pH值对多酸基晶态材料制备的影响及性质研究

Research on effect and properties of pH on the preparation of polyacid-based crystalline materials

使用Keggin型多磷钨酸钠和醋酸锌为反应物,在水热法下通过调节pH值形成了2个具有不同形貌(如片状、块状)的多酸基晶态材料磷钨酸锌,并采用X-射线粉末衍射、傅里叶红外、光电子能谱仪及场发射扫描电子显微镜等方法对样品的结构和组成进行表征.以甲基橙为催化降解对象,对样品在其水溶液中的光催化性质进行了研究.结果表明,所合成的尺寸较小具有长方体形状样品1^#对污水中的甲基橙具有潜在的催化降解能力.

Two kinds of POM-based materials(ZnHPW12O40)with different morphology were prepared by adjusting pH under hydrothermal condition in present of Na2HPW12O40 and(Zn(OAC)2)as main raw materials,with deionized water as solvent.The sample was characterized by XRD,FT-IR,XPS,SEM.The photocatalytic property of title compounds are investigated by using methyl orange as the object of study.The result suggests that the 1#with small dimensions cuboids shape exhibits excellent photocatalytic activity and potential application in the degradation of organic of MO in the pollute water.