染料敏化的石墨相氮化碳的合成及其光催化性能研究  

Synthesis and Photocatalytic Properties of the dye-sensitized graphitic carbon nitride

作　　者：曹鑫[1] 杨振[1] 张慧[1] 孙建华[1] 

机构地区：[1]江苏理工学院化学与环境工程学院,江苏常州213001

出　　处：《江苏理工学院学报》2016年第4期25-28,共4页Journal of Jiangsu University of Technology

基　　金：国家自然科学基金(21373103);国家自然科学基金(21401083);江苏省"六大人才高峰"项目(2013-XNY-008)

摘　　要：以尿素为前驱体,通过热诱导自聚合制备了石墨相氮化碳(g-C_3N_4),然后将染料甲基红(MR)与g-C_3N_4键合,合成了染料敏化的复合光催化剂MR-g-C_3N_4,并以甲基橙(MO)为模型污染物,探讨了MR敏化对其光催化活性的影响。实验结果表明:通过MR敏化能拓宽g-C_3N_4对可见光的吸收,提升其对可见光的吸收效率,从而提高其对MO的降解效率。A graphitic carbon nitride （g-C3N4） was prepared from the condensation of urea. And subsequently, a polymeric photocatalyst was synthesized by coupling methyl red （MR） onto g-C3N4. The photocatalytic activity of this as-prepared photocatalyst （MR-g-C3N4） was evaluated by using methyl orange as a model pollutant under Hg-lamp irradiation. MR-g-C3N4 was characterized by XRD, UV-vis spectra and FT-IR spectra, which indicated that MR-g-C3N4 can broaden the absorption of visible light and enhance the absorption efficiency of visible light through MR sensitization. The results indicate MR-g-C3N4 has a higher photocatalytic performance than g-C3N4.

关 键 词：氮化碳 光催化 氧化降解 染料敏化 

分 类 号：O643[理学—物理化学]