文献类型：会议论文

英文题名：Scaling relation between current through suspensions of carbon-doped nanoporous TiO2 submicron particles in silicone oil and reciprocal of shear rate under combined electric and shear fields

作者：Qiu, Z.Y.[1,2]; Shen, Y.[3]; Zhou, L.W.[1]; Zhu, Y.H.[4]

机构：[1] Fudan University, Department of Physics, Shanghai 200433, China; [2] City College of New York, New York, NY 10031, United States; [3] Zhengzhou University of Light Industry, Zhengzhou 450002, China; [4] East China University of Science and Technology, Shanghai 200237, China

会议论文集：2007 NSTI Nanotechnology Conference and Trade Show - NSTI Nanotech 2007, Technical Proceedings

会议日期：May 20, 2007 - May 24, 2007

会议地点：Santa Clara, CA, United states

语种：英文

外文关键词：Carbon - Carbonization - Current density - Electric filters - Hydrolysis - Particle size - Rheometers - Shear deformation - Silicones - Size distribution - Stainless steel - Transmission electron microscopy - X ray photoelectron spectroscopy

摘要：We experimentally demonstrate that there is a simple scaling relation between DC current through a suspension of carbon-doped nanoporous TiO 2 submicron particles in silicone oil and reciprocal of shear rate under combined DC electric and shear fields in a rotating coaxial stainless steel cylinder rheometer. Carbon-doped TiO2 powder is synthesized by hydrolysis of Ti(OBu)4 in alcoholic solution and dodecylamine (DDA) acts as a template. Synthesized carbon-doped TiO2 powder is carbonized at 673°K under protection of flowing N2 gas. Carbon-doped nanoporous TiO2 submicron particles are quantitatively characterized by TEM, XRD, XPS and other analysis tools. The particle size distribution is 100 to 200nm. There are 4-6nm pores on the particle surface layer. The carbon is distributed in a thin 6nm thin surface layer of the particle. An application of the particles is suggested.