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http://dx.doi.org/10.3740/MRSK.2002.12.8.650

Properties of Te Fine Particle Doped SiO2 Gel by the Sol-Gel Method  

Mun, Shong-Soo (경남대학교 신소재공학부)
Jo, Bum-Rae (계명대학교 재료공학과)
Kang, Bong-Sang (경남대학교 신소재공학부)
Publication Information
Korean Journal of Materials Research / v.12, no.8, 2002 , pp. 650-655 More about this Journal
Abstract
$SiO_2$ gels containing dispersed fine Te metal particles have been prepared by the sol- gel method using a starting solution containing Tetraethoxy Silane (Si($OC_2$ $H_{5}$ )$_4$), $H_2$O, Ethylalchol ($C_2$$H_{5}$OH), Nitric Acid ($HNO_3$) and Tellurium Tetracholoride ($TeCl_4$) in a several molar ratio. Gelling time of sols was about 3 days and viscosity of solution was very low about 2~3 cP for 3 days. Heat-treatments of the gel have been performed at 500, 700, 900, 1100 and $1300^{\circ}C$ for 1 hour, respectively. We have investigated TG-DTA, X-ray diffraction patterns and SEM of heat-treatmented gels. The size of Te fine particles dispersed in $SiO_2$ gel was about 0.8~1 $\mu\textrm{m}$ and the shape was almost quadrangle.
Keywords
Sol-Gel; $SiO_2$; Te; Fine Particles; quadrangle;
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Times Cited By KSCI : 1  (Citation Analysis)
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