F掺杂膨润土负载PbSnO<sub>3</sub>复合光催化剂的制备及对亚甲基蓝的光催化降解性能

F掺杂膨润土负载PbSnO₃复合光催化剂的制备及对亚甲基蓝的光催化降解性能

摘要: 以NH₄F为氟源、膨润土为载体,采用水热合成法制备出了F掺杂膨润土负载PbSnO₃复合光催化剂.采用XRD、IR、SEM等分析手段对样品的形貌和结构进行了表征.并在可见光条件下,以亚甲基蓝溶液作为目标降解物,研究了其光催化性能.结果表明:当光照时间为12 min、F掺杂质量分数为0.04%、光催化剂用量为40 mg/L时,其对亚甲基蓝溶液降解效率最高,降解率超过97%.

Abstract: Photocatalysts of fluorine/bentonite/PbSnO₃ composite photocatalysts were prepared by hydrothermal method. The morphology and structure of the samples were characterized by XRD、IR and SEM. Its photocatalytic activity for the degradation of methyl blue was also investigated under visible light irradiation. The results indicated that the photo-degradation efficiency could reach over 97% when the fluorine-doping ratio was 0.04%, the amount of photocatalysts was 40 mg/L, and the reaction time was 12 min.