CHEMICAL PREPARATION AND PROPERTIES OF SOME HIGH CONCENTRATED COLLOIDAL SILVER SOLUTIONS FOR ANTIMICROBIAL APPLICATIONS

被引：0
|
作者：
Lungu, Magdalena [1 ]
Enescu, Elena [1 ]
Grigore, Florentina [1 ]
Buruntia, Nicoleta [1 ]
Lucaci, Mariana [1 ]
Rimbu, Gimi [1 ]
Panzaru, Carmen [2 ]
Ionescu, Cezar [2 ]
机构：
[1] Natl Inst Res & Dev Elect Engn INCDIE ICPE CA, Bucharest 030138, Romania
[2] Univ Med & Pharm Gr T Popa, Fac Med, Iasi 700115, Romania
来源：
REVUE ROUMAINE DE CHIMIE | 2012年 / 57卷 / 9-10期
关键词：
chemical synthesis; concentrated colloidal silver solutions; antimicrobial assays; biocidal activity; OPTICAL-PROPERTIES; NANOPARTICLES;
D O I：
暂无
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Some stable colloidal silver solutions of 600-1700 ppm silver nanoparticles (AgNps) concentration by an original and efficient chemical synthesis method were prepared. This method is based on the reduction of an aqueous silver nitrate solution with a sodium borohydride solution in the presence of a stabilizer agent of anionic polyelectrolyte type namely poly(acrylic acid sodium salt). The synthesis was carried out in proper conditions relating to concentration, temperature, pH, dropping rate and stirring. The synthesized AgNps were characterized by various techniques like: UV-Vis spectrophotometry, Transmission Electron Microscopy (TEM), Dynamic Light Scattering (DLS) and antimicrobial analyses. AgNps had a spherical shape and a maximum diameter of 32 nm indicated by TEM and DLS analyses. Moreover, the DLS analyses revealed a narrow grain size distribution of AgNps and a high stability of the solutions, showed by the zeta potential values. The antibacterial and antifungal tests proved that the prepared colloidal silver solutions have high antimicrobial properties.
引用
收藏
页码：849 / 855
页数：7
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