Rationally synthesized five-fold twinned core–shell Pt₃Ni@Rh nanopentagons, nanostars and nanopaddlewheels for selective reduction of a phenyl ring of phthalimide

Abstract

Surface-energy fine-tuned five-fold twinned nanostructures with a core-shell Pt3Ni@Rh structural motif, namely, a core-shell Pt3Ni@Rh pentagon, a core-shell Pt3Ni@Rh starfish, and a paddlewheel with a Pt3Ni crankshaft and two Rh five-fold starfish wheels, are prepared by rationally designed stepwise heteroepitaxial growth. Unusual selective hydrogenation of the phenyl ring in phthalimide is accomplished with moderately active core-shell Pt3Ni@Rh pentagons and starfish-like nanoparticles. The most active paddlewheel structure proceeds to further reduce one carbonyl group, indicating the sequential nature of phthalimide reduction by Rh nanoparticle catalysis.

RhCu 3D Nanoframe as a Highly Active Electrocatalyst for Oxygen Evolution Reaction under Alkaline Condition

“…A great improvement in this area has been feasible with facet‐controlled nanoparticles and core–shell nanoparticles with lattice mismatch, which enables surface‐energy modulations 10, 11, 12, 13, 14, 15, 16, 17. Most notably, phenomenal enhancement in catalytic performance has been accomplished by framework nanostructures with dramatically increased surface area per volume, and a great deal of current interest resides on the design and synthesis of novel nanoframework structures 18, 19, 20, 21, 22, 23.…”

“…Nanoparticle structure engineering has been extensively studied in recent years for the development of active nanocatalysts in energy conversion technologies such as fuel cells . A great improvement in this area has been feasible with facet‐controlled nanoparticles and core–shell nanoparticles with lattice mismatch, which enables surface‐energy modulations . Most notably, phenomenal enhancement in catalytic performance has been accomplished by framework nanostructures with dramatically increased surface area per volume, and a great deal of current interest resides on the design and synthesis of novel nanoframework structures .…”

Rational Synthesis of Heterostructured M/Pt (M = Ru or Rh) Octahedral Nanoboxes and Octapods and Their Structure-Dependent Electrochemical Activity Toward the Oxygen Evolution Reaction

“…Furthermore, it appears that the regioselective growth of {111} Ru is critically dependent on the reactivity differentiation among vertices, edges, and planes. It is well known that the speed of nanocrystal growth is directly proportional to the surface energy of nanostructural features . A regular nanocube has only {100} planes, strongly bound by CO molecules, while a concave cube has high‐index facets with high energy on the vertices; the average internal angle between a concave cube surface and {100} facet is 18.2° and this corresponds to the presence of {310} plane at the vertices of a concave nanocube (Figure S8, Supporting Information) .…”

Merging Transition-Metal Catalysis with Phthalimides: A New Entry to Useful Building Blocks

“…A couple of examples have also proven that rhodium complexes can be used as efficient catalysts for the hydrogenation of the aromatic ring of the phthalimide backbone. [36][37][38] The first example was reported by Agbossou-Niedercorn and co-workers. 36 They managed to hydrogenate the aromatic ring as well as both carbonyl groups of the phthalimide skeleton with formation of the corresponding cyclic amine in 58% yield.…”