TiO_2多孔纳米固体对罗丹明B的热催化降解作用  

Degradation of RhB Catalyzed by TiO_2 Bulk Porous Nanosolids

作　　者：刘秀琳[1] 余丽丽[2] 徐红燕[1] 李梅[1] 王成建[2] 蒋民华[1] 崔得良[1] 

机构地区：[1]山东大学晶体材料国家重点实验室,济南250100 [2]山东大学物理与微电子学院,济南250100

出　　处：《化学学报》2004年第24期2398-2402,共5页Acta Chimica Sinica

基　　金：国家自然科学基金 (Nos.50 2 72 0 36 ;90 1 0 1 0 1 6;90 2 0 60 4 2 );教育部科学技术研究重点项目以及博士点基金 (No.2 0 0 4 0 4 2 2 0 57)资助项目

摘　　要：以我们研制的体块TiO2 多孔纳米固体为原料 ,通过强制交换方法 ,将罗丹明B (RhB)组装进TiO2 多孔纳米固体的孔道中制备了TiO2 /RhB复合材料 ,用扫描电子显微镜、压汞仪、红外吸收光谱和可见吸收光谱等方法对样品进行了表征 .测试结果表明 ,TiO2 多孔纳米固体的比表面积为 60 6m2 /g ,主要孔径分布在 5～ 13nm很窄的范围内 .另外 ,我们从实验上观察到了TiO2 多孔纳米固体在无光照的情况下对RhB具有催化降解作用 ,而且交换时间、交换温度等因素对这种降解作用有明显的影响 .Using bulk TiO2 porous nanosolids and Rhodamine B (RhB) as the starting materials, TiO2/RhB composite was synthesized by assembling RhB into the channels of TiO2 porous nanosolids. The properties of the composite were characterized by scanning electron microscopy, mercury intrusion porosimetry, Fourier transformation infrared spectroscopy and visible light absorption spectroscopy. The results showed that the specific surface area and major pore radius distribution of TiO2 porous nanosolids were 60.6 m(2)/g and 5 - 13 nm, respectively. In addition, the catalytic effect of TiO2 porous nanosolids on the degradation of RhB was also investigated in this paper. It was found that, the catalytic efficiency of TiO2 porous nanosolids was affected by both temperature and time of exchange process.

关 键 词：纳米固体 TIO2 罗丹明B 多孔 热催化 红外吸收光谱 表征 降解作用 观察 实验 

分 类 号：O643.3[理学—物理化学]