Method for controllably preparing nanoscale ultrathin graphdiyne and derivative thereof

Patent metadata

Field	Value
Publication number	US-2026078005-A1
Application number	US-202519318721-A
Country	US
Kind code	A1
Filing date	Sep 4, 2025
Priority date	Sep 14, 2024
Publication date	Mar 19, 2026
Grant date	—

Abstract

Disclosed is a method for controllably preparing nano-scale ultrathin graphdiyne and a derivative thereof. The method comprises the following steps of: mixing and ball-milling a substance A and a substance B to obtain mixed powder, wherein the substance A is a copper-containing salt, and the substance B is a salt which is insoluble in acetone and pyridine, soluble in water or acid and indecomposable within 200° C.; putting the mixed powder into a closed heating environment, heating the mixed powder at 200-450° C., cooling the mixed powder to room temperature, then dropwise adding an acetone solution containing a monomer of graphdiyne or a derivative thereof, maintaining the temperature for 1-2 days, and then cooling the mixture to room temperature; and then, soaking the powder with diluted hydrochloric acid for 1-3 days, followed by suction filtration, and freeze-drying to obtain a nano-scale ultrathin film of graphdiyne and a derivative thereof.

First claim

We claim:

1 . A method for controllably preparing nano-scale ultrathin graphdiyne and a derivative thereof, comprising the following steps:
(1) mixing and ball-milling a substance A and a substance B to obtain mixed powder of the substance A and the substance B, and uniformly dispersing the substance A on a surface of the substance B, wherein the substance A is a copper-containing salt, and the substance B is one or more of sodium chloride, potassium chloride, sodium sulfate and potassium sulfate; (2) putting the mixed powder into a closed heating environment, heating the mixed powder to 200-450° C. in an atmosphere of inert gas and hydrogen, maintaining hydrogen introduction and the heating temperature for 2-4 hours, and then cooling the mixed powder to room temperature; (3) adding the mixed powder into a container, adding a solvent, then dropwise adding an acetone solution containing a monomer of graphdiyne or a derivative thereof, stirring the mixture at 50-180° C., stopping stirring after the dropwise addition, maintaining the temperature for 1-2 days, and then cooling the mixture to room temperature; and (4) pouring out a liquid in the container after the reaction, washing the powder, then soaking the powder with dilute hydrochloric acid for 1-3 days, carrying out suction filtration with deionized water, collecting a filter cake, and freeze-drying the filter cake to obtain a nano-scale ultrathin graphdiyne film.

2 . The method for controllably preparing the nano-scale ultrathin graphdiyne and the derivative thereof according to claim 1 , wherein, in the step (1), a mass ratio of the substance A to the substance B is 0.5 to 20:100.

3 . The method for controllably preparing the nano-scale ultrathin graphdiyne and the derivative thereof according to claim 1 , wherein, in the step (1), the substance A is one or more of copper nitrate, copper chloride, copper acetate and copper sulfate, with or without water of crystallization.

4 . The method for controllably preparing the nano-scale ultrathin graphdiyne and the derivative thereof according to claim 1 , wherein, in the step (2), a gas flow ratio of the hydrogen to the inert gas is 1:3 to 1:1.

5 . The method for controllably preparing the nano-scale ultrathin graphdiyne and the derivative thereof according to claim 1 , wherein, in the step (3), a mass ratio of the powder to the monomer of the graphdiyne or the derivative thereof is 100:0.5 to 100:3.

6 . The method for controllably preparing the nano-scale ultrathin graphdiyne and the derivative thereof according to claim 1 , wherein, in the step (3), the monomer of the graphdiyne and the derivative thereof are one or more of hexaalkynyl benzene, 1,3,5-trialkynyl benzene and 1,3,5-triethynyl-2,4,6-trifluorobenzene.

7 . The method for controllably preparing the nano-scale ultrathin graphdiyne and the derivative thereof according to claim 1 , wherein, in the step (3), the solvent is a mixed solvent of acetone, pyridine and tetramethylethylene diamine prepared according to a volume ratio of 100:5:1.

Assignees

• Univ Nankai

Inventors

• Wang Huan
• Lu Tiantian

Classifications

• C01P2004/03

  obtained by SEM · CPC title

• C01P2004/04

  obtained by TEM, STEM, STM or AFM · CPC title

• C01P2002/72

  by d-values or two theta-values, e.g. as X-ray diagram · CPC title

• C01P2002/82

  by IR- or Raman-data · CPC title

• C01B32/15 Primary

  Nano-sized carbon materials · CPC title