PbMoO4微晶的水热合成及光催化性能

以钼酸铵、硝酸铅为原料,采用水热法合成了纳米PbMoO₄光催化剂,并采用光还原处理对其进行表面载Ag修饰。借助X-射线粉末衍射（XRD）、扫描电镜（FE-SEM）和紫外-可见吸收光谱（UV-Vis）等测试手段对样品进行表征,并以罗丹明B为模型污染物,考察了纳米PbMoO₄光催化剂的催化活性,研究了样品的制备条件和表面载银对催化剂活性的影响。XRD分析结果表明,所得样品为四方晶系结构,且产物纯度高;样品的形貌分析和光催化活性实验结果表明,水热体系的pH值对产物的形貌和活性影响显著,且表面载银可显著提高催化剂的可见光催化活性。

Synthesis and Photocatalytic Activity of PbMoO4 Microcrystals by Hydrothermal

PbMoO₄ microcrystals were synthesized by a hydrothermal method by Pb（NO₃）₂ and （NH₄）₆Mo₇O₂₄·4H₂O as raw materials,the surface of which was loaded the modified Ag by light reduction treatment,and characterized by X-ray diffraction（XRD）,field emission scanning electron microscope（FE-SEM） and UV-Vis techniques.Rhodamine B was selected as a model pollutant,and the photocatalytic activity of PbMoO₄ photochemical catalyst was studied,and the preparation conditions and effects of loaded Ag on the photocatalytic activity was investigated.XRD results indicated that the obtained samples belonged to tetragonal crystal system with high purity.FE-SEM images and photodegradation experiment result showed that the pH value of hydrothermal system on the feature and activity of product has obvious effect.The surface loaded Ag can enhance the visiblelight photocatalytic activity of catalyst.