Nanoclustered palladium(0) supported on a gel-type poly-acrylonitrile–N,N-dimethylacrylamide–ethylenedimethacrylate resin: Nanostructural aspects and catalytic behaviour

Shape-controlled palladium nanowires and nanoparticles electrodeposited on carbon electrodes

“…The ongoing research concentrates on exploiting the primary characteristics of palladium, with special interest in hydrogenation [3,4], catalysis [5][6][7] and nanotechnology [8,9], but also thermal [10][11][12][13] and medical [14,15] applications. Being a somewhat cheaper alternative to platinum, intrinsically selective to hydrogen, and a good catalyst for oxidations [16,17], palladium currently plays a key role in fuel cell research [18] and is extensively used in catalytic combustion, methanol oxidation, hydrogen sensors, and hydrogen storage [4,19,20].…”

Polymer supported palladium nanocrystals as efficient and recyclable catalyst for the reduction of nitroarenes to anilines under mild conditions in water

“…As reported for nanoclustered palladium supported on methacrylate based resins [52], the reticular and macro porous polymeric support of Pd-pol is able to immobilize and stabilize palladium nanoparticles (formed under reaction conditions by reduction of the pristine Pd(II) anchored complex), suitable for the Suzuki cross coupling of arylhalides with arylboronic acids in water [53], for the aerobic selective oxidation of benzyl alcohols in water [54], for the selective hydrogenation of quinolines in aqueous medium under mild conditions [55], and for the reductive amination reaction under 1 atm of H 2 [50]. Furthermore, its good swellability in water renders Pd-pol an ideal potential catalyst for reactions carried out in aqueous solvent, since the migration of the reagents to the active sites would be not hampered by the solid support.…”

A polymer supported palladium(II) β-ketoesterate complex as active and recyclable pre-catalyst for selective reduction of quinolines in water with sodium borohydride

“…In fact, clusters of primary nanoparticles did not grow in size indicating absence of particle mobility under the reaction conditions. Interestingly, it was reported that palladium(II) centers supported onto a methacrylic resin similar to Pd-pol pre-catalyst, once reduced to Pd(0), gave nanoparticles, which in turn could increase their size (growth) or/and agglomerate (aggregation) with the time [62,63]. The aggregation process would decrease the catalytically active superficial area much more than the growth of a single nanoparticle.…”

“…Numerous investigations concerning the development of the incorporation technique of metal nanoparticles into the polymer matrix have been published demonstrating the stabilization of the metal nanoparticles encapsulated into the polymer matrix [62][63][64][65]. A polymerizable Pd(II) ␤-ketoesterate complex is the starting monomer for the synthesis of the metal-polymer composite material Pd-pol [47].…”