Year: 2024
Type: article
Abstract: A simple deposition method was used to synthesize Ag@Ag2O/RGO nanocomposites with different loads of Ag (0.4%and 4%) and at different annealing temperatures (250oC and 400oC). All samples were characterized with varioustechniques such as XRD, TEM-SAED, N2 sorptiometry, Raman, FTIR, UV-Vis diffuse reflectance and photoluminescencespectroscopy. The catalytic performances of the samples towards reduction of 4-nitrophenol (4-NP) were tested under darkconditions. The XRD and TEM results revealed the well dispersion of Ag and Ag2O moieties on RGO with crystallite sizein the range of 17-34 nm. The nanocomposite Ag@Ag2O/RGO annealed at 400oC exhibited the highest reduction rateconstant for 4-NP reduction (0.01 s-1), under the dark condition. The effect of presence of additives such as benzoquinone,triethanolamine, isopropyl alcohol and Na2CO3 on the reduction activity as well as its kinetics together with the reactionmechanism was well discussed.
Institution: Benha University
Language: English
Subfield: Organic Chemistry
Field: Chemistry
Domain: Physical Sciences
Open Access status: bronze
OpenAlex ID: W4401185918