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A kind of o-phenanthroline polymer and its preparation method and application

A technology of o-phenanthroline and polymers, applied in the field of o-phenanthroline polymers and its preparation, can solve the problems of few polymer exposure sites, low heavy metal ion adsorption capacity, complex synthesis steps, etc., and achieve easy operation , High adsorption capacity, large adsorption capacity effect

Active Publication Date: 2021-11-02
NANCHANG HANGKONG UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the existing polymerization method has complex synthesis steps, few polymer exposure sites, and low adsorption capacity for low-concentration heavy metal ions in water.

Method used

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  • A kind of o-phenanthroline polymer and its preparation method and application
  • A kind of o-phenanthroline polymer and its preparation method and application
  • A kind of o-phenanthroline polymer and its preparation method and application

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preparation example Construction

[0021] The invention provides a kind of preparation method of o-phenanthroline polymer, comprises the following steps:

[0022] The acetonitrile solution of 1,10-phenanthroline is mixed with an oxidizing agent to carry out oxidative polymerization to obtain o-phenanthroline polymer.

[0023] In the present invention, unless otherwise specified, the required preparation materials are commercially available products well known to those skilled in the art.

[0024] The invention mixes the acetonitrile solution of 1,10-phenanthroline and the oxidizing agent. In the present invention, the 1,10-phenanthroline is used as a monomer for preparing the o-phenanthroline polymer, and the structural formula of the 1,10-phenanthroline is:

[0025]

[0026] In the present invention, in the acetonitrile solution of 1,10-phenanthroline, the concentration of 1,10-phenanthroline is 0.15-0.30 mol / L, more preferably 0.25 mol / L. In the present invention, the preparation process of the acetonitr...

Embodiment 1

[0046] Take 1mol 1,10-phenanthroline monomer and place it in a round-bottomed flask, add 160mL acetonitrile and sonicate until it is completely dissolved, and obtain a solution with a concentration of 0.25mol / L; prepare a 0.25mol / L ammonium persulfate (APS) aqueous solution; Slowly add 40mL APS aqueous solution into the flask, vacuumize and ventilate nitrogen protection, turn on the stirring switch, set the stirring speed to 550r / min, turn on the heating switch, set the oil bath temperature to 70°C, carry out the oxidative polymerization reaction for 15 hours, and keep the device sealed; after the reaction , the resulting reaction system was cooled to room temperature, left to stand for 2h, and the supernatant was separated; the lower layer was added to deionized water (the volume ratio of the lower layer to deionized water was 1:10), and filtered after standing for 6h; Put the product into acetonitrile, repeat ultrasonic ultrafiltration 5 times; put the obtained filtrate into ...

Embodiment 2

[0050] Take 1mol 1,10-phenanthroline monomer and place it in a round-bottomed flask, add 160mL acetonitrile and sonicate until it is completely dissolved, and obtain a solution with a concentration of 0.25mol / L; prepare a 0.25mol / L ammonium persulfate (APS) aqueous solution; Slowly add 40mL APS aqueous solution into the flask, vacuumize and ventilate nitrogen protection, turn on the stirring switch, set the stirring speed to 550r / min, turn on the heating switch, set the oil bath temperature to 70°C, carry out the oxidative polymerization reaction for 15 hours, and keep the device sealed; after the reaction , the resulting reaction system was cooled to room temperature, filtered after standing for 2 hours, the resulting filtrate was placed in acetonitrile, and ultrasonic ultrafiltration was repeated 5 times; the resulting filtrate was eluted in ultrapure water, ultrasonic 3min, pumped Filter, repeat ultrapure water elution-ultrasound-suction filtration 5 times; put the obtained ...

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Abstract

The invention provides an o-phenanthroline polymer and its preparation method and application, which belong to the technical field of water treatment. The preparation method of the o-phenanthroline polymer provided by the invention comprises the following steps: mixing an acetonitrile solution of 1,10-phenanthroline and an oxidizing agent, performing oxidation polymerization, and obtaining the o-phenanthroline polymer. The present invention uses 1,10-phenanthroline as a monomer for the first time, and at the same time adopts the method of oxidative polymerization to prepare o-phenanthroline polymer. The method belongs to the free radical polymerization of the bulk, and has the advantages of simple process, easy operation and no impurities . The o-phenanthroline polymer prepared by the invention has many exposed sites, has the advantages of large adsorption capacity and high removal rate when used as an adsorbent for heavy metal ions, and has broad application prospects for removing heavy metal ions in water bodies.

Description

technical field [0001] The invention relates to the technical field of water treatment, in particular to an o-phenanthroline polymer and a preparation method and application thereof. Background technique [0002] At present, many industrial production processes will produce a large amount of industrial wastewater containing toxic heavy metals, such as electroplating, metallurgy, metal finishing, mining and other industrial production processes will produce heavy metal-containing wastewater. Over the years, people have continuously developed and improved methods and technologies for treating heavy metal ion wastewater. At present, the methods for removing harmful heavy metals in wastewater include sulfuration method, chemical precipitation method, membrane filtration method, flocculation method, solvent extraction method and adsorption method. Among them, the adsorption method has gradually attracted people's attention due to its unique advantages. The key material in the a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/26B01J20/30C02F1/28C02F101/20
CPCB01J20/262C02F1/285C02F2101/20
Inventor 罗旭彪于婉君石慧盛鑫杨利明邵鹏辉
Owner NANCHANG HANGKONG UNIVERSITY
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