A kind of nimn MOF and its preparation method and application

A naphthalene dicarboxylic acid and group technology, applied in the field of NiMnMOF and its preparation, can solve the problems of complex preparation process and unfriendly environment, and achieve the effects of adjustable specific surface area, environmental friendliness and low reaction temperature

Active Publication Date: 2021-08-13
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to overcome the shortcomings of the above-mentioned prior art, the object of the present invention is to provide a NiMn MOF and its preparation method and application, to solve the problems of unfriendly environment caused by the use of organic solvents in the existing preparation methods and the complicated preparation process caused by the addition of surfactants. question

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  • A kind of nimn MOF and its preparation method and application
  • A kind of nimn MOF and its preparation method and application
  • A kind of nimn MOF and its preparation method and application

Examples

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Embodiment 1

[0038] A preparation method of NiMn MOF, comprising the following steps:

[0039] 1) Mix 2,6-naphthalene dicarboxylic acid and deionized water at a ratio of 0.05:1, adjust the pH value to 8, and obtain solution A by ultrasonication for 30 minutes;

[0040] 2) Add nickel nitrate and manganese acetate into solution A according to the ratio of the amount of substances of 1:1.5, wherein the ratio of the amount of nickel nitrate to 2,6-naphthalene dicarboxylic acid is 1:2, and the mixture is obtained by ultrasonication for 30 minutes Solution B;

[0041] 3) Transfer the mixed solution B to the reaction kettle and put it into an oven, and conduct a hydrothermal reaction at 80°C for 5 hours. After the reaction, filter with suction, wash with deionized water three times, and freeze-dry to obtain the linear manganese MOF growth flake nickel MOF Bimetallic MOFs.

[0042] see figure 1 , the bimetallic MOF prepared by the hydrothermal reaction in this example is NiMn MOF in which a lin...

Embodiment 2

[0044] A preparation method of NiMn MOF, comprising the following steps:

[0045] 1) Mix 2,6-naphthalene dicarboxylic acid and deionized water at a ratio of 0.1:1, adjust the pH value to 9, and obtain solution A by ultrasonication for 30 minutes;

[0046] 2) Add nickel acetate and manganese acetate into solution A according to the ratio of the amount of substances of 1:2, wherein the ratio of the amount of nickel acetate to 2,6-naphthalene dicarboxylic acid is 1:2.5, and the mixture is obtained by ultrasonication for 30 minutes Solution B;

[0047] 3) Transfer the mixed solution B to the reaction kettle and put it in an oven, and conduct a hydrothermal reaction at 100°C for 5 hours. After the reaction, filter with suction, wash with deionized water three times, and freeze-dry to obtain a linear strip-shaped manganese MOF-bound sheet Bimetallic MOF of nickel MOF.

[0048] The NiMn MOF prepared by the hydrothermal reaction in this example is a NiMn MOF in which a linear strip-...

Embodiment 3

[0050] A preparation method of NiMn MOF, comprising the following steps:

[0051] 1) Mix dipotassium 1,5-naphthalene dicarboxylate and deionized water at a ratio of 0.15:1, adjust the pH value to 10, and obtain solution A by ultrasonication for 30 minutes;

[0052] 2) Add nickel sulfate and manganese sulfate to solution A according to the ratio of the amount of substances of 1:1.6, wherein the ratio of the amount of nickel sulfate to dipotassium 1,5-naphthalene dicarboxylate is 1:2.2, ultrasonic for 30min Obtain mixed solution B;

[0053] 3) Transfer the mixed solution B to the reaction kettle and put it in an oven, and conduct a hydrothermal reaction at 90°C for 10 hours. After the reaction, filter with suction, wash with deionized water three times, and freeze-dry to obtain linear strip-shaped manganese MOF growth flakes. Bimetallic MOF of nickel MOF. The NiMn MOF prepared by the hydrothermal reaction in this example is a NiMn MOF in which a linear strip-shaped manganese M...

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Abstract

The invention discloses a NiMn MOF and its preparation method and application. Using nickel salts, manganese salts and organic acids / organic acid salts containing naphthalene dicarboxylic acid as raw materials, only deionized water is used as a solvent, and through a hydrothermal method, Fabrication of heterojunction composite MOFs with linear ribbon-like Mn MOF grown on sheet-like Ni MOF. The NiMn MOF prepared by this method has the characteristics of controllable morphology and composition. This method does not need to add templates or surfactants, and has the advantages of low reaction temperature, simple operation and easy control, and environmental friendliness.

Description

technical field [0001] The invention belongs to the technical field of new materials, and relates to a preparation method of a nanometer material and a metal-organic framework compound (MOF), in particular to a NiMn MOF, a preparation method and an application thereof. Background technique [0002] Metal-organic frameworks (MOFs) are a new class of crystalline materials with high specific surface area, large porosity and coordination structure diversity formed by self-assembly of metal ion clusters and organic ligands. MOF materials contain covalent bonds. , Coordination bonds and intermolecular forces, and full of design in the synthesis method, often show some unique physical and chemical properties. Centered on active metal ions, MOF materials can be directly applied in supercapacitors, gas storage, catalysis, sensors, drug carriers and other fields. Due to the special morphology and porous structure of MOF materials, they are often used as precursors to prepare porous c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G83/00C01G53/11C01G53/04C01G45/00C01G45/02C01B25/08C01B32/15B82Y30/00B82Y40/00B22F9/20
CPCB22F9/20B82Y30/00B82Y40/00C01B25/08C01G45/00C01G45/02C01G53/04C01G53/11C01P2004/80C08G83/008C01B32/15
Inventor 马明波杜显锋熊礼龙
Owner XI AN JIAOTONG UNIV
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