한국세라믹학회지 (Journal of the Korean Ceramic Society)

  • 제41권6호
  • /
  • Pages.471-475
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  • 2004
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  • 1229-7801(pISSN)
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  • 2234-0491(eISSN)
한국세라믹학회 (The Korean Ceramic Society)
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고온 소성용 TiO2-SiO2계 광촉매의 제조 및 특성

Preparation of TiO2-SiO2 Sol and Its Photo-Catalyst Properties for High Temperatures

  • 발행 : 2004.06.01
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초록

졸겔 공정으로 안정한 TiO$_2$, SiO$_2$, PBA(Pseudo Boehemite Alumina) 졸을 제조하였다. 제조한 졸 용액은 비교적 균일한 10∼30nm의 입자크기를 나타내었다. TiO$_2$졸에 SiO$_2$졸의 첨가량이 증가함에 따라, anatase상에서 rutile 상으로 전이되는 상전이 온도를 $600^{\circ}C$ 이상으로 증가시켜 광분해 특성을 향상시켰다. 또한, TiO$_2$ 졸 용액에 SiO$_2$ 졸을 10∼30wt% 첨가하여 120$0^{\circ}C$ 이상의 고온 소성 후에도 anatase가 주된 상으로 소량의 rutile 상이 관찰되었다 또한 SiO$_2$20wt% 첨가 시, 최대의 광분해 특성을 나타내었다. 그러나, PBA 졸의 첨가는 첨가량에 관계없이 광분해 특성에 영향을 주지 않았다.

TiO$_2$, SiO$_2$, and PBA(Pseudo Boehemite Alumina) sol were prepared by sol-gel process. The particle sizes of these sol exhibited uniform 10∼30 nm. As the amount of SiO$_2$ sol increased, the temperature of phase transition (from anatase phase to rutile phase) was raised temperature than $600^{\circ}C$, which attributed to the enhanced photocatalyst properties. Also, the anatase phase was obtained with very small amount of the rutile phase from the addition of SiO$_2$ (10∼30 wt%) at annealing temperature of 120$0^{\circ}C$. The specimen with 20 wt% SiO$_2$ sol exhibited the maximum photocatalyst properties. But, the specimen with PBA sol did not affect photocatalytic activity due to the presence of rutile phase.

키워드

참고문헌

  1. J. Mater. Sci. v.35 no.2 Crystal Structure and Optical Property of Ti$O-2$ Gels and Films Prepared from Tiedta Complexes as Titania Precursors T. Nishide;M. Sato;H. Hara https://doi.org/10.1023/A:1004731804075
  2. Surf. Sci. v.446 no.1-2 The Surface Structure of $TiO_2$(001) after High Temperature Annealing Studied by AFM, STM, and Optical Microscopy H. Norenberg;F. Dinelli;G. Briggs
  3. Thin Solid Films v.228 Microstructure and Optical Properties of Amorphous $TiO_2-SiO_2$ Composite Films Synthesized by Helicon Plasma Sputtering X. Wang;H. Masumoto;Y. Someno;T. Hirai https://doi.org/10.1016/0040-6090(93)90574-9
  4. Thin Solid Films v.359 Optical and Mechanical Properties of $TiO_2/SiO-2$/ Organically Modified Silane Composite Films Prepared by Sol-Gel Processing W. Que;Z. Sun;Y. Zhou;Y. L. Lam;Y. C. Chan;C. H. Kam https://doi.org/10.1016/S0040-6090(99)00746-4
  5. Thin Solid Films v.360 Reactive Sputter Deposition of Titania Dioxide R. Dannenberg;P. Greene https://doi.org/10.1016/S0040-6090(99)00938-4
  6. J. Kor. Ceram. Soc. v.36 no.7 Surface Modification of Mica Using Ti$O_2$ Prepared by Alkoxide Hydrolysis Method S. P. Han;Y. H. Yun;S. H. Lee;S. C. Choi
  7. J. Kor. Ceram. Soc. v.30 no.7 Preparation of Glass-Ceramics in $Li_2O-Al_2O_3-TiO_2-SiO_2$ System by Sol-Gel Technique (1) Preparation of Porous Monolithic Gel in $Li_2O-Al_2O_3-TiO_2-SiO-2$ System by Sol-Gel Method H. S. Cho;J. S. Yang;C. O. Kweon;H. H. Lee