两步法仿生合成TiO_2纳米线及其表征  

Two-step synthesis of TiO_2 nanowires and Characterization

作　　者：曹宁[1] 陶玉贵[1] 周朋[1] 金成[1] 孙忆晨[1] 葛飞[1] 

机构地区：[1]安徽工程大学生物与化学工程学院,安徽芜湖241000

出　　处：《安徽工程大学学报》2012年第4期8-11,20,共5页Journal of Anhui Polytechnic University

基　　金：安徽省高校自然科学基金资助项目(KJ2012A034)

摘　　要：以钛酸正四丁酯及L-半胱氨酸为钛源和模板剂,醇热法仿生合成纳米TiO2前体,再将前体与氢氧化钠溶液水热反应制备出TiO2纳米线.通过SEM、XRD、FT-IR以及比表面积及孔径分析仪对前体及纳米线进行表征,结果表明:TiO2纳米线为无定型的钛酸盐结构,直径在20～40nm,长度达数微米,其比表面积为312.58m2/g;煅烧后TiO2纳米线由无定型转变成锐钛矿型结构,FT-IR图谱分析表明纳米线含有Ti-O键.TiO2 nanowires were synthesized by using then, and L-Cys as templating agent. Solvothermal tetrabutyl titanate as titanium source was conducted synthesis of nano-TiO2 precursors was conducted. Then, nano-TiO2 precursors were treated with the hot alkaline solution at high temperatures to prepare TiO2 nanowires. Then the samples were characterized by X-ray diffraction （XRD）,scanning electron microscope （SEM）, FT-IR and N2 adsorption-desorption experiments. The results show that TiO2 nanowires were amorphous titanate structure, about 20;40 nm in diameter, several microns in length and the specific surface area up to 312.58 m2g. After calcining,the TiO2 nanowires changed into anatase. FT-IR spectrum analysis indicates that the samples contain Ti-O bond.

关 键 词：TIO2 两步合成 纳米线 表征 

分 类 号：TB34[一般工业技术—材料科学与工程]