Skip to content
Home
About Us
Resources
Profiles Metrics
Authors Directory
Institutions Directory
Top Authors
Top Institutions
Top Sponsors
AI Digest
Contact Us
Menu
Home
About Us
Resources
Profiles Metrics
Authors Directory
Institutions Directory
Top Authors
Top Institutions
Top Sponsors
AI Digest
Contact Us
Home
About Us
Resources
Profiles Metrics
Authors Directory
Institutions Directory
Top Authors
Top Institutions
Top Sponsors
AI Digest
Contact Us
Menu
Home
About Us
Resources
Profiles Metrics
Authors Directory
Institutions Directory
Top Authors
Top Institutions
Top Sponsors
AI Digest
Contact Us
Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
chemistry
CuO nanoparticles: Synthesis, characterization, optical properties and interaction with amino acids
Applied Surface Science, Volume 258, No. 7, Year 2012
Notification
URL copied to clipboard!
Description
Cupric oxide (CuO) nanoparticles with an average size of 6 nm have been successfully prepared by an alcothermal method. The prepared CuO nanoparticles were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), Fourier-transform infrared (FT-IR) and UV-visible absorption spectroscopy. A strong sharp emission under UV excitation is reported from the prepared CuO nanoparticles. The results show that the CuO nanoparticles have high dispersion and narrow size distribution. The fluorescence emission spectra display an intense sharp emission at 365 nm and weak broad intensity emission at 470 nm. Picosecond fluorescence measurements of the nanoparticles suggest bi-exponential function giving time constants of τ 1 (330 ps, 94.21%) and τ 2 (4.69 ns, 5.79%). In neutral and alkaline solutions, Zeta potential values of CuO nanoparticles are negative, due to the adsorption of COO - group via the coordination of bidentate. At low pH the zeta potential value is positive due to the increased potential of H + ions in solution. Comparative UV-visible absorption experiments with the model amino acid compounds of positive and negative charges as arginine and aspartic acid, respectively confirmed the negative surface of CuO nanoparticles. The results should be extremely useful for understanding the mode of the interaction with biological systems. This binding process also affects the particle's behavior inside the body. © 2011 Elsevier B.V. All rights reserved.
Authors & Co-Authors
El-Trass, Amina
Egypt, Kafr El-sheikh
Faculty of Science
Elshamy, H.
Egypt, Kafr El-sheikh
Faculty of Science
El-Mehasseb, Ibrahim Mahmoud
Egypt, Kafr El-sheikh
Faculty of Science
El Kemary, Maged Abdeltawab
Egypt, Kafr El-sheikh
Faculty of Science
Statistics
Citations: 331
Authors: 4
Affiliations: 1
Identifiers
Doi:
10.1016/j.apsusc.2011.11.025
ISSN:
01694332
Research Areas
Environmental