Nanoporous ZnO nanostructures for photocatalytic degradation of organic pollutants

摘要

ZnO porous bamboo-leave-like nanorods and nanoporous networks were prepared by thermal conversion from Zn_2CO_3(OH)_2·H_2O bamboo-leave-like nanorods, Zn(OH)_2 nanoparticle networks and Zn(OH)_2 long nanostrand networks, respectively. Among them, the ZnO nanoporous networks prepared from Zn(OH)_2 nanostrands had the highest surface area of 78.57 m~2/g and presented the best photocatalytic decomposition of organics. The morphologies of the Zn(OH)_2 nanostructures significantly depended on the solvent used for the precursors of aminoethanol and Zn(NO_3)~2 and then determined the corresponding structures and properties of the final ZnO nanostructures. The ethanol/water mixture solvent dramatically increased the stability of Zn(OH)_2 nanostrands. This is very beneficial for the collection and application of Zn(OH)_2 nanostrands.