A nanocomposite of NiFe₂O₄–PANI as a duo active electrocatalyst toward the sensitive colorimetric and electrochemical sensing of ascorbic acid

Abstract

<p>A non-enzymatic, duo-active sensor using nickel ferrite/PANI (NF–PANI) nanocomposite based on peroxidase mimic and electrochemical methods for sensitive and selective detection of ascorbic acid.</p>

Hierarchically porous 2D carbon from bio-waste: a sustainable, rapid, and efficient oxidase mimic for the colorimetric detection of ascorbic acid

“…4(b) shows the Lineweaver-Burk plot of the 2D carbon nanozyme having an R-square value of 0.99, which indicated a good linear response. Beer-Lambert's law was utilized to calculate the initial reaction rate using eqn (1).…”

“…Ascorbic acid (A.A.) is one of the crucial biochemical molecules of the vitamins group and plays a vital role in many biological functions, such as a free radical scavenger and in cancer inhibition and prevention. [1][2][3][4][5][6] Unfortunately, the human body cannot produce A.A., so daily diet supplements are the only source to complete such needs. The standard range of A.A. in healthy humans is between 0.6-2 mg dL À1 .…”

“…2 Thus, a regular diagnosis of the A.A. content becomes paramount for a fair and healthy body and has received increasing worldwide attention. In this connection, various techniques, including electrochemical techniques, 1,6,7 chromatography, 8,9 chemiluminescence, 10,11 enzyme-linked immunosorbent assay (ELISA), 12 fluorescence, 13,14 and colorimetric techniques, 1,15 have been well studied and established. Biosensing platforms have a broad range of technological arrays and have been explored to detect various small biomolecules, tumor markers, the A.A. level, etc.…”

Infinite Coordination Polymer Nanoparticles Used for Fluorescence Turn-On Sensing of Ascorbic Acid

“…The excess intake of AA may contribute to the formation of kidney stones, diarrhea, and gastritis. Several symptoms of AA deficiency are known as scurvy, decreased resistance to diseases, and inflammation of the gums . Therefore, it is significant to develop a sensitive AA assay to monitor its levels.…”

“…Several symptoms of AA deficiency are known as scurvy, decreased resistance to diseases, and inflammation of the gums. 4 Therefore, it is significant to develop a sensitive AA assay to monitor its levels. So far, a wide range of analytic assays have been exploited for AA determination, where the fluorescence assay has attracted great attention due to its inherent advantages such as simplicity, high sensitivity, and rapid response.…”