Gold Nanoparticle/Chitosan@N,S Co-doped Multiwalled Carbon Nanotubes Sensor: Fabrication, Characterization, and Electrochemical Detection of Catechol and Nitrite

Rao, Hanbing; Liu, Yiting; Zhong, Jianxin; Zhang, Zhaoyi; Zhao, Xun; Liu, Xin; Jiang, Yuanyuan; Zou, Ping; Wang, Xianxiang; Wang, Yanying

doi:10.1021/acssuschemeng.7b02840

Cited by 101 publications

(40 citation statements)

References 90 publications

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“…Studies show that the catalytic activity of AuNPs arises from their quantum scale, high surface-to-volume ratio and interface-dominated property, which is able to reduce the overpotential of electrochemical reactions and accelerate the chemical reaction, leading to the improvement of detection sensitivity. Typically, AuNPs are used to catalyze redox reactions such as nicotinamide adenine dinucleotide (NADH), hydrogen peroxide (H 2 O 2 ), 4-nitrophenol, o-phenylenediamine (o-PD), catechol and nitrite [118,119,120].…”

Section: Electrochemical Biosensorsmentioning

confidence: 99%

Applications of Gold Nanoparticles in Non-Optical Biosensors

et al. 2018

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Due to their unique properties, such as good biocompatibility, excellent conductivity, effective catalysis, high density, and high surface-to-volume ratio, gold nanoparticles (AuNPs) are widely used in the field of bioassay. Mainly, AuNPs used in optical biosensors have been described in some reviews. In this review, we highlight recent advances in AuNP-based non-optical bioassays, including piezoelectric biosensor, electrochemical biosensor, and inductively coupled plasma mass spectrometry (ICP-MS) bio-detection. Some representative examples are presented to illustrate the effect of AuNPs in non-optical bioassay and the mechanisms of AuNPs in improving detection performances are described. Finally, the review summarizes the future prospects of AuNPs in non-optical biosensors.

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Section: Electrochemical Biosensorsmentioning

confidence: 99%

Applications of Gold Nanoparticles in Non-Optical Biosensors

et al. 2018

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“…Moreover, the ∆Ep value between anodic and cathodic peaks decreases when the concentration of MWCNT/AuNP increases, showing higher reversibility. However, for 40% of MWCNT/AuNP, two anodic peaks were observed, which was the key point to select this concentration for further experiments, the peak at 345 mV can be attributed to gold oxidation [27].…”

Section: Optimization Of Mwcnt/aunp Concentrationmentioning

confidence: 99%

Voltammetric Sensor Based on Molecularly Imprinted Chitosan-Carbon Nanotubes Decorated with Gold Nanoparticles Nanocomposite Deposited on Boron-Doped Diamond Electrodes for Catechol Detection

et al. 2020

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Phenolic compounds such as catechol are present in a wide variety of foods and beverages; they are of great importance due to their antioxidant properties. This research presents the development of a sensitive and biocompatible molecular imprinted sensor for the electrochemical detection of catechol, based on natural biopolymer-electroactive nanocomposites. Gold nanoparticle (AuNP)-decorated multiwalled carbon nanotubes (MWCNT) have been encapsulated in a polymeric chitosan (CS) matrix. This chitosan nanocomposite has been used to develop a molecular imprinted polymers (MIP) in the presence of catechol on a boron-doped diamond (BDD) electrode. The structure of the decorated MWCNT has been studied by TEM, whereas the characterization of the sensor surface has been imaged by AFM, demonstrating the satisfactory adsorption of the film and the adequate coverage of the decorated carbon nanotubes on the electrode surface. The electrochemical response of the sensor has been analyzed by cyclic voltammetry (CV) where excellent reproducibility and repeatability to catechol detection in the range of 0 to 1 mM has been found, with a detection limit of 3.7 × 10−5 M. Finally, the developed sensor was used to detect catechol in a real wine sample.

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“…Catechol (CC) and Resorcinol (RC), two isomers of dihydroxybenzene, are easily introduced into environment owing to their extensive applications in cosmetics, pesticides, medicines, dyes, photography chemicals, flavoring agents . These two isomers are hazardous to the environment and human health due to difficult in degradation and high toxicity even at very low concentrations .…”

Section: Introductionmentioning

confidence: 97%

Graphene Paper with Sharp‐edged Nanorods of Fe−CuMOF as an Excellent Electrode for the Simultaneous Detection of Catechol and Resorcinol

Kıranşan

Topç̧u

2019

Electroanalysis

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A flexible composite paper Fe−Cu‐based metal‐organic framework (MOF)/reduced graphene oxide (rGO) (Fe−CuMOF/rGO) electrode was prepared by using a simple electrochemical method for the simultaneous detection of catechol (CC) and resorcinol (RC). Free‐standing, flexible and double‐sided Fe−CuMOF/rGO composite paper was obtained by applying the electrochemical deposition process on the rGO paper electrode in the solution containing Fe−CuMOF composite. The morphological analysis of Fe−CuMOF/rGO composite paper showed that sea urchin‐like structures formed on the rGO electrode surface consist of numerous sharp‐edged nanorods of Fe−CuMOF. Flexible Fe−CuMOF/rGO paper electrode exhibited high sensitivity, wide linear range and low detection limit for the simultaneous determination of CC and RC. The linear ranges of concentration for CC and RC were 0.1–800 and 0.1–720 μM, respectively, and the corresponding limits of detection (S/N=3) were 0.016 and 0.020 μM. The outstanding performance of this flexible electrode could be attributed to the sharp‐edged urchin‐like Fe−CuMOF structures which provide an increment of the surface area and the electrochemical activity of the composite paper electrode. Stability tests showed that Fe−CuMOF/rGO composite paper electrode has excellent flexibility, high durability, and good reproducibility. Furthermore, this electrode exhibited high sensitivity and selectivity for the determination of CC and RC in real sample analysis.

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Gold Nanoparticle/Chitosan@N,S Co-doped Multiwalled Carbon Nanotubes Sensor: Fabrication, Characterization, and Electrochemical Detection of Catechol and Nitrite

Cited by 101 publications

References 90 publications

Applications of Gold Nanoparticles in Non-Optical Biosensors

Applications of Gold Nanoparticles in Non-Optical Biosensors

Voltammetric Sensor Based on Molecularly Imprinted Chitosan-Carbon Nanotubes Decorated with Gold Nanoparticles Nanocomposite Deposited on Boron-Doped Diamond Electrodes for Catechol Detection

Graphene Paper with Sharp‐edged Nanorods of Fe−CuMOF as an Excellent Electrode for the Simultaneous Detection of Catechol and Resorcinol

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