Porous Single‐Crystalline Palladium Nanoparticles with High Catalytic Activities

Abstract

Palladium's pore cousin: a facile approach is described for the size-controlled preparation of porous single-crystalline Pd nanoparticles. These porous Pd nanoparticles exhibit size-independent catalytic activities for the Suzuki coupling and are more active than commercial Pd/C catalysts.

Preparation and structure-property relationships of supported trimetallic PdAuAg catalysts for the selective hydrogenation of acetylene

“…Nowadays, exponentially expanded nanotechnology has certified that the morphologies of nanoparticles dramatically affect the catalytic properties of catalysts [9]. Among diverse morphologies, oriented attachment of small nanoparticles into three-dimensional (3D) nanostructures as nanocatalysts is a hotspot owing to their rough surfaces, abundant defect sites, and cooperative interactions between the building blocks [10][11][12][13][14]. Our group successfully introduced the 3D nanostructures of PdAu and PdAg catalysts into the selective hydrogenation of acetylene, and these catalysts exhibited preferred activity and selectivity.…”

Fabrication of a PdAg mesocrystal catalyst for the partial hydrogenation of acetylene

“…The resulting 3D nanostructures are generally characterized by rough surfaces, high porosity, high densities of crystalline defects, and complex morphologies, with cooperative effects between the building blocks [24][25][26][27][28][29][30]. For example, a porous Pd catalyst showing high catalytic activity in the Suzuki coupling reaction has been reported, and the high activity was attributed to the high concentration of low-coordinate surface atoms [27]. Moreover, Yang et al found that tetradecyltrimethylammonium bromide-capped porous Pt particles exhibited superior catalytic activity in ethene hydrogenation compared with polyvinylpyrrolidone-capped Pt cubes and cuboctahedra [24].…”

Synthesis and catalytic properties of highly branched palladium nanostructures using seeded growth

“…As a result, the formation of highly branched nanostructures requires growth under conditions that typically favour kinetic products. To date, a range of branched nanostructures have been synthesized for various noble metals, including Pt, [27][28][29] Pd, 3,[30][31][32] Au, 33,34 Ag, 35 and Ru. 36 However, the fast rate of kinetically controlled growth makes it difficult to control the final particle size, with branched structures >100 nm being produced.…”

“…In industry, palladium is used extensively as a heterogeneous catalyst, especially for the reduction of automobile emissions, 1 and for carbon-carbon cross-coupling reactions such as Suzuki, [2][3][4][5] Heck, 6,7 and Stille coupling. 8,9 Suzuki cross-coupling reactions are one of the most widely implemented methods used in the formation of carbon-carbon bonds, and are also very efficient under heterogeneous catalysis conditions.…”