This research work is focused on development of solid state electrolyte free pH sensor for biomedical applications. Thin films of silver — silver iodate (Ag/AgIO3) and antimony oxide (Sb2O3) was deposited on glass substrates and successfully employed them as reference and working electrodes respectively. The structural, morphological, and electrical properties of the working and reference electrodes were investigated using X-Ray Diffraction (XRD), Field Emission Scanning Electron Microscope (FESEM) and high resistance electrometer respectively. Open circuit potential was measured in a universal pH solutions. The developed sensor exhibited the sensitivity of ∼ 43.1552 mV pH−1. Time domain pH monitoring for continuous usage was recorded over a period of several hours and reported.
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