Facile Synthesis of Palladium Right Bipyramids and Their Use as Seeds for Overgrowth and as Catalysts for Formic Acid Oxidation

Citations Over TimeTop 10% of 2013 papers

Abstract

Controlling the shape and thus facets of metal nanocrystals is an effective way to enhance their performance in catalytic reactions. While Pd nanocrystals with a myriad of shapes have been successfully prepared with good uniformity and in high yield, Pd right bipyramids (RBPs) that have a singly twinned structure have been elusive. We report a facile route based on polyol reduction for the synthesis of Pd RBPs with purity >90% and sizes controlled in the range 5-15 nm. The success of our synthesis relies on the use of iodide ions to manipulate the strength of an oxidative etchant and selectively cap the Pd{100} facets. The as-prepared RBPs could serve as seeds to generate a set of Pd nanocrystals with novel shapes and structures. The RBPs also exhibited enhanced catalytic activity toward formic acid oxidation, with a current density 2.5 and 7.1 times higher than those of the single-crystal Pd nanocubes (which were also mainly covered by {100} facets) and commercial Pd black, respectively.

Related Papers

• → Physical properties of a soy-based polyol as polyurethane coatings(2018)5 cited
• → Novel Carbamylmethylated Melamine Polyols in Rigid Water-Blown Urethane Foams(1992)1 cited
• The application and development of polyol(2006)
• Preparation of PIPA polyol with high polyurethane content(2007)
• Synthesis Technology of Polyether Polyol from Natural Multiplehydroxyl Compound-Sucrose(2013)