Effect of solution pH and ionic strength on the stability of poly(acrylic acid)-encapsulated multiwalled carbon nanotubes aqueous dispersion and its application for NADH sensor

Amperometric l-glutamate biosensor based on bacterial cell-surface displayed glutamate dehydrogenase

“…2, curve e), indicating that the Nafion/PEI-MWNTs/GCE had better electrocatalytic activity to NADPH oxidation, which might be resulted from the excellent catalytic properties of the MWNTs. Similar results were reported for electrocatalytic oxidation of NADH (the reduced form of nicotinamide adenine dinucleotide) at MWNTs modified electrodes [51,52].…”

“…However, NAD(P)H is reported exhibited high overpotential at bare electrode [51], which means the direct electrochemical detection of NAD(P)H will occur at high potential, arising possible interference from other easily oxidizable species. Therefore, it is important to lower the overpotential of NAD(P)H during electrochemical masurement.…”

Simultaneous voltammetric detection of dopamine and uric acid at their physiological level in the presence of ascorbic acid using poly(acrylic acid)-multiwalled carbon-nanotube composite-covered glassy-carbon electrode

“…Recent electrochemical studies have shown that CNTs are capable of promoting certain types of electron-transfer reactions (Baughman et al, 1999) to minimize electrode surface-fouling, and to enhance electrocatalytic activity (Banks et al, 2004). It was reported that GCEs modified with multiwalled carbonnanotubes (MWNTs) showed a remarkable decrease in the over-potential for nicotinamide adenine dinucleotide (NADH) oxidation and also circumvented NADH surface-fouling effects (Musameh et al, 2002;Zhang et al, 2004;Liu et al, 2006b). It is known that the microenvironment of CNTs was changed after they are dispersed in polymer, because the inter-nanotube van der Waals forces are decreased; accordingly, the solubility of CNTs in water is obviously improved.…”

Die Anwendung von Viren in Chemo‐ und Biosensoren

“…[142][143][144][145][146] Solche elektrochemische Sensoren wurden für den Nachweis von Bakterien, Viren und Toxinen vorgeschlagen. [147] Die Elektrodenoberflächen können mit verschiedenartigen Materialien beschichtet werden, z.…”