溶剂热法制备ZnOHF微/纳米晶:锌源的影响

Solvothermal Synthesis of ZnOHF Micro/Nanocrystals: Effect of Zinc Ion Source

采用ZnSO4∙7H2O,Zn(NO3)2∙6H2O,Zn(OAc)2和ZnCl2作为Zn2+源,通过DMF辅助溶剂热法,制备了具有不同的形貌的(蛋挞状、海星状、盘、线) ZnO和ZnOHF。在紫外光照射下,研究了不同产物对罗丹明B溶液的光催化性质,发现RhB的降解率遵循如下顺序:蛋挞状ZnO > ZnO纳米盘 > ZnOHF纳米线 > 海星状ZnOHF,表明了罗丹明B的降解效率与产物的形貌之间存在明确的构效关系。

ZnSO4∙7H2O, Zn(NO3)2∙6H2O, Zn(OAc)2 and ZnCl2 were adopted as Zn2+ sources to synthesize ZnO or ZnOHF with different morphologies (hierarchical cake-like microstructures, starfish-like microstructures, nanodisks, and nanowires) via a simple DMF-assisted solvothermal route. The photocatalytic properties of the products were investigated by the degradation of RhB aqueous solution under UV-light irradiation. The degradation efficiency for different morphological ZnO and ZnOHF follow the order of hierarchical cake-like ZnO ZnO nanodisks ZnOHF nanowires starfish-like ZnOHF, indicating strong shape-dependent photocatalysis behaviors.