Zeolite NaY-mediated oxidation of dyes with H_2O_2: unique heterogeneous non-transition metal center cleavage of H_2O_2 under visible light irradiation  

作　　者：LIU LiLi1, MA WanHong1, SONG WenJing1, CHEN ChunCheng1, LIN Jun2, ZHAO JinCai1, QIAN XinHua3 & ZHANG ShiBo3 1 Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, China 2 Department of Chemistry, Renmin University of China, Beijing 100872, China 3 Fushun Petrochemical Company, PetroChina Company Limited, Fushun 113008, China 

出　　处：《Science China Chemistry》2007年第6期770-775,共6页中国科学（化学英文版）

基　　金：Supported by the 973 Program of China (Grant No. 2003CB415006);the National Natural Science Foundation of China (Grant Nos. 20520120221, 20537010, 50436040, 20371048, 20407016);the Chinese Academy of Sciences

摘　　要：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 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.

关 键 词：photooxidation  zeolite NaY  dye  hydrogen peroxide  visible light 

分 类 号：O643.36[理学—物理化学]