(559l) Surface Roughed Pt Nanowires and Their Application As Electrochemical Sensors

Sensor platforms require significant improvements in sensitivity, specificity and parallelism to meet the future needs in a variety of fields. In this research, platinum nanowires with different surface roughness were fabricated by a controlled galvanostatic electrodeposition method for electrochemical sensors toward hydrogen peroxide detection. The electrochemical behavior has been studied for oxidation of hydrogen peroxide by using cyclic voltammetry and amperometry in phosphate buffer solution. Surface roughness was found to enhance the sensing performance of the Pt nanowire based electrochemical sensor towards hydrogen peroxide, including the higher sensitivity, lower limit of detection and wider linear dynamic range. Furthermore, the effect of the nanowire concentration has been found to play a role in the electrochemical sensitivity. Finally, real sample measurement is studied to quantify the sensing capability based on the surface roughed Pt nanowires.