Photocatalytic debromination of decabromodiphenyl ether by graphitic carbon nitride  

作　　者：SUN ChunYan CHEN ChunCheng MA WanHong ZHAO JinCai 

机构地区：[1]College of Chemistry Shaoxing University,Shaoxing 312000,China [2]Beijing National Laboratory for Molecular Sciences,Key Laboratory of Photochemistry,Institute of Chemistry,Chinese Academy of Sciences,Beijing 100190,China

出　　处：《Science China Chemistry》2012年第12期2532-2536,共5页中国科学（化学英文版）

基　　金：supported by the National Natural Science Foundation of China(21107073,20920102034,21137004);the Natural Science Foundation of Zhejiang Province(Y5110347)

摘　　要：The graphitic carbon nitride(g-C3N4) is found to be an efficient photocatalyst for the reductive degradation of decabromodiphenyl ether(BDE209) under UV irradiation(>360 nm).g-C3N4 was prepared by heating dicyandiamide.X-ray diffraction,X-ray photoelectron spectroscopy,and UV-vis spectra were used to characterize the properties of as-prepared catalysts.The photoreductive degradation kinetics of BDE209 was further investigated under different reaction conditions.The degradation of BDE209 is a stepwise process,and the bromines at meta positions are much more susceptible to remove than those at the ortho and para positions.A possible photoreductive mechanism was also proposed.The graphitic carbon nitride （g-C3N4） is found to be an efficient photocatalyst for the reductive degradation of decabromodiphenyl ether （BDE209） under UV irradiation （〉360 nm）. g-C3N4 was prepared by heating dicyandiamide. X-ray diffraction, X-ray photoelectron spectroscopy, and UV-vis spectra were used to characterize the properties of as-prepared catalysts. The photoreductive degradation kinetics of BDE209 was further investigated under different reaction conditions. The degradation of BDE209 is a stepwise process, and the bromines at meta positions are much more susceptible to remove than those at the ortho and para positions. A possible photoreductive mechanism was also proposed.

关 键 词：PHOTOREDUCTION BDE209 g-C3N4 environmental pollution 

分 类 号：O484[理学—固体物理] TQ325.2[理学—物理]