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Silver ion adsorption material as well as preparation method and application thereof

An adsorption material and silver ion technology, applied in chemical instruments and methods, adsorption water/sewage treatment, other chemical processes, etc., can solve the problems of decreased adsorption capacity and cannot be used to adsorb silver ions in strongly acidic wastewater

Active Publication Date: 2018-11-16
NANCHANG HANGKONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the adsorption capacity of the above-mentioned adsorbent drops sharply when the pH value of the wastewater is less than 4, so it cannot be used to adsorb silver ions in strongly acidic wastewater.

Method used

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  • Silver ion adsorption material as well as preparation method and application thereof
  • Silver ion adsorption material as well as preparation method and application thereof
  • Silver ion adsorption material as well as preparation method and application thereof

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preparation example Construction

[0021] The invention provides a kind of preparation method of silver ion adsorption material, comprises the steps:

[0022] (1) Under the condition of nitrogen or inert gas protection, rhodanine derivative monomer, N,N'-methylenebisacrylamide, thermal initiator and polar organic solvent are mixed to obtain a raw material mixture; the rhodanine Ning derivative monomer is 3-allyl rhodanine or 3-butenyl rhodanine;

[0023] (2) Maintaining an atmosphere protected by nitrogen or an inert gas, performing thermal polymerization to obtain a silver ion adsorption material.

[0024] In the present invention, the rhodanine derivative monomer, N,N'-methylenebisacrylamide, thermal initiator and polar organic solvent are mixed under the protection condition of nitrogen or inert gas to obtain a raw material mixture.

[0025] In the present invention, there is no special limitation on the mixing order of the rhodanine derivative monomer, N,N'-methylenebisacrylamide, thermal initiator and pol...

Embodiment 1

[0056] (1) Add 50mL of methanol to a 100mL flask, vacuumize to -0.08MPa, then feed nitrogen, add 5mmol (that is, 0.8663g) of 3-allyl rhodanine under stirring, and after the dissolution is complete, a transparent and bright Yellow solution, namely 3-allyl rhodanine solution;

[0057] (2) Add 1mmol (ie 0.1542g) N,N'-methylenebisacrylamide to the 3-allyl rhodanine solution, stir to dissolve; then quickly add 2mmol (ie 0.3284g) AIBN, and vacuum to -0.07MPa, then feed nitrogen, stir evenly, and obtain a raw material mixture;

[0058] (3) Under the protection of nitrogen, the temperature was raised to 60°C at a heating rate of 3°C / min, and condensed and refluxed for 3 hours;

[0059] (4) Cool the reaction mixture to room temperature, and then separate it by suction filtration to obtain a solid product; wash the solid product three times with methanol, and the stirring time for each washing is 10 min; dry the washed solid product at 60°C Afterwards, the silver ion adsorption materi...

Embodiment 2

[0062] (1) Add 50mL of methanol to a 100mL flask, vacuumize to -0.09MPa, then feed nitrogen, add 5mmol (that is, 0.8663g) of 3-allyl rhodanine under stirring, and obtain a transparent bright Yellow solution, namely 3-allyl rhodanine solution;

[0063] (2) Add 3mmol (ie 0.4626g) N,N'-methylenebisacrylamide to the 3-allyl rhodanine solution, stir to dissolve; then quickly add 2mmol (ie 0.3284g) AIBN, and vacuum to -0.09MPa, then feed nitrogen, stir evenly, and obtain a raw material mixture;

[0064] (3) Under the protection of nitrogen, the temperature was raised to 60°C at a heating rate of 3°C / min, and condensed and refluxed for 3 hours;

[0065] (4) Cool the reaction mixture to room temperature, and then separate it by suction filtration to obtain a solid product; wash the solid product three times with methanol, and the stirring time for each washing is 15 min; dry the washed solid product at 60°C Afterwards, the silver ion adsorption material is obtained through grinding....

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Abstract

The invention provides a preparation method for a silver ion adsorption material. The preparation method comprises the following steps that firstly, under the protection of nitrogen or inert gas, a rhodamine derivative monomer, N,N'-methylene bisacrylamide, a thermal initiator and a polar organic solvent are mixed so as to obtain a raw material mixture, wherein the rhodamine derivative monomer is3-allylrhodamine or 3-butenylrhodamine; and then the nitrogen or inert gas protection atmosphere is maintained, and thermal polymerization reaction is carried out so as to obtain the silver ion adsorption material. The silver ion adsorption material obtained through the preparation method can be used for treating strong acidic wastewater with the pH value of 0.18, and in addition, when the initialconcentration of silver ions is 420 mg / L, the adsorption capacity of the silver ion adsorption material can reach 389.4 mg / g, namely, relatively high adsorbability is still achieved under strong acidconditions.

Description

technical field [0001] The invention relates to the technical field of heavy metal adsorption materials, in particular to a silver ion adsorption material and its preparation method and application. Background technique [0002] Silver is a silvery-white transition metal. It is very ductile and has the highest electrical and thermal conductivity of all metals. Silver is often used to make highly sensitive physical instrument components. Electronic appliances are the industry with the largest amount of silver, and its use is divided into electrical contact materials, composite materials and welding materials. Among silver compounds, silver halide photosensitive materials are one of the fields with the largest amount of silver. At present, the photosensitive materials with the largest production and sales volume are photographic film, photographic paper, X-ray film, fluorescent information recording sheet, and electron microscope photography. Film and printing film, etc. In...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/26B01J20/30C02F1/28C02F101/20
CPCB01J20/261B01J20/264C02F1/285C02F2101/20
Inventor 罗旭彪殷晓翠
Owner NANCHANG HANGKONG UNIVERSITY
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