기계적 합금화법을 이용한 전이금속 도핑에 따른 TiO2 분말의 광촉매 특성
Photocatalytic Behaviors of Transition Metal Ions Doped TiO2 Synthesized by Mechanical Alloying
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Abstract
Transition metal ions(Ni2+, Cr3+ and V5+) doped TiO2 nanostructured powders were synthesized by mechanical alloying(MA) to shift the adsorption threshold into the visible light region. The synthesized powders were characterized by XRD, SEM, TEM and BET for structural analysis, UV-Vis and photoluminescence spectrum for the optical study. Also, photocatalytic abilities were evaluated by decomposition of 4-chlorophenol(4CP) under ultraviolet and visible light irradiations. Optical studies showed that the absorption wavelength of transition metal ions doped TiO2 powders moved to visible light range, which was believed to be induced by the energy level change due to the doping. Among the prepared TiO2 powders, Ni2+ doped TiO2 powders, showed excellent photo-oxidative ability in 4CP decomposition.
참고문헌 (12)
- S.J.Kim, "J. Kor. Inst. Met & Mater", 39, pp.214~ (2001)
- F.Y.Sun, "J. Catal", 19, pp.229~ (1998)
- L.Spanhel, "J. Am, Chem.Soc", 109, pp.6632~ (1984)
- K.R.Gopidas, "J. Phys.Chem", 94, pp.6435~ (1990)
- X.Z.Li, "J. Photoch Photobio. A", 141, pp.209~ (2001)
- R.Asahi, "Science", 293, pp.269~ (2001)
- M.S.Jeon, "Appl. Surf. Sci", 165, pp.209~ (2000)
- J.Yang, "Mater. Res. Bull", 33, pp.389~ (1998)
- H.Yamashita, "J. Synchrotron Rad", 6, pp.451~ (1999)
- D.H.Kim, "J. Alloys & Comp", 375, pp.259~ (2004)
- Md.Mosaddeq-ur-Rahman, "Sol. Energ.Mat. Sol. C", 48, pp.123~ (1997)
- M.Umeno et al, "Mat. Sci & Eng. B", 41, pp.67~ (1996)