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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Problems solved by technology

However, the disclosed technology for preparing zirconium-based MOF nanotubes has not been reported yet.

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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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preparation example Construction

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

[0026] Dissolve the zirconium metal salt in the solvent DMF, and add 1,3,6,8-tetrakis(4-carboxyphenyl)pyrene and regulator, then carry out ultrasonic or stirring dispersion, and then carry out solvothermal heat to the mixture obtained after dispersion treatment After the reaction, cool to room temperature after the reaction is completed, wash and dry to a completely dry state to obtain Zr-MOF nanotubes. The method of the present invention avoids the traditional preparation of MOF nanotubes with complex structures using an external template agent, 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 zirconium metal salt to 1,3,6,8-tetrakis(4-carboxyphenyl)pyrene...

Embodiment 1

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

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

Embodiment 2

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

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

[0043] To the characterization data of the gained nanotube of embodiment 2 such as Figure 1-3 shown. figure 1 and figure 2 It is the microscopic morphology of the product under 10,000 and 20,000 times magnification respectively. It can be see...

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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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