摘要
针对石墨相氮化碳(g-C_(3)N_(4))光生电子-空穴复合率高、表面反应活性低等缺点,采用化学沉淀法和高温煅烧法制备得到片层花状氧化锌(ZnO),同时在制备过程中加入g-C_(3)N_(4),得到ZnO-g-C_(3)N_(4)复合材料。可见光下通过降解盐酸四环素(TC)实验结果表明,ZnO-g-C_(3)N_(4)-1:1的降解率是单一g-C_(3)N_(4)的2.37倍。4次循环反应后,其光催化活性基本不变,表明该催化剂稳定性较好。捕获实验表明·O_(2)^(-)和·OH在降解体系中起主要作用。
To address the drawbacks of high photogenerated electron-hole complexation rate and low surface reactivity of graphitic carbon nitride(g-C_(3)N_(4)),the lamellar flower-like zinc oxide(ZnO)was prepared by chemical precipitation method and high temperature calcination,and g-C_(3)N_(4) was added during the preparation process to obtain ZnO-g-C_(3)N_(4) composites.The results of degradation of tetracycline hydrochloride(TC)by visible light showed that the degradation rate of ZnO-g-C_(3)N_(4)-1∶1 was about 2.37 times higher than that of single g-C_(3)N_(4).The photocatalytic activity was basically unchanged after four cycles of reaction,indicating the good stability of the catalyst.The capture experiments indicated that·O_(2)^(-) and·OH played a major role in the degradation system.
作者
张茜
梁海欧
李春萍
白杰
ZHANG Xi;LIANG Haiou;LI Chunping;BAI Jie(School of Chemical Engineering,Inner Mongolia University of Technology,Hohhot 010051,China)
出处
《内蒙古工业大学学报（自然科学版）》
2023年第4期294-301,共8页
Journal of Inner Mongolia University of Technology：Natural Science Edition
基金
国家自然科学基金项目(51772158)。
关键词
复合材料
石墨相氮化碳
光催化
ZNO
composite materials
graphitic carbon nitride
photocatalysis
ZnO
