New biocide hybrid materials based on mesoporous silica and silver nanoparticles
| 23.08.2018, 10:51 | |
To obtain such hybrid materials several techniques of nanosized silver particles immobilization directly into the matrix of silicon oxide were elaborated, silica being chosen due to its high physical, chemical and thermal stability. Preparation of silver was based on the reduction of Ag(NH3)2+ to the Ag in alkaline medium. The solution of glucose (“green” reducer) was used as a reducing agent. Dimensional, morphological and spectral characteristics of the synthesized materials were determined. The formation of nanosized silver particles of spherical shape could be justified by the positions of the peaks in optical absorption spectra of hybrid material (^=400-460 nm). The samples obtained were examined by atomic force microscopy and powder X-ray method. The regularities of the preparation conditions influencing the material dimensions and morphology of the particles were stated. Bactericidal action of the synthesized materials was discovered in vitro (using E. coli, Salmonella, Staphylococcus). It was proved that biocide action of the synthesized materials was much greater than that of silver. Usoltsev S. D. | |
| Категория: Тезисы | | | |
| Просмотров: 1533 | Загрузок: 0 | |
| Всего комментариев: 0 | |