Application of graphene quantum dots in identification of dihydroxybenzene isomers and detection of o-hydroquinone, hydroquinone and antioxidants

• Main Authors: WU YIWEI, GAO JUN, LEI YAYA, HUANG XIAOBING, YU XIAOXIAO
• Format: Patent
• Language: Chinese; English
• Published: 31.10.2023
• Subjects: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; PHYSICS; TESTING

The invention relates to the technical field of chemical analysis, in particular to application of graphene quantum dots in identification of dihydroxybenzene isomers and detection of o-hydroquinone, hydroquinone and antioxidants. The graphene quantum dots are nitrogen and silicon co-doped graphene quantum dots N, Si-GQDs prepared by the following method: dissolving printer waste carbon powder and ethylenediamine in water according to a mass ratio of 5: (9-45), reacting at 160-200 DEG C for 2-16 hours, and filtering to obtain the nitrogen and silicon co-doped graphene quantum dots. On the basis of the research, the invention further finds that the nitrogen and silicon co-doped graphene quantum dots prepared by synthesizing waste carbon powder and ethanediamine through a one-pot method not only can be used for identifying isomers of o-hydroquinone, m-hydroquinone and hydroquinone, but also can be used for quantitative detection of o-hydroquinone, hydroquinone and antioxidants (AA and GSH), and the method is se