Recent developments in nanotechnology-based printing electrode systems for electrochemical sensors

Ambaye, Abera Demeke; Kefeni, Kebede K.; Mishra, Shivani B.; Nxumalo, Edward N.; Ntsendwana, Bulelwa

doi:10.1016/j.talanta.2020.121951

Cited by 80 publications

(30 citation statements)

References 151 publications

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“…The D values obtained for the CGA with SPEs are comparable with those obtained with other carbon-based sensors reported in the literature [32,33]. Metallic nanomaterials, particularly gold nanoparticles, have the capacity to facilitate the transfer of electrons due to their excellent conductivity [34,36], having a large surface-to-volume ratio and a very good biological compatibility [36]. To confirm that the oxidation of CGA is a process controlled by diffusion (according to the Randles-Sevcik equation), the kinetics of the peaks, depending on the square root of the scanning rate, was graphically represented.…”

Section: Electrochemical Responses Of Sensors In Cga Solutionsupporting

confidence: 86%

Section: Electrochemical Responses Of Sensors In Cga Solutionsupporting

confidence: 83%

“…Nanoparticle-based technologies have contributed to the development of a new generation of detection tools. Taking into account their distinct optical, chemical, electrical, and catalytic properties, GNPs have been extensively studied for biological and chemical detection and also for analytical applications [34].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Electrochemical Determination of Chlorogenic Acid in Nutraceuticals Using Voltammetric Sensors Based on Screen-Printed Carbon Electrode Modified with Graphene and Gold Nanoparticles

Munteanu

Apetrei

2021

IJMS

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The present study describes the electrochemical properties of three screen-printed electrodes (SPEs), the first electrode being carbon-based (C), the second graphene-based (GPH), and the third based on GPH modified with gold nanoparticles (GNP). These electrodes were used for the study of the electrochemical behavior of chlorogenic acid in different aqueous solutions, at pH = 7. In chlorogenic acid solution, a redox process was noticed in the case of all three electrodes; GPH and GNP significantly improved the sensor response regarding sensitivity and reversibility, a fact demonstrated by characterizing the sensor by cyclic voltammetry in potassium ferrocyanide, which corresponds to the exchange of two electrons and two protons. Moreover, the calibration curves for each sensor were developed, subsequently calculating the detection limits (LOD) and the quantification limits (LOQ). Low LOD and LOQ were obtained, the best—of the order of 10−7 M (LOD = 0.62 × 10−7 M; LOQ = 1.97 × 10−7 M)—being obtained in the case of GPH-GNP-SPE, which demonstrates that the method may be applied for determining chlorogenic acid in real samples. Thus, the sensors were successfully used for the quantitative determination of chlorogenic acid in three nutraceutical products. The validation of the results was done using the FTIR method. The results obtained by cyclic voltammetry were in accordance with those obtained by the spectrometric method, without significant differences from a statistical point of view.

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Section: Electrochemical Responses Of Sensors In Cga Solutionsupporting

confidence: 86%

Section: Electrochemical Responses Of Sensors In Cga Solutionsupporting

confidence: 83%

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Electrochemical Determination of Chlorogenic Acid in Nutraceuticals Using Voltammetric Sensors Based on Screen-Printed Carbon Electrode Modified with Graphene and Gold Nanoparticles

Munteanu

Apetrei

2021

IJMS

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“…with different morphology (nanowires, nanosheets, nanofibers, nanoflakes, nanotubes, nanorods, core-shell) [ 114 , 115 ]. They can act as electrocatalyst (bimetallic and trimetallic NPs have synergic effect), but also are widely used as electrode modifiers with bioanalytical applications [ 116 , 117 , 118 , 119 , 120 , 121 ]. A special attention is paid to TiO 2 nanomaterials due to some advantages: Ti is a biocompatible and abundant material, TiO 2 nanomaterials are chemically stable, mechanically strong, highly uniform, having large surface area, with photo-catalytic properties and multi-functionalities, therefore TiO 2 is often used as a supported material for decoration with other metal NPs with many biomedical applications [ 17 , 122 , 123 , 124 ].…”

Section: Metal Nanoparticlesmentioning

confidence: 99%

Metal Nanoparticles and Carbon-Based Nanomaterials for Improved Performances of Electrochemical (Bio)Sensors with Biomedical Applications

et al. 2021

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Monitoring human health for early detection of disease conditions or health disorders is of major clinical importance for maintaining a healthy life. Sensors are small devices employed for qualitative and quantitative determination of various analytes by monitoring their properties using a certain transduction method. A “real-time” biosensor includes a biological recognition receptor (such as an antibody, enzyme, nucleic acid or whole cell) and a transducer to convert the biological binding event to a detectable signal, which is read out indicating both the presence and concentration of the analyte molecule. A wide range of specific analytes with biomedical significance at ultralow concentration can be sensitively detected. In nano(bio)sensors, nanoparticles (NPs) are incorporated into the (bio)sensor design by attachment to the suitably modified platforms. For this purpose, metal nanoparticles have many advantageous properties making them useful in the transducer component of the (bio)sensors. Gold, silver and platinum NPs have been the most popular ones, each form of these metallic NPs exhibiting special surface and interface features, which significantly improve the biocompatibility and transduction of the (bio)sensor compared to the same process in the absence of these NPs. This comprehensive review is focused on the main types of NPs used for electrochemical (bio)sensors design, especially screen-printed electrodes, with their specific medical application due to their improved analytical performances and miniaturized form. Other advantages such as supporting real-time decision and rapid manipulation are pointed out. A special attention is paid to carbon-based nanomaterials (especially carbon nanotubes and graphene), used by themselves or decorated with metal nanoparticles, with excellent features such as high surface area, excellent conductivity, effective catalytic properties and biocompatibility, which confer to these hybrid nanocomposites a wide biomedical applicability.

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“…(iii) Electrochemical biosensors, as suggested by the name, convert the electroactive analytes into a quantifiable electrical signal through three comprising bio-recognition elements: analyte, transducer, and instrumentation. After recognition of the specific analyte, the electrode, acting as a transducer, detects the generation of ions during the chemical reactions and converts them into electrical current or voltage [10][11][12]. In simple words, in the case of optical biosensors, photon measurements of the analytes are collected, while in the case of electrochemical biosensors, electron measurements are collected instead.…”

Section: Introductionmentioning

confidence: 99%

Inkjet Printing: A Viable Technology for Biosensor Fabrication

2022

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Printing technology promises a viable solution for the low-cost, rapid, flexible, and mass fabrication of biosensors. Among the vast number of printing techniques, screen printing and inkjet printing have been widely adopted for the fabrication of biosensors. Screen printing provides ease of operation and rapid processing; however, it is bound by the effects of viscous inks, high material waste, and the requirement for masks, to name a few. Inkjet printing, on the other hand, is well suited for mass fabrication that takes advantage of computer-aided design software for pattern modifications. Furthermore, being drop-on-demand, it prevents precious material waste and offers high-resolution patterning. To exploit the features of inkjet printing technology, scientists have been keen to use it for the development of biosensors since 1988. A vast number of fully and partially inkjet-printed biosensors have been developed ever since. This study presents a short introduction on the printing technology used for biosensor fabrication in general, and a brief review of the recent reports related to virus, enzymatic, and non-enzymatic biosensor fabrication, via inkjet printing technology in particular.

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Recent developments in nanotechnology-based printing electrode systems for electrochemical sensors

Cited by 80 publications

References 151 publications

Electrochemical Determination of Chlorogenic Acid in Nutraceuticals Using Voltammetric Sensors Based on Screen-Printed Carbon Electrode Modified with Graphene and Gold Nanoparticles

Electrochemical Determination of Chlorogenic Acid in Nutraceuticals Using Voltammetric Sensors Based on Screen-Printed Carbon Electrode Modified with Graphene and Gold Nanoparticles

Metal Nanoparticles and Carbon-Based Nanomaterials for Improved Performances of Electrochemical (Bio)Sensors with Biomedical Applications

Inkjet Printing: A Viable Technology for Biosensor Fabrication

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