摘要
以亲油改性为目的,选用棕榈酸为改性剂对纳米TiO2进行表面改性,使TiO2表面由亲水疏油性变为亲油疏水性;研究了有机改性的影响因素,并用TEM,IR,Zeta(ζ)电位等多种手段对改性效果进行表征,确定了最佳改性温度和最佳改性时间;结果表明,当改性温度为100℃,改性时间为1.5 h时,纳米TiO2的改性效果最好.
The surface modification of nano-scale titanium acid as modifier. And the surfaces of titanium dioxide （TiO2 dioxide （TiO2） and the effect factors are studied by using hexadecanoic ） are modified from hydrophilic to hydrophobic and a covalent bond is formed by chemical reaction between the surface hydroxylic groups and organic long-chain molecules such as hexadecanoic acid. The modified titanium dioxide （TiO2） can be well dispersed in hexane. The structure and morphology are characterized by Transmission Electron Microscope （TEM）, Infrared Spectra （IR）, Zeta potential （4） etc and the optimal modification time and the optimal temperature are determined. The results show that the modification effect and dispersion effect of nano-scale titanium dioxide （TiO2） are optimal when the modification time is 1.5 h and the temperature is 100℃.
出处
《厦门大学学报（自然科学版）》
CAS
CSCD
北大核心
2005年第6期886-888,共3页
Journal of Xiamen University：Natural Science
基金
国家自然科学基金优秀国家重点实验室研究项目(20023001)
福建省科技攻关计划重点项目(2002N025)资助
关键词
纳米TIO2
表面改性
棕榈酸
nanometer TiO2
surface modification
hexadecanoic acid
