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Preparation of luminescent crystal material for selectively detecting dichromate ions

A technology of dichromate and luminescent crystals, which is applied in the direction of luminescent materials, material analysis and material analysis through optical means, can solve the problems of complex operation, high cost, application limitations, etc., and achieve good optical stability, easy control, The effect of mild process conditions

Inactive Publication Date: 2017-08-04
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Due to the development of instrument technology, many new instrument methods such as mass spectrometry, surface-enhanced Raman spectroscopy, neutron activation analysis, ion mobility spectrometry, energy dispersive X-ray diffraction and plasma mass spectrometry have been used to detect pollutants. Problems such as high cost and complicated operation limit its application

Method used

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  • Preparation of luminescent crystal material for selectively detecting dichromate ions
  • Preparation of luminescent crystal material for selectively detecting dichromate ions
  • Preparation of luminescent crystal material for selectively detecting dichromate ions

Examples

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Effect test

Embodiment 1

[0025] Embodiment 1: The preparation of a luminescent crystal material with selective detection of dichromate ions in the present invention comprises the following steps:

[0026] In the first step, 0.05 mmol of 4-amino-3,5-bis(imidazolylmethyl)-1,2,4-triazole (3-abit) and 0.1 mmol of zinc acetate were added to 10 mL of aqueous solution and stirred A stable suspension is obtained;

[0027] In the second step, 0.1 mmol of 2,5-thiophene dicarboxylic acid (2,5-tdc) was added to the suspension prepared in the first step and stirred to obtain a stable suspension;

[0028] In the third step, the suspension prepared in the second step is placed in a closed polytetrafluoroethylene reactor and heated to 170°C for 72 hours, slowly cooled at a rate of 3°C / h, filtered, washed, and dried to obtain Crystal material {[Zn(2,5-tdc)(3-abit)] H 2 O} n ;

[0029] Dichromate ion selective detection performance test: the prepared crystal material (1 mg) was added to an anion aqueous solution wi...

Embodiment 2

[0030] Embodiment 2: The preparation of a luminescent crystal material with selective detection of dichromate ions in the present invention comprises the following steps:

[0031] In the first step, 0.05 mmol of 4-amino-3,5-bis(imidazolylmethyl)-1,2,4-triazole (3-abit) and 0.1 mmol of zinc acetate were added to 8 mL of aqueous solution and stirred A stable suspension is obtained;

[0032] In the second step, 0.05 mmol of 2,5-thiophene dicarboxylic acid (2,5-tdc) is added to the suspension prepared in the first step and stirred to obtain a stable suspension;

[0033] In the third step, the suspension prepared in the second step is placed in a closed polytetrafluoroethylene reactor and heated to 170°C for 72 hours, slowly cooled at a rate of 3°C / h, filtered, washed, and dried to obtain Crystal material {[Zn(2,5-tdc)(3-abit)] H 2 O} n ;

[0034] Dichromate ion selective detection performance test: the prepared crystal material (1 mg) was added to an anion aqueous solution wit...

Embodiment 3

[0035] Embodiment 3: The preparation of a luminescent crystal material with selective detection of dichromate ions in the present invention comprises the following steps:

[0036] In the first step, 0.05 mmol of 4-amino-3,5-bis(imidazolylmethyl)-1,2,4-triazole (3-abit) and 0.1 mmol of zinc acetate were added to 10 mL of aqueous solution and stirred A stable suspension is obtained;

[0037] In the second step, 0.1 mmol of 2,5-thiophene dicarboxylic acid (2,5-tdc) was added to the suspension prepared in the first step and stirred to obtain a stable suspension;

[0038] In the third step, the suspension prepared in the second step is placed in a closed polytetrafluoroethylene reactor and heated to 160°C for 75 hours, slowly cooled at a rate of 3°C / h, filtered, washed, and dried to obtain Crystal material {[Zn(2,5-tdc)(3-abit)] H 2 O} n ;

[0039] Dichromate ion selective detection performance test: the prepared crystal material (1 mg) was added to an anion aqueous solution wi...

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Abstract

The invention discloses preparation of a luminescent crystal material for selectively detecting dichromate ions. The method comprises the steps of adding 4-amino-3,5-bis(imidazole methyl)-1,2,4-triazole(3-abit) and zinc acetate to an aqueous solution and stirring to obtain a stable suspension; adding 2,5-thiophenedicarboxylic acid (2,5-tdc) to the suspension and stirring to prepare a stable suspension; putting the suspension into a closed polytetrafluoroethylene reaction kettle for heating reaction, slowly cooling and then filtering, washing and drying to obtain the luminescent crystal material {[Zn(2,5-tdc)(3-abit)].H2O}n. The method has the advantage that the luminescent crystal material {[Zn(2,5-tdc)(3-abit)].H2O}n for efficiently and selectively detecting the dichromate ions is obtained.

Description

[0001] a technical field [0002] The invention relates to the preparation of toxic anion detection materials, in particular to a selective detection of dichromate ions (Cr 2 o 7 2- ) of luminescent crystal material {[Zn(2,5-tdc)(3-abit)]·H 2 O} n Preparation of [2,5-tdc=2,5-thiophenedicarboxylic acid; 3-abit=4-amino-3,5-bis(imidazolylmethyl)-1,2,4-triazole]. [0003] Two background technology [0004] With the rapid development of modern society and industrialization, great changes have taken place in people's lives, but at the same time, a large amount of pollutants are produced and discharged into environmental water bodies, which has caused great harm to human health and the environment. Among many pollutants, dichromate ion is a more harmful pollutant. Although dichromate ion is an important oxidant in industry, it poses a carcinogenic threat to human health, so the detection of dichromate ion is of great significance to human health and the environment. Due to the d...

Claims

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Application Information

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IPC IPC(8): C07F3/06C09K11/06G01N21/64
CPCC07F3/06C09K11/06C09K2211/188G01N21/643G01N2021/6432
Inventor 张金方龚林培吴俊洁冯姣阳
Owner JIANGNAN UNIV
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