Zeolite NaY-mediated oxidation of dyes with H2O2: unique heterogeneous non-transition metal center cleavage of H2O2 under visible light irradiation

This study investigated the visible-light catalysis mediated by zeolite NaY on the oxidation of dyes with H2O2. The results demonstrated that zeolite NaY acts as a sink for the electron from the photo-excited dye in the heterogeneous catalysis. Furthermore, the electron can effectively activate H2O2...

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Bibliographic Details
Published in:Science China. Chemistry 2007-12, Vol.50 (6), p.770-775
Main Authors: Liu, LiLi, Ma, WanHong, Song, WenJing, Chen, ChunCheng, Lin, Jun, Zhao, JinCai, Qian, XinHua, Zhang, ShiBo
Format: Article
Language:English
Subjects:
Catalysis
Ductile-brittle transition
Dyes
Hydrogen peroxide
Light irradiation
Oxidation
Oxidizing agents
Room temperature
Topology
Transition metals
Zeolites
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Summary:This study investigated the visible-light catalysis mediated by zeolite NaY on the oxidation of dyes with H2O2. The results demonstrated that zeolite NaY acts as a sink for the electron from the photo-excited dye in the heterogeneous catalysis. Furthermore, the electron can effectively activate H2O2 to produce ·OH radical that is a powerful oxidant for the oxidation of dye at room temperature. The effects of the framework topology, Si/Al ratio, and exchangeable cation of the zeolite on the oxidation of various dyes were also shown.
ISSN:1006-9291
1674-7291
1862-2771
1869-1870
DOI:10.1007/s11426-007-0138-1