Publication

Abstract : The innovative one step method employed here for the synthesis and surface modification of α-Fe2O3 is equally efficient and viable. The role of surface modification in maximising the output is obvious as terephthalic acid (TPA) crowned Fe2O3 (T-Fe2O3) nanoparticles exhibited better electrochemical properties than bare Fe2O3 when employed as an electrode modifier. It is first time, cysteamine sensors based on T-Fe2O3 nanoparticles were developed and displayed great response in terms of widest linear range, improved selectivity and sensitivity. When combined with glassy carbon electrode (GCE), the sensor achieved broad linear range from 8 µM to 3732 µM which is superior than reported till now. The sensor illustrated with disposable Screen printed electrode (SPE) exhibited widest linear range from 25 to 3900 µM with great linearity in a single calibration graph attributed by the high sensitivity of SPE. The results obtained with SPE lead pathway for designing of portable sensors.