Acta Phys. -Chim. Sin. ›› 2007, Vol. 23 ›› Issue (06): 856-860.doi: 10.3866/PKU.WHXB20070612

• ARTICLE • Previous Articles     Next Articles

Synthesis and Characterization of TiO2 Nano-crystalline with Different Morphologies by Low-temperature Hydrothermal Method

ZHANG Xia; ZHAO Yan; ZHANG Cai-Bei; MENG Hao   

  1. School of Science, Northeastern University, Shenyang 110004, P. R. China; Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, P. R. China

  • Received:2006-11-20 Revised:2007-01-23 Published:2007-06-04
  • Contact: ZHANG Xia E-mail:zhangxia@imr.ac.cn

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Abstract:

Oleic acid was used in low-temperature hydrothermal reaction of tetrabutyl titanate (TBOT) to control the growth direction of TiO2 particles. TiO2 nano-crystallines in the shapes of needle and spindle were synthesized. The morphology and structure of these TiO2 particles were confirmed by means of TEM and XRD. The FT-IR spectrum analysis proved that oleic acid molecule was absorbed onto the surface of TiO2 particles through electrostatic interaction. The band-gap energies of TiO2 nano-crystallines were calculated according to their UV-Vis spectra. In the photocatalytic reaction, the spindle TiO2 particles showed higher activity, and 90% rhodanmine B was degraded in 60 min.

Key words: TiO2 nano-crystalline, Needle, Spindle, Photocatalysis