TY - JOUR
T1 - Inducing photocatalysis by visible light beyond the absorption edge
T2 - Effect of upconversion agent on the photocatalytic activity of Bi2WO6
AU - Zhang, Zhijie
AU - Wang, Wenzhong
AU - Yin, Wenzong
AU - Shang, Meng
AU - Wang, Lu
AU - Sun, Songmei
N1 - Funding Information:
We acknowledge the financial support from the National Natural Science Foundation of China ( 50972155 , 50732004 ), National Basic Research Program of China ( 2010CB933503 ) and the Nanotechnology Programs of Science and Technology Commission of Shanghai ( 0952nm00400 ).
PY - 2010/11/22
Y1 - 2010/11/22
N2 - In order to harvest the solar energy more efficiently, Bi2WO6 photocatalysts doped with Er3+ were synthesized, in which Er3+ with upconversion properties could transform visible light beyond the absorption edge of Bi2WO6 into ultraviolet light and activate Bi2WO6. The photocatalytic activities of the photocatalysts were evaluated by the decolorization of rhodamine B (RhB) and the degradation of a typical colorless model pollutant, phenol under simulated solar light irradiation (λ>290nm). The results showed that the photocatalytic activity of Er3+-doped Bi2WO6 was much higher than the undoped one. In addition, Er3+-doped Bi2WO6 exhibited photocatalytic activity under a 3W LED with the wavelength beyond the absorption edge of Bi2WO6, further testifying the upconversion effect of Er3+ on the enhanced photocatalytic activity of Bi2WO6.
AB - In order to harvest the solar energy more efficiently, Bi2WO6 photocatalysts doped with Er3+ were synthesized, in which Er3+ with upconversion properties could transform visible light beyond the absorption edge of Bi2WO6 into ultraviolet light and activate Bi2WO6. The photocatalytic activities of the photocatalysts were evaluated by the decolorization of rhodamine B (RhB) and the degradation of a typical colorless model pollutant, phenol under simulated solar light irradiation (λ>290nm). The results showed that the photocatalytic activity of Er3+-doped Bi2WO6 was much higher than the undoped one. In addition, Er3+-doped Bi2WO6 exhibited photocatalytic activity under a 3W LED with the wavelength beyond the absorption edge of Bi2WO6, further testifying the upconversion effect of Er3+ on the enhanced photocatalytic activity of Bi2WO6.
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U2 - 10.1016/j.apcatb.2010.09.008
DO - 10.1016/j.apcatb.2010.09.008
M3 - Article
AN - SCOPUS:78049426441
SN - 0926-3373
VL - 101
SP - 68
EP - 73
JO - Applied Catalysis B: Environmental
JF - Applied Catalysis B: Environmental
IS - 1-2
ER -