Determination of Hydrodynamic Parameters of Chitosan Stabilized Bimetallic Nanoparticles  

作　　者：Vokhidova N.R. Rashidova S.Sh. 

机构地区：[1]Institute of Chemistry and Physics of Polymers of Scientific Academy of Uzbekistan,Uzbekistan

出　　处：《Journal of Metallic Material Research》2022年第1期32-37,共6页金属材料研究（英文）

摘　　要：The hydrodynamic characteristics of bimetallic Ag/Cu and Co/Ag nanopar­ticles stabilized by chitosan were determined.The polydispersity index and the diameter of nanoparticles were observed to decrease in contrast to the original polymer during the creation of chitosan stabilized bimetallic nanoparticles,decreasing from 0.342 to 0.12±0.04 and 2.5 micron to 180 nm,respectively.However,the diffusion coefficient of chitosan was in­creased from 0.2 cm^(2)/s to 2.71 cm2/s during the production of stable bime­tallic nanoparticles.The lack of absorption bands at 500 nm and 700 nm-900 nm in the UV spectra of the samples suggests that in the presence of a reducing agent,copper(II)and cobalt(II)ions undergo full reduction.The relationship between the synthesis conditions and the kind of structure of bimetallic nanoparticles“core-shell”has been discovered.Silver atoms have been shown to be both a core and a shell,depending on the synthesis conditions and chemical nature of metal ions.

关 键 词：Chitosan Bombyx mori Bimetallic nanoparticles Index polydispersity Diffusion coefficient 

分 类 号：O64[理学—物理化学]