The objectives of this study were to obtain mesoporous activated
carbon with low ash content, impregnate this adsorbent with the Enoxil
medicinal preparation and with Ag and Se nanoparticles, qualitatively and
quantitatively analyze the immobilization processes of neutral nanoparticles on
intact and oxidized activated carbons, and test the microbiological activity of
the obtained samples. Microwave-activated carbons (ACMW) derived from walnut
shells were impregnated with Ag and Se nanoparticles, as well as the
biologically active compound Enoxil, and their microbiological properties were
evaluated. To enhance the adsorbent's functionality, the activated carbon was
oxidized with ozone, producing ACMWO, which contained aliphatic and aromatic
carboxylic groups. This oxidation process led to a significant reduction in the
specific surface area of the activated carbon. The structural parameters of the
carbons were determined using nitrogen adsorption analysis, while simultaneous
thermal analysis provided insights into the thermal behavior of both the
oxidized and unoxidized forms. Infrared spectroscopy was employed to
investigate the surface chemistry of the adsorbents. The microbiological
activity of the composites was tested against Escherichia coli and Candida albicans.
Kinetic studies further allowed for the estimation of the bactericidal and
fungicidal action times of the activated carbons. Microwave activation allowed
obtaining mesoporous ACMW carbon with a high specific surface area and a low
mineral content over a short period of time. The obtained results suggest the
use of activated carbons impregnated with nanoparticles and Enoxil preparation
in various medical fields, in particular for the creation of bactericidal
dressings that would protect the penetration of infections within the body,
comfortably keeping of humidity in the area of open wounds, with adsorption and
subsequent destruction of the infected exudate.
Author
(s) Details
Oleg
Petuhov
Research Center of Thermal Analysis in Enviromental Problems, West
University of Timisoara, Pestalozzi Street 16, 300115, Timisoara, Romania and
Institute of Chemistry, State University of Moldova, 3, Academiei Str.,
MD-2028, Chisinau, Republic of Moldova.
Tudor
Lupascu
Institute of Chemistry, State University of Moldova, 3, Academiei
Str., MD-2028, Chisinau, Republic of Moldova.
Titus
Vlase
Research Center of Thermal Analysis in Enviromental Problems, West
University of Timisoara, Pestalozzi Street 16, 300115, Timisoara, Romania.
Ionela-Amalia
Bradu
Research Center of Thermal Analysis in Enviromental Problems, West
University of Timisoara, Pestalozzi Street 16, 300115, Timisoara, Romania.
Dominika
Behunová
Institute of Geotechnics SAS, Watsonova, 45, 040 01 Kosice,
Slovakia.
Please see the book here:- https://doi.org/10.9734/bpi/rdcbr/v7/2762
