Pd doped SnO2 resistive film as a non-enzymatic glucose sensor

Abstract EN

A new sugar sensor based on metal oxide is presented here.

The variation on the sensor resistance is studied against different glucose and fructose concentrations (1 - 360 mg/dl).

The study is done for three different resistive films (i) pristine palladium oxide (PdOx); (ii) tin oxide (SnO2) and (iii) palladium doped tin oxide (Pd-SnO2).

The chemical reactions of glucose and fructose with surface species were studied .

Pd-SnO2 films show excellent and reliable response to glucose and fructose solution in comparison with the bare films (PdOx and SnO2).

Sensor performance was checked for blood of normal (120 mg/d) and diabetic (420 mg/d) patient.

The sensor showed remarkable response of ~2 and 12 for normal and diabetic patient respectively.

The non-enzymatic sensor showed a good stability, repeatability and reproducibility.

The structure and morphology of these films were characterized by X-ray diffractometer, Transmission Electron Microscopy (TEM).