Tuning the solubility of TiO2 nanoparticles in apolar solvents by doping with Co2+

被引：21

作者：

Pan, Dengyu ^{[1
]}

Xu, Guoliang

Wan, Jianguo

Shi, Zhongtao

Han, Min

Wang, Guanghou

机构：

[1] Nanjing Univ, Natl Lab Solid State Microstruct, Nanjing 210093, Peoples R China

[2] Nanjing Univ, Dept Phys, Nanjing 210093, Peoples R China

来源：

LANGMUIR | 2006年 / 22卷 / 13期

关键词：

D O I：

10.1021/la060401d

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Anatase Co-doped TiO2 nanoparticles capped by oleic acid with a wide range of dopant concentrations ( 0-23.27%) were synthesized. The surface chemistry of the doped nanoparticles was probed by Fourier transform infrared spectroscopy and thermogravimetric analyses. An interesting effect of doping was discovered: doping with Co2+ at the nanocrystal surface significantly improves the solubility and dispersibility of the nanocrystals in apolar solvents, which can originate in the change in the self-assembled structure of the surface ligand from the weakly hydrophobic quasibilayer in undoped TiO2 nanorods to the strongly hydrophobic monolayer in Co-doped TiO2 nanocrystals.

引用

页码：5537 / 5540

页数：4

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