Green synthesis of Konjac glucomannan templated palladium nanoparticles for catalytic reduction of azo compounds and hexavalent chromium

摘要: Abstract Palladium nanomaterials (PdNPs) have drawn significant attention due to their fascinating catalytic, optical, and electrical properties. PdNPs-catalytic hydrogenation is considered as an efficient way for the remediation of inorganic organic pollutants. Thus, a simple Konjac glucomannan (KGM) reduced stabilized PdNPs-catalysts were green synthesized without using any toxic reagents. The maximization PdNPs production was investigated factorial design experiments, where one variable (precursor ratio, solution pH, reaction time, temperature) studied at time. surface plasmon resonance (SPR), morphology, crystallinity, particle size distribution, composition spectra, stability as-synthesized explored in detail. Results revealed that particles are mostly spherical shapes, smaller (6.48 ± 2.19 nm) with narrow highly crystalline (d–spacing = 0.224 nm), well (zeta potential −17.89 mV), coated by thin KGM layer cladding. type oxidant temperature-dependent catalytic degradation six azo dyes detoxification hexavalent chromium [Cr (VI)] studied. PdNPs-catalyst demonstrate excellent performance formic acid (HCOOH)−induced reduction such pollutants optimum 45 0C temperature. We optimistic insights on behavior reactant adsorption kinetics this study could be readily extended other systems practically applied wastewater treatment.