Design of titanium nitride- and wolfram carbide-doped RGO/GC electrodes for determination of gallic acid

Stankovic, Dalibor M.; Ognjanovic, Milos; Martin, Fabian; Svorc, L'ubomir; Mariano, José; Antic, Bratislav

http://hdl.handle.net/10400.1/12896

Use this identifier to reference this record.

Name:	Description:	Size:	Format:
Design of titanium nitride - 12896.pdf		988.47 KB	Adobe PDF	Download

Send Feedback

Authors

Stankovic, Dalibor M.

Abstract(s)

In the present paper, the electrochemical behavior and the properties of two modified glassy carbon (GC) electrodes used for quantification of gallic acid in sweet wines were compared. A comparative study was conducted between titanium nitride- or wolfram carbide-doped reduced graphene oxide, labeled as TNrGO and WCrGO, respectively, modified GC electrodes, which are promising composite nanomaterials for electroanalytical applications. For the first time, WCrGO was synthesized and its electroanalytical properties compared with those of TNrGO. Results showed that the proposed materials exhibited enhanced characteristics, e.g., low limits of detection (1.1 mu M and 3.1 mu M for TNrGO and WCrGO, respectively), wide linear ranges (for TNrGO 4.5-76 mu M and for WCrGO 10-100 mu M), low adsorption, and low background current, which make them promising candidates for electrochemical sensing applications.

Keywords

Glassy-Carbon electrode Flow-injection analysis Graphene oxide Electrochemical sensor Antioxidant capacity Voltammetric determination Sensitive detection Graphite oxide Green approach Wine samples