Inhibition effect of phosphate on the crystal grain growth of nanosized titania
来源期刊：Rare Metals2009年第4期
论文作者：FENG Xiaohuia, LIU Jingzeb, LI Pinga, ZHANG Yanfenga, and WEI Yua a College of Chemistry and Material Science, Hebei Normal University, Shijiazhuang , China b College of Life Science, Hebei Normal University, Shijiazhuang , China
文章页码：385 - 390
摘 要：The inhibitory effect of phosphate on the crystal grain growth of nanosized titania during high temperature calcination was investigated. Nanosized titanium dioxide powders prepared by hydrolysis of titanium tetrachloride were soaked in phosphate solutions with different concentrations. The obtained powders calcined at various temperatures were characterized by X-ray diffraction （XRD）, Fourier transform infrared spectroscopy （FTIR）, and X-ray photoelectronic spectroscopy （XPS）. The grain size of the samples without phosphate treatment increased quickly when calcined at high temperatures, while the grain size of the samples with phosphate modification increased slowly when calcined at the same temperature. This phenomenon implies that phosphate treatment plays an important role in inhibiting the crystal grain growth of titania. The possible mechanism of the inhibition effect of phosphate on titania is discussed.
FENG Xiaohuia, LIU Jingzeb, LI Pinga, ZHANG Yanfenga, and WEI Yua a College of Chemistry and Material Science, Hebei Normal University, Shijiazhuang 050016, China b College of Life Science, Hebei Normal University, Shijiazhuang 050016, China
摘 要：The inhibitory effect of phosphate on the crystal grain growth of nanosized titania during high temperature calcination was investigated. Nanosized titanium dioxide powders prepared by hydrolysis of titanium tetrachloride were soaked in phosphate solutions with different concentrations. The obtained powders calcined at various temperatures were characterized by X-ray diffraction （XRD）, Fourier transform infrared spectroscopy （FTIR）, and X-ray photoelectronic spectroscopy （XPS）. The grain size of the samples without phosphate treatment increased quickly when calcined at high temperatures, while the grain size of the samples with phosphate modification increased slowly when calcined at the same temperature. This phenomenon implies that phosphate treatment plays an important role in inhibiting the crystal grain growth of titania. The possible mechanism of the inhibition effect of phosphate on titania is discussed.
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