摘要
本实验制备了一种Z型含氮缺陷的石墨相氮化碳(LaFeO_(3)/CQDs-g-C_(3)N_(x))复合光催化剂。利用X射线衍射(XRD)、紫外-可见光漫反射(UV-Vis DRS)、光致发光光谱(PL)、扫描电镜(SEM)、透射电镜(TEM)以及X射线光电子能谱(XPS)等手段对催化剂进行了表征。结果表明,氮缺陷和CQDs的引入能增强光生载流子的迁移效率。LaFeO_(3)/CQDs-g-C_(3)N_(x)复合材料对罗丹明B(RhB)的光催化降解率是纯g-C_(3)N_(4)的3.98倍,并具有良好的光催化稳定性。同时对抗生素和其他有机污染物也表现出良好的降解能力。
In this experiment,a Z-scheme nitrogen-deficient graphite-phase carbon nitride(LaFeO_(3)/CQDs-g-C_(3)N_(x))composite photocatalyst was prepared.The catalyst was characterized by X-ray diffraction(XRD),ultraviolet-visible diffuse reflection(UV-Vis DRS),photoluminescence spectroscopy(PL),scanning electron microscopy(SEM),transmission electron microscopy(TEM)and X-ray photoelectron spectroscopy(XPS).The results showed that the introduction of nitrogen defects and CQDs enhanced the migration efficiency of photogenerated carriers.The photocatalytic degradation rate of LaFeO_(3)/CQDs-g-C_(3)N_(x)composites for rhodamine B(RhB)was 3.98 times higher than that of pure g-C_(3)N_(4),and had good photocatalytic stability.It also showed good degradation of antibiotics and other organic pollutants.
作者
王祎迪
孙有为
周峰
马会霞
王彦娟
胡绍争
张健
WANG Yi-di;SUN You-wei;ZHOU Feng;MA Hui-xia;WANG Yan-juan;HU Shao-zheng;ZHANG Jian(School of Petrochemical Eneineering,Liaoning Petrochemical University,Fushun 113001,China;Dalian Research Institute of Petroleum and Petrochemicals,SINOPEC,Dalian 116000,China)
出处
《燃料化学学报（中英文）》
EI
CAS
CSCD
北大核心
2023年第2期215-224,共10页
Journal of Fuel Chemistry and Technology
基金
辽宁省科技厅面上项目(2021-MS-308)
辽宁省教育厅项目(L2020016)资助。
关键词
Z型异质结
氮缺陷
碳量子点
光催化
Z-scheme heterojunction
nitrogen defects
carbon quantum dots
photocatalysis
