ZnO/V_(2)C/Fe_(2)O_(3)三元复合材料的制备及其对MB的光降解性能  

Preparation and photodegradation properties of ZnO/V_(2)C/Fe_(2)O_(3)ternary composites for MB

作　　者：周卫兵[1] 向世桥 孙李龙 李康 ZHOU Weibing;XIANG Shiqiao;SUN Lilong;LI Kang(School of Materials Science and Engineering,Wuhan University of Technology,Wuhan 430070,China)

机构地区：[1]武汉理工大学材料科学与工程学院,武汉430070

出　　处：《功能材料》2024年第6期6035-6043,6061,共10页Journal of Functional Materials

基　　金：国家自然科学基金面上项目(51772229)。

摘　　要：采用高效催化剂技术可以处理工业废水中的污染物,而单相催化剂存在可见光响应范围窄的问题。通过静电自组装的方法制备ZnO/V_(2)C/Fe_(2)O_(3)三元光催化复合材料,利用X射线衍射(XRD)、扫描电子显微镜(SEM)、X射线光电子能谱(XPS)等分析技术对复合材料进行表征,并以亚甲基蓝(MB)染料为目标污染物,研究三元复合物的光催化性能。在紫外光和可见光分别照射120 min后,ZnO/V_(2)C/Fe_(2)O_(3)三元复合材料对MB染料的降解速率分别是纯ZnO的19.68倍和21.76倍。在复合Fe_(2)O_(3)和V_(2)C后,缩短了ZnO禁带宽度,激发响应范围到可见光区域,有更大的比表面积和更多的反应活性位点,从而使ZnO的光催化性能增强。High efficiency catalyst technology can be used to treat pollutants in industrial wastewater,but single-phase catalyst has the problem of narrow response range of visible light.In this paper,ZnO/V_(2)C/Fe_(2)O_(3) ternary photocatalytic composites were prepared by electrostatic self-assembly,and characterized by X-ray diffraction(XRD),scanning electron microscopy(SEM)and X-ray photoelectron spectroscopy(XPS).Methylene blue dye was used as the target pollutant to study the photocatalytic performance of the ternary composite.The degradation rate of MB dye by ZnO/V_(2)C/Fe_(2)O_(3) ternary composite is 19.68 times and 21.76 times that of pure ZnO after 120 min irradiation with UV light and visible light,respectively.After the composite Fe_(2)O_(3) and V_(2)C,the band gap of ZnO is shortened,the excitation response range is extended to the visible region,and there are more specific surface area and more reactive sites,so the photocatalytic performance of ZnO is enhanced.

关 键 词：氧化锌 碳化钒 异质结 光催化性能 亚甲基蓝 

分 类 号：TB332[一般工业技术—材料科学与工程]