Journal of the Korean Applied Science and Technology (한국응용과학기술학회지)

The Korean Society of Applied Science and Technology (한국응용과학기술학회)
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Photocatalytic Degradation of Organic Compounds over $xTiO_2$-$ySiO_2$ Powders Prepared by Sol-Gel Method

졸-겔법으로 제조된 $xTiO_2$-$ySiO_2$ 분말에 의한 유기물의 광분해

  • 양천회 (한밭대학교 공과대학 화학공학과) ;
  • 이봉철 (충남보건환경연구원)
  • Published : 2008.06.30
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Abstract

$xTiO_2$-$ySiO_2$ system photocatalysts were developed by sol-gel method based on the change of production parameters, and their structure of crystallization and the specific surface area were measured. Considering the efficiency of the ethanol and phenol degradation using the catalyst, the conclusions were obtained as follows: By means of X-ray analysis of $xTiO_2$-$ySiO_2$ powder that is obtained from Titanium and Silicon alkoxide by sol-gel process, it is shown that crystal structure of anatase type is a dominating structure and, on the other hand, the structure of rutile also partly exists. The increase of $SiO_2$ contents causes the decrease of the degree of crystallization of the gel, whereas the specific surface area preferentially increases. It is shown that more than 90% of ethanol and phenol are degraded when reaction time is about three and an hours, and the maximum degradation rate of ethanol and phenol is shown in $60TiO_2$-$40SiO_2$ catalyst.

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References

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