Screen printed electrodes provide micro-domain sites for fabricating disposable electro-catalytic ensembles

Choudhry, Nadeem A.; Kadara, Rashid O.; Jenkinson, Norman; Banks, Craig E.

doi:10.1016/j.elecom.2010.01.005

Cited by 16 publications

(10 citation statements)

References 25 publications

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“…Electrodeposition experiments.-Electrodeposition of metals can be used as an "indirect" tool to assess the "reactiveness" of an electrode surface by determining the morphology of the metal deposits employing electron or optical microscopy. 49,50 Homogeneous films or densely packed metal deposits can qualitatively indicate a high "reactiveness", while sparse deposition indicates low "reactiveness". However, the latter term does not necessarily describe the intrinsic kinetics of redox reactions but is strongly affected by factors such as electrode wettability (both with respect to the electrolyte as well as the deposited metal) and specific charge (as the metal cations prefer to form metallic nuclei near negatively charged moieties).…”

Section: Experiments Using Biomoleculesmentioning

confidence: 99%

Structure-Dependent Electrochemistry of Reduced Graphene Oxide Monolayers

Punckt

Pope

Liu

et al. 2016

J. Electrochem. Soc.

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While graphene and other carbonaceous nanomaterials have shown promise in a variety of electrochemical applications, measurement of their intrinsic performance is often confounded with effects related to the complexities due to diffusion in a porous medium. To bypass this limitation, we use effectively non-porous tiled monolayers of reduced graphene oxide as a model platform to study how rates of heterogeneous electron transfer evolve as a function of graphene structure/chemistry. A variety of electrochemical systems are investigated including the standard ferri/ferrocyanide redox probe, several common biomolecular redox systems as well as copper electrodeposition. We show that the rates of heterogeneous electron transfer can vary by as much as 3 orders of magnitude depending on the reduction or annealing conditions used and the redox system investigated. Performance changes are linked to graphene chemistry, and we show that the graphene oxide reduction procedure must be chosen judiciously to maximize the electrochemical performance for particular applications.

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Section: Experiments Using Biomoleculesmentioning

confidence: 99%

Structure-Dependent Electrochemistry of Reduced Graphene Oxide Monolayers

Punckt

Pope

Liu

et al. 2016

J. Electrochem. Soc.

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“…The nature of SPE development through layer by layer deposition of a conductive ink using a screen or mesh system on a solid substrate provides wide opportunity and flexibility of using different materials of choice based on the application of interest [ 226 ]. Moreover, the introduction of binders, mediators or any conductive components that modify the electrode surface such as polymers or electroactive metals could enhance the sensor efficiency by having better electron transfer kinetics compared to the unmodified electrode [ 233 , 234 ].…”

Section: Miniaturisation Of Electrochemical Biosensorsmentioning

confidence: 99%

Advancement in Salmonella Detection Methods: From Conventional to Electrochemical-Based Sensing Detection

et al. 2021

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Large-scale food-borne outbreaks caused by Salmonella are rarely seen nowadays, thanks to the advanced nature of the medical system. However, small, localised outbreaks in certain regions still exist and could possess a huge threat to the public health if eradication measure is not initiated. This review discusses the progress of Salmonella detection approaches covering their basic principles, characteristics, applications, and performances. Conventional Salmonella detection is usually performed using a culture-based method, which is time-consuming, labour intensive, and unsuitable for on-site testing and high-throughput analysis. To date, there are many detection methods with a unique detection system available for Salmonella detection utilising immunological-based techniques, molecular-based techniques, mass spectrometry, spectroscopy, optical phenotyping, and biosensor methods. The electrochemical biosensor has growing interest in Salmonella detection mainly due to its excellent sensitivity, rapidity, and portability. The use of a highly specific bioreceptor, such as aptamers, and the application of nanomaterials are contributing factors to these excellent characteristics. Furthermore, insight on the types of biorecognition elements, the principles of electrochemical transduction elements, and the miniaturisation potential of electrochemical biosensors are discussed.

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“…[28] Choudhry et al , have for the first time explored the fact that the electrode morphology can be changed dramatically by varying the concentration of the polymeric binder [29]. The same group has demonstrated that a bespoke screen printed electrode can be modified with electro-active palladium for the electrochemical oxidation of hydrazine where the unmodified electrode exhibited slow electron transfer [30]. It has also been shown that non-linear diffusion over an electrode surface may affect the individual contributions of edge and basal plane materials, affecting the relative area of the electrode surfaces [31].…”

Section: Dynamics Of Screen Printed Electrochemical Sensorsmentioning

confidence: 99%

Disposable Screen Printed Electrochemical Sensors: Tools for Environmental Monitoring

Hayat

Marty

2014

Sensors

361

160

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Screen printing technology is a widely used technique for the fabrication of electrochemical sensors. This methodology is likely to underpin the progressive drive towards miniaturized, sensitive and portable devices, and has already established its route from “lab-to-market” for a plethora of sensors. The application of these sensors for analysis of environmental samples has been the major focus of research in this field. As a consequence, this work will focus on recent important advances in the design and fabrication of disposable screen printed sensors for the electrochemical detection of environmental contaminants. Special emphasis is given on sensor fabrication methodology, operating details and performance characteristics for environmental applications.

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Screen printed electrodes provide micro-domain sites for fabricating disposable electro-catalytic ensembles

Cited by 16 publications

References 25 publications

Structure-Dependent Electrochemistry of Reduced Graphene Oxide Monolayers

Structure-Dependent Electrochemistry of Reduced Graphene Oxide Monolayers

Advancement in Salmonella Detection Methods: From Conventional to Electrochemical-Based Sensing Detection

Disposable Screen Printed Electrochemical Sensors: Tools for Environmental Monitoring

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