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Preparation method of copper sulfide electrode material and application of copper sulfide electrode material in extraction of copper from sewage

An electrode material, copper sulfide technology, applied in chemical instruments and methods, electrodes, separation methods, etc., can solve the problems of limited ion exchange capacity, poor removal ability at low concentration, and difficult treatment of residual chemicals, etc., to achieve short and fast preparation cycle The effect of adsorption rate and low cost

Pending Publication Date: 2022-04-15
DONGGUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, the above methods for removing copper ions in water have limitations such as poor removal ability at low concentrations, easy secondary pollution, difficult disposal of residual chemicals, high energy consumption, limited ion exchange capacity, low adsorption efficiency, and easy fouling of the membrane. For this reason, we Proposed a preparation method of copper sulfide electrode material and its application in capacitive deionization

Method used

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  • Preparation method of copper sulfide electrode material and application of copper sulfide electrode material in extraction of copper from sewage
  • Preparation method of copper sulfide electrode material and application of copper sulfide electrode material in extraction of copper from sewage
  • Preparation method of copper sulfide electrode material and application of copper sulfide electrode material in extraction of copper from sewage

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Experimental program
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Effect test

Embodiment 1

[0037] 0.483g of copper nitrate trihydrate and 0.380g of thiourea were added to a mixed solution consisting of 10mL of ethylene glycol and 30mL of deionized water. After stirring to dissolve, add 0.05g of cetyltrimethylammonium bromide and continue stirring for 10min. Then the mixed solution was transferred into a reaction kettle, put into an oven, heated to 150° C., and reacted for 15 hours; after cooling to room temperature, the solid product was washed with absolute ethanol and deionized water. Finally put it into an oven and dry at 60° C. for 12 hours to obtain a copper sulfide electrode material.

Embodiment 1

[0038] The X-ray diffraction spectrogram of the copper sulfide electrode material prepared in embodiment 1 is as figure 1 As shown, among them, the more obvious diffraction peaks are located at 2θ=10.81, 27.12, 27.68, 29.28, 31.78, 32.85, 47.78, 47.94, 52.71 and 59.35° respectively. Compared with copper sulfide crystal standard card PDF#06-0464, the above peaks correspond to (002), (100), (101), (102), (103), (006), (107) of copper sulfide crystal respectively ), (110), (108) and (116) crystal planes. In addition, there are no other impurity peaks in the X-ray diffraction spectrum. The above results show that the copper sulfide electrode material was successfully prepared in the experiment, and its crystallinity and purity are high.

[0039] figure 2is the scanning electron microscope and elemental distribution map of the prepared copper sulfide material. It can be seen from the figure that the prepared copper sulfide is a microsphere with a size of 3-5 microns. In the e...

Embodiment 2

[0043] The obtained copper sulfide electrode material is used as an active material, mixed uniformly with conductive carbon black at a mass ratio of 8:1, added absolute ethanol, after stirring evenly, the binder added, the ratio of the active material to the binder is 8 :1, Stir well. Subsequently, the resulting mixture was coated on graphite paper with a film thickness of 100-600 μm. The coated graphite paper was dried at 50° C. for 10 h to obtain a cathode electrode for capacitive deionization whose active material was copper sulfide. also, image 3 is a schematic diagram of a capacitive deionization device. Figure 4 It is a schematic diagram of the assembly method of the asymmetric capacitive deionization module, where a is the current collector, b is the titanium strip, c is the copper sulfide cathode electrode, d is the non-woven fabric, e is the silica gel gasket, and c’ is the activated carbon anode electrode.

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Abstract

The invention discloses a preparation method of a copper sulfide electrode material, which comprises the following specific steps: (1) stirring and dissolving copper nitrate trihydrate and thiourea in a solvent to obtain a mixture A; (2) adding hexadecyl trimethyl ammonium bromide into the mixture A, and uniformly stirring to obtain a mixture B; (3) putting the mixture B into a drying oven, heating to 100-180 DEG C, and reacting for 10-18 hours to obtain a copper sulfide crude product; the copper sulphide electrode material is wide in application range, copper is extracted while the copper sulphide electrode material is used for treating copper-containing wastewater, copper sulphide serves as a Faraday material, and compared with a carbon material, the copper sulphide electrode material has the advantages of being high in adsorption capacity, high in adsorption rate, high in selectivity and the like in the copper-containing wastewater treatment process. Interference of various salt ions and other types of heavy metals in the water body can be overcome, and copper ions can be selectively extracted from the water body.

Description

technical field [0001] The invention belongs to the technical field of capacitive deionization, and in particular relates to a preparation method of a copper sulfide electrode material and its application in copper extraction from sewage. Background technique [0002] Copper is a non-ferrous metal material that is closely related to human beings in the development of modern industry and society. It is widely used in the fields of electrical, machinery manufacturing, construction and defense industries, but at the same time, copper has certain biological toxicity in certain forms and concentrations. . With the continuous advancement of industrialization, a large amount of wastewater containing copper, gold and other heavy metal ions with economic value is discharged into the environment. Among them, industrial electroplating washing wastewater is the main part of wastewater discharge and the main source of pollution. At the same time, according to the national surface water ...

Claims

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Application Information

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IPC IPC(8): C02F1/469C25C7/02C25C1/12C02F101/20
CPCY02P10/20C02F1/46109C02F2001/46138C02F1/4691C02F2101/20C01G3/12C02F1/46114
Inventor 王刚庄浩洪汪仕勇吕斯濠
Owner DONGGUAN UNIV OF TECH
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