<p>This study presents the development of a novel triazine-palladium nanocatalyst, Tz@cell-Pd, anchored on cellulose, a sustainable, cost-effective, abundant, environmentally benign, non-toxic material that serves as an ideal heterogeneous support for metallic nanoparticles (NPs), through a multistep approach. The prepared nanocatalyst was extensively characterized with multiple physicochemical analytical techniques to elucidate the physical and chemical properties of the Tz@cell-Pd nanocatalyst. The Tz@cell-Pd nanocatalyst demonstrated exceptional catalytic activity and high selectivity in both Hiyama coupling as well as in nitroarene reduction reactions under mild conditions. Also, the catalyst displayed high thermal stability and recyclability, allowing for easy recovery through simple filtration or ultracentrifugation from the reaction, while preserving its efficacy for subsequent cycles. The recovered catalyst remains effective for at least ten cycles in Hiyama coupling and six cycles in nitroarene reduction without any substantial loss of activity.</p> Graphical Abstract <p></p>