Selective Hydrogen Production from Formic Acid Decomposition on Pd–Au Bimetallic Surfaces

Efficient hydrogen generation from formic acid using AgPd nanoparticles immobilized on carbon nitride-functionalized SBA-15

Bimetallic AgPd nanoparticles were successfully immobilized on graphitic carbon nitride (g-C₃N₄) functionalized SBA-15 for the first time by a facile co-reduction method.

Recent advances in noble metal based composite nanocatalysts: colloidal synthesis, properties, and catalytic applications

This Review article provides a report on progress in the synthesis, properties and catalytic applications of noble metal based composite nanomaterials. We begin with a brief discussion on the categories of various composite materials. We then present some important colloidal synthetic approaches to the composite nanostructures; here, major attention has been paid to bimetallic nanoparticles. We also introduce some important physiochemical properties that are beneficial from composite nanomaterials. Finally, we highlight the catalytic applications of such composite nanoparticles and conclude with remarks on prospective future directions.

Aerobic Oxidation of Cyclohexane on Catalysts Based on Twinned and Single-Crystal Au75Pd25 Bimetallic Nanocrystals

Bimetallic Au75Pd25 nanocrystals with shapes of icosahedron and octahedron were synthesized by adding different amounts of iodide ions, and were employed as catalysts for solvent-free aerobic oxidation of cyclohexane. Although both icosahedrons and octahedrons were bounded by {111} facets, the turnover frequency number of Au75Pd25 icosahedrons reached 15,106 h(-1), almost three times as high as that of Au75Pd25 octahedrons. The conversion of cyclohexane reached 28.1% after 48 h using Au75Pd25 icosahedrons, with the selectivity of 84.3% to cyclohexanone. Density functional theory calculations along with X-ray photoelectron spectroscopy examinations reveal that the excellent catalytic performance of AuPd icosahedrons could be ascribed to twin-induced strain and highly negative charge density of Au atoms on the surface.

High-quality hydrogen generated from formic acid triggered by in situ prepared Pd/C catalyst for fuel cells

High-quality hydrogen can be generated from formic acid triggered by in situ prepared Pd/C catalyst in ambient conditions. The obtained gas can be directly fed into proton exchange membrane fuel cells indicating a very promising application.

Comparative theoretical study of formic acid decomposition on PtAg(111) and Pt(111) surfaces

This theoretical study compares the catalytic decomposition pathways of HCOOH on pure Pt surface with the ideal single-atom model catalyst of PtAg nanostructures.

Graphene-supported small tungsten carbide nanocrystals promoting a Pd catalyst towards formic acid oxidation

The diagrammatic drawing of the graphene-supported small tungsten carbide nanocrystals with hexagonal prism shape promoting pd catalyst towards formic acid oxidation.

Effect of annealing in oxygen on alloy structures of Pd–Au bimetallic model catalysts

Annealing in an oxygen ambient stabilizes Pd atoms on Pd–Au surfaces, resulting in higher oxygen uptake and CO oxidation activity.

Au@Pd core–shell nanoparticles-decorated reduced graphene oxide: a highly sensitive and selective platform for electrochemical detection of hydrazine

An Au_core–Pd_shell-decorated reduced graphene oxide nanocomposite is successfully employed for the electrochemical detection of low-level hydrazine in an aqueous solution.