高等学校化学学报

高等学校化学学报

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羧基功能化离子液体表面修饰TiO2纳米微粒的制备及结构表征

张晟卯, 李健, 吴志申, 张平余, 张治军   

  1. 河南大学特种功能材料重点实验室, 开封 475001
  • 收稿日期:2005-08-24 修回日期:1900-01-01 出版日期:2006-09-10 发布日期:2006-09-10
  • 通讯作者: 张晟卯

Preparation and Structural Characterization of Carboxyl-functional Ionic
Liquidsurface-modified TiO2 Nanoparticles

ZHANG Sheng-Mao, LI Jian, WU Zhi-Shen, ZHANG Ping-Yu, ZHANG Zhi-Jun   

  1. Key Lab for Special Functional Material, Henan University, Kaifeng 475001, China
  • Received:2005-08-24 Revised:1900-01-01 Online:2006-09-10 Published:2006-09-10
  • Contact: ZHANG Sheng-Mao

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摘要： 本文用沉淀法制备了羧基功能化离子液体表面修饰半导体TiO2纳米颗粒, 并用FTIR, TEM, XRD和XPS对其结构进行了表征. 初步探讨了羧基功能化离子液体修饰TiO2纳米微粒的形成机理.

关键词: 羧基功能化离子液体, TiO2纳米微粒, 螯合作用, 表面修饰

Abstract: 1-Methyl-3-carboxymethyl imidazolium chlorine([C2OOHmim]Cl) ionic liquid surface\|capped TiO2 nanoparticles were prepared by using tetra-n-butyl titanate ethanol solution as a precursor. The structure of nanoparticles was characterized by FTIR, TEM, XRD and XPS. The results confirmed that [C2OOHmim]·Cl ionic liquid combined with TiO2 nanoparticles by chelation, the average diameter of TiO2 nanoparticles was about 8 nm and anatase state was obtained. And only anatase existed even after calcinated at 750 ℃. As to the formation mechanism, we think that the inorganic-organic copolymerized surface-capped layer and repulsive force of positive charge played an important role in the formation and stabilization of TiO2 nanoparticles.

Key words: Carboxyl-functionalized ionic liquid, TiO2 nanoparticles, Chelation, Surface-modification

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