A Novel Solid-State Copper (II) Thin-Film Micro-Sensor Based on Organic Membrane and Titanium Dioxide Nano-Composites

摘要

Micro-fabrication and characterization of new organic membrane and titanium dioxide nano-particleshybrid based copper (II) micro-sensor have been demonstrated. The realized nano-composites basedthin-film micro-sensor incorporates titanium dioxide nano-particles as sensitive materials, poly (vinylchloride) as supporting matrix and 2-nitrophenyl octyl ether as plasticizer. The micro-sensor based onthese materials provides near Nernestian response for copper (II) ions (sensitivity of 23 0.5 mV/-1 -5 -1 -6 concentration decade) covering the range of 10 -10 mole L and detection limit of 4.75x10 . Thedeveloped thin-film micro-sensors was successfully used in the determination of copper (II) in somesamples with high accuracy (97%) and precision (<3%).