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Hydroxyl-modified tremella-shaped three-dimensional carbon nanosheet as well as preparation method and application thereof in gallium recovery

A technology of carbon nanosheets and white fungus, applied in the field of tremella-shaped three-dimensional carbon nanosheets, can solve the problems of long equilibration time, expensive reagents, low extraction rate, etc., achieve good recycling ability, fast and simple method, and mild reaction conditions.

Pending Publication Date: 2021-04-23
LIAONING UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Carboxylic acid extractants have a good separation effect on gallium and a high extraction rate, but they are time-consuming and the research system is relatively simple
Phosphine extractants have better selective adsorption to gallium, but the whole extraction process needs to be carried out in high concentration hydrochloric acid solution, which will not only cause damage to equipment, increase cost, but also pollute the environment
Quinoline adsorbents are used in the alumina industry, but they are not widely used due to their long equilibration time and low extraction rate
The reaction system used by the amine extractant is a low-concentration acidic solution and is environmentally friendly, but it is difficult to separate gallium from iron
[0003] The above methods of recovering gallium are not only not very effective in terms of recycling, but also easily cause environmental pollution, and the reagents used are relatively expensive

Method used

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  • Hydroxyl-modified tremella-shaped three-dimensional carbon nanosheet as well as preparation method and application thereof in gallium recovery
  • Hydroxyl-modified tremella-shaped three-dimensional carbon nanosheet as well as preparation method and application thereof in gallium recovery
  • Hydroxyl-modified tremella-shaped three-dimensional carbon nanosheet as well as preparation method and application thereof in gallium recovery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031]Example 1 Prepared hydroxy modified silver-shaped three-dimensional carbon nanoflake (3DCN800-BT10-S0.5)

[0032](1) preparation

[0033]1) Put 5 g of sodium citrate into the porcelain, 2 hours in a nitrogen atmosphere of 800 ° C, and the temperature rate is controlled to 5 ° C min.-1After washing with diluted hydrochloric acid and distilled water until neutral, then dried in an oven at 50 ° C, the obtained carbon sample was named 3 dCN800.

[0034]2) Take 1g Step 1) The resulting 3dCN800, 10 ml of butyl butyl ester and 0.5 g of sorbitan in the three flasks, after supersonic at room temperature for 1.5 hours, the resulting solution is dripped into distilled water, and set up 24 hours. After the filtering operation, finally dried overnight, grinding the product, named 3DCN800-BT10-S0.5.

[0035](2) Test

[0036]Scanning electron microscopy, transmission electron microscope and functional group titration analysis: 3DCN800 and 3DCN800-BT10-S0.5 scanning electron microscopy and transmission elec...

Embodiment 2

[0041]Example 2 Prepared hydroxyl modified silver-shaped three-dimensional carbon nanoflake (3DCN800-BT10-S0.1)

[0042]According to the method of Example 1, 0.5 g of sorbitol in Example 1 was replaced with 0.1 g of sorbitol, and the resulting hydroxyl-modified silver ear-shaped three-dimensional carbon nanofeng, the sample was named 3DCN800-BT10-S0.1.

Embodiment 3

[0043]Example 3 Prepared hydroxyl modified silver ear-shaped three-dimensional carbon nankell (3DCN800-BT10-S0.3)

[0044]According to the method of Example 1, 0.3 g of sorbitol replaced 0.5 g of sorbitol in Example 1, the resulting hydroxyl modified silver ear-shaped three-dimensional carbon nanofeng, the sample was named 3DCN800-BT10-S0.3.

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Abstract

The invention belongs to the technical field of preparation of effective recovery materials of gallium, and particularly relates to a hydroxyl-modified tremella-shaped three-dimensional carbon nanosheet material as well as a preparation method and application thereof in gallium recovery. According to the technical scheme, a tremella-shaped three-dimensional carbon nanosheet matrix is obtained by directly carbonizing sodium citrate serving as a carbon source, and titanium dioxide and sorbitol which are rich in hydroxyl are selected to be chemically bonded with the matrix. The preparation method disclosed by the invention is rapid, simple and convenient, mild in reaction condition, green and pollution-free, the prepared composite material not only can improve the hydrophilicity and the reproducibility of the carbon material and solve the problem that titanium dioxide serving as an adsorbent is difficult to well circulate and recycle in an aqueous solution, but also can increase functional groups, namely, active sites, on the surface of the adsorbent, effectively improves the adsorption performance on scattered metal gallium ions, and has practical applicability.

Description

Technical field[0001]In the field of effective recovery material of gallium, the present invention is specifically involved in the silver ear-shaped three-dimensional carbon nanoform, which is carbonized with a high temperature of citrate, and the substrate is rich in carboxyl group and a hydroxyl group, and the butyl butyl titanate and sorbitol are complicated with sorbitol on the substrate. The synthesized hydroxyl group modified silver ear-shaped three-dimensional carbon nanoflakes are intended to be effectively adormeted from solutions containing metal ionome.Background technique[0002]my country is the largest country in the world, accounting for about 80-85% of the world, mainly in Inner Mongolia, Guangxi, Guizhou, Henan, Shanxi and several provinces in Yunnan, which is the associated ore, generally vanadium. Magnetite, flash zinc, lead zinc ore, coal fly ash, etc. At present, my country's metal gallium resources are relatively more, but this metal is extremely rare and is not ...

Claims

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Application Information

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IPC IPC(8): B01J20/20B01J20/28B01J20/30B01D15/08C22B58/00B82Y30/00B82Y40/00
CPCB01J20/205B01J20/28014B01J20/3078B01D15/08C22B58/00B82Y30/00B82Y40/00Y02P10/20
Inventor 崔俊硕李文康李鑫竺熊英王月娇单炜军于海彪娄振宁
Owner LIAONING UNIVERSITY
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