【摘要】 卤氧化铋系列光催化剂以可见光催化效率高、原料易得和性能稳定等特点得到广泛的研究,直接应用于实际水体污染的原位修复由于其比重较大,所以存在太阳光利用率低和催化剂无法重复使用的问题。以轻质载体为基础负载制备的漂浮型卤氧化铋光催化剂,可以同时解决以上2个方面的问题,因而得到人们的关注。该文总结了近年来卤氧化铋漂浮型光催化剂研究的最新成果,主要介绍了不同轻质载体负载卤氧化铋的制备方法,如溶剂热法、醇盐水解法和冷冻干燥法等,重点概述了制备工艺对复合光催化材料结构及其催化性能的影响,并对光催化机理进行了简要的归纳。在此基础上,展望了漂浮型卤氧化铋光催化剂的发展方向,为卤氧化铋基光催化剂的实际应用提供参考。更多还原

【Abstract】 Due to the high visible light photocatalytic ability, accessible raw materials and stable performance, bismuth oxyhalide photocatalysts have attracted much attention. Caused by large density of bismuth oxyhalide, the low utilization of sunlight and lacking of recycling performance have hindered the application toward the in-situ remediation of water pollution directly. The floating bismuth oxyhalide photocatalyst based on light-weight support can solve the above two problems simultaneously, which has aroused people’s great interesting. In this paper, the recent research progress of floating bismuth oxyhalide photocatalysts was summarized, including the fabrication methods such as solvothermald, alkoxide hydrolysisd and freeze-drying. The relations between the preparation and the structure of composite photocatalyst which impacts photocatalytic performance were emphatically discussed. The photocatalytic mechanisms were summarized briefly. On this basis, the development of floating bismuth oxyhalide photocatalyst was prospected, which provides a reference for the practical application of bismuth oxyhalide photocatalyst.更多还原