한국전기전자재료학회:학술대회논문집 (Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference)

한국전기전자재료학회 (The Korean Institute of Electrical and Electronic Material Engineers)
권호 표지

액상 광촉매 졸의 밴드갭 에너지 측정 연구

A study on the Band Gap Energy Measurement of Liquid Phase Photocatalytic Sols

  • 윤초롱 (세종대학교 나노공학과) ;
  • ;
  • 오효진 (세종대학교 나노공학과) ;
  • 황종선 (전남도립 남도대학 컴퓨터응용전기과) ;
  • 김선재 (세종대학교 나노공학과)
  • 발행 : 2006.12.01
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초록

Titania sols or powders were are very promising materials for environment as photocatalyst. The band gap energy of $TiO_2$ has been known to be 2.8 to 3.2 eV. But the measuring system of its band gap is usually depend on absorption properties. Thus, in this study, absorption properties of $TiO_2$ sols prepared by hydrothermal process were researched with the effect of various particle sizes and concentrations. The mean particle size in $TiO_2$ sols increased as 15 nm to 60 nm, absorption graph measured by UV-Vis spectrometer shows to move red-shift. When dilute solution added with $2^n$ in $TiO_2$, the band gap energy increases as linear function.

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