Low-potential amperometric determination of NADH using a disposable indium-tin-oxide electrode modified with carbon nanotubes

Wang, Qiuhong; Li, Weibo; Bao, Ning; Yu, Chunmei; Gu, Hongchen

doi:10.1007/s00604-015-1666-6

Cited by 15 publications

(4 citation statements)

References 34 publications

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“…From the analysis, the average k value was determined as 1.12 × 10 4 L mol −1 s −1 . This value is comparable with the reported literature values, 9.38 × 10 4 L mol −1 s −1 , 21 6.7 × 10 4 L mol −1 s −1 51 8.63 × 10 3 L mol −1 s −1 52 and 1.67 × 10 4 L mol −1 s −1 . 53…”

Section: Resultssupporting

confidence: 91%

Electrochemical sensing of NADH using 4-nitrobenzenediazonium tetrafluoroborate salt functionalized multiwalled carbon nanotubes

et al. 2023

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Section: Resultssupporting

confidence: 91%

Electrochemical sensing of NADH using 4-nitrobenzenediazonium tetrafluoroborate salt functionalized multiwalled carbon nanotubes

et al. 2023

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“…A deprotonation step then takes place resulting in the formation of neutral NAD . radical that is immediately oxidized at NAD + . The deprotonation step, in theory, is facilitated by electrode surfaces rich in oxygen that are able to act as “proton acceptor”.…”

Section: Introductionmentioning

confidence: 99%

Electrochemical Behaviour of Microwave‐assisted Oxidized MWCNTs Based Disposable Electrodes: Proposal of a NADH Electrochemical Sensor

et al. 2018

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The effect of the oxidation degree of multiwalled carbon nanotubes (MWCNTs) for the detection of NADH was evaluated in this paper. MWCNTs were oxidized by microwave‐assisted sulfonitic treatment at different times (5, 10, 15, and 30 min) and deposited onto a graphite screen printed electrodes. Oxidized MWCNTs were characterized and the electrochemical performance evaluated. The best sensor in terms of sensitivity and stability was obtained after 15 minutes of oxidation (SPE/CNT15). A significant reduction of the NADH oxidation potential was recorded for oxidized MWCNTs compared with unmodified MWCNTs (0.270 V and 0.500 V, respectively vs. Ag/AgCl pseudo reference electrode), increasing the selectivity of the system. Chronoamperometric calibration curves carried out applying a potential of 0.3 V for 1 min were linear in the 4–35 μM range of NADH. A limit of detection of 1 μM was achieved with negligible surface fouling (three consecutive calibration curves, 30 total measurements: slope decrease 5.9 %). Inter electrode reproducibility (n=13) was good resulting in RSD of 15.2 % and 5.0 % for the peak intensity and the oxidation potential, respectively. Quantification of glucose in white wine samples was carried out to demonstrate the ability of the NADH sensor to work in real samples. A good correlation with a spectrophotometric kit for the glucose quantification was achieved.

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“…Table provides a comparison of the SPE‐MagNP/C‐dot electrode performance for NADH, with the performance of other modified electrodes, including graphene oxide/MagNP , IL/NiO/NPs/CPE , screen‐printed electrode modified with reduced graphene oxide (RGO) and poly(allylamine hydrochloride) , graphene‐pyrroloquinoline quinone , indium‐tin‐oxide electrode modified with carbon nanotubes and carbon ceramic electrode modified with the natural carotenoid crocin and multi‐walled carbon nanotubes .…”

Section: Resultsmentioning

confidence: 99%

Magnetite Nanoparticles Bonded Carbon Quantum Dots Magnetically Confined onto Screen Printed Carbon Electrodes and their Performance as Electrochemical Sensor for NADH

et al. 2017

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Hybrid magnetite/carbon quantum dots (MagNP/C‐dots) were prepared and their characterization performed by high resolution transmission electron microscopy (HR‐TEM), X‐ray diffraction (XRD) and X‐ray photoelectron spectroscopy (XPS). Because of their suitable magnetization and electrochemical properties, they were used as versatile electrode modifiers after magnetically confining onto screen printed carbon electrodes (SPE), with the aid of a miniature external magnet. The reported strategy introduces a convenient procedure for assembling modified electrodes, since the nanoparticles can be easily released by removing the magnet. The non‐enzymatic magnetic biosensor showed excellent performance in the determination of NADH at the concentration range 2×10−7 to 5×10−6 mol L−1, exhibiting a sensitivity of 0.15 μmol L−1 and detection limit of 20 nmol L−1. The MagNP/C‐dots/SPE sensor was also successfully applied for the determination of NADH in serum samples. The interference of typical biological molecules has also been investigated.

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Low-potential amperometric determination of NADH using a disposable indium-tin-oxide electrode modified with carbon nanotubes

Cited by 15 publications

References 34 publications

Electrochemical sensing of NADH using 4-nitrobenzenediazonium tetrafluoroborate salt functionalized multiwalled carbon nanotubes

Electrochemical sensing of NADH using 4-nitrobenzenediazonium tetrafluoroborate salt functionalized multiwalled carbon nanotubes

Electrochemical Behaviour of Microwave‐assisted Oxidized MWCNTs Based Disposable Electrodes: Proposal of a NADH Electrochemical Sensor

Magnetite Nanoparticles Bonded Carbon Quantum Dots Magnetically Confined onto Screen Printed Carbon Electrodes and their Performance as Electrochemical Sensor for NADH

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