Unraveling of Tectona grandis reduced palladium nanoparticles decorated on Mg-Al layered double hydroxide as an efficient nanocatalyst for cross-coupling reactions and azo dye degradation

Abstract

An eco-friendly approach for encapsulating active noble metal nanoparticles (NPs) onto inert support materials and utilizing these nanocatalysts with confined approaches is paving the way for betterment. This paper provides a brief explanation for implementing a biogenic protocol for fabricating palladium nanoparticles (Pd NPs) onto Mg-Al layered double hydroxide (Mg-Al-LDH) using Tectona grandis leaves extract (TGLE) as capping and reducing agents to develop Mg-Al-LDH@TGLE Pd nanocatalyst. The structural and chemical features of the developed nanocatalyst are well characterized by different spectroscopic and analytical techniques. Owing to the significance of Pd NPs in cross-coupling reactions, the Mg-Al-LDH@TGLE Pd nanocatalyst was examined for its catalytic performance in the Hiyama and denitrogenative cross-coupling reactions for the formation of biaryls. Further, the nanocatalyst demonstrated great proficiency in the degradation of the azo dye methyl orange (MO). The Mg-Al-LDH@TGLE Pd nanocatalyst gave pronounced results with good stability and selectivity for both reactions with recyclability up to four cycles. This study presents a greener approach avoiding complicated methodologies for support materials and their advances in catalytic reactions.