Synthesis and electrochemical characterization of original “TEMPO” functionalized multiwall carbon nanotube materials: Application to iron (II) detection

Elouarzaki, Kamal; Popescu, Luisa Roxana; Gorgy, Karine; Holzinger, Michael; Amarandei, Cristina-Andreea; Ungureanu, Eleonora‐Mihaela; Cosnier, Serge

doi:10.1016/j.elecom.2015.08.024

Cited by 13 publications

(5 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…To test the ion-repulsion hypothesis further, TEMPO, another well-known redox probe was employed. , TEMPO is a heterocyclic radical with intrinsic stability that permits its use in a wide variety of chemical applications . As shown in Scheme , TEMPO can readily undergo a reversible one-electron oxidation and a reduction reaction, wherein, upon oxidation, TEMPO produces a cationic oxoammonium ion (TEMPO + ).…”

Section: Resultsmentioning

confidence: 99%

Electropolymerized Pyrrole-Based Conductive Polymeric Ionic Liquids and Their Application for Solid-Phase Microextraction

Devasurendra¹,

Zhang

Young³

et al. 2017

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

Pyrrole was covalently bonded to 1-methyl and 1-benzylimidazolium ionic liquids (ILs) via an N-substituted alkyl linkage to prepare electropolymerizable IL monomers with excellent thermal stability. The methylimidazolium IL, [pyrrole-CMIm], was then electropolymerized on macro- and microelectrode materials to form conductive polymeric IL (CPIL)-modified surfaces. Electrochemical characterization of a 1.6 mm diameter Pt disk electrode modified with poly[pyrrole-CMIm] demonstrated a selective uptake for an anionic redox probe while rejecting a cationic redox probe. Furthermore, electropolymerization of [pyrrole-CMIm] doped with single-walled carbon nanotubes (SWNT) on 125 μm platinum wires produced 42 μm thick poly[pyrrole-CMIm]/SWNT films compared to 17 μm in the absence of SWNT and 5 μm for the previously reported poly[thiophene-CMIm] coatings. The poly[pyrrole-CMIm]/SWNT films were prepared with reproducible thicknesses as well as thermal properties sufficient for high-temperature applications, such as solid-phase microextraction (SPME) with gas chromatographic analysis. The utilization of the CPIL sorbent materials in SPME experiments provided excellent extraction efficiencies and selectivity toward organic aromatic analytes. The CPIL sorbent coatings also yielded outstanding fiber-to-fiber reproducibility on the basis of extraction efficiencies and improved response for a range of analytes relative to commercial 100 μm poly(dimethylsiloxane) fibers when normalized for differences in film thickness. Poly[pyrrole-CMIm] CPIL coatings doped with SWNT are therefore promising new sorbent materials for SPME analyses.

show abstract

Section: Resultsmentioning

confidence: 99%

Electropolymerized Pyrrole-Based Conductive Polymeric Ionic Liquids and Their Application for Solid-Phase Microextraction

Devasurendra¹,

Zhang

Young³

et al. 2017

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

show abstract

“…The presence of carboxylate and pyridinium functional groups as negative and positive charge bearers over the surface of CNMs enhances the affinity of electrochemical sensing of cations and anions, respectively. The potential to modify carbon nanotubes with multiple chelating molecules with different selectivity towards various analytes attract designing of fancy sensor [12,13].…”

Section: Influence Of Surface Group (Chromophores) and Sensing Sitesmentioning

confidence: 99%

“…The interfacial interaction can be enhanced by the surface-functionalization of nanotubes. The polar groups [12] on the nanotube surface increase the adsorption affinity of the electron-donor or acceptor pollutants and consequently offer better response. The detection of mercury ion at the Au-NPs interface is more sensitive and selective because they can form amalgam only with Hg compared to other metal ions.…”

Section: Introductionmentioning

confidence: 99%

Application of Carbon Nanomaterials Decorated Electrochemical Sensor for Analysis of Environmental Pollutants

Kumar¹,

Srivastva²

2021

Analytical Chemistry - Advancement, Perspectives and Applications

View full text Add to dashboard Cite

Carbon nanomaterials (CNMs), especially carbon nanotubes and graphene, have been attracting tremendous attention in environmental analysis for rapid and cost effective detection of various analytes by electrochemical sensing. CNMs can increase the electrode effective area, enhance the electron transfer rate between the electrode and analytes, and/or act as catalysts to increase the efficiency of electrochemical reaction, detection, adsorption and removal are of great significance. Various carbon nanomaterials including carbon nanotubes, graphene, mesoporous carbon, carbon dots exhibited high adsorption and detection capacity. Carbon and its derivatives possess excellent electro catalytic properties for the modified sensors, electrochemical methods usually based on anodic stripping voltammetry at some modified carbon electrodes. Metal electrode detection sensitivity is enhanced through surface modification of working electrode (GCE). Heavy metals have the defined redox potential. A remarkable deal of efficiency with the electrochemical sensors can be succeeded by layering the surface of the working electrode with film of active electro-catalytic species. Usually, electro catalysts used for fabrication of sensors are surfactants, nano-materials, polymers, carbon-based materials, organic ligands and biomaterials.

show abstract

“…enhanced electrocatalytic behavior [11], which has been achieved through immobilization onto various solid surfaces including Si electrodes [12,13], ITO [14], multiwalled carbon nanotubes [15], glassy carbon electrodes (GCE) [11,16], and graphite electrodes [17,18]. Several methods have been employed to achieve immobilization including chemisorption [12], π-stacking [15], electropolymerization [14], and covalent bonding [11,18]. Graphene (G) has emerged as a promising material owing to its unique two-dimensional structure.…”

Section: Tempo-based Electroactive Interfaces Have Attracted Great Atmentioning

confidence: 99%

Electrografting of amino-TEMPO on graphene oxide and electrochemically reduced graphene oxide for electrocatalytic applications

Yuan

Zhang

et al. 2017

Electrochemistry Communications

View full text Add to dashboard Cite

4-amino-2,2,6,6-tetramethyl-1-piperridine N-oxyl (4-amino-TEMPO), an electroactive nitroxide radical, was attached to the surface of graphene oxide (GO) and electrochemically reduced graphene oxide (ERGO) modified glassy carbon electrode by a simple, rapid and green electrografting method. The electroactive interfaces were analyzed by X-ray photoelectron spectroscopy (XPS) and cyclic voltammetry (CV). The calculated surface coverage for 4-amino-TEMPO is up to 1.55 × 10-9 mol•cm-2. The modified electroactive interface exhibited excellent electrocatalytic activity towards the electro-oxidation of reduced glutathione (GSH) and hydrogen peroxide (H 2 O 2).

show abstract

Synthesis and electrochemical characterization of original “TEMPO” functionalized multiwall carbon nanotube materials: Application to iron (II) detection

Cited by 13 publications

References 30 publications

Electropolymerized Pyrrole-Based Conductive Polymeric Ionic Liquids and Their Application for Solid-Phase Microextraction

Electropolymerized Pyrrole-Based Conductive Polymeric Ionic Liquids and Their Application for Solid-Phase Microextraction

Application of Carbon Nanomaterials Decorated Electrochemical Sensor for Analysis of Environmental Pollutants

Electrografting of amino-TEMPO on graphene oxide and electrochemically reduced graphene oxide for electrocatalytic applications

Contact Info

Product

Resources

About