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A kind of electrolytic water catalyst supporting transition metal single atom and preparation method thereof

A transition metal, water electrolysis technology, applied in metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, chemical instruments and methods, etc., can solve the complicated preparation method, unfavorable mass production, limited application, etc problem, to achieve the effect of improved catalytic activity, good chemical stability and durability, high specific surface area and porosity

Active Publication Date: 2021-09-28
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

These preparation methods are relatively cumbersome, not conducive to mass production, and some methods require harsh conditions, which limits their application in actual production
[0004] So far, there are still many problems in the application of transition metal single-atom catalysts in the field of electrolysis of water to produce hydrogen. There are two main problems. One is the efficient synthesis and regulation of catalyst active components; metal single atom catalyst

Method used

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  • A kind of electrolytic water catalyst supporting transition metal single atom and preparation method thereof
  • A kind of electrolytic water catalyst supporting transition metal single atom and preparation method thereof
  • A kind of electrolytic water catalyst supporting transition metal single atom and preparation method thereof

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Effect test

Embodiment 1

[0030] (1) Mix 57 mg of iron phthalocyanine, 103 mg of phthalocyanine, and 7 mL of dimethylformamide, and stir at 30° C. for 0.5 h to obtain a uniform solution. Add 0.9 g of polyacrylonitrile to the above solution (the mass concentration of polyacrylonitrile is 12%), stir the mixture at 30°C for 5 hours to obtain an electrospinning solution, and then prepare the electrospinning solution into a phthalocyanine complex Material-coupled fiber mat, the spinning voltage is controlled at 5kV during electrospinning, the distance from the receiving device to the spinning needle is 4cm, and the solution flow rate is 0.01mL / min;

[0031] (2) Place the fiber mat coupled with phthalocyanine complexes in a corundum boat, place the corundum boat in the middle of the tube furnace, and pre-oxidize with air. , heated to 850°C, kept for 4h, and finally cooled to room temperature under the protection of inert gas to obtain the fiber-supported ferroelectric catalyst, which was named FePc / Pc-CNFs. ...

Embodiment 2

[0039] (1) Mix 57mg iron phthalocyanine, 103mg phthalocyanine, and 7mL DMF solution, and stir at 30°C for 0.5h to obtain a uniform solution. Add 0.9 g of polyacrylonitrile to the above solution (the mass concentration of polyacrylonitrile is 12%), stir the mixture at 30°C for 5 hours to obtain an electrospinning solution, and then prepare the electrospinning solution into a phthalocyanine complex Material-coupled fiber mat, the spinning voltage is controlled at 5kV during electrospinning, the distance from the receiving device to the spinning needle is 4cm, and the solution flow rate is 0.01mL / min;

[0040] (2) Place the fiber mat coupled with phthalocyanine complexes in a corundum boat, place the corundum boat in the middle of the tube furnace, and pre-oxidize with air. , heated to 750°C or 950°C, kept for 4h, and finally cooled to room temperature under the protection of inert gas, and two fiber-supported ferroelectric catalysts were obtained, named FePc / Pc-CNFs-750 and FePc...

Embodiment 3

[0045] (1) Mix 57mg iron phthalocyanine and 7mL DMF solution, stir at 30°C for 0.5h to obtain a uniform solution. Add 0.9 g of polyacrylonitrile to the above solution (the mass concentration of polyacrylonitrile is 12%), stir the mixture at 30°C for 5 hours to obtain an electrospinning solution, and then prepare the electrospinning solution into a phthalocyanine complex Material-coupled fiber mat, the spinning voltage is controlled at 5kV during electrospinning, the distance from the receiving device to the spinning needle is 4cm, and the solution flow rate is 0.01mL / min;

[0046] (2) Place the fiber mat coupled with phthalocyanine complexes in a corundum boat, place the corundum boat in the middle of the tube furnace, and pre-oxidize with air. , heated to 850°C, kept for 4h, and finally cooled to room temperature under the protection of inert gas to obtain the fiber-supported ferroelectric catalyst, which was named FePc(0:1)-CNFs.

[0047] The molar ratios of phthalocyanine ...

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Abstract

The invention discloses an electrolytic water catalyst supporting transition metal single atoms and a preparation method thereof, belonging to the field of electrocatalysis. The present invention utilizes electrospun fiber and phthalocyanine to jointly confine and synthesize highly dispersed transition metal single atoms. The electrolytic water catalyst is composed of a carrier and a catalytically active component. The carrier is an ultrafine carbon nanofiber. The catalytic The active component is a transition metal single atom. The fiber-loaded transition metal single atom electrolytic water catalyst prepared by the present invention has the characteristics of high active site performance and good dispersibility, has good hydrogen evolution activity in alkaline electrolytic water, and can be directly used as a self-supporting electrode material for electrocatalysis Hydrogen production.

Description

technical field [0001] The invention relates to an electrolytic water catalyst loaded with transition metal single atoms and a preparation method thereof, belonging to the electrocatalytic technology. Background technique [0002] With the continuous deepening of industrialization and the continuous consumption of fossil fuels, human beings are facing the huge dilemma of global energy shortage. The development of new energy is an important way to solve the current energy crisis. Hydrogen energy, as a clean energy, has received extensive attention. Hydrogen production by electrolysis of water is one of the most efficient, convenient and promising methods for producing hydrogen. Its main mechanism involves two electrode reactions, namely the hydrogen evolution reaction at the cathode and the oxygen evolution reaction at the anode. In recent years, how to design and develop electrode catalysts with excellent activity, good stability, and high cost performance has become the bi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25B11/031C25B11/052C25B11/057C25B11/075C25B1/04
CPCB01J23/72B01J23/745B01J23/75C25B1/04C25B11/04Y02E60/36
Inventor 杜明亮陆双龙朱罕段芳潘星星胡振斌
Owner JIANGNAN UNIV
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