【摘要】 以四烷基氢氧化铵为结构导向剂,正丁醇为结构导向助剂,采用溶胶凝胶-水热法组合制备了不同形貌的二氧化钛纳米晶。通过TG/DTA、TEM、XRD、DLS等手段对产物进行了结构和形貌表征。研究表明,通过选择结构导向剂的烷基种类可分别得到四方型和纺锤型纳米晶,在一定范围内改变其浓度则可以控制晶体的晶化度、分散性和颗粒尺寸。更多还原

【Abstract】 Series of nanocrystalline TiO₂ was prepared directly by small molecular amine-assisted hydrothermal method at low temperature.X-ray diffraction（XRD）,transmission electron microscopy（TEM）,thermogravimetry/ differential thermal analysis（TG/DTA）,fourier transform infrared spectroscopy（FTIR） and deep scattering layer method（DLS） were employed to characterize the crystalline phase and morphology of as-prepared TiO₂ nanoparticles.Shape-controled TiO₂ nanoparticles could be synthesised with different sorts and amount of tetraalkylammonium hydroxide（TAAOH）.Anatase TiO₂ was obtained directly without calcination by this moderate temperature route.更多还原