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Microwave-assisted synthesis of anatase TiO(2) nanorods with mesopores
Xingtao Jia1, Wen He, Xudong Zhang
1Department of Materials Science and Engineering, Shandong Institute of Light Industry, Jinan, 250100, People's Republic of China. College of Chemistry and Chemical Engineering, China University of Petroleum, Dongying, 257061, People's Republic of China.
Abstract:
Pure anatase TiO(2) nanorods with mesopores were synthesized by a simple and low cost microwave-assisted method when tri-block copolymer was used as a structure stabilization agent and TiCl(4) as metal precursor. TEM investigation showed that larger nanorods were assembled by pearl-necklace-shaped nanorods following an oriented attachment mechanism in a specific direction. A proposed hypothetical scheme showed that the formation of lyotropic titania liquid crystal (TLC) serves a key role in the stabilization of nanorods, and the mesopores on nanorods are derived from the vacancy of inter-particles of nanorods and regions lacking inorganic precursors in the TLC structure. Control experiments showed that microwave treatment plays a key role in the maintenance of original morphologies and mesostructures free from destruction even under high temperature calcinations.
