▎ 摘　　要

NOVELTY - Preparing modified graphene oxide, comprises dissolving an organic silicon compound in a dimethylformamide solvent, mixing the solution with graphite oxide, performing ultrasonic treatment for 40 minutes, volatilizing the solvent while magnetically stirring the mixture, drying in a drying oven at 100-150 degrees C for 3 hours, drying the mixture for 2 hours under vacuum to obtain the modified graphite oxide, taking the modified graphite oxide, adding water, performing ultrasonic treatment for 10-30 minutes to obtain a modified graphene oxide solution, and drying the solution. USE - The modified graphene oxide is useful for removing lead ions in water (claimed). ADVANTAGE - The method is quick and easy to process; has high absorption efficiency with less amount of adsorbent; and solves the problem of lead contamination in water, and hence is environmental-friendly. DETAILED DESCRIPTION - Preparing modified graphene oxide, comprises dissolving an organic silicon compound in a dimethylformamide solvent, mixing the solution with graphite oxide, performing ultrasonic treatment to the mixture for 40 minutes, volatilizing the solvent while magnetically stirring the mixture, drying the mixture in a drying oven for 3 hours at 100-150 degrees C, drying the mixture for 2 hours under vacuum to obtain the modified graphite oxide, taking the modified graphite oxide, adding water, performing ultrasonic treatment for 10-30 minutes to obtain a modified graphene oxide solution, which is a uniformly dispersed brown solution, and drying the solution to obtain the modified graphene oxide. An INDEPENDENT CLAIM is also included for a modified graphene oxide, which is obtained by using graphene oxide as raw material and using the preparation method as mentioned above.