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以钛酸四丁酯为钛源,以一种水性凝胶剂,3-{[(2S)-2-(十八酰胺基)-3-苯丙基]酰胺基}丁羧酸四乙胺盐(简记为TC18PheBu)在水溶液中自组装形成的聚集体为模板,经溶胶-凝胶缩聚,煅烧得到一种项链状TiO2纳米颗粒.FE-SEM分析表明所制得的项链状TiO2纳米颗粒直径约为200~400nm.采用FT-IR技术探讨了TiO2纳米颗粒形成机理.即在钛酸四丁酯水解形成的带负电的低聚物与TC18PheBu中季铵盐正离子之间,通过静电相互作用自组装形成纳米颗粒.XRD图谱表明TiO2纳米颗粒为锐钛矿晶型二氧化钛.

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