SnO_2纳米花的水热合成及其光催化性能研究

Hydrothermal Synthesis and Photocatalytic Properties of SnO_2 Nanoflowers

采用简单水热法合成出了成分纯净、形貌良好、光催化性能优良的SnO_2纳米花,并对合成产物进行物相分析、形貌观察、微观结构分析、比表面积测试及光催化性能测试。结果表明:该SnO_2纳米材料形貌均一,呈花形,花片厚度为5 nm左右。合成产物为四方金红石相结构,成分纯净、结晶性好,比表面积大,对亚甲基蓝、甲基橙、罗丹明B、刚果红四种有机染料具有良好的光催化活性,降解时间短,降解率高。该合成产物作为光催化剂具有可重用性。

Large amounts of SnO_2 nanoflowers with pure composition,good morphology and excellent photocatalytic performance were successfully obtained through a simple and effective hydrothermal method. The phase analysis, morphology, microstructure, specific surface area and photocatalytic properties were characterized. The results show that the morphology of SnO_2 nanoflowers are uniform and the thickness of single nanopetal is about 5 nm. The synthesized products are tetragonal rutile structure with high purity,well crystallinity and high specific surface area. The SnO_2 nanoflowers possess excellent photocatalytic activity for methylene blue,methyl orange,rhodamine B,congo red. The degradation time is short and the degradation rate is high. As a photocatalyst,the prepared SnO_2 nanoflowers have reusability.