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Nano-scale metal-organic framework material and preparation method thereof

A metal-organic framework, nano-scale technology is applied in the field of preparation of new metal-organic framework materials, and achieves the effects of simple preparation process and strong controllability of reaction conditions

Inactive Publication Date: 2019-07-12
SHANGHAI INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, how to control the growth of micro-nano MOFs crystals in a given reaction system to adjust the size and shape is a challenging task.

Method used

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  • Nano-scale metal-organic framework material and preparation method thereof
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  • Nano-scale metal-organic framework material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A method for preparing a nanoscale metal-organic framework material, the specific steps are:

[0026] Step 1: Prepare A solution: at room temperature, dissolve 0.3mmol HIA in 10mL deionized water, add 0.6mmol NaOH, and then add 0.3mmol Fe(ClO 4 ) 2 , stirring constantly with a mixer.

[0027] Step 2: Prepare solution B: Dissolve 0.3mmol 1,4-bix in 10mL methanol at room temperature, seal it, and keep stirring with a stirrer.

[0028] Step 3: Add solution B dropwise to solution A under constant stirring, react with a stirrer for 2 hours, then filter with suction, dry in an oven at 60°C for 30 minutes, and obtain nano-scale metal Organic framework materials, single crystal X-ray diffraction results such as image 3 .

[0029] figure 1 For the TEM figure that embodiment 1 makes sample, from figure 1 It can be seen that the obtained crystals are nanospheres with a size of about 100 nm, agglomeration, and general dispersion.

Embodiment 2

[0031] Similar to Example 1, the difference is: the reaction time in step 3 is controlled at 4h.

[0032] The results show that the obtained crystals are nanospheres with a size of about 200 nm, which are larger than those obtained in Example 1, and the agglomeration phenomenon also exists.

Embodiment 3

[0034] Similar to Example 1, the difference is that: Step 2 is: Prepare B solution: Dissolve 0.3mmol 1,4-bix in 10mL methanol at room temperature, add surfactant CTAB in an amount of 0.015%wt, seal , stirring constantly with a mixer.

[0035] Such as figure 2 As shown, the results show that the obtained crystals are nanospheres with a size of about 100 nm, which is better in dispersibility than the crystals obtained in Example 1.

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Abstract

The invention provides a nano-scale metal-organic framework material and a preparation method thereof. The preparation method of the nano-scale metal-organic framework material comprises the followingsteps: 1, preparing a solution A: dissolving an organic acid in deionized water at room temperature, adding NaOH, adding a ferrous salt, and performing continuous stirring by using a stirrer; 2, preparing a solution B: dissolving 1,4-bix in methanol at room temperature, sealing the obtained solution, and performing continuous stirring by using the stirrer, wherein a surfactant is added or not added after the dissolving before sealing; and 3, dropwise adding the solution B to the solution A, performing a reaction while continuously stirring, carrying out suction filtration, and drying the obtained reaction product in an oven to obtain the nano-scale metal-organic framework material.

Description

technical field [0001] The invention relates to a preparation method of a novel metal organic framework material, in particular to a preparation method of a novel nanoscale metal organic framework material Fe(HIA)(1,4-bix) at room temperature. Background technique [0002] Metal-organic frameworks (Metal-Organic Frameworks, MOFs) refer to a class of porous crystalline materials with regular network space structures, which are composed of inorganic metal centers (metal ions or metal clusters) and bridging organic ligands in a certain way. The metal ions and various rigid bridging organic ligands that form this porous framework crystal material are not fixed, so metal organic framework materials with different pore sizes and properties can be designed and synthesized. Metal-organic framework materials have flexible coordination nodes and coordination modes, and as functional carriers, they provide possibilities for optical, electrical, magnetic, catalytic and other physical an...

Claims

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Application Information

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IPC IPC(8): C08G83/00
CPCC08G83/008
Inventor 叶静方浩言孙成蔡文武赵立超陈桂娥毛修龙
Owner SHANGHAI INST OF TECH