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A kind of iron-based complex and its application

A complex, iron-based technology, applied in the preparation of cyanide reaction, the preparation of organic compounds, water pollutants, etc., can solve the problems of slow speed, low detection sensitivity, unsatisfactory removal effect, etc., to achieve low detection limit, detection The effect of high sensitivity and fast detection speed

Active Publication Date: 2020-08-28
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In the prior art, continuous fluorescence method, colorimetry, and electrochemical techniques are usually used to detect arsenate ions in water, and adsorption, flocculation, and chemical oxidation are used to remove arsenate ions in water, but These methods only have a single function of detection or removal, and the methods used to detect arsenate ions are slow and have low detection sensitivity, and the methods used to remove arsenic are not ideal for the removal of arsenate ions

Method used

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  • A kind of iron-based complex and its application
  • A kind of iron-based complex and its application
  • A kind of iron-based complex and its application

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Embodiment approach

[0026] (1) 2-aminoterephthalic acid, FeCl 3 ·6H 2 The ratio of O and nitrogen-nitrogen dimethylformamide is preferably 1.3838mmol: 1.3838mmol: 30mL. This ratio can not only make the detection sensitivity of the prepared iron-based complex to the concentration of arsenate ion in the water body Higher, and can effectively improve the removal effect of arsenate ions in water.

[0027] (2) 2-aminoterephthalic acid and FeCl 3 ·6H 2 After O is placed in nitrogen-nitrogen dimethylformamide, it is best to sonicate for 5 minutes and stir for 2 hours, so that 2-aminoterephthalic acid and FeCl 3 ·6H 2 O is fully and uniformly decomposed in nitrogen-nitrogen dimethylformamide.

[0028] (3) The iron-based complexes prepared by the hydrothermal reaction include: when 2-aminoterephthalic acid and FeCl 3 ·6H 2 After O is dissolved in nitrogen-nitrogen dimethylformamide, it is placed in an environment of 120° for 20 to 24 hours of hydrothermal reaction. After cooling down to room temper...

Embodiment 1

[0035] A kind of iron-based complex, its preparation method comprises the following steps: the 2-aminoterephthalic acid of 1.3838mmol and the FeCl of 1.3838mmol 3 ·6H 2 O is placed in 30mL of nitrogen-nitrogen dimethylformamide, ultrasonicated for 5 minutes and stirred for 2 hours, then it is placed in a 50mL reaction kettle, and the reaction kettle is placed in a blast drying oven and heated at 120° Carry out the hydrothermal reaction for 20 hours. After the temperature in the blast drying oven drops to room temperature, take out the suspension in the reaction kettle for centrifugation, and then use nitrogen-nitrogen dimethylformamide and ethanol to separate the solids obtained from the solid-liquid separation. Washing is performed several times, and finally placed in a freeze-drying device for 48 hours of freeze-drying, so that the iron-based complex can be prepared.

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Abstract

The invention discloses an iron-based complex and an application thereof. The method for preparing the iron-based complex comprises the following steps: dissolving 2-aminoterephthalic acid and FeCl3.6H2O serving as raw materials in nitrogen-nitrogen dimethylformamide serving as a solvent in a ratio that 1.3838mmol of FeCl3.6H2O and 30mL of nitrogen-nitrogen dimethylformamide are used in every 1.3838mmol of 2-aminoterephthalic acid; and preparing the iron-based complex by adopting a hydrothermal reaction. The iron-based complex can be used for detecting the concentration of arsenate ions in a water body and removing arsenate ions in the water body. The method can be used for quickly detecting the concentration of arsenate ions in the water body with high detection sensitivity, and effectively removing the arsenate ions in the water body.

Description

technical field [0001] The invention relates to the technical field of detection and removal of arsenate ions in water bodies, in particular to an iron-based complex and its application. Background technique [0002] Arsenate ions are one of the most toxic and carcinogenic substances, widely present in the atmosphere, water, soil, organisms and other environments. Geological factors such as volcanic eruptions, blooming reactions, biological activities, and corrosion of rocky soils can all lead to arsenic pollution in water and soil, while the smelting of arsenic-containing minerals, the use of arsenic-containing pesticides and preservatives, and the burning of fossil fuels And other human activities will cause arsenic pollution to the environment. If humans are exposed to arsenic-contaminated water for a long time, it will have a serious impact on human health, and it is easy to induce skin lesions, congenital deformities, kidney disease, liver function damage, leukemia, at...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C227/18C07C229/76B01J20/22C02F1/28G01N21/64
CPCB01J20/223C02F1/285C02F2101/103C07C227/18C07C229/76G01N21/643
Inventor 张云霞谢东华周宏建汪国忠张海民
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI