Clean Technology (청정기술)

The Korean Society of Clean Technology (한국청정기술학회)
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Hydrogen Production from Photocatalytic Splitting of Methanol/water Solution over Ti Impregnated WO3

티타늄 함유 텅스텐 산화물 광촉매를 이용한 메탄올/물 분해로부터 수소제조

  • Lee, Gayoung (Department of Chemistry, Yeungnam University) ;
  • Park, Yujin (Department of Chemistry, Yeungnam University) ;
  • Park, No-Kuk (Department of Chemical Engineering, Yeungnam University) ;
  • Lee, Tae Jin (Department of Chemical Engineering, Yeungnam University) ;
  • Kang, Misook (Department of Chemistry, Yeungnam University)
  • Received : 2012.11.08
  • Accepted : 2012.11.28
  • Published : 2012.12.31
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Abstract

For effectively photochemical hydrogen production, Ti ions (0.01, 0.10, 0.50 mol%) impregnated $WO_3$ ($Ti/WO_3$) nanometer sized particles were prepared using a impregnation method as a photocatalyst. The characteristics of the synthesized $Ti/WO_3$ photocatalysts were analyzed by X-ray diffraction (XRD), scanning electron microscopy (SEM), photoluminescence spectra (PL), atomic force microscope (AFM), and electrostatic force microscope (EFM). The evolution of $H_2$ from methanol/water (1/1) photo-splitting over $Ti/WO_3$ photocatalysts was enhanced compared to those over pure $TiO_2$ and $WO_3$ photocatalysts; 3.02 mL of $H_2$ gas was evolved after 8 h when 0.5 g of a 0.10 mol% $Ti/WO_3$ catalyst was used.

본 연구에서는 보다 효율적인 광 전기화학적 수소제조를 위하여 광촉매로써 산화텅스텐에 티타늄을 함침하여 $Ti/WO_3$ 나노입자를 제조하였다. 제조한 $Ti/WO_3$의 물리적 특성은 X-선 회절분석법(XRD), 주사전자현미경(SEM), 발광분광계(PL), 원자간력 현미경(AFM), 정전기 현미경(EFM)을 통해 확인하였다. 메탄올/물 (1/1) 광분해 수소제조 실험 결과, 순수 아나타제 티타니아나 산화텅스텐 광촉매보다 $Ti/WO_3$ 광촉매에서 촉매활성이 향상되었으며, 0.5 g의 0.10 mol % $Ti/WO_3$ 촉매를 사용한 경우 8시간 반응 시 3.02 mL의 수소가 발생되었다.

Keywords

References

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