Preparation of gold decorated SiO2@polyaniline core–shell microspheres and application as a sensor for ascorbic acid

Preparation in-situ of carbon nanotubes/polyaniline modified electrode and application for ascorbic acid detection

“…The obtained modified electrode was used for electrochemical detection of the AA in aqueous solution and showed a broader linear range of 1.0 × 10 −6 mol L −1 -4.5 × 10 −4 mol L −1 and the detection limit was 1 × 10 −7 mol L −1 . The detection limit is lower than those of the similar electrodes obtained by other ways [27][28][29][30].…”

An Electrochemical Sensing Platform Based on Iridium Oxide for Highly Sensitive and Selective Detection of Nitrite and Ascorbic Acid

“…The oxidation potential value (0.025 V) is significantly lower than the AA oxidation potential reported in previous research articles. 40,[45][46][47][48][49][50][51] The results indicate that the presented modified electrode is distinguished by a higher efficiency in the selective detection of ascorbic acid compared to other electrocalysts.…”

“…Due to the crucial role of AA in biochemistry and in industrial applications, recently there is a considerable research interest to develop electrochemical sensors for detection of AA content in various samples including foods, drugs and biological fluids. [40][41][42][43][44][45][46][47][48][49][50][51] Among the above-mentioned modified electrodes-catalysts applied for nitrite detection, metal oxide-modified electrodes possess some unique electrochemical properties and advantages compared to the other -high stability, enhancement of reaction rate due to the redox couples of oxide species of two different states, as well as weak adsorption or exclusion of hydrogen species on an oxide surface. 31 Because of the high electron transfer rate constant of Ir(IV)/Ir(III) redox couple, IrO x were used as an electron transfer mediator and successfully applied in electrocatalysis.…”

H2S-Sensing Studies Using Interdigitated Electrode with Spin-Coated Carbon Aerogel-Polyaniline Composites

“…Among the array of conducting polymers (CP), polyaniline (PANI) is considered highly stable, with a unique redox chemistry and the ability to electrically switch between its conductive and resistive states through the doping/dedoping process, which can be controlled by acid/base reaction [ 6 , 7 , 8 ]. The redox property of PANI and its derivative polymers make them applicable for electrochemical sensing [ 9 , 10 , 11 ]. Their doping/dedoping property also expands their useability for gas sensing [ 12 , 13 , 14 ].…”