Electrochemical sensors and biosensors enable researchers to quantify little amounts of chemicals or physico-chemical parameters in experimental settings. This is accomplished with the utilization of sensitive electrodes which can identify little changes in electrical signs. Because of this sensitivity, they have diverse applications in engineering and medicine. Newer versions of sensors offer more prominent sensitivity and precision with the a help of Nanomaterials incorporated in electrodes used in the sensor.
Scientists driven by Wei Sun at the College of Chemistry and Chemical Engineering, Hainan Normal University have tested electrodes modified with Lithium Iron Phosphate (LFP) for biochemical analysis or rutin (a citrus flavonoid) and hemoglobin. As per the scientists, LFP is a promising candidate to develop new modified electrodes owing to its advantages such a low cost, environmental compatibility, high safety, non-toxicity, long cycle life and abundance in the environment.
Sun’s team employed scanning electron microscopy to distinguish nanosized LFP particles. The LFP modified electrodes were then prepared by casting the a solution of the particles over the surface of a Carbon Ionic Liquid Electrode (CILE) and adding drops of chitosan on the modified electrodes. Two separate electrodes were prepared for analyzing rutin and hemoglobin, respectively.
The group studied the Electrochemical movement of rutin and hemoglobin with these nano-LFP electrodes and achieved detection limits of 8.0 nmol L-1 for rutin and, in the case of hemoglobin, 0.068 mmol L-1 for trichloroacetic acid reduction and 0.07 μmol L-1 for hydrogen peroxide reduction.