Mosaic structure ZnO formed by secondary crystallization with enhanced photocatalytic performance

• 作者: Hai-xia Liu Meng-yuan Teng Xu-guang Wei Tian-duo Li Zai-yong Jiang Qing-fen Niu Xu-ping Wang
• 来源期刊: 矿物冶金与材料学报
• 年，卷（期）: 2021,（3）
• 页码范围: 495-502
• 页数: 8页
• 语种: 英文

摘要

Zinc acetate is used as a raw material to synthesize the desired ZnO in hot solvent by controlling the amount of citric acid (CA) ad-ded. Notably, the amount of CA added has a significant relationship with the control of the morphology of ZnO. Spherical ZnO wrapped in nanosheets is synthesized through the secondary crystallization of Zn2+. The optical properties of the ZnO sample are tested through the de-gradation of organic pollutants. Notably, the photocatalytic properties of ZnO vary with the different amounts of CA added. Exposure of the active crystal face increases the photocatalytic activity of ZnO. In addition, the number of defects on the surface of the ZnO sample increases because of its large specific surface area, thus changing the bandgap of ZnO. Therefore, the resulting sample can respond under visible light.