Multi-electrochemical-functional-group electrode material for selectively extracting ions and application of multi-electrochemical-functional-group electrode material

Abstract

The invention discloses a multi-electrochemical functional group electrode material, which is an organic small molecular material, contains C = O, C = N or N = N functional groups, and has aromaticity. The preparation method of the multi-electrochemical-functional-group electrode material comprises the following steps: weighing corresponding raw material monomer micromolecular materials according to a stoichiometric ratio of halogen bonds, amino groups or acid anhydride and sulfides contained in the multi-electrochemical-functional-group electrode material, and reacting in an organic solvent, an aqueous solution or a mixed solution of the organic solvent and the aqueous solution in a protective atmosphere to obtain the multi-electrochemical-functional-group electrode material. Reacting for 5 to 12 hours at the temperature of 80 to 200 DEG C; according to the multi-electrochemical functional group electrode material disclosed by the invention, electrochemical direct extraction of liquid ore resources is realized on the basis of a green electrochemical method. Besides, the method for preparing the multi-electrochemical functional group electrode material has the advantages of low cost, simple process and high element separation and extraction efficiency, is environment-friendly, and can realize efficient development and comprehensive utilization of salt lake resources, marine resources, industrial sewage and wastewater recycling, seawater desalination and the like.

Description

Technical Field

[0001] The invention relates to the field of organic small molecule electrode materials for ion extraction, and in particular to a multi-electrochemical functional group electrode material for selectively extracting ions and an application thereof. Background Art

[0002] Selective extraction of liquid mineral resources refers to the selective extraction of elements or compounds that are vital to the development of human society from liquid mineral raw materials through specific physical, chemical or biotechnological means. Liquid mineral resources, represented by marine resources and salt lake resources, have the advantages of rich resources and a wide variety of elements.

[0003] Ion selective extraction refers to the process of selectively extracting or removing specific ions from a solution using specific materials or technologies, such as ion exchange resins, membrane separation technology, etc. However, there are also some problems and challenges in ion selective extraction. In actual solutions, there are often multiple ions. How to design highly selective extraction materials or technologies is one of the main problems facing ion selective extraction. Insufficient selectivity will lead to the mixing of target ions with other ions, affecting the extraction efficiency and purity. Operation cost issues: Ion selective extraction usually requires the use of specific equipment and materials, and the cost of these equipment and materials may be relatively high, which limits the widespread application of ion selective extraction technology. Environmental impact issues: Some by-products or wastes may be generated during the ion selective extraction process. If these by-products or wastes are not properly handled, they may cause pollution to the environment. Material stability issues: Side reactions of materials may cause material damage or degradation of solution components, affecting the extraction effect. Operation stability issues: The stability of the ion selective extraction process may be affected by many factors, such as temperature, pH value, solution composition, etc., which may lead to unstable extraction effects.

[0004] In order to solve the above problems, the development of high-performance electrode materials and the selective extraction of liquid mineral resources based on electrochemical ion extraction technology of green electronics are expected to promote the development and utilization of liquid mineral resources. Therefore, the development of high-performance element selective extraction materials based on abundant organic elements can provide a new electrode material research and development solution for the selective extraction of liquid mineral resources. Summary of the invention

[0005] The present invention aims to provide an organic small molecule electrode material, which can realize high-performance selective extraction of liquid mineral resources. The preparation method of the organic small molecule material of the present invention is simple, the raw materials are readily available, the price is low, it is easy to realize, and it is convenient for large-scale industrial production and application.

[0006] According to one aspect of the present invention, a multi-electrochemical functional group electrode material for selectively extracting ions is provided, wherein the multi-electrochemical functional group electrode material is an organic small molecule material, the multi-electrochemical functional group electrode material contains C=O, C=N or N=N functional groups, and the multi-electrochemical functional group electrode material has aromaticity;

[0007] Among them, the preparation method of the multi-electrochemical functional group electrode material includes: weighing the corresponding raw material monomer small molecule materials according to the halogen bonds, amino groups or acid anhydrides and sulfides contained in the multi-electrochemical functional group electrode material by stoichiometric ratio, reacting in an organic solvent, an aqueous solution or a mixed solution of the two, and under a protective atmosphere, at a temperature of 80-200 degrees Celsius for 5-12 hours to obtain the multi-electrochemical functional group electrode material.

[0008] In an example of the multi-electrochemical functional group electrode material provided in the above aspect, the number of C=O, C=N or N=N functional groups contained in the multi-electrochemical functional group electrode material is greater than 4.

[0009] In an example of the multi-electrochemical functional group electrode material provided in the above aspect, the raw material monomer small molecule material is a quinone material containing two or more halogens or amino groups, tetracarboxylic anhydride, or dicarboxylic anhydride containing two or more halogens.

[0010] In an example of the multi-electrochemical functional group electrode material provided in the above aspect, the sulfide material is sodium sulfide, lithium sulfide or sodium sulfide nonahydrate.

[0011] In an example of the multi-electrochemical functional group electrode material provided in the above aspect, the organic solvent is deionized water, N-methylpyrrolidone, N,N-dimethylformamide or acetic acid.

[0012] In an example of the multi-electrochemical functional group electrode material provided in the above aspect, the multi-electrochemical functional group electrode material has a lithium extraction capacity of greater than 60 mg / g in salt lake brine and a lithium / sodium selective distribution coefficient of greater than 80.

[0013] In an example of the multi-electrochemical functional group electrode material provided in the above aspect, the capacity of the multi-electrochemical functional group electrode material for extracting chromium from chromium-containing wastewater is greater than 450 mg / g.

[0014] In one example of the multi-electrochemical functional group electrode material provided in the above aspect, the capacity of the multi-electrochemical functional group electrode material to extract lead from lead-containing wastewater is greater than 1800 mg / g.

[0015] In one example of the multi-electrochemical functional group electrode material provided in the above aspect, the capacity of the multi-electrochemical functional group electrode material to extract gold from gold-containing wastewater is greater than 1200 mg / g.

[0016] According to another aspect of the present invention, there is provided a use of the above-mentioned multi-electrochemical functional group electrode material in solution-phase ion selective extraction.

[0017] Beneficial effects: The multi-electrochemical functional group electrode material according to the embodiment of the present invention realizes the electrochemical direct extraction of liquid mineral resources based on the green electrochemical method. In addition, the method for preparing the multi-electrochemical functional group electrode material according to the embodiment of the present invention has the advantages of low cost, simple process, high efficiency of element separation and extraction, and is environmentally friendly, and can realize the efficient development and comprehensive utilization of salt lake resources, marine resources, industrial wastewater resources, seawater desalination, etc., and has good industrialization prospects. DETAILED DESCRIPTION

[0018] Below, will refer to and describe in detail the specific embodiment of the present invention.However, can implement the present invention in many different forms, and the present invention should not be interpreted as being limited to the specific embodiment set forth herein.On the contrary, provide these embodiments to explain the principle of the present invention and its practical application, so that other technical personnel in the field can understand the various embodiments of the present invention and be suitable for the various modifications of specific intended application.

[0019] As used herein, the term "including" and its variations represent open terms, meaning "including but not limited to". The terms "based on", "according to", etc. mean "based at least in part on", "based at least in part on". The terms "one embodiment" and "an embodiment" mean "at least one embodiment". The term "another embodiment" means "at least one other embodiment". Other definitions may be included below, whether explicit or implicit. Unless the context clearly indicates otherwise, the definition of a term is consistent throughout the specification.

[0020] According to an embodiment of the present invention, a multi-electrochemical functional group electrode material for selectively extracting ions is provided, wherein the multi-electrochemical functional group electrode material is an organic small molecule material, the multi-electrochemical functional group electrode material contains C=O, C=N or N=N functional groups, and the multi-electrochemical functional group electrode material has aromaticity;

[0021] Among them, the preparation method of the multi-electrochemical functional group electrode material includes: weighing the corresponding raw material monomer small molecule materials according to the halogen bonds, amino groups or acid anhydrides and sulfides contained in the multi-electrochemical functional group electrode material by stoichiometric ratio, reacting in an organic solvent, an aqueous solution or a mixed solution of the two, and under a protective atmosphere, at a temperature of 80-200 degrees Celsius for 5-12 hours to obtain the multi-electrochemical functional group electrode material.

[0022] In one example, the multi-electrochemical functional group electrode material contains more than four C═O, C═N or N═N functional groups.

[0023] In one example, the raw material monomer small molecule material is a quinone material containing two or more halogens or amino groups, tetracarboxylic anhydride, or dicarboxylic anhydride containing two or more halogens.

[0024] In one example, the sulfide material is sodium sulfide, lithium sulfide or sodium sulfide nonahydrate.

[0025] In one example, the organic solvent is deionized water, N-methylpyrrolidone, N,N-dimethylformamide or acetic acid.

[0026] In one example, the multi-electrochemical functional group electrode material has a lithium extraction capacity of greater than 60 mg / g in salt lake brine and a lithium / sodium selective distribution coefficient of greater than 80.

[0027] In one example, the multi-electrochemical functional group electrode material has a capacity of extracting chromium from chromium-containing wastewater greater than 450 mg / g.

[0028] In one example, the multi-electrochemical functional group electrode material has a capacity of extracting lead from lead-containing wastewater greater than 1800 mg / g.

[0029] In one example, the capacity of the multi-electrochemical functional group electrode material to extract gold from gold-containing wastewater is greater than 1200 mg / g.

[0030] The method for preparing the multi-electrochemical functional group electrode material according to an embodiment of the present invention will be described in detail below.

[0031] <Preparation Implementation Method 1>

[0032] The preparation method of the preparation implementation mode 1 is specifically as follows: first, dichloronaphthoquinone and sodium sulfide are weighed in a molar ratio of 1:1 and added to a 100 mL glass container; secondly, 30 mL of deionized water is added, and the mixture is reacted at 100 degrees Celsius for 6 hours, and cooled to room temperature to obtain a reaction product; finally, the reaction product is filtered, and the filtrate obtained by filtration is washed with deionized water and ethanol until it is colorless, and then dried to obtain a multi-electrochemical functional group electrode material.

[0033] The multi-electrochemical functional group electrode material has four C=O functional groups, and its lithium extraction capacity in salt lake brine is higher than 70 mg / g, and its lithium / sodium selective distribution coefficient is higher than 80; its chromium extraction capacity in chromium-containing industrial wastewater is higher than 470 mg / g; its lead extraction capacity in lead-containing wastewater is higher than 1850 mg / g; and its gold extraction capacity in gold-containing wastewater is higher than 1200 mg / g.

[0034] <Preparation Implementation Method 2>

[0035] The preparation method of the preparation implementation mode 1 is specifically as follows: first, naphthalene tetracarboxylic anhydride and aminobenzoquinone are weighed in a molar ratio of 1:1 and added to a 100 mL glass container; secondly, 50 mL of N-methylpyrrolidone is added, reacted at a temperature of 180 degrees Celsius for 12 hours, and cooled to room temperature to obtain a reaction product; finally, the reaction product is filtered, and the filtrate obtained by filtration is washed with deionized water and ethanol until it is colorless, and then dried to obtain a multi-electrochemical functional group electrode material.

[0036] The multi-electrochemical functional group electrode material has 8 C=O functional groups, and its lithium extraction capacity in salt lake brine is higher than 90 mg / g, and its lithium / sodium selective distribution coefficient is higher than 82; its chromium extraction capacity in chromium-containing industrial wastewater is higher than 600 mg / g; its lead extraction capacity in lead-containing wastewater is higher than 1920 mg / g; and its gold extraction capacity in gold-containing wastewater is higher than 1300 mg / g.

[0037] In summary, the multi-electrochemical functional group electrode material according to the embodiment of the present invention realizes the electrochemical direct extraction of liquid mineral resources based on the green electrochemical method. In addition, the method for preparing the multi-electrochemical functional group electrode material according to the embodiment of the present invention has the advantages of low cost, simple process, high efficiency of element separation and extraction, and is environmentally friendly, and can realize the efficient development and comprehensive utilization of salt lake resources, marine resources, industrial wastewater resources, seawater desalination, etc., and has good industrialization prospects.

[0038] The terms "exemplary," "example," and the like are used throughout this specification to mean "serving as an example, instance, or illustration" and do not imply "preferred" or "advantageous" over other embodiments. The detailed description includes specific details for the purpose of providing an understanding of the described techniques. However, these techniques may be practiced without these specific details.

[0039] The above describes in detail the optional implementation modes of the embodiments of the present invention. However, the embodiments of the present invention are not limited to the specific details in the above implementation modes. Within the technical concept of the embodiments of the present invention, various simple modifications can be made to the technical solutions of the embodiments of the present invention. These simple modifications all belong to the protection scope of the embodiments of the present invention.

Claims

1. A multi-electrochemical functional group electrode material for selectively extracting ions, characterized in that: The multi-electrochemical functional group electrode material is an organic small molecule material, the multi-electrochemical functional group electrode material contains C=O, C=N or N=N functional groups, and the multi-electrochemical functional group electrode material has aromaticity; Among them, the preparation method of the multi-electrochemical functional group electrode material includes: weighing the corresponding raw material monomer small molecule materials according to the halogen bonds, amino groups or acid anhydrides and sulfides contained in the multi-electrochemical functional group electrode material by stoichiometric ratio, reacting in an organic solvent, an aqueous solution or a mixed solution of the two, and under a protective atmosphere, at a temperature of 80-200 degrees Celsius for 5-12 hours to obtain the multi-electrochemical functional group electrode material.

2. The multi-electrochemical functional group electrode material according to claim 1, characterized in that: The number of C=O, C=N or N=N functional groups contained in the multi-electrochemical functional group electrode material is greater than 4.

3. The multi-electrochemical functional group electrode material according to claim 1, characterized in that: The raw material monomer small molecule material is a quinone material containing two or more halogens or amino groups, tetracarboxylic anhydride, and dicarboxylic anhydride containing two or more halogens.

4. The multi-electrochemical functional group electrode material according to claim 1, characterized in that: The sulfide material is sodium sulfide, lithium sulfide or sodium sulfide nonahydrate.

5. The multi-electrochemical functional group electrode material according to claim 1, characterized in that: The organic solvent is deionized water, N-methylpyrrolidone, N,N-dimethylformamide or acetic acid.

6. The multi-electrochemical functional group electrode material according to any one of claims 1 to 5, characterized in that: The multi-electrochemical functional group electrode material has a lithium extraction capacity of greater than 60 mg / g in salt lake brine and a lithium / sodium selective distribution coefficient of greater than 80.

7. The multi-electrochemical functional group electrode material according to any one of claims 1 to 5, characterized in that: The multi-electrochemical functional group electrode material has a capacity of extracting chromium from chromium-containing wastewater greater than 450 mg / g.

8. The multi-electrochemical functional group electrode material according to any one of claims 1 to 5, characterized in that: The multi-electrochemical functional group electrode material has a capacity of extracting lead from lead-containing wastewater greater than 1800 mg / g.

9. The multi-electrochemical functional group electrode material according to any one of claims 1 to 5, characterized in that: The multi-electrochemical functional group electrode material has a capacity of extracting gold from gold-containing wastewater greater than 1200 mg / g.

10. Use of the multi-electrochemical functional group electrode material according to any one of claims 1 to 9 in solution-phase ion selective extraction.