Effect of doping activated carbon based Ricinodendron Heudelotti shells with AgNPs on the adsorption of indigo carmine and its antibacterial properties

Biological Synthesis and Characterization of Silver-Doped Nanocomposites: Antibacterial and Mechanistic Studies

“…for the fabrication of highly stable AgNPs [48]. As already reported by other authors [45,46], the absence of the peak that is characteristic of Ag-O groups indicates that silver is present in metallic form in the fabricated nanoparticles [49,50]. These results demonstrate that C. macrostachyus extract contains secondary metabolites, such as phenolics, flavonoids, alkaloids, and terpenoids [51], which might have been incorporated into the prepared nanoparticles.…”

“…In addition, there were no significant changes in the spectra obtained for CAC and CAC/AgNPs, confirming the fabrication of the nanocomposite through van der Waals interactions [59]. Furthermore, the percentage of iodine number decreased by 5%, whereas the methylene blue index showed a percent reduction of 0.008%, inferring that, in lieu of macrospores, the activated carbon's microspores constituted the main fixation site for the nanoparticles, leading to a decrease in their adsorption surface [49,60].…”

“…Afterwards, the obtained spectrograms were analyzed to identify the functional groups located on the surface of the extract and nanoparticles. To obtain the nanocomposites (CAC/AgNPs), the silver nanoparticles (AgNPs) were loaded onto the activated carbon (CAC) by means of simple agitation as previously reported by Odogu et al [49]. Briefly, 5.0 g of CAC was added to 200 mL of AgNP solution, then the resulting solution was vigorously mixed by continuous stirring for 1 h at 150 rpm using a Horse shoe IKA agitator.…”

Composite Activated Carbon from <i>Canarium schweinfurthii</i>/Polyethylene Terephthalate: Adsorption Test of Rhodamine B Dye Removal in Aqueous Solution

“…The rapid increase of the RhB adsorbed quantity during the initial time of adsorption process may be attributed to the availability of large number of adsorption sites. The slowdown and the establishment of equilibrium within 10 min for both PETAC and CS/PETAC is due to the saturation of adsorption sites [26]. The adsorbed quantity at equilibrium were 63.093 mg/g and 98.168 mg/g for PETAC and CS/PETAC respectively.…”

“…Due to the aromatic structure of dye organic pollutants, the application of some of the mentioned methods is not very effective in eliminating pollutants [24]. Among the above-cited methods, the adsorption technique is promising based on its economical aspect, flexibility, simplicity of design and ability to remove various pollutants even at low concentrations [25] [26].…”