Molecularly imprinted electrochemical sensor based on Au nanoparticles in carboxylated multi-walled carbon nanotubes for sensitive determination of olaquindox in food and feedstuffs

Wang, Hongwu; Shen, Yao; Liu, Yanqing; Wei, Shoulian; Su, Jianguang; Hu, Gengxin

doi:10.1016/j.bios.2016.08.092

Cited by 92 publications

(24 citation statements)

References 37 publications

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“…Wang and co-authors used a similar strategy, AuNPs and carboxylated MWCNT dropcasted on GC electrode, to produce a MIP sensor for olanquindox (OLA). The MIP was obtained by electropolymerization using OLA as a template and o-PD as monomer, as the novel sensor showed an LOD of 2.7 nmol/L [190]. …”

Section: Labelling Methodsmentioning

confidence: 99%

Imprinting Technology in Electrochemical Biomimetic Sensors

Frasco

Truta

Sales

et al. 2017

Sensors

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Biosensors are a promising tool offering the possibility of low cost and fast analytical screening in point-of-care diagnostics and for on-site detection in the field. Most biosensors in routine use ensure their selectivity/specificity by including natural receptors as biorecognition element. These materials are however too expensive and hard to obtain for every biochemical molecule of interest in environmental and clinical practice. Molecularly imprinted polymers have emerged through time as an alternative to natural antibodies in biosensors. In theory, these materials are stable and robust, presenting much higher capacity to resist to harsher conditions of pH, temperature, pressure or organic solvents. In addition, these synthetic materials are much cheaper than their natural counterparts while offering equivalent affinity and sensitivity in the molecular recognition of the target analyte. Imprinting technology and biosensors have met quite recently, relying mostly on electrochemical detection and enabling a direct reading of different analytes, while promoting significant advances in various fields of use. Thus, this review encompasses such developments and describes a general overview for building promising biomimetic materials as biorecognition elements in electrochemical sensors. It includes different molecular imprinting strategies such as the choice of polymer material, imprinting methodology and assembly on the transduction platform. Their interface with the most recent nanostructured supports acting as standard conductive materials within electrochemical biomimetic sensors is pointed out.

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Section: Labelling Methodsmentioning

confidence: 99%

Imprinting Technology in Electrochemical Biomimetic Sensors

Frasco

Truta

Sales

et al. 2017

Sensors

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“…Xu et al 18 reported a multiwalled carbon nanotube-modified glassy carbon electrode (GCE) to detect OLA with a detection limit of 0.26 mg mL ¹1 . Wang et al 19 synthesized a molecularly imprinted electrochemical sensor based on Au nanoparticles in carboxylated multiwalled carbon nanotubes for the sensitive determination of OLA at a detection limit of 2.7 nM. Furthermore, electrochemical sensing using carbon nanomaterial hybrids greatly attracted considerable attention due to their extraordinary high electrical conductivity, fascinating mechanical properties and excellent electrochemical stability.…”

Section: Introductionmentioning

confidence: 99%

One Step Synthesis of Covalent Connected Three-dimensional Graphene/Carbon Nanotube for Olaquindox Electrochemical Sensor

et al. 2019

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An electrochemical sensor based on a three-dimensional (3D) graphene/carbon nanotube (G/CNT) hybrid was developed for the sensitive detection of olaquindox (OLA). 3D G/CNT hybrid through covalent C-C bonding was fabricated by one-step synthesis using catalytic chemical vapor deposition. To construct the base of the sensor, a novel composite was fabricated by a functionalized 3D G/CNT with poly-(dimethy diallyl ammonium chloride) and Nafion via simple grind and ultrasonication dispersion methods. The electrochemical determination of OLA exhibited an oxidation peak at −0.685 V with a higher current response. Due to the effective surface area and active sites, a good linear relationship was observed between the OLA concentration and peak current over the range of 1.5 × 10 −6 -2.7 × 10 −3 mg mL −1 with a detection limit of 6.12 × 10 −8 mg mL −1 (3σ). The proposed electrochemical sensor was used to detect OLA in swine samples at a recovery ranging from 97.78% to 104.25%, which exhibits a broader prospect to supervise animal products and a high potential for food security applications.

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“…In the next step, the silver nanodendrites is directly synthesized on the surface of TCNQ/GCE using electrodeposition. Finally, the electropolymerization method ensures the rational use of resources by way of reducing the use of cross-linking agents, and coupling agents [36]. Therefore, it can improve the sensitivity of the electrochemical sensor and provide more deposit site for MIPs.…”

Section: Introductionmentioning

confidence: 99%

“…Thirdly, MIPs firmly gets attached on the surface of the electrode, thereby, protecting the modified layers from damage and having the possibility to be reuse. Finally, the electropolymerization method ensures the rational use of resources by way of reducing the use of cross-linking agents, and coupling agents [36].…”

Section: Introductionmentioning

confidence: 99%

A Novel Electrochemical Sensor Based on Silver Nanodendrites and Molecularly Imprinted Polymers for the Determination of Tetrabromobisphenol A in Water

Zhang

Wang³

et al. 2018

Electroanalysis

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A novel and facile electrochemical sensor based on three different modification layers was prepared to detect tetrabromobisphenol A (TBBPA). They included tetracyanoquinodimethane (TCNQ), silver nanodendrites (AgNDs) and molecularly imprinted polymers (MIPs). TCNQ− acts as inducer can be reacted with Ag+ to form Ag‐TCNQ fibers and then constructed the nanodendritic structures. The latter two modification layers were synthesized on electrode by‐ways of electrodeposition and electropolymerization respectively. AgNDs has excellent conductivity and large specific surface area, which has good potential to be used as a bridge between electrode and MIPs. It can considerably improve the sensitivity of the sensor and provide immense deposit sites to pyrrole. MIPs synthesized using electropolymerization can firmly get attach on electrode, thereby, providing polymers with stable imprinted cavities and having the possibility to be reused. Under optimum conditions, the concentration of TBBPA exhibited an excellent linear relationship between 5.0×10−9 and 1.0×10−5 mol L−1, with a limit of dectection of 2.54×10−10 mol L−1 (S/N=3). The reproducibility of the sensor was observed to be 3.42 % and was immune to analogues. Finally the sensor was successfully applied to actual water samples.

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Molecularly imprinted electrochemical sensor based on Au nanoparticles in carboxylated multi-walled carbon nanotubes for sensitive determination of olaquindox in food and feedstuffs

Cited by 92 publications

References 37 publications

Imprinting Technology in Electrochemical Biomimetic Sensors

Imprinting Technology in Electrochemical Biomimetic Sensors

One Step Synthesis of Covalent Connected Three-dimensional Graphene/Carbon Nanotube for Olaquindox Electrochemical Sensor

A Novel Electrochemical Sensor Based on Silver Nanodendrites and Molecularly Imprinted Polymers for the Determination of Tetrabromobisphenol A in Water

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