Application of reduced graphene oxide and carbon nanotube modified electrodes for measuring the enzymatic activity of alcohol dehydrogenase

Wang, Xianlong; Li, Li; Wang, Yanping; Xu, Chongzheng; Zhao, Bo; Yang, Xiaodi

doi:10.1016/j.foodchem.2012.11.137

Cited by 8 publications

(2 citation statements)

References 26 publications

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“…Usually, it is prepared by chemical or electrochemical reduction of graphene oxide (GO). For instance, chemical reduction of GO to RGO was realized in the presence of AA [11], hydrazine [12,13], malt [14]. In situ preparation of RGO was possible by electrochemical reduction at constant potential [15,16] or by cycling the potential [17][18][19].…”

Section: Introductionmentioning

confidence: 99%

Electrochemical determination of NADH using screen printed carbon electrodes modified with reduced graphene oxide and poly(allylamine hydrochloride)

2015

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We describe a new type of NADH sensor based on a screen-printed electrode (SPE) modified with reduced graphene oxide (RGO) and poly(allylamine hydrochloride) (PAH). A mixture of graphene oxide (GO) and PAH was deposited on the surface of a carbon working electrode, and RGO was prepared in-situ by electrochemical reduction of GO. The oxidation peak of NADH was recorded at +450 mV (vs. silver pseudo-reference). Under optimized conditions, the electrode exhibits high electrocatalytic activity toward NADH oxidation, expressed by a high rate constant and a stable response up to 0.8 mM concentrations. The sensitivity is 108.6 μA·mM −1 ·cm −2 , the response time is 20 s (for 95 % of the steady state current), and the detection limit is 6.6 μM (at an S/N ratio of 3). A peak separation of about 300 mV was achieved in differential pulse voltammetric determination of NADH in the presence of ascorbic acid. This makes the new sensor a useful tool with potential analytical application in different dehydrogenase based systems.

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Section: Introductionmentioning

confidence: 99%

Electrochemical determination of NADH using screen printed carbon electrodes modified with reduced graphene oxide and poly(allylamine hydrochloride)

2015

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“…Many methods have been developed for GO reduction, two of the main ones being thermal annealing and chemical reaction using reducing agents. However, thermal annealing is restricted for its high temperature required in the removal of oxygen functional groups, and most reducing agents, such as hydrazine, sodium borohydride, and hydroiodic acid are dangerous and harmful to operators and the environment [3,4]. In addition to thermal annealing and chemical reaction using reducing agents, some other methods have been investigated for GO reduction.…”

Section: Introductionmentioning

confidence: 99%

A new approach to simultaneously reducing, nitrogen doping and noble metal coating of graphene oxide via active-screen plasma

Jing¹,

Guo²,

Yu³

et al. 2022

Nanotechnology

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Graphene is widely used for various applications, especially after nitrogen doping and incorporation with metal nanoparticles. Herein, a simultaneous approach to reducing, nitrogen doping and noble metals coating of graphene oxide (GO) is reported using an advanced active-screen plasma (ASP) technique. With a noble metal plate added as an extra lid of active screen cage, the corresponding noble metal, mainly or fully in pure metal state, depending on the noble metal type, as well as a minority of Fe and Cr, is deposited on GO with simultaneous reduction and nitrogen doping. The ASP treated GO exhibits varying levels of improvement in electrical property depending on the type of noble metal nanoparticles hybridized with. Specifically, ASP treated GO incorporated with Pt or Au revealed 2-4 orders of magnitude of improvement in electrical property.

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Nanotechnological Applications in Food Packaging, Sensors and Bioactive Delivery Systems

Purkayastha

Manhar

2016

Sustainable Agriculture Reviews

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Application of reduced graphene oxide and carbon nanotube modified electrodes for measuring the enzymatic activity of alcohol dehydrogenase

Cited by 8 publications

References 26 publications

Electrochemical determination of NADH using screen printed carbon electrodes modified with reduced graphene oxide and poly(allylamine hydrochloride)

Electrochemical determination of NADH using screen printed carbon electrodes modified with reduced graphene oxide and poly(allylamine hydrochloride)

A new approach to simultaneously reducing, nitrogen doping and noble metal coating of graphene oxide via active-screen plasma

Nanotechnological Applications in Food Packaging, Sensors and Bioactive Delivery Systems

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