Spirofluorene pyridine palladium nanoparticles and preparation method thereof

Abstract

The invention discloses a spirofluorene pyridine palladium nanoparticles and a preparation method thereof. The method is as below: adding a certain amount of metal salt solution into the organic ligand containing pyridine units, stirring for 1-3 h at a certain temperature, aging for 3-5 h, conducting centrifugal separation, washing and drying to obtain corresponding metal-ligand nanoparticles. The preparation process is simple, low in cost and suitable for mass production; and by using different solvents, controlling the amount of reactants, reaction time and temperature, the method achieves effective regulation on particle size and dispersion of spirofluorene pyridine palladium nanoparticles. The prepared spirofluorene pyridine palladium nanoparticles are functionalized nanoparticles containing palladium, have stable performance, can be used for the catalysis of C-C bond coupling reaction, and have high catalytic efficiency and yield reaching 90-99%. Therefore, the spirofluorene pyridine palladium nanoparticles have broad application prospects in the field of catalysis.

Description

technical field [0001] The invention belongs to the field of metal nanoparticle catalysis, and in particular relates to a spirofluorenepyridine palladium nanoparticle used for catalytic reaction and a preparation method thereof. Background technique [0002] Broadly speaking, nanomaterials refer to materials with crystal, amorphous, quasi-crystal and interface layer structures in which any one-dimensional scale is less than 100 nm. When the small particle size is added to the nanometer level, it has volume effect, surface effect, quantum size effect and macroscopic quantum tunneling effect. So that it has singular mechanical, electrical, optical, thermal, chemical activity, catalytic and superconducting properties, making nanomaterials have important application value in various fields. As the size of nanoparticles decreases, the specific surface area increases, the number of surface atoms increases, and the coordination unsaturation of surface atoms leads to a large number...

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Problems solved by technology

Although nanocatalysts have achieved some development and application results, there are still problems in controlling the shape, distribution and particle size of nanocatalysts.

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