Method for synthesizing nano palladium particles with superactivity

Abstract

The invention provides a method for synthesizing nano palladium particles with superactivity and widens a method for preparing relevant nano particles. By creatively using iodobenzene as a surface modifying agent and adopting the characteristics that metal nano particles can be effectively absorbed and an effective steric hindrance effect can be provided by using phenyl of the iodobenzene, more stable nano palladium particles with high-content defects at the inner part and the surface are formed under the combined action of sudden reduction of reaction liquid temperature and polyvinyl pyrrolidone solubility caused by freezing acetone. The method has the characteristics of simple process, convenience for operation, controllable feature, wide application range and the like, and has a potential application value.

Description

technical field [0001] The invention relates to a preparation method of a palladium nanoparticle catalyst. Specifically, a palladium nanoparticle with a defect-rich internal structure and relatively stable palladium nanoparticle is prepared by using a method of coordinating a nanoparticle outer coating agent and temperature control. Due to the high content of defects, nanoparticles have potential application value in electrocatalysis and other aspects, and belong to the field of catalyst materials. Background technique [0002] In the past decade, the morphology-controllable synthesis of palladium nanoparticles has attracted a lot of attention in the scientific community, mainly because the catalytic, optical, electrical, magnetic and other properties of nanoparticles can be effectively controlled through morphology changes. Template-directed synthesis, electrochemical synthesis, and chemical synthesis are all applied here, but the morphology of palladium nanoparticles is li...

AI Technical Summary

Problems solved by technology

Template-directed synthesis, electrochemical synthesis, and chemical synthesis are all used here, but the morphology of palladium nanoparticles is limited to spherical, cubic, tetrahedral, octahedral, wire or rod structures, etc. The results of radial structures are very limited. Few and no studies on the high internal energy due to a large number of defects inside the radial structure

[0003] Radial structure, due to the existence of a large number of lattice boundaries, has a large amount of specific surface energy on the surface, and due to relaxation and recrystallization, it is often difficult to maintain this structure for a long time, so in practical applications, especially is less involved in catalysis

Images