รายละเอียดผลงาน

A selective ?uorescent sensor based on graphene quantum dots (GQDs) was developed for the determination of silver ions (Ag+). The GQDs were prepared by the citric acid pyrolysis method. In the presence of mercury ions (Hg2+), the ?uorescence intensity of the GQDs decreased linearly and it was fully recovered by the hydrolysis of thioacetamide (TAA), giving hydrogen sul?de in the reaction system. This research study was aimed at using the ?uorescence turn-o? sensor for the selective determination of Ag+. Upon the addition of Ag+, the ?uorescence intensity of the generated sul?de-(Hg2+ quenched GQDs) decreased as a linear function of the Ag+ concentration. Then, the acquired GQDs showed steady, selective, and highly sensitive detection of Ag+. The experimental parameters a?ecting the ?uoresc