Graphite carbon nitride was modified by chitosan as matrix material.Ag-Cu2O/Chitosan/g-C3N4(Ag-Cu2O/CTS/CN) was prepared by using ascorbic acid as reducing agent,Cu(NO3)2·3H2O,AgNO3,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 Ag-Cu2O/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.
[1] Franci G,Falanga A,Galdiero S,et al.Silver nanoparticles as potential antibacterial agents[J].Molecules,2015,20(5):8856-8874.
[2] Liu C,Wang L,Xu H,et al.“One pot” green synthesis and the antibacterial activity of g-C3N4/Ag nanocomposites[J].Materials Letters,2016,164(3):567-570.
[3] Zhou T,Xu Y G,Xu H,et al.In situ oxidation synthesis of visible-light-driven plasmonic photocatalyst Ag/AgCl/g-C3N4 and its activity[J].Ceramics International,2014,40(7):9293-9301.
[4] 李新斌,于萍,李国强,等.Ag/g-C3N4复合光催化材料的光物理及光催化性能[J].化工新型材料,2014,42(5):83-85.
[5] Tian X,Jiang X,Welch C,et al.Bactericidal effects of silver nanoparticles on lactobacilli and the underlying mechanism[J].ACS Applied Materials & Interfaces,2018,10(10):8443-8450.
[6] Binks B P,Rodrigues J A.Enhanced stabilization of emulsions due to surfactant-induced nanoparticle flocculation[J].Langmuir,2007,23(14):7436-7439.
[7] 杨澄宇,方云,蒋惠亮,等.纳米技术与纳米材料(Ⅱ)——表面活性剂在纳米科技中的应用[J].日用化学工业,2003,33(2):49-53.
[8] Goy R C,Britto D D,Assis O B G.A review of the antimicrobial activity of chitosan[J].Polímeros,2009,19(3)241-247.
[9] Wei Dongwei,Sun Wuyong,Qian Weiping,et al.The synthesis of chitosan-based silver nanoparticles and their antibacterial activity[J].Carbohydrate Research,2009,344(17):2375-2382.
[10] Ramesh C,Hariprasad M,Ragunathan V.Antibacterial behaviour of Cu2O nanoparticles against escherichia coli; reactivity of fehling solution on manihot esculenta leaf extract[J].Current Nanoscience,2011,7(5):770-775.
[11] Zhang P,Wang T,Zeng H.Design of Cu-Cu2O/g-C3N4 nanocomponent photocatalysts for hydrogen evolution under visible light irradiation using water-soluble Erythrosin B dye sensitization[J].Applied Surface Ence,2017,391(PT.B):404-414.
[12] Ren G,Hu D,Cheng E W C,et al.Characterisation of copper oxide nanoparticles for antimicrobial applications[J].International Journal of Antimicrobial Agents,2009,33(6):587-590.
[13] Antink W H,Choi Y,Seong K D,et al.Simple synthesis of CuO/Ag nanocomposite electrode using precursor ink for non-enzymatic electrochemical hydrogen peroxide sensing[J].Sensors & Actuators B Chemical,2018,235(2):1995-2001.
[14] Zain N M,Stapley A G F,Shama G.Green synthesis of silver and copper nanoparticles using ascorbic acid and chitosan for antimicrobial application[J].Carbohydrate Polymers,2014,112(20):195-202.
[15] Ong W J,Tan L L,Ng Y H,et al.Graphitic carbon nitride (g-C3N4)-based biophotocatalysts for artificial photosynthesis and environmental remediation:are we a step closer to achieving sustainability[J].Chemical Review,2016,116(12),7159-7329.
[16] 杜文修,杨娟,桑玉祥,等.Ag/Fe3O4/rGO纳米复合材料的制备及抗菌性能[J].高等学校化学学报,2017,38(3):346-354.
[17] Wu Yunyan,Zhou Yazhou,Xu Han,et al.Highly active,superstable,and biocompatible Ag/polydopamine/g-C3N4 bactericidal photocatalyst:synthesis,characterization,and mechanism[J].ACS Sustainable Chemistry & Engineering,2018,6(11):14082-14094.
[18] Amaral I F,Granja P L,Barbosa M A.Chemical modification of chitosan by phosphorylation:an XPS,FT-IR and SEM study[J].Journal of Biomaterials Science Polymer Edition,2005,16(12):1575-1593.
[19] Maachou H,Genet M J,Aliouche D,et al.XPS analysis of chitosan-hydroxyapatite biomaterials:from elements to compounds[J].Surface & Interface Analysis,2013,45(7):1088-1097.
[20] Liang Y,Chen Z,Yao W,et al.Decorating of Ag and CuO on Cu nanoparticles for enhanced high catalytic activity to the degradation of organic pollutants[J].Langmuir,2017,33(31):7606-7637.
基金资助
国家自然科学基金(51572114)
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