Palladium-copper binary alloy nanometer material, preparation method thereof and application thereof of serving as catalyst for electrocatalytic reduction

Abstract

The invention discloses a palladium-copper binary alloy nanometer material. The average particle size is in a range of 3-5 nanometers; and the particle size distribution is less than 10 nanometers. A preparation method of the palladium-copper binary alloy nanometer material comprises the following steps: chlorine palladium acid sodium solution and copper chloride solution are taken; activated carbons and high-purity water are added for fully and uniformly mixing; sodium borohydride solution is added for an ice-water bath reaction; and after the reaction is finished, the washing and the drying are performed to obtain the palladium-copper binary alloy nanometer material. The invention designs the palladium-copper binary alloy nanometer material; the palladium-copper binary alloy nanometer material can serve as a catalyst for electrocatalytic reduction; the catalyst can be used for efficiently converting CO2 to formic acid and natural gas (including methane, carbon monoxide, hydrogen and few such hydrocarbons as ethane and ethylene), so that the method is convenient, the cost is low, and the effect is obvious; and CO2 is converted to chemicals with high additional values, so that the important practical significance on environmental protection and resource utilization is obvious.

Description

technical field [0001] The invention relates to a palladium-copper binary alloy nanomaterial, its preparation method and its electrocatalytic reduction of CO as a catalyst 2 Applications. Background technique [0002] As the main component of greenhouse gas, carbon dioxide has always been valued by the governments of various countries for its impact on the environment. At present, coal is the most widely used primary energy in my country, and how to scientifically control carbon dioxide emissions has become an important guarantee for sustainable development. At the same time, economic growth urgently needs to be supplemented by renewable energy, and carbon dioxide, as a cheap and abundant raw material, has an impressive development prospect. In recent years, with climate warming and increasing energy crisis, CO 2 The capture and transformation of carbon dioxide has attracted widespread attention from the international community, and has become a focus of attention and res...

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Problems solved by technology

[0004] However, in the prior art, CO 2 There are still many shortcomings in electrocatalytic reduction technology: CO 2 The kinetics of the reduction reaction are poor, the overpotential of the reaction is large, the utilization rate of electric energy is low, the stability of the working electrode is not enough, etc.

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