Abstract
Herein, we present a facile route for the preparation of porous silicon supported porous ruthenium nanoparticle system (Si@p-RuNP) for efficient removal of azo-based dyes and aromatic amines from wastewater. The synthesized nanoparticles were characterized using different analytical techniques including high-resolution transmission electron microscopy, X-ray photoelectron spectroscopy, field-emission scanning electron microscopy, powder X-ray diffraction, Brunauer–Emmett–Teller analysis, etc. The Si@p-RuNP nanocatalytic system exhibits dual catalytic behavior for the reduction of –N═N– bond and oxidation of aromatic amines in aqueous solution. The porous nanostructured Si@p-RuNP exhibits excellent degradation efficacy for Congo red dye (44 cycles in 1 h) as compared to its solid analogue Si@RuNP (24 cycles in 1 h) in the presence of NaBH4. Also, the present nanocatalyst mimics the peroxidase-like activity toward oxidation of various aromatic amines to their corresponding polyamines at pH 5.0 in the presen...
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