▎ 摘　　要

NOVELTY - Method for separating graphene oxide by electrophoresis, involves adding graphene oxide, deionzied water and magnetic stirrer and stirring to obtain graphene oxide aqueous solution, subjecting the solution to ultrasonic separation and cooling, repeating the above-mentioned steps, cleaning glass separated groove and copper sheet electrode, adding deionzied water to the groove, inserting the electrode into the groove, adding the solution slowly, supplying power, initiating electrophoresis separation, and sampling to obtain the separated graphene oxide. USE - The method is useful for separating graphene oxide by electrophoresis. ADVANTAGE - The method is rapid, efficient, environmentally-friendly as it is harmless and conserves energy, easy to perform, achieves quantitative separation, has good repeatability, and requires less amount of raw material which are easily obtainable. The device is simple, and the investment for the device is low. DETAILED DESCRIPTION - Method for separating graphene oxide by electrophoresis, involves (a) preparing graphene oxide aqueous solution by adding graphene oxide (50-1000 mg), deionzied water (100-2000 ml) and magnetic stirrer and stirring at speed of 100-1000 revolutions for 30-60 minutes and pouring the mixture into a wide-mouth bottle, subjecting the mixture to ultrasonic separation for 10-60 minutes at 300-1000 Watts, cooling for 2-20 minutes at room temperature, subjecting to ultrasonication for 10-60 minutes, repeating the above-mentioned steps for 2-5 times to separate the graphite oxide into graphene oxide to obtain graphene oxide aqueous solution, and (b) cleaning glass separated groove and copper sheet electrode, adding deionzied water (100-1000 ml) to the groove, inserting the copper sheet electrode into two internal ends of the groove containing ionized water, connecting the copper sheet electrode to positive pole and negative pole of the direct current power, adding graphene oxide aqueous solution (2-10 ml) through a liquid moving pipe slowly, supplying the direct current power, adjusting voltage to 30 V, initiating electrophoresis separation, and sampling near positive pole and remote regions of the positive pole when there is brown graphene oxide contacted to the positive pole to obtain the separated graphene oxide.