碱土金属铁酸盐/g-C_3N_4复合材料的制备及吸光性能研究  

Study on Preparation of Alkaline Earth Metal Ferrite/g-C_3N_4 Composites and Its Light Absorption Activities

作　　者：王欢 薄丽丽[1] 李斌 张志霞[1] WANG Huan;BO Li-li;LI Bin;ZHANG Zhi-xia(College of Science Gansu Agricultural University,Gansu Lanzhou 730070,China)

机构地区：[1]甘肃农业大学理学院,甘肃兰州730070

出　　处：《广州化工》2018年第21期70-71,91,共3页GuangZhou Chemical Industry

基　　金：甘肃农业大学省级大学生创新创业训练计划项目(No:201710733064)

摘　　要：采用溶胶-凝胶自蔓延燃烧法制备了碱土金属尖晶石铁酸盐MFe_2O_4(M=Mg、Ca、Ba),并通过超声混合并研磨的方法将其与石墨相氮化碳(g-C_3N_4)复合,制备MFe_2O_4/C_3N_4复合材料,并对样品进行了X-射线粉末衍射(XRD)、红外吸收光谱(FT-IR)、透射电子显微镜(TEM),紫外-可见漫反射等表征。结果表明,所制备的复合材料呈尖晶石结构,MFe_2O_4与C_3N_4有效复合,与单一的g-C_3N_4相比较,所制备MFe_2O_4/C_3N_4复合材料对可见光的吸收性能得到了很大提高,有望作为高活性的可见光催化剂。Alkaline earth metal ferrites MFe2O4 （M = Mg, Ca, Ba）were prepared by sol-gel self-propagating combustion method. The composites of MFe2O4/g-C3N4 were simply synthesized by ultrasonic and grind the mixture of MFe204 and g-C3N4. The as-prepared catalysts were well characterized by X-ray diffraction （XRD） , Fourier transform infrared spectroscopy （FT- IR ）, transmission electron microscopy （TEM） and diffuse reflectance UV- visible spectroscopy. The results showed that the composites exhibited greatly improved absollotion to visible light compared to the pristine g-C3N4 and it can act as potential visible driven photocatalytic catalysts.

关 键 词：MFe2O4/C3N4 可见光吸收 光催化剂 

分 类 号：O643.36[理学—物理化学] TB33[理学—化学]