Electrochemically induced regioregularity of the binding sites of a polyaniline membrane as a powerful approach to produce selective recognition sites for silver ion

Hashemi, Farzaneh; Zanganeh, Ali Reza

doi:10.1016/j.jelechem.2016.02.008

Cited by 8 publications

(3 citation statements)

References 58 publications

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“…Figure 5B shows the effect of times of cyclic voltammetry scanning for p-Tyr/GC preparation. The polymer membrane thickness or compactness is significantly influenced by the number of scan cycles [42]. More cycles increase the polymer film thickness and result in more Cd 2 + ion coordination centers, which is beneficial to the enrichment of Bi 3 + and Cd 2 + ions to be measured.…”

Section: Optimization Of P-tyr/gc Electrode Preparationmentioning

confidence: 99%

Study on Cd²⁺ Determination Using Bud‐like Poly‐L‐Tyrosine/Bi Composite Film Modified Glassy Carbon Electrode Combined with Eliminating of Cu²⁺ Interference by Electrodeposition

2020

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A bud‐like poly‐L‐tyrosine/Bi modified glassy carbon electrode (p‐Tyr/Bi/GC) was prepared by CV and in situ Bi plating, whose conductivity and membrane morphology were characterized by CV, EIS and SEM, respectively. The p‐Tyr membrane can effectively promote the enrichment of Cd2+. The optimal Tyr concentration and scanning number for p‐Tyr/GC preparation were 2.0 mmol ⋅ L−1 and 35, while the optimal Bi3+ concentration, pH and Cd2+ accumulation potential in test medium were 3.0 μmol ⋅ L−1, 6.5 and −1.3 V, respectively. The linear equation of p‐Tyr/Bi/GC's response to Cd2+ (1.0 nmol ⋅ L−1 to 2.0 μmol ⋅ L−1) was ip (μA) = −0.6809 + 100.2c (μmol ⋅ L−1) (R2 = 0.9985) with a detection limit of 0.11 nmol ⋅ L−1 (3S/N). The elimination of interference caused by Cu2+ in sample was studied by electrodeposition. The p‐Tyr/Bi/GC electrode was successfully used for detecting Cd in rice samples with good reliability and accuracy. The developed Cd2+ sensor exhibits high sensitivity, wide linear range and low detection limit, especially the designed method of eliminating Cu2+ interference has the characteristics of high selectivity, simple operation and wide application range.

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Section: Optimization Of P-tyr/gc Electrode Preparationmentioning

confidence: 99%

Study on Cd²⁺ Determination Using Bud‐like Poly‐L‐Tyrosine/Bi Composite Film Modified Glassy Carbon Electrode Combined with Eliminating of Cu²⁺ Interference by Electrodeposition

2020

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“…From Table 1, it is evident that the selectivity trend of the copolymeric sensor is considerably affected by the templating technique; hence, the templated electrode has an improved selectivity towards lead ion. The major factors that influence the capability of an ion to compete successfully with other ions in a competition reaction are its size and complexing ability, along with its affinity for receptor sites of the reagent [46]. Based on the improved selectivity of the templated electrode (Table 1), it can be concluded that templating process induces the formation of binding cavities for lead(II) in the P(Ani-co-3ABSA) based sensor.…”

Section: Potentiometric Sensing Characteristicsmentioning

confidence: 99%

Electrochemical Sensor Based on Self-doped Polyaniline with Guest-induced Binding Sites for Detection of Lead(II) Ion

Shojaei¹

2019

International Journal of Electrochemical Science

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An electrochemical approach towards developing a lead(II) ion selective polymer is presented. A poly(aniline-co-3-aminobenzenesulfonic acid), P(Ani-co-3ABSA), membrane would be reconciled with the peculiarities of lead(II) ions by incorporating them. It seems that consecutive embedding/ejecting of lead(II) into-from the mass of P(Ani-co-3ABSA) coating, correspondingly templates the coating towards lead(II) ion. This method results in a highly selective sensor for the measurement of lead(II) ion. The optimal conditions for sensor operation were ascertained. The surface morphology of the freshly synthesized, templated and templated-preconcentrated P(Ani-co-3ABSA) membranes were explored by SEM. The interference effect on the voltammetric response with coexisting ions was also investigated. The developed sensor was applied for lead(II) determination by pre-concentration/differential pulseanodic stripping voltammetry in concentrations of 1.0 nM to 0.1 mM and by potentiometric method in concentrations of 10.0 nM to 1.0 mM.

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“…Also polyaniline (PANI) has been used (Hashemi and Zanganeh, 2016 ) in a scheme involving an imprinting process after polymerization. During synthesis, PANI is doped with a chelating agent, 5-sulfosalicylic acid (SSA).…”

Section: Biomimetic Sensors Based On Electrosynthesized Mipsmentioning

confidence: 99%

From Electrochemical Biosensors to Biomimetic Sensors Based on Molecularly Imprinted Polymers in Environmental Determination of Heavy Metals

2017

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Recent work relevant to heavy metal determination by inhibition-enzyme electrochemical biosensors and by selected biomimetic sensors based on molecularly imprinted polymers has been reviewed. General features and peculiar aspects have been evidenced. The replace of biological component by artificial receptors promises higher selectivity and stability, while biosensors keep their capability of producing an integrated response directly related to biological toxicity of the samples.

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Electrochemically induced regioregularity of the binding sites of a polyaniline membrane as a powerful approach to produce selective recognition sites for silver ion

Cited by 8 publications

References 58 publications

Study on Cd²⁺ Determination Using Bud‐like Poly‐L‐Tyrosine/Bi Composite Film Modified Glassy Carbon Electrode Combined with Eliminating of Cu²⁺ Interference by Electrodeposition

Study on Cd²⁺ Determination Using Bud‐like Poly‐L‐Tyrosine/Bi Composite Film Modified Glassy Carbon Electrode Combined with Eliminating of Cu²⁺ Interference by Electrodeposition

Electrochemical Sensor Based on Self-doped Polyaniline with Guest-induced Binding Sites for Detection of Lead(II) Ion

From Electrochemical Biosensors to Biomimetic Sensors Based on Molecularly Imprinted Polymers in Environmental Determination of Heavy Metals

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Electrochemically induced regioregularity of the binding sites of a polyaniline membrane as a powerful approach to produce selective recognition sites for silver ion

Cited by 8 publications

References 58 publications

Study on Cd2+ Determination Using Bud‐like Poly‐L‐Tyrosine/Bi Composite Film Modified Glassy Carbon Electrode Combined with Eliminating of Cu2+ Interference by Electrodeposition

Study on Cd2+ Determination Using Bud‐like Poly‐L‐Tyrosine/Bi Composite Film Modified Glassy Carbon Electrode Combined with Eliminating of Cu2+ Interference by Electrodeposition

Electrochemical Sensor Based on Self-doped Polyaniline with Guest-induced Binding Sites for Detection of Lead(II) Ion

From Electrochemical Biosensors to Biomimetic Sensors Based on Molecularly Imprinted Polymers in Environmental Determination of Heavy Metals

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Product

Resources

About

Study on Cd²⁺ Determination Using Bud‐like Poly‐L‐Tyrosine/Bi Composite Film Modified Glassy Carbon Electrode Combined with Eliminating of Cu²⁺ Interference by Electrodeposition

Study on Cd²⁺ Determination Using Bud‐like Poly‐L‐Tyrosine/Bi Composite Film Modified Glassy Carbon Electrode Combined with Eliminating of Cu²⁺ Interference by Electrodeposition