Giant electrorheological effects of aluminum-doped TiO2 nanoparticles--颗粒学报PARTICUOLOGY

Tang, H., He, J., & Persello, J. (2010). Giant electrorheological effects of aluminum-doped TiO2 nanoparticles. Particuology, 8(5), 442-446. https://doi.org/10.1016/j.partic.2010.07.007

Giant electrorheological effects of aluminum-doped TiO₂ nanoparticles

Hongzhe Tang ^{a b}, Junhui He ^b *, Jacques Persello ^c

a Beihang Sino-French Engineer School, Beihang University, Beijing 100191, China
b Functional Nanomaterials Laboratory, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China
c LCMI – University of Franche-Comté, 16 route de Gray, La Bouloie, 25030 Besançon cedex, France

10.1016/j.partic.2010.07.007

Volume 8, Issue 5, October 2010, Pages 442-446

Received 12 June 2009, Revised 27 October 2009, Accepted 27 July 2010, Available online 31 August 2010.

E-mail: jhhe@mail.ipc.ac.cn

Highlights

Abstract

Titania nanoparticles doped with cations have been synthesized via a modified hydrolysis method. The X-ray diffraction analyses, scanning electron microscopy and other characteristics measurements, were used to study the structure of the nanoparticles. The results showed interesting electrorheological (ER) effect with titania nanoparticles modified by aluminum ions, and different cations on ER effect were determined by ionic potential and resistance of the particle aggregates in the electric field. The doping ratio of aluminum ions was dominated by the appropriate sites of the particle surface and the ER effect strongly depends on the doping ratio.

Graphical abstract

Keywords

Electrorheological fluid; Ionic potential; Surface structure; Aluminum ions

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