Structure and Raman Spectroscopy of Nanocrystalline TiO<suB>2</suB> Powder Derived by Sol-Gel Process

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	ZHOU Qi-fa
	WU Shang-hua
	ZHANG Qing-qi
	ZHANG Jin-xiu
	CHEN Jian
	ZHANG Wei-hong

关键词 ： 78.66.Sq, 42.65.An, 42.70.Nq

Abstract： Nanocrystalline TiO₂ powder was prepared by sol-gel process. The structures of the as-prepared and the TiO₂ powder heat-treated at different temperatures were studied by thermogravimetric analyzer, differential thermal analysis, x-ray diffraction, and Raman spectra. As the powder was heat-treated at 350°C, it turned into tetragonal anatase structure. A structural transformation from anatase to rutile type occurred and the grains of the powder grew drastically when the powder was heat-treated at above 550°C. The structural transformation from anatase to rutile type completed at 750°C. The Raman spectra of TiO₂ nanocrystalline powder were also studied.

Key words： 78.66.Sq 42.65.An 42.70.Nq

出版日期: 1997-04-01

:	78.66.Sq	(Composite materials)
	42.65.An	(Optical susceptibility, hyperpolarizability)
	42.70.Nq	(Other nonlinear optical materials; photorefractive and semiconductor materials)

引用本文:

ZHOU Qi-fa;WU Shang-hua;ZHANG Qing-qi;ZHANG Jin-xiu;CHEN Jian;ZHANG Wei-hong. Structure and Raman Spectroscopy of Nanocrystalline TiO₂ Powder Derived by Sol-Gel Process[J]. 中国物理快报, 1997, 14(4): 306-309.
ZHOU Qi-fa, WU Shang-hua, ZHANG Qing-qi, ZHANG Jin-xiu, CHEN Jian, ZHANG Wei-hong. Structure and Raman Spectroscopy of Nanocrystalline TiO₂ Powder Derived by Sol-Gel Process. Chin. Phys. Lett., 1997, 14(4): 306-309.

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https://cpl.iphy.ac.cn/CN/ 或 https://cpl.iphy.ac.cn/CN/Y1997/V14/I4/306