Method for preparing MXene quantum dot by etching with alkali liquor

A technology of quantum dots and lye, which is applied in the field of MXene quantum dots prepared by lye etching, can solve problems such as environmental and human hazards, and the performance of quantum dots is greatly affected, and achieves the advantages of increased concentration, easy control of reaction conditions, and low cost Effect
CN110371979AActive Publication Date: 2019-10-25UNIV OF SCI & TECH BEIJING
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
UNIV OF SCI & TECH BEIJING
Publication Date
2019-10-25

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Abstract

The invention relates to a method for preparing a MXene quantum dot by etching with an alkali liquor, belonging to the field of semiconductor materials. The method comprises the following steps: weighing a MAX phase, an alkaline compound and water for subsequent usage; dissolving the alkaline compound into the water so as to form an alkaline solution; adding the MAX phase into the alkaline solution, and placing an obtained solution under the condition of a room temperature so as to form a turbid solution; centrifuging the turbid solution obtained in the step 3, and carrying out vacuum filtering through a filter so as to obtain a MXene quantum dot containing alkaline solution; dialyzing the MXene quantum dot containing alkaline solution so as to remove alkaline ions and metal ions in the solution; and mixing an organic solvent with the MAX phase under stirring so as to prepare the MXene quantum dot. The method provided by the invention has the advantages of simple preparation process, environmental friendliness, low cost, less time consumption and applicability to large-scale production; meanwhile, the MXene quantum dot is proved to have universality to a MAX material.
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Description

technical field

[0001] The invention belongs to the field of semiconductor materials, and in particular relates to a method for preparing MXene quantum dots by alkaline solution etching, which is prepared by soaking in alkaline solution at normal temperature. Background technique

[0002] With the discovery of graphene, ultrathin two-dimensional nanomaterials have been developed rapidly, especially two-dimensional transition metal carbides, nitrides and carbonitrides. The two-dimensional MXene material has good hydrophilicity because of its excellent electrical conductivity, and because a large number of -OH, -F, and oxygen-containing groups are connected to the sheet. Because of its perfect combination of conductivity and hydrophilicity, it is widely used in catalysis, energy storage, photoelectricity, biology and other fields. However, most of the traditional MXene quantum dot preparation methods are to cut the layered structure MXene into quantum dots by the precursor MX...

Claims

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