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Method of synchronously synthesizing organic matter and metal compound nanoparticles based on MOFs material

A technology of metal compounds and nanoparticles, applied in nitrogen-metal/silicon/boron binary compounds, organic chemistry, nitrogen compounds, etc., can solve the problem of loss of organic ligands, high cost, poor material conductivity and electrochemical performance, etc. problem, to achieve uniform size, avoid synthesis process, and good reproducibility

Active Publication Date: 2017-06-13
NANKAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to solve the existing two problems: the relatively large size of the synthesized compound nanoparticles leads to poor electrical conductivity and electrochemical performance of the material; Churn leads to costly problems

Method used

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  • Method of synchronously synthesizing organic matter and metal compound nanoparticles based on MOFs material
  • Method of synchronously synthesizing organic matter and metal compound nanoparticles based on MOFs material
  • Method of synchronously synthesizing organic matter and metal compound nanoparticles based on MOFs material

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specific Embodiment approach 1

[0032] Specific implementation mode 1: A method for synchronously synthesizing organic matter and nanoparticles using MOFs as precursors, specifically as follows

[0033] 1) Using metal salt solution and carboxylic acid ligands or imidazole ligands to synthesize materials with metal organic framework structures.

[0034] The synthesis method includes solvothermal method, diffusion method and microwave method.

[0035] The metal-organic framework materials include reported and unreported ones, and the order degree of their structures reaches more than 80%.

[0036] The metal nano compound particles are V, Co, Ni, Fe, Zn, Cu, Cd or Mg; or V, Cu, Zn among them.

[0037] The sublimation temperature of the ligand is 200-1500°C.

[0038] 2) Place the MOFs obtained in step 1) in the temperature control zone of the tube furnace (position No. 1), and place a solid recovery device (position No. 2) at the cooling place of the gas outlet. Min heating, cooling speed, heating to 200 ~ 15...

Embodiment 1

[0045] Embodiment 1: A method for synchronously synthesizing organic matter and nanoparticles based on MOFs materials, specifically as follows:

[0046] 1) The vanadium-based MOFs material synthesized by vanadium chloride and 1,4-naphthalene dicarboxylic acid is used as a precursor. The structural formula of MOFs is [V(OH)(NDC) XG]n, G represents the guest molecule, NDC represents 1, 4-naphthalene dicarboxylic acid, unit cell parameters (α=β=γ=90°, ).

[0047] 2) Place the vanadium-based MOFs obtained in step 1) in the temperature control zone of the tube furnace (position No. 1), and place a solid recovery device (position No. 2) at the cooling place of the gas outlet. Under the atmosphere of high-purity ammonia, the 2°C / min heating, 2°C / min cooling rate, heating up to 600°C for 5 hours. When cooled to room temperature, vanadium nitride nanoparticles are obtained at position 1, and organic compounds in which carboxylic acid in the ligand is replaced by cyano are recovered ...

Embodiment 2

[0050] A method for synchronously synthesizing organic matter and nanoparticles using MOFs materials as precursors. The difference between this embodiment and specific embodiment 1 is that the constant temperature in step 2) is 700°C. Other steps and parameter are identical with specific embodiment 1.

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Abstract

The invention relates to a method of synchronously synthesizing an organic matter and metal compound nanoparticles based on an MOFs material. The invention aims to solve the problem of recycling an organic ligand when the metal compound nanoparticles are synthesized from MOFs through high-temperature carbonization and pyrolysis. On the one hand, the metal nanoparticles which are small in size and uniform are synthesized by means of a range limiting effect of the MOFs and on the other hand, the organic ligand is reconstructed along with a solid phase organic reaction, so that the problems that the program is complex, the cost is high and dimension is not uniform in an existing process of preparing the metal compound nanoparticles are solved, and meanwhile, the organic ligand which is cheap and complex in structure is recycled, so that generation of greenhouse gas and harmful gas is avoided, and the cost is greatly lowered. The method provided by the invention mainly employs the solid organic reaction of synthesizing the metal compound nanoparticles and the organic ligand by means of a metal organic framework.

Description

technical field [0001] The invention relates to a method for synchronously synthesizing organic matter and nanometer particles using MOFs materials as precursors. Background technique [0002] Metal-organic frameworks (MOFs) are a class of organic-inorganic hybrid materials constructed from organic ligands and inorganic metal units. Its unique pore and structural order make it exhibit excellent performance in both gas storage and catalytic applications. In recent years, an emerging force: the use of MOFs for high-temperature pyrolysis and carbonization of precursors to synthesize inorganic nanomaterials has gradually shown an irreplaceable position. Using MOFs as precursors to synthesize inorganic materials can not only synthesize highly dispersed metal nanoparticles and carbon composite materials through confinement, but also improve the poor conductivity of MOFs themselves, and then introduce MOFs materials into the field of electrochemical catalysis and energy storage. ...

Claims

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Application Information

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IPC IPC(8): C01B21/06B82Y40/00C07C253/22C07C255/52
CPCC01B21/0617C01P2002/72C01P2002/82C01P2002/86C01P2004/03C01P2004/04C01P2004/64C07C253/22C07C255/52
Inventor 卜显和孔令俊陈坤王丹红
Owner NANKAI UNIV
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