Solvotherinal synthesis of nanocrystalline TiO2 in toluene with surfactant
Solvotherinal synthesis of nanocrystalline TiO2 in toluene with surfactant
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DOI：
10.1016/s0022-0248(03)01468-4
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发表时间：
2003-10-01
影响因子：
1.8
通讯作者：
Seo, HJ
中科院分区：
文献类型：
--
作者：
Kim, CS;Moon, BK;Seo, HJ
采用表面活性剂辅助溶剂热法，在甲苯溶液中合成了窄分散纳米TiO2。以异丙醇钛（TIP）为前驱体，在表面活性剂溶解的溶液中高温分解，制备了具有高分子量的TiO_2纳米粒子。在高压釜中250 ℃热处理20 h后，合成了平均粒径小于6 nm的低分散TiO2纳米晶。当溶液中加入足够量的TIP或表面活性剂时，形成了长的哑铃状纳米棒，这可能是由于粒子沿沿着[001]轴定向生长所致。通过X射线衍射和透射电子显微镜对产物进行了表征。(C)2003 Elsevier B.V.保留所有权利。
Synthesis of narrow-dispersed nanocrystalline TiO2 was investigated by surfactant-aided solvothermal synthetic method in toluene solutions. Titanium isopropoxide (TIP) was used as precursor, which was decomposed at high temperature in the surfactant-dissolved solution. After the solution was thermally treated at 250degreesC for 20 h in an autoclave, low-dispersed TiO2 nanocrystalline particles with average size of < 6 nm were synthesized. When sufficient amount of TIP or surfactant was added in the solution, long dumbbell-shaped nanorods were formed, which may be due to the oriented growth of particles along [001] axis. Characterization of products was investigated by X-ray diffraction and transmission electron microscopy. (C) 2003 Elsevier B.V. All rights reserved.