Patent ID: 11905605
Assignee: XIAMEN UNIVERSITY
Field: Materials, metallurgy (Chemistry)
Classification: CPC C | IPC C

Claim 0:
1. A method for preparing a halogenated graphene material in an electrolysis system,
wherein, said electrolysis system comprises:
a working electrode, said working electrode comprises graphite and/or amorphous carbon;
a counter electrode, said counter electrode is an electrical conductor; and
an electrolyte solution, said electrolyte solution is a conductive solution comprising a halide ion and/or a halogen-containing complex ion;
wherein, said method comprises the following steps:
applying a voltage between the working electrode and the counter electrode, so that the graphite and/or amorphous carbon is exfoliated under the action of electrolysis to generate a halogenated graphene;
wherein, before and/or during applying the voltage, applying a light illumination to the electrolysis system;
wherein said light illumination reaches an intensity as follows: said light illumination is capable of reducing the absorbance value at 650 nm of a chromogenic solution with a volume equal to that of the electrolyte solution by 10% or more within 30 minutes, the chromogenic solution is an aqueous solution containing methylene blue and oxalic acid, with a methylene blue concentration of 10−6 M, and an oxalic acid concentration of 0.1 M;
wherein said light illumination applies light having a wavelength of a nm, a=200˜2500,
wherein said light illumination uses a light source which is a xenon lamp, and
wherein said electrolyte solution comprises NaX, wherein X represents F, Cl, Br, or I.