高等学校化学学报

高等学校化学学报 ›› 2000, Vol. 21 ›› Issue (S1): 285.

• Chemistry in Materials Sciences • 上一篇    下一篇

Preparation of Nanocrystalline Titania Directly from Industrial Titanium Hydroxide

GAO Rong-Jie, DU Min   

  1. College of Chemistry and Chemical Engineering, Ocean University of Qingdao, Qingdao 266003
  • 出版日期:2000-12-31 发布日期:2000-12-31

Preparation of Nanocrystalline Titania Directly from Industrial Titanium Hydroxide

GAO Rong-Jie, DU Min   

  1. College of Chemistry and Chemical Engineering, Ocean University of Qingdao, Qingdao 266003
  • Online:2000-12-31 Published:2000-12-31

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摘要：

Nanocrystalline titania was prepared directly from industrial titanium hydroxide by NH4NO3 decomposition at 573K. DTA-TG, XRD, TEM and BET were employed to character the sample.The DTA-TG curves were measured by differential thermal balance to detect the phase transformation temperature of samples. Using α-Al2O3 as the standard substance. XRD was used to determine the phase composition of titania powders on a diffractometer (RIGUKU, Cu Kα=0.15406 nm, 40 kV). Crystallite sizes were determined from line broadening measurements by using Scherrer formula. TEM image of sample was obtained on a Phillips EM420 microscope, operating at l00kV and the special surface and pore volume are examined by BET method.

Abstract:

Nanocrystalline titania was prepared directly from industrial titanium hydroxide by NH4NO3 decomposition at 573K. DTA-TG, XRD, TEM and BET were employed to character the sample.The DTA-TG curves were measured by differential thermal balance to detect the phase transformation temperature of samples. Using α-Al2O3 as the standard substance. XRD was used to determine the phase composition of titania powders on a diffractometer (RIGUKU, Cu Kα=0.15406 nm, 40 kV). Crystallite sizes were determined from line broadening measurements by using Scherrer formula. TEM image of sample was obtained on a Phillips EM420 microscope, operating at l00kV and the special surface and pore volume are examined by BET method.

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