采用十二烷基胺(DDA)做模板合成了二氧化钛颗粒,并在氮气流中以不同温度碳化制出了掺碳的二氧化钛.掺碳二氧化钛的结构由透射电子显微镜(TEM)、氮气吸附-脱附等温线、XRD、XPS等表征.掺碳二氧化钛颗粒的电镜照片显示颗粒中存在不规则孔,粒径大小为130～200nm;氮气吸附-脱附等温线表明这些符合Ⅳ型等温线的颗粒存在介孔;XRD显示在673K和873K碳化的二氧化钛是锐钛型结构;XPS分析显示碳主要分布在粒子的表面.DDA和二氧化钛的摩尔比在0.049～0.092,并在673K碳化的掺碳二氧化钛粉末分散在石蜡油中形成无水电流变液,因为在粒子表面的碳有合适的电导率,所以表现出很强的电流变效应.
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