配合物前驱体水热制备纳米氧化锌及其光催化性能研究

Hydrothermal Synthesis of Nanometer Zinc Oxide from Complexes Precursor and Their Photocatalytic Performance

以制备的一维乙酰丙酮锌为前驱体,通过水热合成法得到不同形貌的纳米氧化锌。使用XRD、UVVis、SEM等测试手段对前驱体和产物进行了表征,并研究了产物的光催化性能。研究发现,通过控制水热合成温度、水热时间以及酸碱性,成功合成了棒状、片状的纳米氧化锌,不同形貌的氧化锌光催化性能不同。其中添加NaOH在180℃水热反应4h所得ZnO纳米片光催化性能最好,经氙灯光照射80min,亚甲基蓝溶液的降解率可达98%。

Zinc oxide nanomaterials with different morphologies were prepared by hydrothermal decomposition method using zinc acetylacetonate as precursor.The as-prepared precursor and products were characterized by XRD,UV-Vis and SEM,and the photocatalytic performance of different samples were investigated.The experimental results show that the products are pure zinc oxide with rod-like and plate-like shape.The morphologies and photocatalyric performance of the ZnO nanomaterials are influenced by reaction conditions.It is found that ZnO nanoplates prepared at 180 ℃ for 4h in the presence of NaOH displayed the highest photocatalytic activity.Up to 98% methylene blue （MB） was decolorized after light irradiation for 80 min by 500 W Xe-lamp.