New Composite Nanomaterials with Antimicrobial and Photocatalytic Properties Based on Silver and Zinc Oxide

被引：16

作者：

Dumbrava, Anca ^{[1
]}

Berger, Daniela ^{[2
]}

Matei, Cristian ^{[2
]}

Prodan, Gabriel ^{[3
]}

Aonofriesei, Florin ^{[4
]}

Radu, Marius Daniel ^{[4
]}

Moscalu, Florin ^{[5
]}

机构：

[1] Ovidius Univ Constanta, Dept Chem & Chem Engn, Constanta, Romania

[2] Univ Politehn Bucuresti, Dept Inorgan Chem Phys Chem & Electrochem, Bucharest, Romania

[3] Ovidius Univ Constanta, Electron Microscopy Lab, Constanta, Romania

[4] Ovidius Univ Constanta, Fac Nat & Agr Sci, Constanta, Romania

[5] Ovidius Univ Constanta, Dept Phys, Constanta, Romania

来源：

JOURNAL OF INORGANIC AND ORGANOMETALLIC POLYMERS AND MATERIALS | 2019年 / 29卷 / 06期

关键词：

Ag-ZnO nanocomposites; Biosynthetic method; Nanobio silver; Photocatalytic activity; Antimicrobial activity; SYNERGISTIC ANTIBACTERIAL ACTIVITY; OPTICAL-PROPERTIES; GREEN SYNTHESIS; AG NANOPARTICLES; ZNO; DEGRADATION; ANTHOCYANINS; LIGHT; NANOSTRUCTURES; NANOPOWDERS;

D O I：

10.1007/s10904-019-01166-4

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Herein we report the synthesis of composites containing nanobio silver, ZnO and phytochemicals in different Ag/Zn molar ratios. First, Ag nanoparticles were prepared using red cabbage extract and then they are covered with zinc oxide obtained also in the same extract by precipitation method. The antimicrobial activity of synthesized nanocomposites was tested against Staphylococcus aureus, Streptococcus, Escherichia coli, Pseudomonas and Candida clinical isolates and compared with that of ZnO functionalized with anthocyanins. The presence of nanobio silver into the nanocomposites enhanced the bactericidal properties demonstrated by slightly larger diameters of growth inhibition zone and lower minimal inhibitory concentrations. S. aureus and Streptococcus strains were more sensitive than the other strains and fungi both for Ag-ZnO nanocomposites and ZnO functionalized with anthocyanins. Also, the presence of silver in the nanocomposites leads to an improved photocatalytic activity (PA) confirmed in the bleaching of Congo red solution. The PA increases with silver content when Ag content is low (up to 1/12 Ag/Zn molar ratio), but decreases significantly for high silver concentration (1/7 Ag/ZnO molar ratio) in the Ag-ZnO nanocomposites.

引用

页码：2072 / 2082

页数：11

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