Acacia gum versus pectin in fabrication of catalytically active palladium nanoparticles for dye discoloration

Obedience to the aspects of green chemistry and due to its high catalytic potency, ecofriendly synthesis of palladium nanoparticles (PdNPs) was performed using pectin versus acacia gum as polysaccharides. The viscous solution of alkali solubilized polysaccharides acted superiorly in stabilization of MNPs by decreasing their Brownian motions and sequentially decreased their collision and coagulation. Production of PdNPs preliminary was confirmed via UV-visible spectra. Zetasizer and transmission electron microscopy data, the particle size of PdNPs were prepared by pectin (27.9 nm) is larger than that by acacia gum (5.3 nm). XRD and FT-IR data affirmed the redox reaction between biopolymers and metal ions to produce PdNPs. PdNPs synthesized by acacia gum were characterized by higher surface area (19.54 m(2)/g) compared to that prepared by pectin (3.67 m(2)/g). Additionally, PdNPs synthesized by acacia gum were exhibited by fastest rate of dye discoloration, resulting in complete reductive discoloration of dye after only 5 min and t(1/2) was estimated to be 1.70 min, while, k(1) was 408.8 x 10(-3 )min(-1). The presented green technique could be successively applicable for synthesis of size regulated catalytically active PdNPs to be employable in various industrial purposes. (C) 2020 Elsevier B.V. All rights reserved.