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Two-dimensional conductive metallic organic compound array, preparation method and application

A technology of organic compounds and conductive metals, which is applied in the field of nanomaterial preparation, can solve the problems of preparation of two-dimensional conductive metal-organic compound arrays that have not been reported, unfavorable charge and material transport, poor conductivity, etc., and achieve excellent electrocatalytic total hydrolysis activity , Raw materials are cheap and easy to get, the effect of overcoming poor conductivity

Active Publication Date: 2019-12-20
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, conventional bulk metal-organic compounds have poor electrical conductivity (~10 -10 S m -1 ) and small pore size (less than 2 nm), and are generally prepared in powder form, which is very unfavorable to the transport of charges and substances, so it is considered to be a poor performance electrochemical catalyst
[0004] However, so far, the preparation of two-dimensional conductive metal-organic compound arrays has not been reported

Method used

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  • Two-dimensional conductive metallic organic compound array, preparation method and application
  • Two-dimensional conductive metallic organic compound array, preparation method and application
  • Two-dimensional conductive metallic organic compound array, preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Step 1: Dissolving 50mg of 2,5-thiophenedicarboxylic acid ligand and 50mg of ferrous chloride in ethanol;

[0041] Step 2: Foam nickel is placed in the solution described in step 1, in a closed container for 150 o C reaction 12h;

[0042] Step 3: washing and drying the obtained product to obtain an iron bimetallic (50 mg ferrous chloride) two-dimensional conductive metal organic compound array material.

[0043] The field emission scanning electron microscope image and element distribution diagram of the obtained nickel-iron bimetallic (50mg ferrous chloride) two-dimensional conductive metal-organic compound array are as follows figure 2 As shown, it indicates that the material is an ultrathin two-dimensional array, and each element is uniformly distributed. X-ray diffraction as Figure 8 (a), indicating that it is polycrystalline; Fourier transform infrared spectroscopy shows Figure 8 As shown in (b), 2972 ​​and 2887cm -1 The weak peak at corresponds to the C-H ...

Embodiment 2

[0047] Step 1: Dissolving 50mg of 2,5-thiophenedicarboxylic acid ligand and 50mg of nickel acetate in ethanol;

[0048] Step 2: Foam nickel is placed in the solution described in step 1, in a closed container for 150 o C reaction 12h;

[0049] Step 3: washing and drying the obtained product to obtain a nickel two-dimensional conductive metal organic compound array material.

[0050] The field emission scanning electron micrograph and element distribution diagram of the obtained nickel two-dimensional conductive metal organic compound array are as follows: image 3 As shown in , it shows that the material is an ultrathin two-dimensional array, and the elements are evenly distributed; its electrical conductivity is between 23 and 40 S m -1 , indicating that it has good electrical conductivity. The linear sweep voltammetry curves of oxygen evolution reaction and hydrogen evolution reaction are as follows Figure 9 (a,c), at a current density of 10mA cm -2 The overpotentials ...

Embodiment 3

[0052] Step 1: Dissolving 50mg of 2,5-thiophene dicarboxylic acid ligand and 20mg of ferrous chloride in ethanol;

[0053] Step 2: Foam nickel is placed in the solution described in step 1, in a closed container for 150 o C reaction 12h;

[0054] Step 3: washing and drying the obtained product to obtain a nickel-iron bimetallic (20 mg ferrous chloride) two-dimensional conductive metal organic compound array material.

[0055] The field emission scanning electron microscope image and element distribution diagram of the obtained nickel-iron bimetallic (20mg ferrous chloride) two-dimensional conductive metal-organic compound array are as follows Figure 4 As shown, it indicates that the material is an ultrathin two-dimensional array, and each element is uniformly distributed. The linear sweep voltammetry curves of oxygen evolution reaction and hydrogen evolution reaction are as follows Figure 9 (a,c), at a current density of 10mA cm -2 The overpotentials were 253mV (oxygen e...

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Abstract

The invention discloses a two-dimensional conductive metallic organic compound array material, a preparation method and application. The material comprises a three-dimensional substrate as a carrier and two-dimensional conductive metallic organic compound nanosheets grown on the three-dimensional substrate, wherein the conductive nanosheets are metallic organic compound nanosheets of nickel, ferronickel, nickel manganese, nickel cobalt, nickel tantalum and 2,5-thiophene dicarboxylic acid when the three-dimensional substrate is foamed nickel; when the three-dimensional substrate is foamed iron,the conductive nanosheets are metallic organic compound nanosheets of ferronickel, ferromanganese, ferrocobalt, ferrobismuth and 2,5-thiophene dicarboxylic acid; and when the three-dimensional substrate is foamed copper, the conductive nanosheets are metallic organic compound nanosheets of copper bismuth and 2,5-thiophene dicarboxylic acid. The array has excellent conductivity and a regularly arranged two-dimensional array structure, is capable of implementing charge and substance conduction effectively, and thus has wide application prospects in fields such as energy and catalysts.

Description

technical field [0001] The invention relates to a preparation method of nanomaterials, in particular to a two-dimensional conductive metal organic compound array and a preparation method thereof, belonging to the field of preparation of nanomaterials. Background technique [0002] In recent years, severe environmental problems and climate change have put forward an urgent demand for the development of clean and renewable energy. Among them, electrolysis of water technology can convert electric energy generated by solar energy, wind energy, etc. into hydrogen for large-scale storage, laying the foundation for the widespread use of renewable energy. However, the current water electrolysis technology suffers from some important challenges: high overpotential, noble metal catalysts, and poor electrode stability, etc. Therefore, it is urgent to develop new high-efficiency, low-cost and stable catalysts to promote the large-scale application of water electrolysis technology. [...

Claims

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Application Information

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IPC IPC(8): B01J31/22C25B11/06C25B1/04
CPCB01J31/223C25B11/04C25B1/04B01J2531/842B01J2531/847B01J35/33Y02E60/36Y02P20/133
Inventor 陈胜孙运通朱俊武蒋丽丽汪信
Owner NANJING UNIV OF SCI & TECH
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