MoS2/ZnO异质结纳米材料降解亚甲基蓝的光催化性能研究OACSTPCD
Photocatalytic properties of MoS2/ZnO heterojunction nanomaterials for degradation of methylene blue
为了提高ZnO的光转换效率,选用带隙较低的MoS2 形成异质结提高ZnO的光催化性能.通过水热法制备ZnO纳米棒,并进一步制备 MoS2/ZnO异质结构的纳米复合材料.通过扫描电镜(SEM)、X射线粉末衍射仪(XRD)、固体紫外可见漫反射测试仪(UV-Vis)和紫外可见分光光度计(UV-245)等分析方法对样品的形貌、结构及光学性能等进行表征.结果表明,MoS2/ZnO异质结复合材料呈棒状结构,并由于内建电场存在可有效增强光生载流子的分离效率,进而提高了可见光区的吸收,提高了光催化性能.在模拟太阳光(包含紫外波段)下,60 min时MoS2-15/ZnO纳米复合材料对亚甲基蓝的降解率可达99%,比纯ZnO的降解率提高了10%.
In order to improve the ZnO light conversion efficiency,the heterojunction of MoS2 with low band gap was selected to improve the photocatalytic performance.ZnO nanorods were prepared by hydrothermal method,and MoS2/ZnO heterostructure nanocomposites were further prepared.The morphology,structure,and optical properties of the samples are characterized by scanning electron microscopy(SEM),X-ray powder diffracmeter(XRD),UV-Visible solid dif-fuse reflection tester(UV-Vis),and ultraviolet-visible spectrophotometer(UV-245).The re-sults show that the MoS2/ZnO heterostructure nanocomposite exhibited a rod-like structure,and the presence of a built-in electric field can effectively enhance the separation efficiency of photoge-nerated charge carriers,increase absorption in the visible light region,and thus improve the pho-tocatalytic performance.Under simulated sunlight(including UV band),the degradation rate of methylene blue by MoS2-15/ZnO nanocomposites reached 99%,which is 10%higher than that of pure ZnO after 60 min.
王进美;蒋守杰;王春霞;王丽丽;高大伟
西安工程大学 纺织与材料学院,陕西 西安 710048西安工程大学 纺织与材料学院,陕西 西安 710048||盐城工学院 纺织服装学院,江苏 盐城 224051盐城工学院 纺织服装学院,江苏 盐城 224051盐城工学院 纺织服装学院,江苏 盐城 224051盐城工学院 纺织服装学院,江苏 盐城 224051
轻工业
MoS2/ZnO光催化异质结亚甲基蓝纳米复合材料
MoS2/ZnOphotocatalystheterojunctionmethylene bluenanocomposites
《西安工程大学学报》 2024 (1)
24-30,7
江苏省产学研合作项目(BY2022509)盐城工学院研究基金(xjr2020009)
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