US 11,905,605 B2
Graphene oxide material, halogenated graphene material, preparation methods therefor, and electrolysis system
Duhong Chen, Fujian (CN); Dongping Zhan, Fujian (CN); Binbin Zhang, Fujian (CN); and Zhongqun Tian, Fujian (CN)
Assigned to XIAMEN UNIVERSITY, Fujian (CN)
Appl. No. 17/756,240
Filed by XIAMEN UNIVERSITY, Fujian (CN)
PCT Filed May 13, 2020, PCT No. PCT/CN2020/090056
§ 371(c)(1), (2) Date May 19, 2022,
PCT Pub. No. WO2021/098165, PCT Pub. Date May 27, 2021.
Claims priority of application No. 201911139799.1 (CN), filed on Nov. 20, 2019; and application No. 201911140082.9 (CN), filed on Nov. 20, 2019.
Prior Publication US 2023/0002916 A1, Jan. 5, 2023
Int. Cl. C25B 1/135 (2021.01); C01B 32/194 (2017.01); C01B 32/198 (2017.01)
CPC C25B 1/135 (2021.01) [C01B 32/194 (2017.08); C01B 32/198 (2017.08)] 16 Claims
OG exemplary drawing
 
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.