| Summary: | In this work, we report a facile synthesis of bimetallic solid comprised of Ag and Cu nanoparticles (Ag-Cu NPs) and its enhanced catalytic performance towards the degradation of cationic and anionic dye. Three Ag-Cu NPs samples with different Cu/Ag ratios (1:3, 2:2, and 3:1) were synthesized by the accelerated co-reduction strategy of respective metal salts, copper sulfate, and silver nitrate, using hydrazinium chloride (N2H4•2HCl) as a strong reducing agent in presence of sodium hydroxide. Ag-Cu NPs samples were characterized by XRD, SEM-EDX, TEM, and UV–Vis reflectance. The results revealed that the new preparation procedure grantees to great extent the interstitial distribution of Cu within Ag lattice that increases the amorphousness of the materials where Ag is suggested to predominate the lattice structure. The amorphousness of the prepared bimetallic nanostructure enhances both oxidative (using H2O2) and reductive (using NaBH4) catalytic degradation performance compared to monometallic samples. Sample Ag25Cu75 showed the best results of dyes’ degradations. The mechanisms of oxidative and reductive catalytic degradation of Methylene Blue (MB) and Methyl Orange (MO) by prepared samples were also postulated.
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