Abstract
A facile hydrothermal method is developed to prepare hierarchical dahlia-like SnO2 nanostructures (HDSNs). They have been successfully synthesized without using any templates or surfactants. We find that the hierarchical architectures of SnO2 are assembled by a number of regular-shaped nanosheets and nanoparticles, which are cross-linked in the interior of the micro-flower. Based on the nucleation and self-assembly process, a possible formation mechanism is proposed. The effect of NaCl on the product is also studied. In addition, the product exhibits excellent photocatalytic activity to Rhodamine B (RhB) aqueous solution and possess good stability and reusability under visible light. This study will provide valuable experimental data for further study of nanomaterials and their photocatalytic properties.
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