GO@P-g-C_(3)N_(4)复合光催化材料的制备及其抗菌性能  

Preparation and antibacterial properties of GO@P-g-C_(3)N_(4)composite photocatalytic material

作　　者：张雪婷 高晓红[1] 杨旭礼 包育闻 王梁宇 ZHANG Xueting;GAO Xiaohong;YANG Xuli;BAO Yuwen;WANG Liangyu(School of Textile and Clothing,Nantong University,Nantong 226019,China)

机构地区：[1]南通大学纺织服装学院,南通226019

出　　处：《复合材料学报》2025年第2期900-911,共12页Acta Materiae Compositae Sinica

基　　金：江苏省大学生创新创业训练计划项目(202310304117Y);江苏省青年基金(BK20210834)。

摘　　要：通过静电自组装法制备了质子化石墨相氮化碳(P-g-C_(3)N_(4))涂层的氧化石墨烯(GO)复合材料(GO@Pg-C_(3)N_(4)),探究其在光催化抗菌方面的应用。通过SEM、TEM、XRD、XPS、Raman、UV-Vis DRS、稳态/瞬态荧光光谱(PL)等对GO@P-g-C_(3)N_(4)复合材料的微观形貌、晶态结构及光电性能进行表征,并通过调控P-g-C_(3)N_(4)的含量对GO@P-g-C_(3)N_(4)复合材料进行了结构优化。在模拟太阳光照射条件下,以大肠杆菌(E.coli)和金黄色葡萄球菌(S.aureus)为实验对象,研究了不同P-g-C_(3)N_(4)含量的GO@P-g-C_(3)N_(4)复合材料的光催化抗菌性能及光照时间对抗菌性能的影响。结果表明:GO与P-g-C_(3)N_(4)以质量比为1∶4合成的GO@P-g-C_(3)N_(4)-80%复合材料,光照100 min后,对E.coli和S.aureus的抑菌率分别为98.80%和95.99%;光照150 min后,对E.coli和S.aureus的抑菌率均达到99%以上,抗菌性能显著优于GO与P-g-C_(3)N_(4)。A protonated graphite carbon nitride(P-g-C_(3)N_(4))coated graphene oxide(GO)composite material(GO@Pg-C_(3)N_(4))was prepared via electrostatic self-assembly method,and its application in photocatalytic antibacterial activities was investigated.The micro morphologyies,crystalline structures,and photoelectric properties of the GO@P-g-C_(3)N_(4)composite material were characterized by SEM,TEM,XRD,XPS,Raman,UV-Vis DRS and steadystate/transient fluorescence spectroscopy(PL),etc.The structure of GO@P-g-C_(3)N_(4)composite material was optimized by adjusting the content of P-g-C_(3)N_(4).Under simulated solar light irradiation conditions,E.coli and S.aureus were used as experimental targets to study the photocatalytic antibacterial performance of GO@P-g-C_(3)N_(4)composites with different P-g-C_(3)N_(4)contents and the influence of irradiation times on antibacterial performance.It was found that GO@P-g-C_(3)N_(4)-80% composite material synthesized with a mass ratio of 1∶4 between GO and P-g-C_(3)N_(4)exhibited antibacterial rates against E.coli and S.aureus of 98.80% and 95.99%,respectively after 100 min of illumination.After 150 min of illumination,antibacterial rates against both E.coli and S.aureus exceeded 99%,demonstrating significantly better antibacterial performance compared to individual GO or P-g-C_(3)N_(4).

关 键 词：氧化石墨烯 P-g-C_(3)N_(4) 复合材料 光催化 抗菌性能 

分 类 号：O611.62[理学—无机化学] TB332[理学—化学]