Method for preparing novel carbon nano-fiber platinum catalyst

Abstract

The invention relates to a method for preparing novel carbon nano-fiber platinum catalyst, belonging to the field of nano-composite and catalysis. The preparation method comprises the steps as follows: acid-mixing disposal is carried out on the surface of the carbon nano-fiber; a polar group is led in the surface of the carbon fiber so as to form a generation site for Pt nano-particle; furthermore, the method adopts a chemical reduction method of glycol to prepare composite of Pt / carbon nano-fiber with uniform distribution of particle; the particle size of the Pt nano-particle is 3-5nm and the content of Pt is 10-40wt%; the Pt is uniformly distributed on the surface of the carrier; the method has good application prospect on ion membrane electrolyzer or fuel cell, thus pushing the modernized industrial development.

Description

technical field

[0001] The invention discloses a preparation method of a novel nano-carbon fiber-supported platinum catalyst, which belongs to the field of nano-composite materials and electrocatalysis. Background technique

[0002] Due to their good catalytic properties, transition metal nanoparticles have broad application prospects in the field of chemical catalysis or electrochemical catalysis. However, metal nanoparticles are easy to agglomerate and difficult to disperse, which reduces their catalytic efficiency and affects the application of transition metal nanoparticles in the field of catalysis. So far, the method of loading nanoparticles on the surface of the carrier is mainly used to avoid agglomeration of nanoparticles and increase their specific surface area, thereby improving their catalytic efficiency. Usually, the carrier is silica powder, aluminum oxide powder, carbon black powder and powdery carrier. However, due to the fact that the carrier is mostly pow...

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