1112.5231 (Quanjun Li et al.)

Ethylene glycol-mediated synthesis of nanoporous anatase TiO2 rods and
rutile TiO2 self-assembly chrysanthemums    [PDF]

Quanjun Li, Bingbing Liu, Yingai Li, Ran Liu, Xianglin Li, Shidan Yu, Dedi Liu, Peng Wang, Bo Zou, Tian Cui, Guangtian Zou

Nanoporous anatase TiO2 rods and rutile TiO2 chrysanthemums were successfully synthesized via a simple ethylene glycol-mediated synthesis route. Their morphologies, phase compositions and components were characterized by SEM, TEM, Raman and IR, respectively. The results show that a self-assembly growth takes place in the calcination under vacuum, which makes the titanium glycolate rods transform into rutile TiO2/C chrysanthemums rather than anatase TiO2 rods. It also indicates that the carbon plays an important role in the phase transition process which promotes the phase transition to rutile TiO2 at a lower temperature (400 oC). It provides a new approach to prepare nanoporous rutile TiO2 nanomaterials under low temperature.

View original: http://arxiv.org/abs/1112.5231