Electrocatalytic Nitrite Determination Using Iron Phthalocyanine Modified Gold Nanoparticles

Saeed, Ayman Ali; Singh, Balwinder; Abbas, Mohammed Nooredeen; Issa, Y. M.; Dempsey, Eithne

doi:10.1002/elan.201400563

Cited by 34 publications

(21 citation statements)

References 57 publications

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“…Such behavior suggests the adsorption/pre-concentration ability of the modified layers toward NaNO 2 . Poor current response in the case of GC is related to sluggish kinetics for nitrite oxidation as previously reported for this material [7,20]. Among the electrodes studied here, the GC/C 22 TMA-ASC showed the highest voltammetric peak.…”

Section: +supporting

confidence: 66%

“…Various redox mediators such as metalled phthalocyanines or porphyrazines were used to build nitrite sensitive modified electrodes. In particular, macrocycles bearing transition metal ions such as Co, Fe, and Ni in their cores and involving reversible redox transitions are considered to be suitable for nitrite determination [3,7,[18][19][20]. Recently, composites consisting of graphene nanoparticles and precious metal have also been given attention [6,9].…”

Section: Introductionmentioning

confidence: 99%

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Voltammetric sensor based on long alkyl chain tetraalkylammonium ionic liquids comprising ascorbate anion for determination of nitrite

et al. 2021

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An electrochemical sensor was fabricated utilizing ionic liquids possessing cations with long alkyl chains such as trimethyl octadecylammonium and behenyl trimethylammonium and ascorbate anion. The ionic liquids were drop-coated onto the electrode. Thin modifying layers were prepared. Cyclic voltammetric investigations revealed electrostatic interactions between the electrochemical probes and the modified surface, proving that a positive charge was established at the film surface. Hence, negatively charged species such as nitrite can be pre-concentrated on the surface of presented modified electrodes. The fabricated electrodes have been used as a voltammetric sensor for nitrite. Due to the electrostatic accumulation properties of long alkyl cation, the assay exhibits a remarkable improvement in the voltammetric response toward nitrite oxidation. The influence of pH on the electrode response was thoroughly investigated, and the mechanism of the electrode was established. The developed sensor showed a linear electrochemical response in the range 1.0–50 μM with a detection limit of 0.1 μM. The electrode revealed good storage stability, reproducibility, and anti-interference ability. The determination of nitrite performed in curing salts brought satisfactory results. Graphical abstract

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Section: +supporting

confidence: 66%

Section: Introductionmentioning

confidence: 99%

Voltammetric sensor based on long alkyl chain tetraalkylammonium ionic liquids comprising ascorbate anion for determination of nitrite

et al. 2021

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“…Functionalization of nanomaterials with phthalocyanines has also been widely used to prepare electrochemical sensors. The number of papers in this field is quite It has been demonstrated that the combination of MPcs with gold nanoparticles (AuNPs) can improve the catalytic properties of the electrodes [37][38][39][40]. Similarly, electrochemical sensors have been developed by combining phthalocyanines with carbon nanotubes on carbon electrodes [41][42][43][44].…”

Section: Improvement Of the Performance Through The Use Of Nanomaterials And Nanostructured Filmsmentioning

confidence: 99%

Improvement of electrocatalytic effect in voltammetric sensors based on phthalocyanines

Rodrı́guez-Méndez

Medina-Plaza

García-Hernández

et al. 2016

J. Porphyrins Phthalocyanines

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Voltammetric sensors based on phthalocyanines have been used to detect a variety of compounds. In this paper, the state of the art of sensors prepared using classical techniques will be revised. Then, new strategies to improve the performance of the sensors will be described using as example sensors chemically modified with lutetium bisphthalocyanine (LuPc[Formula: see text] dedicated to the detection of phenols of interest in the food industry. Classical LuPc2 carbon paste electrodes can detect phenols such as catechol, caffeic acid or pyrogallol with limits of detection in the range of 10[Formula: see text]–10[Formula: see text] M. The performance can be improved by using nanostructured Langmuir–Blodgett (LB) or Layer by Layer (LbL) films. The enhanced surface to volume ratio produce an increase in the sensitivity of the sensors. Limits of detection of 10[Formula: see text]–10[Formula: see text] M are attained, which are one order of magnitude lower than those obtained using conventional carbon paste electrodes. Moreover, these techniques can be used to co-immobilize two electrocatalytic materials in the same device. The limits of detection obtained in LB sensors combining LuPc2/AuNPs or LuPc2/CNT are further improved. Finally, the LB technique has been used to prepare biosensors where a phenol oxydase (such as tyrosinase or lacasse) is immobilized in a biomimetic environment that preserves the enzymatic activity. Moreover, LuPc2 can be co-immobilized with the enzyme in a lipidic film formed by arachidic acid (AA). LuPc2 can act as an electron mediator facilitating the electron transfer. These biomimetic sensors formed by LuPc2/AA/enzyme show Limits of detection of 10[Formula: see text] M and an enhanced selectivity.

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“…Metallophthalocyanine (MPc) have a high chemical and thermal stability, electrical and optical properties and rich coordination chemistry. With these properties, MPc ionophore become one of the most interesting materials in the fabrication of chemical sensors for the selective recognition and sensing of cations and anions . Cobaltphthalocyanine (CoPc) belongs to the class of MPcs which are widely studied and used in the literature, due to their interesting physico‐chemical and recognition properties .…”

Section: Introductionmentioning

confidence: 99%

Development of a Perchlorate Chemical Sensor Based on Magnetic Nanoparticles and Silicon Nitride Capacitive Transducer

et al. 2018

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We report in this work the development of a novel capacitance electrochemical sensors based on silicon nitride substrate (Si3N4) chemically modified with a structure of Cobalt phthalocyanine, C,C,C,C‐tetracarboxylic acid‐Polyacrylamide (Co(II)Pc‐PAA). This sensitive layer was tested with and without magnetic nanoparticles (MNP) for perchlorate (ClO4- ) detection. The developed chemical sensor with Si3N4/APTES‐MNP/Co(II)Pc‐PAA structure has shown a better performance when compared to the other structure based on Si3N4/Co(II)Pc‐PAA. Contact angle measurements (CAM) and atomic force microscopy (AFM) characterizations have been performed to characterize the functionalization of the chemical sensors surface. Under the optimized structure of the chemical sensor, electrochemical measurements were carried out using Mott‐Schottky analysis for ClO4- detection within the large range of 10−10 to 10−4 M with a very low detection limit of 2×10−10 M. The chemical sensor has demonstrated a high selectivity toward ClO4- when compared to other interfering anions such as Cl−, SO42−, and CO32−. The present capacitive chemical sensor is very promising for sensitive and rapid detection of ClO4- for environmental applications.

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Electrocatalytic Nitrite Determination Using Iron Phthalocyanine Modified Gold Nanoparticles

Cited by 34 publications

References 57 publications

Voltammetric sensor based on long alkyl chain tetraalkylammonium ionic liquids comprising ascorbate anion for determination of nitrite

Voltammetric sensor based on long alkyl chain tetraalkylammonium ionic liquids comprising ascorbate anion for determination of nitrite

Improvement of electrocatalytic effect in voltammetric sensors based on phthalocyanines

Development of a Perchlorate Chemical Sensor Based on Magnetic Nanoparticles and Silicon Nitride Capacitive Transducer

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