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KMID : 1059519900340050413
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Journal of the Korean Chemical Society
1990 Volume.34 No. 5 p.413 ~ p.417
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A Study on the Structural Analysis of Amorphous Silicondioxide Prepared Sol-Gel Method with XRD
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Yoon Dai-Hyun
Kim Ki-Sun
Jung Hyun-Chai
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Abstract
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The structural variation process of amorphous SiO2 gel upon heat-treatment conditions of 80, 250, 450 and 1000℃ has been studied by using the radial distribution functions (RDFobs) estimated from the X-ray diffraction intensities. The expected gel structure was determined by comparing the RDFobs with those for the other six standard samples selected appropriately. The structure of specimens prepared by sol-gel method is well consistent with that of fused SiO2 (β-cristobalite with cubic symmetry) except a slight difference in O-O band distance.
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