磷酸银复合材料在催化及抗菌方面的研究进展

Progress on Catalysis and Antimicrobial Activity of Silver Phosphate Composites

综述了磷酸银复合材料在化学及相关领域的研究,主要集中在光催化降解污染物、环境药物、杀菌消毒和光解水等方面。光催化在降解污染物方面,尤其是在降解有机染料方面表现突出,如罗丹明B溶液、亚甲基蓝溶液等;光催化降解环境药物方面,磷酸银复合材料对阿拉特津、甲磺酸吉米沙星等药物的降解率可达到90%以上;抗菌性能方面,磷酸银对大肠杆菌有较强的抑制作用,对金黄色葡萄球菌也有一定的抑制作用。简单说明了磷酸银光催化的原理,磷酸银带隙较窄,价电子激发后产生光生电子-空穴对,光生空穴具有强氧化性,光生电子则具有强还原性,迁移到磷酸银的表面后,参与物质的氧化还原反应。最后对磷酸银的改进方法和发展前景进行了总结。

In this paper,the research on the chemical and related fields of silver phosphate composite materials was reviewed,mainly focusing on the photocatalytic degradation of pollutants,environmental drugs,sterilization and photolysis water,etc.The photocatalytic degradation of pollutants has showed good activity,especially in the area of degradation of organic dyes,such as rhodamine B and methylene blue solution;In terms of photocatalytic degradation of environmental drugs,the degradation rate of alatzin,jimisacin mesylate and other drugs by silver phosphate composite materials can reach more than 90%.In terms of antibacterial properties,silver phosphate has a strong inhibitory effect on escherichia coli,and also has a certain inhibitory effect on staphylococcus aureus.The principle of photocatalysis of silver phosphate is simply explained:Silver phosphate has a narrow band gap,and the valence electrons excite to produce photogenic electron-hole pairs.The photogenic holes have strong oxidization,while the photogenic electrons have strong reducibility.After migrating to the surface of silver phosphate,the photogenic electrons participate in the redox reaction of the substance.Finally,the improvement methods and development prospects of silver phosphate are summarized.