银-氧化亚铜/壳聚糖/石墨相氮化碳的制备及其光催化抗菌性能  

Synthesis and characterization of Ag-Cu_(2)O/CTS/g-C_(3)N_(4) and it’s photocatalytic antibacterial performance

作　　者：秦礼平 饶邵盛 高帅[1] 杨娟[1] Qin Liping;Rao Shaosheng;Gao Shuai;Yang Juan(School of Materials science and Engineering,Jiangsu University,Zhenjiang 212013)

机构地区：[1]江苏大学材料科学与工程学院,镇江212013

出　　处：《化工新型材料》2021年第7期102-106,110,共6页New Chemical Materials

基　　金：国家自然科学基金(51572114)。

摘　　要：利用壳聚糖改性石墨相氮化碳(g-C_(3)N_(4))作为基体材料,以抗坏血酸为还原剂,以三水硝酸铜Cu(NO_(3))_(2)·3H_(2)O和硝酸银(AgNO_(3))为原料,采用水热法和微波法,依次将氧化亚铜和银纳米颗粒负载于g-C_(3)N_(4)表面,利用Ag和Cu_(2)O的协同作用,获得具有可见光抗菌性能的银和氧化亚铜负载石墨相氮化碳(Ag-Cu_(2)O/CTS/CN)复合材料。通过测定最小杀菌浓度(MBC)和最低抑菌浓度(MIC)考察不同银铜元素含量比对材料抗菌性能的影响。结果发现:在可见光照射条件下,Ag-Cu_(2)O/CN(1∶2)复合抗菌材料表现出最好的光催化活性和抗菌性能,MIC100%Ag=7.78×10-6,MBC100%Ag=3.89×10^(-6),在减少纳米银使用量的同时实现了可见光照射下的高效抗菌。Graphite carbon nitride was modified by chitosan as matrix material.Ag-Cu_(2)O/Chitosan/g-C_(3)N_(4)(Ag-Cu_(2)O/CTS/CN)was prepared by using ascorbic acid as reducing agent,Cu(NO_(3))_(2)·3H_(2)O,AgNO_(3),as raw materials via hydrothermal and microwave method.Antibacterial property was investigated by the testing of minimum bactericidal concentration(MBC)and minimum inhibitory concentrations(MIC).The effect of different proportion of silver and copper content on the photocatalytic and antibacterial properties were discussed.It was found that the AgCu_(2)O/CTS/CN(1∶2)showed best photocatalytic activity and antibacterial performance under visible light,with MIC100%Ag of 7.78×10^(-6) and MBC100%Ag of 3.89×10^(-6).Better antibacterial performance was obtained by decreasing the content of silver.

关 键 词：石墨相氮化碳 氧化亚铜 银纳米颗粒 壳聚糖 光催化 抗菌性能 

分 类 号：TB321[一般工业技术—材料科学与工程]