Nanohybrid Materials as Transducer Surfaces for Electrochemical Sensing Applications

Neves, Marta M.P.S.; García, María Begoña González; Delerue–Matos, Cristina; Garcı́a, Agustı́n Costa

doi:10.1002/elan.201000427

Cited by 23 publications

(7 citation statements)

References 32 publications

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“…The LOD for the SPEs showed small variations (1.1 to 5.1×10 −11 M) concerning the electrodes nanostructured with the carbon nanostructures and NPAus. The hybrid transducers showed a better overall analytical performance, highlighting their lowest LOD in the order of 10 −12 M. The wider linear ranges (10 −12 to 10 −10 M) and lower LOD (6.1×10 −12 M) were found for the hybrid SPE‐MWCNT‐NPAus 13.…”

Section: Introductionmentioning

confidence: 90%

Sensitive Determination of Nitrofurantoin by Flow Injection Analysis Using Carbon Nanofiber Screen Printed Electrodes

et al. 2013

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In this work, a new method to quantify nitrofurantoin in aqueous media using a flow injection system connected to commercially available screen-printed carbon nanofibers was developed. A pretreatment of the screen-printed carbon nanofibers electrode with BrittonÀRobinson buffer/N,N-dimethylformamide was applied to enhance the nitrofurantoin peak current signal in one step. The developed method was demonstrated to be sensible, reproducible, easy, and inexpensive. With a low detection limit, it is applicable to real samples. The results indicate that it is highly applicable for the detection of nitrofurantoin in several matrices. When urine samples without any pretreatment were analyzed, the method proved reproducible and sensible and had a low detection limit. The use of screenprinted electrodes has advantages over other modified electrodes as a glassy carbon due to its versatility.

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Section: Introductionmentioning

confidence: 90%

Sensitive Determination of Nitrofurantoin by Flow Injection Analysis Using Carbon Nanofiber Screen Printed Electrodes

et al. 2013

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“…In this paper, we have carried out for the first time a systematic study of the optimization of the electrochemical properties of paper electrodes, modified by the addition of several nanomaterials: carbon nanofibers (CNFs), graphene oxide (GO), gold nanoparticles (AuNPs). Similar studies have been done before with conventional screen-printed electrodes [24][25]. It was expected that these modifications would improve the sensitivity of the electrochemical detection of the analytes, as compared to unmodified paper electrodes, obtaining a more conductive working electrode with advantages for the development of low cost sensors.…”

Section: Accepted Manuscriptmentioning

confidence: 78%

Optimization and characterization of nanostructured paper-based electrodes

Sánchez-Calvo

Núñez-Bajo

Fernández‐Abedul

et al. 2018

Electrochimica Acta

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Paper-based working electrodes were modified by the addition of nanomaterials (carbon nanofibers, gold nanoparticles, graphene and hybrids of them), with the aim to increase the conductivity and to obtain an electroactive platform with improved analytical behaviour. The effect of the nanostructures was evaluated by using cyclic voltammetry and dopamine as electrochemical probe. The modifications with in-situ generated nanomaterials such as gold nanoparticles (AuNPs) or others requiring treatment like graphene oxide (GO), were optimized by factorial design. The characterization of the cellulose based electrodes by scanning electron microscopy (SEM) showed the distribution of carbon nanofibers and the presence of AuNPs around the cellulose fibers. The partial modification made by the carbon ink was also monitored by attenuated total reflection (ATR) spectrometry. Electrodes modified with rGO and AuNPs exhibited higher intensity peaks with more reversibility and reproducibility than unmodified paper. The highest intensities and lowest limits of detection were achieved with paper electrodes modified with hybrid nanostructures composed by both CNFs and AuNPs.

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“…These biomolecules can be immobilized onto the surface of the working electrode employing a variety of immobilization strategies such as adsorption, covalent binding, entrapment, crosslinking or affinity binding . Great advancement has been achieved modifying SPEs with nanomaterials such as metal nanoparticles or carbon nanomaterials that improve the electrochemical behaviour of the SPEs and enhanced the immobilization efficiency of biological molecules . Moreover, the planar nature of the SPEs makes easy the modification of their surface and, through the help of an automatic dispenser, this can be done in a mass‐producible way .…”

Section: Screen‐printed Electrodesmentioning

confidence: 99%

Screen‐printed Electrochemical Immunosensors for the Detection of Cancer and Cardiovascular Biomarkers

Costa‐Rama

Costa-Garcı́a

2016

Electroanalysis

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1Introduction during the last years,S PEs have gone through significant improvements related to both their design and printing materials.S ince cancera nd cardiovascular diseases are the majort hreats of global health, there is ag rowing demand for the development of portable,r apid, simple and inexpensive devices for the detectiono ft hese diseases.T his article presents an overviewa bout the main biomarkers of cancer and cardiovascular diseases and the EIs based on SPEs for the detection of these biomarkers.

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Nanohybrid Materials as Transducer Surfaces for Electrochemical Sensing Applications

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Cited by 23 publications

References 32 publications

Sensitive Determination of Nitrofurantoin by Flow Injection Analysis Using Carbon Nanofiber Screen Printed Electrodes

Sensitive Determination of Nitrofurantoin by Flow Injection Analysis Using Carbon Nanofiber Screen Printed Electrodes

Optimization and characterization of nanostructured paper-based electrodes

Screen‐printed Electrochemical Immunosensors for the Detection of Cancer and Cardiovascular Biomarkers

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