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Two-dimensional zinc coordination polymer and preparation method thereof

A zinc coordination polymer, two-dimensional layered technology, applied in the field of coordination polymer preparation, can solve the problems of inconvenient detection and expensive detection instruments, and achieve the effect of good fluorescence recognition and sensing effect

Active Publication Date: 2018-04-06
安徽锦圣新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These detection methods have high sensitivity, but there are also some shortcomings, mainly because some detection instruments are too expensive and the detection is not convenient

Method used

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  • Two-dimensional zinc coordination polymer and preparation method thereof
  • Two-dimensional zinc coordination polymer and preparation method thereof
  • Two-dimensional zinc coordination polymer and preparation method thereof

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preparation example Construction

[0034] combine figure 1 , a method for preparing a two-dimensional zinc coordination polymer, comprising the following steps:

[0035] S1, choose soluble zinc salt, 3-nitrophthalic acid, 1,2,4-triazole, the soluble zinc salt, 3-nitrophthalic acid, 1,2,4-triazole Select according to the molar ratio of 1:1:1~2;

[0036] S2. Dissolve the selected soluble zinc salt, 3-nitrophthalic acid, and 1,2,4-triazole in 500-1000 parts of deionized water, stir at room temperature for 1 hour, and then add 10-15 Part of organic base, stirred at room temperature for 1 hour;

[0037] S3, after stirring the solution in step S2 evenly, add it into a stainless steel reaction kettle with polytetrafluoroethylene as the inner liner;

[0038]S4. Put the reaction kettle into a blast drying oven and heat up to 160-170°C, react for 72-96 hours, turn off the oven and cool to room temperature naturally to obtain light yellow needle-shaped crystals, filter, wash with deionized water several times, and brin...

Embodiment 1

[0040] A method for preparing a two-dimensional zinc coordination polymer, comprising the following steps:

[0041] S1, select zinc nitrate hexahydrate (0.1mmol), 3-nitrophthalic acid (0.1mmol) 1,2,4-triazole (0.2mmol), zinc nitrate hexahydrate, 3-nitrophthalic acid Formic acid and 1,2,4-triazole are selected according to the molar ratio of 1:1:2;

[0042] S2. Dissolve zinc nitrate hexahydrate, 3-nitrophthalic acid, and 1,2,4-triazole in 500 to 1,000 parts of deionized water, stir for 1 hour at room temperature, and then add triethyl Amine (1.0mmol), stirred at room temperature for 1 hour;

[0043] S3. After the solution in step S2 was stirred evenly, it was added to a 30 mL stainless steel reactor with polytetrafluoroethylene as a lining, and 10 mL of deionized water was added;

[0044] S4. Put the reaction kettle into a blast drying oven and heat up to 160°C, react for 72 hours, turn off the oven and cool to room temperature naturally to obtain light yellow needle-shaped c...

Embodiment 2

[0046] A method for preparing a two-dimensional zinc coordination polymer, comprising the following steps:

[0047] S1, choose zinc sulfate heptahydrate (0.1mmol), 3-nitrophthalic acid (0.1mmol) 1,2,4-triazole (0.2mmol), zinc sulfate heptahydrate, 3-nitrophthalate Formic acid and 1,2,4-triazole are selected according to the molar ratio of 1:1:1;

[0048] S2. Dissolve zinc sulfate heptahydrate, 3-nitrophthalic acid, and 1,2,4-triazole in 500 to 1,000 parts of deionized water, stir for 1 hour at room temperature, and then add triethyl Amine (1.5mmol), stirred at room temperature for 1 hour;

[0049] S3. After the solution in step S2 was stirred evenly, it was added to a 30 mL stainless steel reactor with polytetrafluoroethylene as a lining, and 10 mL of deionized water was added;

[0050] S4. Put the reaction kettle into a blast drying oven and heat up to 170°C, react for 96 hours, turn off the oven and cool to room temperature naturally to obtain light yellow needle-shaped cr...

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Abstract

The invention provides a two-dimensional zinc coordination polymer. The two-dimensional zinc coordination polymer has a two-dimensional layered structure, and is composited from soluble zinc salt, 1,2, 4-triazole and 3-nitrophthalic acid ligand by a hydrothermal reaction, and the chemical formula of the zinc coordination polymer is [Zn(3-NBA)(trz)]n, wherein 3-NBA is an anion of 3-nitrobenzoic acid, trz is an anion of 1,2,4-triazole, and n is the degree of polymerization. The coordination polymer is prepared by steps as follows: soluble zinc salt is added to organic ligand 3-nitrophthalic acid, 3-nitrophthalic acid is subjected to high-temperature hydrothermal reaction, and in-situ decomposition reaction is performed by breaking of C-C bonds; the zinc coordination polymer is of the two-dimensional layered structure and has good fluorescence recognition and sensing effects on nitrobenzene, thereby having important potential application prospect in environmental detection.

Description

technical field [0001] The invention relates to the technical field of preparation of coordination polymers, in particular to a two-dimensional zinc coordination polymer capable of detecting nitrobenzene and a preparation method thereof. Background technique [0002] Nitrobenzene (NB) is an important organic intermediate, which is widely used in the production of dyes, pesticides, medicines, and fluorescent whitening agents. A large amount of pollutants may be produced during production, which may cause serious harm to the environment and organisms function and is potentially explosive. In recent years, the rapid and effective detection of nitro compounds has become one of the research hotspots in the field of materials. The current methods for detecting various nitro compounds mainly include gas chromatography-mass spectrometry, surface-enhanced Raman spectroscopy, cyclic voltammetry, and ion mobility spectrometry. These detection methods have high sensitivity, but there ...

Claims

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Application Information

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IPC IPC(8): C08G83/00C09K11/06G01N21/64
CPCC08G83/008C09K11/06G01N21/643G01N2021/6432
Inventor 汪鹏飞吴小说刘传洋
Owner 安徽锦圣新材料有限公司
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