The Effect of Polyvinylpyrrolidone on the Formation of Copper Nanoplates in Wet-Chemical Reduction Method

International Journal of Bio-Inorganic Hybrid Nanomaterials

مقاله 1، دوره 1، شماره 4، دی 2012، صفحه 209-214   

نوع مقاله: Research Paper

چکیده

In this work, we report synthesis and characterization of copper nanoparticles in polymer matrix by wet-chemical reduction method using ascorbic acid as reducing agent, copper (II) sulfate as metal precursor and polyvinylpyrrolidone k-30 (PVP K-30) as surfactant agent. The reaction was carried out in a high-speed stirring mixture at room temperature under nitrogen atmosphere. Characterization of the samples was carried by Scanning Electron Microscopy (SEM) and X-ray diffraction (XRD) analysis. The results indicated that, the molar ratio of precursor to surfactant plays a crucial role in the homogeneous growth of copper nanoparticles aggregates and the best condition for formation of homogeneous copper nanoparticles aggregates in polymer matrix was provided for a molar ratio of precursor to surfactant, CuSO4.5H2O/PVP= 70/1 using ascorbic acid as reducing agent. The average particle size of zero valence Cu NPs calculated using Scherrer's formula was about 7.9 nm.

کلیدواژه‌ها

polyvinylpyrrolidone؛ Ascorbic acid؛ Copper nanoparticles؛ Wet chemistry method؛ Copper embedded in PVP matrix