Zeolite NaY-mediated oxidation of dyes with H_2O_2: unique heterogeneous non-transition metal center

• 出 处: Science in China(Series B:Chemistry)
• 发表日期: 2007年06期
• 关键词: irradiation visible zeolite heterogeneous catalysis topology powerful cleavage a

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.

This study investigated the visible-light catalysis mediated by zeolite NaY on the oxidation of dyes with H2O2. The results said that zeolite NaY acts as a sink for the electron from the photo-excited dye in the heterogeneous catalysis. 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 zeolite on the oxidation of various dyes were also shown.