Hydrothermal Synthesis of Novel Hierarchical Flower-Like SnO2 with Enhanced Visible-Light-Driven Photocatalytic Activity

摘要

The novel hierarchical flower-like SnO2 (HFL-SnO2) nanostructures with the diameter of about 500 nm, which are composed of regular-shaped nanosheets, are synthesized with a solvothermal method in the presence of 1 ml of Triethylamine (TEA) and the 0.2 mmol of Hexamethylene tetraamine (HMT) at 160 degrees C for 6 h. The SnO2 has a high specific surface area of about 38.5 m(2)g(-1). Based on the nucleation and self-assembly process, possible formation process of the new hierarchical flower-like nanostructures can be presented. The effects of TEA and HMT on the product are also studied. In addition, the product exhibits excellent photocatalttic activity to Methyl orange (MO) 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.