Morphologically tailored facet dependent silver nanoparticles supported α-Al2O3 catalysts for chemoselective reduction of aromatic nitro compounds

• Engineered a well-defined and shape-controlled Ag nanoparticles. The growth of nanocrystal shapes i.e., nanocubes, nanowires nanospheres are studied. shape facet dependency on nitro reduction kinetics had profound effect. nanocubes with low indexed facets {100} found to be active selective sites. nanoparticles surface area, intrinsic sites, exposed microcrystal lattice planes some the key factors in nanocatalysis. influence dependent been effect its catalytic activity. This study is focused synthesis morphologically silver (Ag) supported α-Al 2 O 3 catalysts were performed. correlation NPs varied activities chemoselective compounds was investigated. Engineering different (AgNCs), (AgNWs) nano spheres (AgNSPs) synthesized by using modified polyol method. It demonstrated that there significant difference their respect facets. evolution nanoshapes structural properties analysed SEM, TEM, HR-TEM P-XRD techniques. From XRD, exhibited high percentage index (100) which favourable centers than (111) plane reduction. We observed selectively facets, highly favorable for enhanced activity reaction rate phenol amino over 35.01 x 10 -3 min -1 (AgNCs/Al ), 8.28 (AgNWs/Al 0.65 (AgNSPs/Al respectively. calculated thermodynamic parameters E values 23.6, 28.6 29.4 AgNC, AgNWs AgNSP