Inhibitive potentiometric detection of trace metals with ultrathin polypyrrole glucose oxidase biosensor

Peripheral Nerve Regeneration Strategies: Electrically Stimulating Polymer Based Nerve Growth Conduits

“…104 As a biomaterial, PPY presents several advantages including biocompatibility, chemical stability in air and water, and reasonably high electrical conductivity under physiological conditions. 68 Polypyrrole has been utilized in a diverse array of technology development such as high-voltage batteries, 105 supercapacitor electrodes, 106–109 and biosensors, 110, 111 and in drug delivery systems. 112 The use of PPY derived scaffold materials in neural tissue engineering is extensive.…”

From Electrochemical Biosensors to Biomimetic Sensors Based on Molecularly Imprinted Polymers in Environmental Determination of Heavy Metals

“…In general, only few enzyme systems (HRP, GOx, β-galactosidase) have been applied. Enzyme immobilization is performed by classical techniques (see e.g., Moyo et al, 2014; Ayenimo and Adeloju, 2015; Rust et al, 2015; Fourou et al, 2016) or by entrapment in electrosynthesized polymers (polypyrroles, polyanilines, etc.). In all but one case, proposed biosensor are reported as sensitive to different heavy metals and in several cases they suffer interference from several other ones, so that total heavy metal concentration represents the most reasonable result of the application of these sensors to real samples.…”

“…The work of Ayenimo and Adeloju (2015) reported a new ultra-thin layer of polypyrrole with GOx immobilized for potentiometric detection of Cu 2+ , Hg 2+ , Cd 2+ , and Pb 2+ . The detection limits of Cu 2+ , Hg 2+ , Cu 2+ , and Pb 2+ were lower than the conventional biosensor that using thicker layer of polymeric material.…”

Visible-light-activated photoelectrochemical biosensor for the detection of the pesticide acetochlor in vegetables and fruit based on its inhibition of glucose oxidase

“…11 Recently, photoelectrochemical sensors based on enzyme inhibition have been fabricated, and exhibited favorable selectivity towards target molecules and ions. 12,13 Glucose oxidase (GOx) is oen used as an enzyme in studies of inhibition due to its low cost, good stability and high specic activity. However, most of the GOx based photoelectrochemical biosensors in the literature have been developed for the determination of the substrates of GOx.…”