Facile and versatile approaches to enhancing electrochemical performance of screen printed electrodes

Washe, Alemayehu P.; Lozano-Sánchez, Pablo; Bejarano-Nosas, Diego; Katakis, Ioanis

doi:10.1016/j.electacta.2012.12.110

Cited by 49 publications

(46 citation statements)

References 33 publications

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“…31 Treatment of SPCEs with N,N-dimethylformamide was reported to increase the electroactive surface area to 57-fold over the geometric area based on measurements with Fe(CN) 6 3−/4− . 26 However, this drastic improvement was challenged based on more modest improvements (≤ 1.38-fold) found for the responses of similarly treated SPCEs toward Ru(NH 3 ) 6 3+/2+ , capsaicin, and dihydronicotinamide adenine dinucleotide. 45 In studies reported here, PDDA-modified SPCEs exhibited voltammetric peak currents that were comparable to those obtained with AuNP/PDDA-modified SPCEs using Fe(CN) 6 3− , FcMeOH, and Ru(NH 3 ) 6 3+ as redox probes.…”

Section: Discussionmentioning

confidence: 99%

“…Indeed, E p for the Ru(NH 3 ) 6 3+/2+ redox couple with SPCEs prepared from custom-formulated inks was found to depend on the ratio of poly(vinyl chloride) binder to conductive pyrolytic graphite particles, with inks that featured lower percentages of binder producing smaller E p . 30 Surface treatments, such as exposure to organic solvents 26,45 and mechanical polishing, 18,31 have also been found to affect E p for common redox couples. Peak currents for Fe(CN) 6 3−/4− increased by ∼8x for SPCEs after mechanical polishing using an agate lapping hammer.…”

Section: Discussionmentioning

confidence: 99%

“…21 While the electrochemical characteristics of SPCEs have been widely reported, many of these studies have relied on interpretation of SPCE response with the Fe(CN) 6 3−/4− redox couple. 13,17,18,25,26 Furthermore, the improvement in electroactive surface area previously reported for LbL construction of AuNP-modified SPCEs was based on differences between the CV responses of Fe(CN) 6 3−/4− on AuNPmodified and bare SPCEs. 17,19 Here, we investigate the electrochemical responses of Fe(CN) 6 3−/4− and other redox probes (Ru(NH 3 ) 6…”

Section: B24mentioning

confidence: 99%

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Use of Redox Probes for Characterization of Layer-by-Layer Gold Nanoparticle-Modified Screen-Printed Carbon Electrodes

Bishop

Ahiadu

Smith

et al. 2016

J. Electrochem. Soc.

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The electrochemical characteristics of bare and surface-modified screen-printed carbon electrodes (SPCEs) were compared using voltammetric responses of common redox probes to determine the potential role of nanomaterials in previously documented signal enhancement. SPCEs modified with gold nanoparticles (AuNPs) by layer-by-layer (LbL) electrostatic adsorption were previously reported to exhibit an increase in voltammetric signal for Fe(CN) 6 3−/4− that corresponds to an improvement of 102% in electroactive surface area over bare SPCEs. AuNP-modified SPCEs prepared by the same LbL strategy using the polycation poly(diallyldimethylammonium chloride) (PDDA) here were found to provide no beneficial increase in electroactive surface area over bare SPCEs. Though similar improvement in voltammetric signal of Fe(CN) 6 3−/4− was found for AuNP/PDDA-modified compared to bare SPCEs in these studies, results with other redox couples ferrocene methanol (FcMeOH/FcMeOH + ) and Ru(NH 3 ) 6 3+/2+ indicated no difference between the electroactive surface areas of modified and bare SPCEs. Furthermore, gold present on AuNP/PDDAmodified SPCEs accounted for only 62 (±12)% of the electroactive surface area. The previously reported improvement in electroactive surface area that was attributed to the inclusion of AuNPs on the SPCE surface appears to have resulted from a misinterpretation of the non-ideal behavior of Fe(CN) 63− as a redox probe for bare SPCEs.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: B24mentioning

confidence: 99%

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Use of Redox Probes for Characterization of Layer-by-Layer Gold Nanoparticle-Modified Screen-Printed Carbon Electrodes

Bishop

Ahiadu

Smith

et al. 2016

J. Electrochem. Soc.

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“…Fabrication of SPEs often follows a similar concept in which the functional electrodes are made using hard and heat-resistive substrates such as certain plastics and ceramics and the electrode components are created by printing different inks in successive layers to create the fi nished product. A fi nal curing process is often necessary to anneal the layers of ink together with the underlying substrate for better stability of the electrode (Washe et al 2013 ).…”

Section: Introductionmentioning

confidence: 99%

Carbon Nanotubes: Advances, Integration and Applications to Printable Electrode-Based Biosensors

Hung

Kerman

2015

Nanobiosensors and Nanobioanalyses

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The development of novel analytical techniques for biosensor application has been an area of intense research efforts in the past decade and, in a fi eld where the demand for rapid and cost-effective analyses is high, the use of screen-printed electrodes as opposed to conventional macroelectrodes can effectively satisfy these demands. With advancements in nanotechnology, the use of nanomaterials in biosensors has also added another level of customizability and sensitivity. In this chapter, we described the use of carbon nanotubes in printable electrode-based biosensors for label-free detection approaches for the detection of environmental contaminants and biologically relevant substrates. A discussion of past developments and recent advancements will highlight the broad range of experimental designs suitable for biosensing applications. With continual innovation in this fi eld, it is expected that screen-printing technology will come to the fore in biosensing technology and progress successfully to overcome fundamental challenges in the biosensor fi eld.

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“…Reference, working and counter electrodes have given SPE an unrivaled power of adaptability and excellent accuracy [14,15]. Furthermore, SPEs have garnered much interest because of the attractive features of carbon: chemically inert, low background currents and wide potential window [14]. Besides carbon, which remains top choice in terms of cost, other metals such as gold have their own advantages.…”

Section: Introductionmentioning

confidence: 99%

Printable Electrochemical Biosensors: A Focus on Screen-Printed Electrodes and Their Application

Yamanaka

Vestergaard

Tamiya

2016

Sensors

148

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In this review we present electrochemical biosensor developments, focusing on screen-printed electrodes (SPEs) and their applications. In particular, we discuss how SPEs enable simple integration, and the portability needed for on-field applications. First, we briefly discuss the general concept of biosensors and quickly move on to electrochemical biosensors. Drawing from research undertaken in this area, we cover the development of electrochemical DNA biosensors in great detail. Through specific examples, we describe the fabrication and surface modification of printed electrodes for sensitive and selective detection of targeted DNA sequences, as well as integration with reverse transcription-polymerase chain reaction (RT-PCR). For a more rounded approach, we also touch on electrochemical immunosensors and enzyme-based biosensors. Last, we present some electrochemical devices specifically developed for use with SPEs, including USB-powered compact mini potentiostat. The coupling demonstrates the practical use of printable electrode technologies for application at point-of-use. Although tremendous advances have indeed been made in this area, a few challenges remain. One of the main challenges is application of these technologies for on-field analysis, which involves complicated sample matrices.

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Facile and versatile approaches to enhancing electrochemical performance of screen printed electrodes

Cited by 49 publications

References 33 publications

Use of Redox Probes for Characterization of Layer-by-Layer Gold Nanoparticle-Modified Screen-Printed Carbon Electrodes

Use of Redox Probes for Characterization of Layer-by-Layer Gold Nanoparticle-Modified Screen-Printed Carbon Electrodes

Carbon Nanotubes: Advances, Integration and Applications to Printable Electrode-Based Biosensors

Printable Electrochemical Biosensors: A Focus on Screen-Printed Electrodes and Their Application

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