Changchun Yinghua invented palladium nano film and palladium/platinum nano film preparation method

2021-04-25

As an important catalyst, palladium-based nanomaterials have become a research hotspot in the field of organic synthesis, fuel cells and other fields, and have been increasingly valued by industrial production. With the development of nanomaterials, the self-assembly of one-dimensional nanomaterials into two-dimensional nanofilms that can exist independently has attracted a great deal of interest from researchers.

At present, the commonly used preparation methods tend to take a long time, or take a long time, but the quality of the samples is poor. Therefore, it is still a great challenge to find a method for rapidly preparing high-quality and independent palladium nano-films. In addition, palladium-based bimetallic nanomaterials with high catalytic activity, especially palladium/platinum bimetallic nanomaterials, have also received extensive attention from researchers.

Recently, Jin Yongdong, a researcher at the Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, invented the preparation method of palladium nano-films and the preparation method of palladium/platinum nano-films, which was recently authorized by the national invention patent.

The invention provides a method for preparing a palladium nano film, which is prepared by adding hydroxylamine hydrochloride to a mixed solution of palladium chloride and sodium citrate to obtain a palladium nano film after the reaction. Using sodium citrate as a protective agent and hydroxylamine hydrochloride as a reducing agent, palladium nanoparticles were obtained by the reduction of palladium chloride, and then the synthesized palladium nanoparticles were rapidly self-assembled at the water-air interface to form an independent palladium nano-film. Compared with the prior art, the preparation method has simple preparation steps and short time consumption. The prepared palladium nano film has good quality and has high activity and stability for the oxidation reaction of alcohols (as shown in FIG. 1 ).

At the same time, the invention also provides a preparation method of palladium/platinum nanometer thin film. The preparation method has simple preparation steps, short time consumption, good film quality, and the prepared palladium/platinum bimetal nanometer thin film catalyzes the oxidation reaction of alcohols. With high activity and stability (as shown in Figure 2).