A Selective Electrochemical Sensor for the Detection of Cd(II) Based on a Carbon Paste Electrode Impregnated with a Novel Ion‐imprinted Hybrid Polymer

Adauto, Anais; Wong, Ademar; Khan, Sabir; Picasso, Gino; Sotomayor, Marı́a Del Pilar Taboada

doi:10.1002/elan.202100007

Cited by 3 publications

(3 citation statements)

References 45 publications

(73 reference statements)

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“…To calculate the limit of detection (LOD), we employed the following equation: 3S B /m, where S B is the standard deviation of 10 blank solution measurements and m corresponds to its slope [ 49 ]; the limit of quantification was calculated using the following equation: LQ = 10 S B /m. The values obtained for LOD and LOQ were 2.7 × 10 −9 mol L −1 and 9 × 10 −9 mol L −1 , respectively.…”

Section: Resultsmentioning

confidence: 99%

Biomimetic Material for Quantification of Methotrexate Using Sensor Based on Molecularly Imprinted Polypyrrole Film and MWCNT/GCE

et al. 2023

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This study investigates biomimetic sensors for the detection of methotrexate contaminants in environmental samples. Sensors inspired by biological systems are the focus of this biomimetic strategy. Methotrexate is an antimetabolite that is widely used for the treatment of cancer and autoimmune diseases. Due to the widespread use of methotrexate and its rampant disposal into the environment, the residues of this drug are regarded as an emerging contaminant of huge concern, considering that exposure to the contaminant has been found to lead to the inhibition of some essential metabolic processes, posing serious risks to humans and other living beings. In this context, this work aims to quantify methotrexate through the application of a highly efficient biomimetic electrochemical sensor constructed using polypyrrole−based molecularly imprinted polymer (MIP) electrodeposited by cyclic voltammetry on a glassy carbon electrode (GCE) modified with multi−walled carbon nanotubes (MWCNT). The electrodeposited polymeric films were characterized by infrared spectrometry (FTIR), scanning electron microscopy (SEM), and cyclic voltammetry (CV). The analyses conducted using differential pulse voltammetry (DPV) yielded a detection limit of 2.7 × 10−9 mol L−1 for methotrexate, a linear range of 0.01–125 μmol L−1, and a sensitivity of 0.152 μA L mol−1. The results obtained from the analysis of the selectivity of the proposed sensor through the incorporation of interferents in the standard solution pointed to an electrochemical signal decay of only 15.4%. The findings of this study show that the proposed sensor is highly promising and suitable for use in the quantification of methotrexate in environmental samples.

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Section: Resultsmentioning

confidence: 99%

Biomimetic Material for Quantification of Methotrexate Using Sensor Based on Molecularly Imprinted Polypyrrole Film and MWCNT/GCE

et al. 2023

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“…Recently, an ion imprinted hybrid polymer system (IIHP) has just been described, and consisted of imprinted, crosslinked vinylic polymers and sol-gel. –SH from MPS and the imidazole group from the vinylic functional monomer have a synergetic effect of Cd(II) complexation [ 132 ]. Each system (organic or sol-gel) had its own functional and crosslinker monomers (see Table 5 ), but 3-(trimethoxysilyl)propyl methacrylate served as a coupling reagent for organic and inorganic phases.…”

Section: Applications Of Imprinted Polymer-based Electrochemical Sensorsmentioning

confidence: 99%

“…No interference with other metal ions, except for Hg(II) at 50 fold excess. (Drinking or river water)[132]…”

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confidence: 99%

Towards Clean and Safe Water: A Review on the Emerging Role of Imprinted Polymer-Based Electrochemical Sensors

Zheng

Khaoulani

Ktari³

et al. 2021

Sensors

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This review critically summarizes the knowledge of imprinted polymer-based electrochemical sensors for the detection of pesticides, metal ions and waterborne pathogenic bacteria, focusing on the last five years. MIP-based electrochemical sensors exhibit low limits of detection (LOD), high selectivity, high sensitivity and low cost. We put the emphasis on the design of imprinted polymers and their composites and coatings by radical polymerization, oxidative polymerization of conjugated monomers or sol-gel chemistry. Whilst most imprinted polymers are used in conjunction with differential pulse or square wave voltammetry for sensing organics and metal ions, electrochemical impedance spectroscopy (EIS) appears as the chief technique for detecting bacteria or their corresponding proteins. Interestingly, bacteria could also be probed via their quorum sensing signaling molecules or flagella proteins. If much has been developed in the past decade with glassy carbon or gold electrodes, it is clear that carbon paste electrodes of imprinted polymers are more and more investigated due to their versatility. Shortlisted case studies were critically reviewed and discussed; clearly, a plethora of tricky strategies of designing selective electrochemical sensors are offered to “Imprinters”. We anticipate that this review will be of interest to experts and newcomers in the field who are paying time and effort combining electrochemical sensors with MIP technology.

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A highly selective and sensitive electrochemical Cu(II) detector based on ion-imprinted magnetic carbon nanospheres

Li,

Qin,

et al. 2023

New Carbon Materials

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A Selective Electrochemical Sensor for the Detection of Cd(II) Based on a Carbon Paste Electrode Impregnated with a Novel Ion‐imprinted Hybrid Polymer

Cited by 3 publications

References 45 publications

Biomimetic Material for Quantification of Methotrexate Using Sensor Based on Molecularly Imprinted Polypyrrole Film and MWCNT/GCE

Biomimetic Material for Quantification of Methotrexate Using Sensor Based on Molecularly Imprinted Polypyrrole Film and MWCNT/GCE

Towards Clean and Safe Water: A Review on the Emerging Role of Imprinted Polymer-Based Electrochemical Sensors

A highly selective and sensitive electrochemical Cu(II) detector based on ion-imprinted magnetic carbon nanospheres

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