Titanium dioxide nanotube arrays modified with a nanocomposite of silver nanoparticles and reduced graphene oxide for electrochemical sensing

Wang, Wei; Xie, Yibing; Chi, Xia; Du, Hongxiu; Tian, Fang

doi:10.1007/s00604-014-1258-x

Cited by 47 publications

(24 citation statements)

References 35 publications

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“…5B, it is observed that the RGO/AgNDs composite responded to H 2 O 2 sensitively and rapidly, which is explained as follows. 49 Clearly, the superiority of our RGO/AgNDs composite is response to H 2 O 2 , sensitively. On the other hand, the presence of the RGO with excellent electrical conductivity promoted the electron transfer of electrode surface.…”

Section: Electrochemical Sensor For H 2 Omentioning

confidence: 92%

Electrochemical synthesis and photoelectrochemical properties of a novel RGO/AgNDs composite

Zhang

Wang

et al. 2015

RSC Adv.

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A novel composite of Ag nanodendrites (AgNDs) wrapped with reduced graphene oxide (RGO) was prepared via a one-step electrodeposition approach. The characterization results show that three dimensional (3D) AgNDs with cubic phase are enwrapped by RGO sheets in the as-prepared RGO/ AgNDs composite. Due to the synergistic effect of AgNDs and RGO, the RGO/AgNDs composite exhibited excellent photoelectrical conversion. Furthermore, due to its good electrochemical response to H 2 O 2 , an electrode modified with the RGO/AgNDs composite was used as a sensor for H 2 O 2 detection, and the results show that the linear detection range is from 0.08 mM to 2.65 mM.

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Section: Electrochemical Sensor For H 2 Omentioning

confidence: 92%

Electrochemical synthesis and photoelectrochemical properties of a novel RGO/AgNDs composite

Zhang

Wang

et al. 2015

RSC Adv.

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“…An amperometric nanocomposite biosensor based on TiO 2 nanotube arrays modified with AgNPs exhibited a satisfactory response toward glucose sensing with a high sensitivity of 1151.98 μA mM −1 cm −2 and a wide linear range of 50–15.5 mM [52]. …”

Section: The Functions Of Mnps In Various Biosensor Typesmentioning

confidence: 99%

Noble metal nanoparticles in biosensors: recent studies and applications

Malekzad

Zangabad

Mirshekari

et al. 2017

Nanotechnology Reviews

273

119

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The aim of this review is to cover advances in noble metal nanoparticle (MNP)-based biosensors and to outline the principles and main functions of MNPs in different classes of biosensors according to the transduction methods employed. The important biorecognition elements are enzymes, antibodies, aptamers, DNA sequences, and whole cells. The main readouts are electrochemical (amperometric and voltametric), optical (surface plasmon resonance, colorimetric, chemiluminescence, photoelectrochemical, etc.) and piezoelectric. MNPs have received attention for applications in biosensing due to their fascinating properties. These properties include a large surface area that enhances biorecognizers and receptor immobilization, good ability for reaction catalysis and electron transfer, and good biocompatibility. MNPs can be used alone and in combination with other classes of nanostructures. MNP-based sensors can lead to significant signal amplification, higher sensitivity, and great improvements in the detection and quantification of biomolecules and different ions. Some recent examples of biomolecular sensors using MNPs are given, and the effects of structure, shape, and other physical properties of noble MNPs and nanohybrids in biosensor performance are discussed.

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“…Previous work proved that unhybridized TiO 2 NTA could be used as an electrode supporting material for the construction of glucose biosensors . Other glucose biosensors based on modified TiO 2 NTA have also been reported . However, the low electrical conductivity of TiO 2 semiconductor inhibited its biosensing application.…”

Section: Introductionmentioning

confidence: 99%

Bioelectrocatalytic performance of glucose oxidase/nitrogen-doped titania nanotube array enzyme electrode

Xie

Wang

2015

J. Chem. Technol. Biotechnol.

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BACKGROUND The substrate materials of enzyme electrodes strongly affect bioelectrocatalytic activity. TiO2 nanotube arrays (NTAs) show good affinity to glucose oxidase (GOx) but low conductivity. TiN NTAs show good conductivity but low affinity to GOx. Nitrogen‐doped TiO2 (N‐TiO2) NTA with good hydrophilicity and conductivity was designed to prepare a GOx/N‐TiO2 NTA enzyme electrode to promote bioelectrocatalytic performance. RESULTS N‐TiO2 NTA had a well‐ordered nanoarray structure with slightly distorted pore mouth and wrinkled nanotube wall. N‐TiO2 NTA exhibited decreased charge transfer resistance and similar contact angle to TiO2 NTA, presenting high electrical conductivity and good hydrophilicity. GOx/N‐TiO2 NTA exhibited highly increased current response at a potential of −0.45 V, presenting good bioelectrocatalysis towards glucose. A GOx/N‐TiO2 NTA enzyme electrode was used to fabricate a glucose biosensor, showing a high sensitivity of 733.17 µA mM−1 cm−2 and a linear range of 0.05–0.85 mmol L−1 and low detection limit of 2.9 µmol L−1 for glucose determination. It exhibited high selectivity in the presence of common interfering substances and was used to determine glucose in serum. It also had good reproducibility and long‐time storage stability. In addition, the GOx/N‐TiO2 NTA enzyme electrode was used to fabricate a glucose fuel cell, showing maximum power density of 23.92 µW cm−2 as well as good bioelectrocatalytic stability. CONCLUSION High bioelectrocatalytic activity and stability of GOx/N‐TiO2 NTA proved that N‐TiO2 NTA could act as a reasonable supporting substrate material for enzyme electrodes for various bioelectrocatalytic applications. © 2015 Society of Chemical Industry

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Titanium dioxide nanotube arrays modified with a nanocomposite of silver nanoparticles and reduced graphene oxide for electrochemical sensing

Cited by 47 publications

References 35 publications

Electrochemical synthesis and photoelectrochemical properties of a novel RGO/AgNDs composite

Electrochemical synthesis and photoelectrochemical properties of a novel RGO/AgNDs composite

Noble metal nanoparticles in biosensors: recent studies and applications

Bioelectrocatalytic performance of glucose oxidase/nitrogen-doped titania nanotube array enzyme electrode

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