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Silver-ruthenium Bimetallic Nanoparticles as Sacrificial Heterogeneous Persulfate Activator in Situ Chemical Oxidation of Dye by Zoya Zaheer; Abeer Saad Al-Shehri; Amell Musaid Alsudairi; Samia A. Kosa is a Chemical Engineering article available to read on EtoBox.

What is Silver-ruthenium Bimetallic Nanoparticles as Sacrificial Heterogeneous Persulfate Activator in Situ Chemical Oxidation of Dye about?

Silver-ruthenium bimetallic (Ag-Ru) synthesized using green chemical co-reduction method. The valence state, composition, crystallinity, shape, and size of Ag-Ru were evaluated by using XPS, EDX, XRD, SEM, and TEM measurements. The XPS analysis indicates that charge transfer takes place contacting silver and ruthenium moieties. To present the advantages of Ag-Ru NPs as heterogeneous activator, sulfate radical based advanced oxidation processes for patent blue V dye degradation was chosen as a model contaminant. The Ag-Ru/S2O8 2− system shows great catalytic activity at lower dye concentration, pH, increasing the dosage of NPs, and persulfate. The activated system showed a much higher dye oxidation rate compared to either Ag-Ru or S2O8 2− alone. The degradation percentage decreases with increasing the dye concentration as well as pH of the reaction media. The persulfate exhibits complex kinetic behavior on the degradation of dye. The activation energy for the system was 57.7 kJ/mol calculated from Arrhenius equation. The oxidation of dye follows pseudo-first order kinetics (kapp = 0.029 min−1). The excellent activation performance of Ag-Ru might be due to the synergistic effect of s

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Author

Zoya Zaheer; Abeer Saad Al-Shehri; Amell Musaid Alsudairi; Samia A. Kosa

Publisher

Elsevier BV

Published

2023

Language

EN

Field

Chemical Engineering (Physical Sciences)