MXene-based two-dimensional silver compound as well as preparation method and application thereof

A composite, silver salt technology, applied in the field of carbon nanomaterials, can solve the problems of using toxic reagents, a large number of catalysts and raw materials, low catalytic efficiency, etc., and achieve the effects of reducing agglomeration, simple reaction process, and improving reaction rate.

Inactive Publication Date: 2021-07-20
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Despite many achievements, these nanocomposites still suffer from one or more disadvantages, such as the need for large amounts of catalysts and raw materials, low catalytic efficiency, and the use of toxic reagents during synthesis, etc.

Method used

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  • MXene-based two-dimensional silver compound as well as preparation method and application thereof
  • MXene-based two-dimensional silver compound as well as preparation method and application thereof
  • MXene-based two-dimensional silver compound as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The MXene-based two-dimensional silver composite provided in this example is prepared through the following steps:

[0036] 1) Add 0.5gTi 3 AlC 2 Dissolve in 10mL 48% HF, stir at 60°C for 20h, centrifuge the reacted solution at 3000rpm for 10min, and dry the solid to obtain MXene;

[0037] 2) The cuttlefish juice powder and water were subjected to a carbonization reaction at 180°C for 12 hours at a ratio of 1:20, and then freeze-dried for 24 hours to obtain a water-soluble fluorescent carbon quantum dot solid;

[0038] 3) Dissolve 0.05 g of the water-soluble fluorescent carbon quantum dot solid with distilled water, and make it into a 0.5 mg / mL water-soluble fluorescent carbon quantum dot solution at a constant volume in a 100 mL volumetric flask, ready for use.

[0039] 4) Take 100mL of the water-soluble fluorescent carbon quantum dot solution prepared above and place it in a 250mL round-bottom flask. The outer wall of the round-bottom flask is covered with tin foil ...

Embodiment 2

[0043] The MXene-based two-dimensional silver composite provided in this example is prepared through the following steps:

[0044] 1) Add 0.5gTi 3 AlC 2 Dissolve in 10mL 48% HF, stir at 60°C for 20h, centrifuge the reacted solution at 3000rpm for 10min, and dry the solid to obtain MXene;

[0045] 2) The cuttlefish juice powder and water were subjected to a carbonization reaction at 180°C for 12 hours at a ratio of 1:20, and then freeze-dried for 24 hours to obtain a water-soluble fluorescent carbon quantum dot solid;

[0046]3) Dissolve 0.05 g of the water-soluble fluorescent carbon quantum dot solid with distilled water, and make it into a 0.5 mg / mL water-soluble fluorescent carbon quantum dot solution at a constant volume in a 100 mL volumetric flask, ready for use.

[0047] 4) Take 100mL of the water-soluble fluorescent carbon quantum dot solution prepared above and place it in a 250mL round-bottomed flask. The outer wall of the round-bottomed flask is covered with tin fo...

Embodiment 3

[0049] The MXene-based two-dimensional silver composite provided in this example is prepared through the following steps:

[0050] 1) Add 0.5gTi 3 AlC 2 Dissolve in 10mL 48% HF, stir at 60°C for 20h, centrifuge the reacted solution at 3000rpm for 10min, and dry the solid to obtain MXene;

[0051] 2) The cuttlefish juice powder and water were subjected to a carbonization reaction at 180°C for 12 hours at a ratio of 1:20, and then freeze-dried for 24 hours to obtain a water-soluble fluorescent carbon quantum dot solid;

[0052] 3) Dissolve 0.05 g of the water-soluble fluorescent carbon quantum dot solid with distilled water, and make it into a 0.5 mg / mL water-soluble fluorescent carbon quantum dot solution at a constant volume in a 100 mL volumetric flask, ready for use.

[0053] 4) Take 100mL of the water-soluble fluorescent carbon quantum dot solution prepared above and place it in a 250mL round-bottomed flask. The outer wall of the round-bottomed flask is covered with tin f...

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Abstract

The invention discloses an MXene-based two-dimensional silver compound and a preparation method and application thereof, and aims to provide a high-activity and high-stability MXene-based two-dimensional silver compound and a preparation method and application thereof, and the technical scheme is that the MXene-based two-dimensional silver compound comprises MXene and a silver compound loaded on the surface of the MXene. The silver compound is obtained through in-situ reaction of cuttlefish ink carbon quantum dots and soluble silver salt, and the two-dimensional silver compound is used for catalyzing reduction reaction of p-nitrophenol. The invention belongs to the technical field of carbon nanomaterials.

Description

technical field [0001] The invention belongs to the technical field of carbon nanomaterials, in particular to an MXene-based two-dimensional silver compound and its preparation method and application. Background technique [0002] p-Nitrophenol is widely used in the fields of pharmaceuticals, pesticides, explosives, dyes and leather processing. A large number of studies have shown that p-nitrophenol is persistent in aquatic environments and soils, and p-nitrophenol is carcinogenic and genotoxic to humans and wild organisms. Therefore, reducing the content of nitrophenol in the aquatic environment has become the focus of researchers' research. At present, commonly used methods include photocatalytic degradation, electrochemical oxidation, adsorption and catalytic hydrogenation. The reduction product of nitrophenol, p-aminophenol, has low toxicity and is an important chemical raw material with high commercial value. [0003] The common method of reducing p-nitrophenol to p-a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/22C07C213/02C07C215/76
CPCB01J27/22C07C213/02C07C215/76
Inventor 周丽华陈颖欣杨春丽袁勇
Owner GUANGDONG UNIV OF TECH
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