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Two-dimensional bimetallic site conductive metal organic framework material and preparation method thereof

A conductive metal, organic framework technology, applied in chemical instruments and methods, organic compound/hydride/coordination complex catalysts, electrodes, etc., can solve problems such as difficulty in generating electrocatalytic activity, and achieve good electrochemical stability. , The method is simple and green, and the preparation conditions are mild.

Active Publication Date: 2020-05-15
SHAANXI NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In theoretical and experimental studies, the metal atoms in the M-N4 bond still maintain their original oxidation state during the electrocatalytic process, making it difficult to generate effective electrocatalytic activity.

Method used

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  • Two-dimensional bimetallic site conductive metal organic framework material and preparation method thereof
  • Two-dimensional bimetallic site conductive metal organic framework material and preparation method thereof
  • Two-dimensional bimetallic site conductive metal organic framework material and preparation method thereof

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Effect test

Embodiment 1

[0031] 1. Preparation of nickel-hexaaminohexaazabenzene

[0032] Dissolve 162mg (0.684mmol) of nickel chloride in 30mL of ethanol, adjust the pH to 4 with hydrochloric acid, then add 100mg (0.210mmol) of hexaaminohexaazabenzene, and reflux in a water bath at 70°C for 4 hours. After the reaction The temperature was lowered, the obtained solution was rotary evaporated to dryness, and the obtained solid was dissolved in ethanol for recrystallization, and the obtained black solid was dried on a watch glass to obtain nickel-hexaaminohexaazabenzene powder.

[0033] 2. Two-dimensional bimetallic dot-site conductive metal-organic framework materials

[0034] Dissolve 51mg (0.216mmol) of nickel chloride in 40mL of deionized water, add 2mL of ammonia water, and stir evenly at 65°C in an air environment, then add 100mg (0.147mmol) of nickel-hexaaminohexaazabenzene powder to it, continue Stir and reflux at this temperature for 2 hours. After the resulting solution was concentrated under...

Embodiment 2

[0036] In step 1 of this embodiment, the nickel chloride in step 1 of embodiment 1 is replaced with equimolar cobalt chloride to obtain cobalt-hexaaminohexaazabenzene powder, and then prepared in step 2 with the structural formula Ni 3 (Co 3 ·HAHATN) 2 Two-dimensional bimetallic point-site conductive metal-organic framework materials (see Figure 5 ), which belongs to the hexagonal crystal system, P6 / mmm space group, and the unit cell parameters are: α=90°, β=90°, γ=120°.

Embodiment 3

[0038] In step 1 of this embodiment, the nickel chloride in step 1 of embodiment 1 is replaced with equimolar copper chloride to obtain copper-hexaaminohexaazabenzene powder, and then prepared in step 2 with the structural formula of Ni 3 (Cu 3 ·HAHATN) 2 Two-dimensional bimetallic point-site conductive metal-organic framework materials (see Figure 6 ), which belongs to the hexagonal crystal system, P6 / mmm space group, and the unit cell parameters are: α=90°, β=90°, γ=120°.

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Abstract

The invention discloses a two-dimensional bimetallic site conductive metal organic framework material and a preparation method thereof. The structural unit of the material is M23(M13.HAHATN)2, whereinin the formula, M1 and M2 in the formula represent any one of Ni, Cu and Co, and HAHATN represents hexaamino hexaazabenzene hexavalent anions losing six hydrogen atoms. The two-dimensional conductiveMOF with additional metal sites is constructed through two-step selective complexing reaction of double-site conjugated organic ligand molecules. The method is simple and green, the preparation method is simple, the preparation conditions are mild, the prepared conductive MOF material has an ultrathin and stable rigid two-dimensional structure and an expanded in-plane mesoporous structure, highlyunsaturated variable-valence transition metal sites are exposed in pore channels of the conductive MOF material, and the conductive MOF material has potential application value in new energy application aspects such as electro-catalysis, photocatalysis, supercapacitors and lithium ion batteries. The method provided by the invention can also be used for preparing a multi-transition metal complexedtwo-dimensional conductive MOF material by regulating and controlling the chemical composition of ligand molecules.

Description

technical field [0001] The invention belongs to the technical field of metal organic framework materials, and in particular relates to a bimetallic point-site conductive metal organic framework material and a preparation method of the material. Background technique [0002] Metal-organic framework (MOF) materials are porous materials composed of metal nodes and multiple organic linkers. This unique structure not only brings a large surface area, but also exposes each metal atom as an active site in the pores of the framework, which has potential applications such as gas separation, catalysis, and detection. In addition, the frame structure of MOF has great controllability, and MOF materials with specific structures can be designed or modified according to different needs. These properties make MOF materials the heterogeneous catalysts of choice for various reaction types. However, due to the limitation of chemical structure, MOF materials can only exhibit low charge transf...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/18C25B1/04C25B11/06
CPCB01J31/1691B01J31/1815C25B1/04B01J2531/847B01J2531/845B01J2531/16C25B11/075B01J35/33Y02E60/50
Inventor 黄昊张颖邹永瑾杨楠赵心毓
Owner SHAANXI NORMAL UNIV
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