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One-pot synthesis of uniform TiO2 nanorods and monodisperse TiO2 microspheres and their light scattering properties

HEQUAN WANG1,* , YONGCAI WANG1,2, WENXIA ZHAO3, CHAOLUN LIANG3, YONG. LIU2, HAI WANG2, HAIBO LI1

Affiliation

  1. Institute of Mechanical and Electrical Engineering, Shenyang Institute of Aeronautical Engineering, Shenyang 110136, China
  2. School of Physics and Engineering, Institute for Solar Energy Systems, State Key Laboratory of Optoelectronic Materials and Technologies, Sun Yat-sen University, Guangzhou 510275, China
  3. Instrumental Analysis and Research center, Sun Yat-sen University, Guangzhou 510275, China

Abstract

The large-scale highly ordered TiO2 nanorods and monodisperse TiO2 microspheres were synthesized via a facile hydrothermal route. Under the same conditions, the TiO2 nanorod arrays were directly obtained on the fluorine-doped tin oxide (FTO) substrate, while the monodisperse TiO2 microspheres were obtained at the bottom of Teflon-lined autoclave without the FTO substrate. The as-prepared TiO2 microspheres are found to be composed of radial single-crystal rutile TiO2 nanorods. The FTO substrate plays a crucial role in the oriented growth of nanorod arrays. Accordingly, a possible mechanism for the formation of TiO2 nanorod arrays and TiO2 microspheres was proposed. The light scattering properties of TiO2 nanorod arrays and TiO2 microspheres were characterized by the UV-Vis spectrometry. The superior light scattering properties of TiO2 microspheres makes them promising materials for applications in the solar cells.

Keywords

Titanium oxide, Nanorods, Microsphere, Scattering properties.

Citation

HEQUAN WANG, YONGCAI WANG, WENXIA ZHAO, CHAOLUN LIANG, YONG. LIU, HAI WANG, HAIBO LI, One-pot synthesis of uniform TiO2 nanorods and monodisperse TiO2 microspheres and their light scattering properties, Optoelectronics and Advanced Materials - Rapid Communications, 4, 6, June 2010, pp.803-807 (2010).

Submitted at: April 9, 2010

Accepted at: June 16, 2010