Incorporating Cerium Vanadate into Multi-Walled Carbon Nanotubes for Fabrication of Sensitive Electrochemical Sensors toward Sulfamethazine Determination in Water Samples

We developed a simple hydrothermal technique for the fabrication of flexible integrated composite containing cerium vanadate (CeVO4) and multi-walled carbon nanotubes (MWCNTs). The CeVO4/MWCNTs possessed good conductivity interesting electrochemical catalytic performance when immobilized on glassy electrode (GCE). This CeVO4/MWCNTs-GCE sensor provided excellent analytical detection sulfonamide antibacterial drug sulfamethazine (SMZ). Benefiting from significantly enlarged surface area modified effect CeVO4-MWCNTs, offered high sensitivity, stability, fine selectivity, remarkable limit (LOD) 0.02 ?M. Furthermore, also exhibited ideal with recovery precision applied to SMZ residue in real aquaculture water samples.