatalyst was prepared. The photocatalytic degradation of methyl orange in water was studied in photoreactor with UV lamp as light source. The optimal parameters for photocatalysis are as follows：, the initial concentration of methyl orange is 5 rag/L, catalyst dosage is 0.8 g and catalyst loading times are 4 times. The degradation rate of 88% is obtained.
作者
王珊珊
彭淑静
郑阳阳
陈兴剑
WANG Shan-shan PENG Shu-jing ZHENG Yang-yang CHEN Xing-jian(School of Chemical ＆ Environmental Engineering, Liaoning Jinzhou 121001)
出处
《天津化工》
CAS
2017年第5期14-15,25,共3页
Tianjin Chemical Industry
基金
辽宁省教育厅一般研究项目(L2015236)
辽宁省教育厅团队项目(LT2013014)
关键词
纳米TIO2
光催化剂
粘结剂法
甲基橙
nanocrystalline TiO2
photoeatalyst
adhesive method
methyl orange
