Abstract
Structural and optical studies on CuO nanoparticles prepared by hydrothermal route with different concentration of hexamethylenetetramine (HMTA) are reported. Evolution of structure, microstructure and optical properties were studied by X-ray diffraction (XRD), Fourier Transform Infrared spectroscopy (FTIR) analysis, and UV–visible spectrophotometer. The XRD analysis indicates the formation of CuO nanoparticles with a monoclinic structure. We also note the presence of a second phase Cu(OH)2 considered as impurity. FTIR technique confirms the presence of this phase. XRD analysis watches that the sample with less concentration of HMTA gives higher crystallite size with less strain. Optical absorption analysis indicated a blue shift in the direct band gap which is due to the quantum confinement effect, and a red shift in the indirect band gap which is attributed to the intra-gap defects states. The different optical parameters are calculated. Their values show a remarquable influence of the amine concentration in the properties of CuO nanoparticles.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
