离子交换法制备纳米ZnO及其光催化性能

Preparation of Nanometer Zinc Oxide by Ion-Exchange Resin Method and Its Photocatalytic Activity

以可再生201×7型阴离子交换树脂为构晶离子的供体,与一定浓度的ZnSO4溶液,在搅拌条件下反应一定时间,制备纳米ZnO,并利用扫描电镜、微机差热天平及紫外-可见分光光度计对产物进行了表征,同时考察了纳米ZnO的光催化性.结果表明,离子交换法制备的纳米ZnO对有机物、有色废水等具有很强的光催化性.

Nanometer zinc oxide was prepared by recycling zinc ion-exchange resins which acted as suppliers for ions composing crystal and a certain concentration of zinc sulfate solution were mixed and reacted at certain temperature for a given time with stirring. The products were characterized by SEM, differential thermal balance and UV-Vis spectrophotometer, and the photocatalytic activity of the nanometer zinc oxide was investigated. The results show that the nanometer zinc oxide had strong photocatalytic activity on organic compound and colored wastewater.