temperature response and durability characterization of an opticalfiber sensor for the detection of hydrogen peroxide | 量子荧光|微型光纤光谱仪-ag贵宾会

hydrogen peroxide is a precursor to damage mechanisms in numerous applications; its monitoring is important and challenging. the effect of temperature on the perforomance and durability of a recently developed optical fiber sensors sensitice to the presence of hydrogen peroxide in low concentrations is investigated. the sensors are fabricated by immobilizing prussian blue within a multilayer of electrostatically self-assembled polyelectrolytes. the sensing principle of this optical electrode relies on the change in the intensity of the reflected light when prussian white is oxidized back to the blue state due to the presence of hydrogen peroxide. the amplitude of the intensity of the reflected light is found to vary with temperature in a quadratic fashion, but the characteristic response time which correlates with vary with temperature in a quadratic fashion, but the characteristic response time which correlates with concentration remains constant. thus the sensing device retains its abilities to determine and quantify the concentration of hydrogen peroxide in a liquid solution. additionally, the degradation of these fiber sensors when subjected to high temperature is examined. four optical fiber sensing devices were subjected to different testing conditions and a characterization protocol that included: measurement of the intensity of the intensity of the cyanide strtch(2150 cm-1) via raman micro spectroscopy; imaging with scanning electron microscopy; and measurement of the presence of iron ions using energy dispersive x-ray spectroscopy.