Facile Method for the Synthesis of Copper Nanoparticles Supported on the Organoclay Material

Abstract

In this study, synthesis of copper nanoparticles was performed using organoclay as a support to stabilize the nanoparticles. Organoclay amount was gradually increased, which had an effect on the morphology of the resultant nanoparticles. Low amount of organoclay added resulted in larger and agglomerated copper nanoparticles whereas increased amount of organoclay gave smaller sized nanoparticles. The hybrid materials were characterized using the SEM and TEM for morphology, XRD and FT-IR spectroscopy for structural elucidation, thermal analysis using TGA and also studying their antibacterial effect on the two well-known gram negative bacteria of E. coli and P. Aeruginosa. The synthesized nanoparticles were found to be crystalline Cu nanoparticles with a mix of CuO. Larger sized copper nanoparticles and agglomerates showed the higher thermal behaviour as compared with smaller nanoparticles with higher organoclay loading. The hybrid showed an improved antibacterial activity as compared with organoclay alone. The hybrid showed the higher antibacterial effect against the P. aeruginosa microorganism as compared with the E. coli microorganism.

An Overview of Strategic Non-Biological Approaches for The Synthesis of Cupper Nanoparticles

“…Bambo "et al" used a modified version of this procedure where Instead of sodium citrate organoclay was used as a stabilizing as well as a substrate for nanoparticle formation. Cupper sulfate solution in the presence of organoclay was reduced with NaBH4 to form organoclay/Cu nanoparticles [63]. A novel method has been proposed to synthesize CuNP at low temperature , weak ascorbic acid is used to reduce cupper sulphate in aqueous solution.…”

Recent innovations in the technology and applications of low-dimensional CuO nanostructures for sensing, energy and catalysis

“…Wet-chemical and hydrothermal routes for CuO nanomaterial fabrication are among the most important techniques that are currently under development for critical applications such as in lithium-ion batteries, where wet-chemical methods ensure the fabrication of, for example, electrode materials, [89][90][91] optical materials, 92 photocatalysts, 93 bioactive materials 94 and other functional nanomaterials. 95 Fig. 10a illustrates an interesting example of the application of the wet-chemical process to fabricate ultrathin CuO nanowires using self-assembled Cu(OH) 2 as the starting material.…”