Konował Emilia, Sybis Marta, Modrzejewska-Sikorska Anna, Milczarek Grzegorz
Poznan University of Technology, Faculty of Chemical Technology, Institute of Chemistry and Technical Electrochemistry, Berdychowo 4, 60-965 Poznan, Poland.
Poznan University of Life Sciences, Faculty of Environmental Engineering and Spatial Planning, Institute of Civil and Geoengineering, Piatkowska 94, 60-637 Poznan, Poland.
Int J Biol Macromol. 2017 Nov;104(Pt A):165-172. doi: 10.1016/j.ijbiomac.2017.06.011. Epub 2017 Jun 6.
Various commercial dextrins were used as reducing and stabilizing agents for a novel one-step synthesis of silver nanoparticles from ammonia complexes of silver ions. As a result, stable colloids of silver were formed during the reaction with the particle size being the function of the dextrin type. The obtained colloids were characterized by UV-vis spectrophotometry, size distribution (using Non-Invasive Backscatter optics) and transmission electron microscopy (TEM). The achieved results clearly indicate the possibility of low-cost production of large quantities of colloidal silver nanoparticles using materials derived from renewable sources. The resulting silver colloids can be used for different purposes, e.g. as bactericidal agents. Combination of the aforementioned properties of nanosilver particles with plasticizing properties of dextrin enables to obtain cement mortars with increased workability and enhanced compressive strength. Moreover, the obtained material is also characterized by increased immunity to adverse impact of microorganisms.
各种商业糊精被用作还原剂和稳定剂，用于从银离子的氨配合物中一步法合成新型银纳米颗粒。结果，在反应过程中形成了稳定的银胶体，其粒径是糊精类型的函数。通过紫外可见分光光度法、尺寸分布（使用非侵入性背散射光学）和透射电子显微镜（TEM）对所得胶体进行了表征。所取得的结果清楚地表明，使用可再生来源的材料低成本大量生产胶体银纳米颗粒是可能的。所得的银胶体可用于不同目的，例如作为杀菌剂。纳米银颗粒的上述特性与糊精的增塑特性相结合，能够获得具有更高工作性和增强抗压强度的水泥砂浆。此外，所获得的材料还具有对微生物不利影响的免疫力增强的特点。
