PDDA-RGO/GCE Electrochemical Sensor for the Detection of Aspirin
This experiment synthesized polydiallyldimethylammonium chloride(PDDA)modified graphene(PDDA-RGO)nanocomposites by a simple one-step hydrothermal method using urea as a reducing agent and poly diallyl dimethyl ammonium chloride(PDDA)as a modifier.The structure of the synthesized PDDA-RGO was characterized by scanning electron microscopy,transmission electron microscopy,ultraviolet(UV),infrared(IR),and other techniques.An electrochemical sensor based on pdda-rgo modified glassy carbon electrode was prepared to detect Aspirin concentration at 5～2000μmol·L-1.The linear equation is I=0.2487c(ASP)+6.4128,correlation line-ar coefficient R2=0.9964,detection limit 1.18μmol·L-1.The ranges of blank spiking recovery rate are from 99.4％to 101.7％.The results indicate that the sensor can be successfully applied to detect the content of aspirin in samples.
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