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.
出处
《安徽工程大学学报》
CAS
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)
关键词
TIO2
两步合成
纳米线
表征
TiO2
two-step process
nanowires
characterization
