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采用二次阳极氧化工艺制备了高度有序的多孔氧化铝模板,通过模板法与溶胶-电泳沉积和溶胶-凝胶法结合的模板组装技术,合成了3种具有高比表面积的纳米TiO2阵列体系.采用溶胶-凝胶模板法合成了直径50nm,长20μm,间距100nm的棒状TiO2纳米线阵列体系;并通过控制模板孔深,合成了TiO2纳米点周期性调制薄膜,薄膜表面的纳米点直径75nm,点间距100nm,薄膜背面为致密结构;采用溶胶-电泳模板合成方法制备了形似糖葫芦的TiO2纳米线阵列体系,纳米线直径75nm,长为20μm,每根线都具有周期性的凹凸结构,形似糖葫芦.3种纳米阵列体系具有更大的比表面积,可以预见这种表面调制的阵列体系,将表现出不同于一般意义的薄膜及纳米点、纳米线的新物性和新效应.
A highly ordered porous alumina template was prepared by secondary anodic oxidation. Three template arrays with high specific surface area were synthesized by a template assembly technique combined with sol-gel electrophoresis and sol-gel method The TiO2 nanowire arrays with diameter of 50nm, length of 20μm and pitch of 100nm were synthesized by sol-gel template method. The TiO2 nanodots were prepared periodically by controlling the pore depth of the template. The diameter of the nanodots was 75nm , With a pitch of 100 nm and a dense structure on the back of the film. The TiO2 nanowire array system was prepared by sol-gel electrophoresis. The nanowire nanowires with a diameter of 75 nm and a length of 20 μm had periodic concave-convex structure. The three kinds of nano-array system of candied haws have a larger specific surface area. It is foreseeable that the surface-modulated array system will exhibit new physical properties and new effects that are different from the general meaning of the films and nano-dots and nanowires.