Potentiometric Sensors with Carbon Black Supporting Platinum Nanoparticles

Paczosa‐Bator, Beata; Cabaj, Leszek; Piech, Robert; Skupień, Krzysztof

doi:10.1021/ac402885y

Cited by 76 publications

(63 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Importantly, the unbiased selectivity coefficients of NH 4 + -and NO 3 --selective ISEs obtained with the separate solution method closely match those reported for other electrodes based on the solid contact (see Supporting information Table S1 and S2). 6,[58][59][60] This indicates that graphite can be successfully employed as a conductive substrate for the preparation of ISEs without having any significant influence on their potentiometric response characteristics. …”

Section: Potentiometric Response Of Ises Based On Graphite Substratementioning

confidence: 97%

Single strip solid contact ion selective electrodes on a pencil-drawn electrode substrate

et al. 2017

View full text Add to dashboard Cite

A simple and low-cost approach for the preparation of ion-selective electrodes (ISEs) is proposed as a favorable alternative to the traditional paper-based electrodes. This involved the application of graphite from a simple household pencil via mechanical abrasion onto a modified acetate sheet. The resulting electrodes exhibited excellent sensing properties towards all tested ions, including a wide dynamic response range, fast response time and satisfactory long-term stability. The same methodology was used to produce stable and functional reference electrodes. These electrodes were then combined with other graphite-based ISEs to yield single strip solid-contact electrodes for simultaneous detection of cations and anions in aqueous solutions. The described approach, which is analogous to simply drawing on paper, opens new avenues for the development of sensing devices using very cheap and easily accessible components.

show abstract

Section: Potentiometric Response Of Ises Based On Graphite Substratementioning

confidence: 97%

Single strip solid contact ion selective electrodes on a pencil-drawn electrode substrate

et al. 2017

View full text Add to dashboard Cite

show abstract

“…Although electrical parameters of electrodes with TTF or TTF(NO 3 ) have been improved, they are little worse than those obtained for sensors with an intermediate layer made of nanomaterials. 26,36 Table II. Comparison of the potentiometric selectivity coefficients of the proposed and other electrodes described in literature (where SD is standard deviation, n = 5).…”

Section: Reversibility Test-inmentioning

confidence: 99%

Improved Nitrate Sensing Using Solid Contact Ion Selective Electrodes Based on TTF and Its Radical Salt

Pięk

Piech

Paczosa‐Bator

2015

J. Electrochem. Soc.

Self Cite

View full text Add to dashboard Cite

The possibility of improving the selectivity of solid-state nitrate-selective electrodes by the application of the tetrathiafulvalene (TTF) or its nitrate salt (TTF(NO 3 )) as an intermediate layer between an electrical conductor and a polymeric membrane is demonstrated. The analytical performance of electrodes was investigated during potentiometric measurements. Fabricated sensors displayed a Nernstian slope (−58.85 mV/decade in the range from 10 −5.0 to 10 −1 M and −59.36 mV/decade in the range from 10 −6.0 to 10 −1 M for TTF− and TTF(NO 3 )−modified electrodes respectively), repeatable and reproducible standard potential and detection limit of 2.5 μM (0.16 mgL −1 ) and 0.63 μM (0.039 mgL −1 ) for TTF− and TTF(NO 3 )−based electrodes, respectively. The selectivity was considerably improved compared to a coated disc electrode or electrodes with intermediate layer based on carbon nanomaterials. Electrical parameters of the proposed sensors were tested by carried out current-reversal chronopotentiometry. In the case of electrodes with the use of TTF or TTF(NO 3 ) the potential drift decreases to 167 μVs −1 or 16.6 μVs −1 and the capacitance is 5.99 μF or 60.3 μF. The proposed sensors were successfully applied in analyzing nitrate concentration in water samples.Nitrates are widely used in the fabrication of fertilizers, drugs, explosives and many products, which significantly contributes to their high concentration in the sewage. 1 The contamination of surface and ground water by nitrate ions is a material problem around the world and their removal is important for two main reasons. This type of water pollution disturbs ecological balance and causes hazard to people health. Nitrates are a source of nitrogen for microbial protein synthesizing, nevertheless excess amount of these ions causes eutrophication in water bodies manifested through uncontrolled growth of algae.The natural level of nitrate in surface water is typically less than 1 mgL −1 due to dilution of surface runoff, plant uptake and denitrification processes. However nitrate pollution has generally increased over time as a result of intensive use of nitrogen fertilizers in agriculture. The maximum acceptable concentration for nitrate has been established at 10 mgL −1 , to be protective of the health. 2,3 Drinking water containing a high concentration of nitrates induces cancer or other health problems, such as the 'blue baby syndrome' in infants. 4 Therefore, it has been necessary to introduce selective, simple and reliable method that could be used for the monitoring the concentrations of nitrates.Several analytical methods for the nitrate determination have been reported including spectrophotometry with the detection limit of 0.031 mgL −1 and 40 μgL −1 , 5,6 chromatography with the detection limit of 0.001 mgL −1 and 0.01 mgL −1 , 7,8 capillary electrophoresis with the detection limit of 0.099 mgL −1 , 9 amperometry with the detection limit of 6.2 ngL −1 , 10 polarography 11 and voltammetry with the detection limit of 5.4 mgL −1 . 12 However, most of ...

show abstract

“…Currently solid contact ISEs are based on conducting polymers such as PEDOT: PSS and POT . Other constructions are based on molecular redox couples and other materials like gold , platinum and C60 …”

Section: Introductionmentioning

confidence: 99%

Simultaneous Determination of Na⁺, K⁺, Ca²⁺, Mg²⁺ and Cl⁻ in Unstimulated and Stimulated Human Saliva Using All Solid State Multisensor Platform

et al. 2017

View full text Add to dashboard Cite

Human saliva is one of the body fluids which collection method is relatively simple and non‐invasive. The article is dedicated to assess concentration (activity) of Na+, K+, Ca2+, Mg2+ and Cl− in fresh, unstimulated or stimulated human saliva samples using single solid contact ion‐selective electrodes with conventional reference electrode and self‐made multisensor platform (MP) equipped with ion‐selective membranes for Na+, K+, Ca2+, Mg2+ and Cl− and reference electrode made in solid state technology, based on dispersed KCl in the polymer. Both kind of electrodes, single ISE and miniaturized electrodes in multisensor platform (ISE‐MP) were made of glassy carbon. The electrode surfaces have been modified by conductive polymer (PEDOT) layer deposition; with the exception of Cl− electrode, in which conducting polymer was not applied. Potentiometric measurements were used to compare the changes of the ionic composition in various samples of saliva.

show abstract

Potentiometric Sensors with Carbon Black Supporting Platinum Nanoparticles

Cited by 76 publications

References 22 publications

Single strip solid contact ion selective electrodes on a pencil-drawn electrode substrate

Single strip solid contact ion selective electrodes on a pencil-drawn electrode substrate

Improved Nitrate Sensing Using Solid Contact Ion Selective Electrodes Based on TTF and Its Radical Salt

Simultaneous Determination of Na⁺, K⁺, Ca²⁺, Mg²⁺ and Cl⁻ in Unstimulated and Stimulated Human Saliva Using All Solid State Multisensor Platform

Contact Info

Product

Resources

About

Potentiometric Sensors with Carbon Black Supporting Platinum Nanoparticles

Cited by 76 publications

References 22 publications

Single strip solid contact ion selective electrodes on a pencil-drawn electrode substrate

Single strip solid contact ion selective electrodes on a pencil-drawn electrode substrate

Improved Nitrate Sensing Using Solid Contact Ion Selective Electrodes Based on TTF and Its Radical Salt

Simultaneous Determination of Na+, K+, Ca2+, Mg2+ and Cl− in Unstimulated and Stimulated Human Saliva Using All Solid State Multisensor Platform

Contact Info

Product

Resources

About

Simultaneous Determination of Na⁺, K⁺, Ca²⁺, Mg²⁺ and Cl⁻ in Unstimulated and Stimulated Human Saliva Using All Solid State Multisensor Platform