Low temperature methanol sensor based on cobalt ferrite (CoFe2O4) nanorods

Ferrite cobalt (CoFe2O4) Nano rods were prepared by in situ hydrothermal method. Then 0.05 ml of colloidal fluid of nanostructure was injected on interdigitated electrodes (IDE) on a printed circuit board (PCB) substrate. Structural and morphological analysis such as X-ray diffraction (XRD) analysis and scanning electron microscopy (SEM) showed the Nano rod structure of material. Sensor has the best response of 13.3% in low temperature of 90 °C for 100 ppm methanol vapors and is repeatable and has a chemical stability that makes it useful to be used in different fields such as industries and medicine to detect methanol vapors.

Keywords:

methanol sensor , CoFe2O4 nanorods , hydrothermal , low temperature.