Synthesis and optical properties of copper nanoparticles prepared by a chemical reduction method
By Thi My Dung Dang, Thi Thu Huong Le, E. Fribourg-Blanc, M. Dang. 2011
461 citations recorded by the source corpus.
Copper nanoparticles, due to their interesting properties, low cost preparation and many potential applications in catalysis, cooling fluid or conductive inks, have attracted a lot of interest in recent years. In this study, copper nanoparticles were synthesized through the chemical reduction of copper sulfate with sodium borohydride in water without inert gas protection. In our synthesis route, ascorbic acid (natural vitamin C) was employed as a protective agent to prevent the nascent Cu nanoparticles from oxidation during the synthesis process and in storage. Polyethylene glycol (PEG) was added and worked both as a size controller and as a capping agent. Cu nanoparticles were characterized by Fourier transform infrared (FT-IR) spectroscopy to investigate the coordination between Cu nanoparticles and PEG. Transmission electron microscopy (TEM) and UV–vis spectrometry contributed to the analysis of size and optical properties of the nanoparticles, respectively. The average crystal sizes of the particles at room temperature were less than 10 nm. It was observed that the surface plasmon resonance phenomenon can be controlled during synthesis by varying the reaction time, pH, and relative ratio of copper sulfate to the surfactant. The surface plasmon resonance peak shifts from 561 to 572 nm, while the apparent color changes from red to black, which is partly related to the change in particle size. Upon oxidation, the color of the solution changes from red to violet and ultimately a blue solution appears.
Subfields: Biomedical Engineering, Electronic, Optical and Magnetic Materials, Materials Chemistry
View Paper: https://www.semanticscholar.org/paper/8b386e9ddce871fb2444622cebb468412931def7
How researchers see this paper
The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.
In Biomedical Engineering
- Mama El Rhazi
- A. Ramazani
- Asemeh Mashhadi Malekzadeh
- Fatima Ezzahra Salih
- K. Lafdi
- S. Majid
- Mina Sorbiun
- M. Elbasri
In Electronic, Optical and Magnetic Materials
In Materials Chemistry
Citations in the corpus
- A chemical reduction approach to the synthesis of copper nanoparticles (2016, background): “This agglomeration, which can be caused by attractive van der Waals forces between crystals, should be repressed to limit the final particle size at the nanometric scale [16].”
- Biosynthesis of metallic nanoparticles using plant extracts and evaluation of their antibacterial properties (2018, background): “This agglomeration, which can be caused by attractive van der Waals forces between crystals, should be repressed to limit the final particle size at the nanometric scale [109].”
- Recent progress in nanocomposites based on conducting polymer: application as electrochemical sensors (2018, background): “CuNPs are very well known for their potential application in cooling fluids for electronic systems, conductive inks, switches, or photochromic glasses in optical devices and nonlinear optical materials [146].”