환경위생공학 (Journal of environmental and Sanitary engineering)

대한환경위생공학회 (Korean Society for Environmental Sanitary Engineers)
권호 표지

졸-겔법엔 의한 단분산 $SiO_2/ZnO$ 복합미립자의 졔조

Preparation of Monodispersed $SiO_2/ZnO$ Composite Fine Powders by Sol-Gel Method

  • 이창우 (단국대학교 공과대학 화학공학과) ;
  • 심원 (단국대학교 공과대학 화학공학과) ;
  • 함영민 (단국대학교 공과대학 화학공학과) ;
  • 허윤행 (서울보건대학 식품가공과)
  • Lee, Chang-Woo (Dept. of Chem. Eng., College of Eng., Dankook Univ.) ;
  • Shim, Won (Dept. of Chem. Eng., College of Eng., Dankook Univ.) ;
  • Hahm, Yeong-Min (Dept. of Chem. Eng., College of Eng., Dankook Univ.) ;
  • Hur, Yun-Haeng (Dept. of Food Processing, Seoul Health College)
  • 발행 : 1998.12.01
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초록

Monodispersed $SiO_2/ZnO$ composite fine powders were prepared by Sol-Gel processing and their surface electrical and UV absorbance properties were investigated. Pseudomorph ZnO fine powders were microcapsuled by $SiO_2/ZnO$ sol fabricated using TEOS[tetraethylorthosilicate, purity 98% and ethanol as a solvent with $NH_3$ catalyst. The effects of experimental parameters such as molar ratio of starting materials on the final particle size and shape of $SiO_2/ZnO$ composite fine powder were discussed. As a result, we could controlled the size of monodispersed $SiO_2/ZnO$ composite fine powders without agglomeration, as well as the good dispersibility in aquous solution. The prepared powders were observed to have the mean particle sizes of $0.26-0.78{\mu}m$ with standard deviations of $0.020-0.063{\mu}m$.

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