锐钛矿型TiO_2薄膜的低温制备及其光催化性能研究  

Low-temperature preparation and photocatalytic performance of anatase TiO_2 thin films

作　　者：李勇[1] 艾凡荣[1] 闫洪[1] 

机构地区：[1]南昌大学机电工程学院,江西南昌330031

出　　处：《电子元件与材料》2012年第4期49-51,共3页Electronic Components And Materials

基　　金：国家自然科学基金资助项目(No.51102131;No.51165032);江西省教育厅科技项目资助(No.GJJ12036);江西省高等学校科技创新团队计划资助项目(No.00008713)

摘　　要：采用改进的sol-gel法及浸渍–提拉工艺在低温条件下制备了纳米TiO2薄膜。利用X射线衍射仪(XRD)、傅里叶变换红外光谱仪(FTIR)、扫描电镜(SEM)及紫外–可见光光谱仪(UV-Vis)对所制TiO2薄膜的物相结构、表面形貌以及光吸收特性进行了表征,并利用紫外光照降解亚甲基蓝溶液的方法考察了TiO2薄膜的光催化活性。结果表明:低温制备的纳米TiO2薄膜为锐钛矿结构,表面均匀致密,且对紫外光表现出较强的吸收特性。在紫外光照射48 h后,该TiO2薄膜对亚甲基蓝溶液的降解率为67.4%。Nano-TiO2 thin films were prepared at low temperature by an improved sol-gel method and dip-coating technique. The phase and crystal structure, surface morphology and optical absorption properties of the prepared TiO2 films were characterized by X-ray diffractometer （XRD）, Fourier transform infrared spectrometer （FTIR）, scanning electron microscope （SEM） and ultraviolet-visible spectrometer （UV-Vis）, respectively. The photocatalytic activity of the TiO2 films was evaluated through degrading the methylene blue solution under UV radiation. The results show that the Nano-TiO2 thin films prepared at low temperature possess an anatase structure and a uniform dense surface, and show a strong UV absorption. With the Nano-TiO2 films as the photocatalyst, 67.4% of the methylene blue solution is degraded after exposure to UV radiation for 48 h.

关 键 词：低温 锐钛矿 TIO2薄膜 光催化 

分 类 号：TB321[一般工业技术—材料科学与工程] O643[理学—物理化学]