Method for preparing zirconium metal organic framework (Zr-MOF) nanotubes

A metal-organic framework, nanotube technology, applied in nanotechnology, chemical instruments and methods, organic compound/hydride/coordination complex catalysts, etc., to achieve good chemical stability, excellent photoluminescence performance, and simple steps. Effect

Active Publication Date: 2020-02-14
NAT UNIV OF DEFENSE TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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However, the disclosed technology for preparing zirc

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  • Method for preparing zirconium metal organic framework (Zr-MOF) nanotubes
  • Method for preparing zirconium metal organic framework (Zr-MOF) nanotubes
  • Method for preparing zirconium metal organic framework (Zr-MOF) nanotubes

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Example Embodiment

[0025] A method for preparing zirconium metal organic framework nanotubes of the present invention includes the following steps:

[0026] Dissolve the zirconium metal salt in the solvent DMF, add 1,3,6,8-tetrakis(4-carboxyphenyl)pyrene and the regulator, and then perform ultrasonic or stirring dispersion, and then subject the mixture obtained after the dispersion treatment to solvothermal After the reaction is completed, it is cooled to room temperature, washed and dried to a completely dry state to obtain Zr-MOF nanotubes. The method of the present invention avoids the need to use an additional template for the traditional preparation of MOF nanotubes with complex structures, and can directly obtain Zr-MOF nanotubes through a one-step reaction.

[0027] The metal salt is preferably a metal salt of zirconium (IV), such as zirconium chloride, zirconium oxychloride and the like.

[0028] The ratio of the amount of the zirconium metal salt and the substance of 1,3,6,8-tetrakis(4-carbox...

Example Embodiment

[0037] Example 1:

[0038] A method for preparing zirconium metal organic framework nanotubes of the present invention includes the following steps:

[0039] Weigh 135mg ZrOCl 2 ·8H 2 O (0.42mmol), 191mg 1,3,6,8-tetrakis (4-carboxybenzene) pyrene (0.28mmol) in a 100mL microwave reactor, add 10mL N,N-dimethylformamide, 0.2mL formic acid and 0.3mL of deionized water, stirred to dissolve fully, placed in a microwave reactor, microwave solvothermal reaction at 120 ℃ for 90 minutes, after cooling to room temperature, the resulting product was subjected to N,N-dimethylformamide, ethanol, deionized After washing with water three times, and vacuum drying at 60°C, Zr-MOF nanotubes are obtained.

Example Embodiment

[0040] Example 2:

[0041] A method for preparing zirconium metal organic framework nanotubes of the present invention includes the following steps:

[0042] Add 53.7mg ZrOCl 2 ·8H 2 O was dissolved in 1mL DMF, and after it was completely dissolved, 99.7mg of 1,3,6,8-tetrakis(4-carboxyphenyl)pyrene was added, then 71.2mg of benzoic acid and 25μL of deionized water were added and dispersed 15 Minutes later, the mixture was reacted under solvothermal conditions at 120°C for 24 hours. After cooling to room temperature, the resulting product was washed with DMF, washed with absolute ethanol and water three times, and then dispersed in water. Finally, it is dried in a freeze dryer until it is completely dry to obtain Zr-MOF nanotubes.

[0043] The characterization data of the nanotubes obtained in Example 2 are as follows Figure 1-3 Shown. figure 1 with figure 2 The microscopic morphology of the product under magnification of 10,000 and 20,000 times respectively. It can be seen that t...

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Abstract

The invention discloses a method for preparing zirconium metal organic framework (Zr-MOF) nanotubes. The method comprises the steps as follows: dissolving zirconium metal salt in a solvent DMF, adding1,3,6,8-tetra(4-carboxylbenzene)pyrene and a regulator, then, performing dispersion, carrying out solvothermal reaction on a mixture obtained by dispersion treatment, after the reaction is completed,cooling a product to room temperature, and performing drying after washing to obtain the Zr-MOF nanotubes. The method adopts a simple process, requires no template and can obtain the Zr-MOF nanotubesby a one-step solvothermal method. The nanotubes obtained by the method have good chemical stability, thermal stability, humidity stability and excellent photoluminescence performance, and as the nanotubes are composed of nanoparticles, the nanotubes facilitate diffusion transfer of substances inside and can be applied to rapid fluorescent response detection of guest molecules, catalysis of hydrolysis of organic phosphorus compounds and various Lewis acid catalytic reactions.

Description

technical field [0001] The invention belongs to the field of metal organic framework material preparation and relates to a method for preparing zirconium metal organic framework nanotubes. Background technique [0002] Metal-organic frameworks (MOFs) are organic-inorganic hybrid crystalline materials formed by coordination bonds between metal nodes and bridging organic ligands. Due to the particularity of its skeleton structure, it has excellent properties such as large surface area, high porosity and tunable pore structure, good thermal stability and high chemical tunability. These characteristics have attracted scientists to devote themselves to the synthesis and application of MOFs. In addition to the development of novel MOFs, the synthesis of nanostructured materials of various MOFs has attracted increasing attention, as nanoscale metal-organic frameworks (NMOFs) have shown superior performance compared with their bulk MOFs. So far, many nanoscale morphologies have be...

Claims

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Application Information

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IPC IPC(8): C08G83/00C09K11/06B82Y40/00B01J31/22G01N21/64
CPCB01J31/1691B01J31/2239B01J2531/48B82Y40/00C08G83/008C09K11/06C09K2211/183G01N21/6428
Inventor 陶呈安黄雨柔王芳黄坚王建方邹晓蓉李玉姣阳绪衡
Owner NAT UNIV OF DEFENSE TECH
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