自组装膜引导合成二氧化钛薄膜

摘要采用巯丙基三甲氧基硅烷的分子自组装膜层对基材表面进行修饰,利用低温下氟钛酸铵的配位交换反应,制备出与基底结合紧密的二氧化钛晶态薄膜。磺酸基修饰的基材能够对TiO2膜的沉积产生明显的诱导作用,当(NH4)2TiF6与H3BO3的摩尔比为0.05∶0.10时,薄膜晶型主要为金红石型;比例增大为0.05∶0.15时,薄膜晶型主要为锐钛矿型。沉积的TiO2晶态薄膜具有良好的透光性。

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	杨宏
	李韡
	张金利

关键词：自组装二氧化钛薄膜

Abstract： The surface of substrate was modified by self-assembled layers of 3-mercaptopropyl trimethoxysilane,which induced the deposition of uniform and integrate nanocrystalline titanium oxide films through the ligand exchange reaction of(NH_4)_2TiF_6 at low temperature.The self-assembled layer of sulfonate groups played an important role in the deposition of titanium oxide on the substrate.When the molar ratio of(NH_4)_2TiF_6/H_3BO_3 is 0.05∶0.1,the as-deposited TiO_2 films were mainly rutile crystallites.When the ratio of(NH_4)_2TiF_6/H_3BO_3 increased to 0.05∶0.15,the as-deposited TiO_2 thin films were mainly anatase crystallites.The deposited films show high light transmittance property.

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Received 2007-07-15; published 2007-07-15

引用本文:

杨宏;李韡;张金利;.自组装膜引导合成二氧化钛薄膜[J]. 化学工业与工程, 2007,24(4): 287-290

YANG Hong,LI Wei,ZHANG Jin-li.Synthesis of TiO_2 Thin Films Oriented by Self-Assembly Layers[J]. Chemcial Industry and Engineering, 2007,24(4): 287-290