A New Sensor for Ammonia Determination Based on Polypyrrole Films Doped with Dodecylbenzenesulfonate (DBSA) Ions

Dall’Antônia, Luiz Henrique; Vidotti, Marcio; Torresi, Susana I. Córdoba de; Torresi, Roberto Manuel

doi:10.1002/1521-4109(200211)14:22<1577::aid-elan1577>3.0.co;2-y

Cited by 47 publications

(21 citation statements)

References 22 publications

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“…In addition, the treatment and purification processes are expensive, therefore reducing the biosensor commercial availability. In order to overcome these limitations, inorganic or organic matrices such as conducting polymers, coordination molecules or metal oxides, demonstrating catalytic activity become suitable for the development of sensors by means of creating modified electrodes [9][10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Nickel hydroxide electrodes as amperometric detectors for carbohydrates in flow injection analysis and liquid chromatography

Vidotti

Cerri

Carvalhal

et al. 2009

Journal of Electroanalytical Chemistry

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Section: Introductionmentioning

confidence: 99%

Nickel hydroxide electrodes as amperometric detectors for carbohydrates in flow injection analysis and liquid chromatography

Vidotti

Cerri

Carvalhal

et al. 2009

Journal of Electroanalytical Chemistry

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“…This is a simply methodology used in order to get the very same amount of PPy in all measurements. It is well known in literature that the polymerization of PPy is followed by the insertion of anionic species through the material in order to balance the positively charged polymer [16]. By this way, the PPy layer was formed in the presence of [Fe(CN) 6 ] 3-which is incorporated in the polymeric matrix, acting as a seed for the growth of PB particles, when in the presence of cations Fe 3+ within the PPy film.…”

Section: Electrochemical Polymerization Of Ppy and Formation Of Pb-ppymentioning

confidence: 99%

Electrocatalytic reduction of hydrogen peroxide performed by poly(pyrrole) / Prussian blue composites

Soek¹,

Schmidt²,

Hostert³

et al. 2014

Proceedings of the 1st International Seminar on Industrial Innovation in Electrochemistry

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The present work describes the electrochemical and electrocatalytic effect showed by poly(pyrrole) / Prussian blue composites. The material was synthesized onto platinum surface in a rapid and straightforward methodology based on the electrodeposition of poly(pyrrole) in a presence of Fe(CN) 6 3-ions. The modified electrode showed the electrocatalytical reduction of H 2 O 2 and a remarkable durability if compared with pure PB electrodes showing that the presence of the conducting polymer leads to an increment of the inorganic stability.

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“…However, detecting ammonia in solution is environmentally and clinically relevant, because this chemical compound is produced in a large amount by industries to be used as fertilizer and pesticide, and because it is an indicator of kidney disorder or bacterial infection in humans [5,6]. For that reason, many authors have put their efforts on the development of polypyrrole-based sensors for determination of ammonia in solution [7][8][9]. Detection mechanisms involved in ammonia sensing by polypyrrole, either in gas phase or in solution, have been well elucidated in the literature [1,10], and include reversible and irreversible changes of the electronic properties of polypyrrole, a p-type semiconductor [11], upon treatment with ammonia.…”

Section: Introductionmentioning

confidence: 99%

Evaluating the performance of polypyrrole nanowires on the electrochemical sensing of ammonia in solution

Massafera

Torresi

2012

Journal of Electroanalytical Chemistry

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a b s t r a c tThis work encompasses the direct electrodeposition of polypyrrole nanowires onto Au substrates using different electrochemical techniques: normal pulse voltammetry (NPV) and constant potential method with the aim in applying these films for the first time in ammonia sensing in solution. The performance of these nanowire-based sensors are compared and evaluated in terms of: film morphology (analyzed with scanning electron microscopy); their sensitivity towards ammonia; electrochemical and contact angle measurements. For nanowires prepared by NPV, the sensitivity towards ammonia increases with increasing amount of electrodeposited polypyrrole, as expected due to the role of polypyrrole as electrochemical transducer for ammonia oxidation. On the other hand, nanowires prepared potentiostatically displayed an unexpected opposite behavior, attributed to the lower conductivity of longer polypyrrole nanowires obtained through this technique. These results evidenced that the analytical and physico-chemical features of nanostructured sensors can differ greatly from those of their conventional bulky analogous.

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A New Sensor for Ammonia Determination Based on Polypyrrole Films Doped with Dodecylbenzenesulfonate (DBSA) Ions

Cited by 47 publications

References 22 publications

Nickel hydroxide electrodes as amperometric detectors for carbohydrates in flow injection analysis and liquid chromatography

Nickel hydroxide electrodes as amperometric detectors for carbohydrates in flow injection analysis and liquid chromatography

Electrocatalytic reduction of hydrogen peroxide performed by poly(pyrrole) / Prussian blue composites

Evaluating the performance of polypyrrole nanowires on the electrochemical sensing of ammonia in solution

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