Load-type monoatomic catalyst and preparation method thereof

Abstract

The invention provides a load-type monoatomic catalyst. The catalyst is formed by uniformly loading monodispersed metal atoms on the surface of a nano substrate material. A preparation method thereofcomprises the following steps: in an electrolyte solution containing metal salt, performing electrochemical deposition by using a three-electrode system, using a glassy carbon electrode loaded with the nano substrate material as a working electrode, using a graphite rod as a counter electrode, using a silver/silver chloride electrode as a reference electrode, performing linear volt-ampere scanning, enabling the metal atoms to be monodispersely and uniformly deposited on the nano substrate material, to obtain the load-type monoatomic catalyst. The load-type monoatomic catalyst is capable of, based on electro-deposition, constructing a monoatomic structure, through an electro-deposition method, rapidly, efficiently, and controllably depositing single atoms, and realizing deposition of positive and negative electrodes, and the obtained load-type monoatomic catalyst has important significance to a general application in the catalytic and particle physical field.

Description

technical field [0001] The invention relates to the technical field of supported single-atom catalysts, in particular to a supported single-atom catalyst and a preparation method thereof. Background technique [0002] The emerging single-atom structure is obtained by depositing individual metal atoms on the substrate material independently. A series of characteristics such as synergy, especially in the field of catalysis. At present, single-atom catalysts have shown excellent activity, selectivity and stability in a series of reactions, such as water-gas shift, hydrogenation, water electrolysis, oxygen reduction, etc., and the metal loading can be effectively reduced by designing single-atom catalysts , improve atomic utilization and save costs. In addition, the single-atom structure in single-atom catalysts also provides a platform for particle physics research on atomic models. However, the current methods for synthesizing single-atom catalysts generally have problems s...

AI Technical Summary

Problems solved by technology

However, the current methods for synthesizing single-atom catalysts generally have problems such as low loading capacity, poor stability, complex procedures, and poor synthesis controllability. The development of convenient and effective single-atom catalyst synthesis methods is of great significance in the field of catalysis.

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