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Preparation method of nickel sulfide nanoparticles for preparing formic acid through electro-catalysis

A nanoparticle, nickel sulfide technology, applied in nickel sulfide, electrodes, electrolysis components, etc., can solve the problems of low formic acid output, low Faradaic efficiency, etc., and achieve the effect of increasing output

Pending Publication Date: 2022-06-28
CHENGDU UNIV
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Problems solved by technology

[0018] The purpose of the present invention is to provide a method for preparing nickel sulfide nanoparticles used in the electrocatalytic preparation of formic acid, so as to solve the technical problems of low yield and low Faradaic efficiency in the preparation of formic acid by using nickel-based non-noble metals as electrocatalysts

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  • Preparation method of nickel sulfide nanoparticles for preparing formic acid through electro-catalysis
  • Preparation method of nickel sulfide nanoparticles for preparing formic acid through electro-catalysis
  • Preparation method of nickel sulfide nanoparticles for preparing formic acid through electro-catalysis

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[0037]In order to better understand the purpose, structure and function of the present invention, a method for preparing nickel sulfide nanoparticles for electrocatalytic preparation of formic acid of the present invention is described below with reference to the accompanying drawings, on the basis of comparison with elemental metal nickel electrocatalytic materials. And the improvement of its electrocatalytic activity is described in further detail.

[0038] Based on this, the inventors use cheap metals as raw materials to precisely control the synthesis of NiS nanomaterials. NiS nanoparticles are divided into three steps.

[0039] First, i) a nickel-sulfur slurry is produced. Nickel element and sulfur powder were weighed in a 1:1 molar ratio (total 2 mmol) and added to a 10 ml glass bottle, and then 3.3 ml of ethylenediamine and 0.3 ml of ethanedithiol were added to the bottle in turn. The mixture was stirred at 750 rpm for 24 hours at room temperature. Long-time stirring...

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Abstract

The invention provides a preparation method of nickel sulfide nano-particles for preparing formic acid through electro-catalysis, which comprises the following steps: (1) preparing nickel-sulfur slurry: adding nickel elementary substance and sulfur powder into a container according to a molar ratio of 1: 1, and then sequentially adding ethidene diamine and ethanedithiol into the container to obtain a mixed solution; (2) solvent evaporation: filtering insoluble particles in the mixed solution obtained in the step (1) to obtain slurry; preheating a three-necked flask, and adding the slurry; carrying out heat preservation on the three-necked flask to obtain dry powder; grinding the dry powder into fine powder; and (3) powder annealing, wherein the fine powder collected in the step (2) is annealed under inert gas. The nickel sulfide nanoparticles prepared by the method solve the technical problems of low yield and low Faraday effect of formic acid prepared by using nickel-based non-noble metal as an electrocatalyst.

Description

technical field [0001] The invention belongs to the field of new energy materials, and in particular relates to a preparation method of nickel sulfide nanoparticles used for electrocatalytic preparation of formic acid. Background technique [0002] At present, the world economy mainly relies on non-renewable petroleum resources for operation, and its associated carbon-based compounds are the most important chemical products in the world, but some of its metabolites also cause serious pollution to the ecological environment. Therefore, the sustainable and efficient use, conversion and storage of other carbon-rich renewable energy sources is one of the effective alternatives. Among them, electrocatalytic conversion of biomass-derived chemicals has paved the way for this goal. In this global industrial transformation, as a kind of carbon circular economy, C1 small organic molecules represented by formic acid and methanol play a variety of important roles including raw material...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G53/11C25B3/07C25B11/065C25B11/075
CPCC01G53/11C25B3/07C25B11/065C25B11/075C01P2002/72C01P2002/80C01P2004/03C01P2004/04C01P2006/40Y02E60/50
Inventor 李军山田晰李露明
Owner CHENGDU UNIV
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