Bismuth vanadate/graphene quantum dot: A new nanocomposite for photoelectrochemical determination of dopamine

Add time:08/04/2019    Source:sciencedirect.com

A photoelectrochemical sensor for dopamine was fabricated by the immobilization of bismuth vanadate (BiVO4) and graphene quantum dots on a fluorine-doped tin oxide (FTO) glass electrode. Electrochemical impedance spectroscopy experiments demonstrated that the presence of graphene quantum dots contributed to the decrease in charge transfer resistance of the sensor under irradiation of visible light in the presence of dopamine. The photocurrent signals obtained were proportional to the dopamine concentration from 3.6 × 10−8 to 2.5 × 10−4 mol L−1, with a detection limit estimated at 8.2 × 10−9 mol L−1 and a limit of quantification at 2.7 × 10−8 mol L−1.

We also recommend Trading Suppliers and Manufacturers of SODIUM AMMONIUM VANADATE (cas 12055-09-3). Pls Click Website Link as below: cas 12055-09-3 suppliers

Prev:Zinc vanadate nanorods and their visible light photocatalytic activity
Next:Mechanism insight into rapid photocatalytic disinfection of Salmonella based on vanadate QDs-interspersed g-C3N4 heterostructures)