Application of Ionic Liquids in Electrochemistry—Recent Advances

Tiago, Gonçalo A. O.; Matias, Inês; Ribeiro, Ana P. C.

doi:10.3390/molecules25245812

Cited by 118 publications

(56 citation statements)

References 78 publications

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“…Furthermore, a combination of large cation and anion may result in the high internal friction of liquids, which causes the high viscosity of ILs. Moreover, the decrease in viscosity is notable by increasing temperature, presence of impurities, and addition of solvents [ 4 , 85 ]. The moderate viscose nanomaterials could serve as a better binder on the electrode surface, which may effectively increase the immobilization of biomolecules, which results in highly sensitive biosensors.…”

Section: Properties Of Ionic Liquidsmentioning

confidence: 99%

“…Moreover, the remarkable biological and eco-friendly nature, i.e., low-hazardous state, low toxicity, and biodegradability, position them as the better choice in green chemistry processes [ 1 , 2 , 3 ]. In addition, they have excellent properties, such as high conductivity, wide electrochemical window, high stability, low volatility, moderate viscosity, non-flammability, and low melting point [ 4 ]. However, suitable combinations of cationic and anionic species could tune their structural properties to improve their physical and chemical characteristics, like solvation property, melting point, viscosity, density, polarity, low-vapor pressure, hydrophilicity, hydrophobicity, and ionic conductivity [ 1 , 5 ].…”

Section: Introductionmentioning

confidence: 99%

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Functional Ionic Liquids Decorated Carbon Hybrid Nanomaterials for the Electrochemical Biosensors

et al. 2021

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Ionic liquids are gaining high attention due to their extremely unique physiochemical properties and are being utilized in numerous applications in the field of electrochemistry and bio-nanotechnology. The excellent ionic conductivity and the wide electrochemical window open a new avenue in the construction of electrochemical devices. On the other hand, carbon nanomaterials, such as graphene (GR), graphene oxide (GO), carbon dots (CDs), and carbon nanotubes (CNTs), are highly utilized in electrochemical applications. Since they have a large surface area, high conductivity, stability, and functionality, they are promising in biosensor applications. Nevertheless, the combination of ionic liquids (ILs) and carbon nanomaterials (CNMs) results in the functional ILs-CNMs hybrid nanocomposites with considerably improved surface chemistry and electrochemical properties. Moreover, the high functionality and biocompatibility of ILs favor the high loading of biomolecules on the electrode surface. They extremely enhance the sensitivity of the biosensor that reaches the ability of ultra-low detection limit. This review aims to provide the studies of the synthesis, properties, and bonding of functional ILs-CNMs. Further, their electrochemical sensors and biosensor applications for the detection of numerous analytes are also discussed.

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Section: Properties Of Ionic Liquidsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Functional Ionic Liquids Decorated Carbon Hybrid Nanomaterials for the Electrochemical Biosensors

et al. 2021

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“…In recent years, ionic liquids [10,[21][22][23] tend to be actively used as electrolytes for a lot of electrochemical processes. Ionic liquids are of growing interest due to their outstanding advantages against aqueous solutions.…”

Section: Electropolishing Mechanismsmentioning

confidence: 99%

“…However, water is electrochemically active at potentials of discharge of the majority of metals and can also take part in electrode reactions. On the other hand, ionic liquids [9] (IL) demonstrate larger electrochemical windows and are already used as electrolytes in medicine and industry [10].…”

Section: Introductionmentioning

confidence: 99%

Advantages of Electrochemical Polishing of Metals and Alloys in Ionic Liquids

Lebedeva

Kultin

Zakharov

et al. 2021

Metals

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Electropolishing of metal surfaces is a benign alternative to mechanical treatment. Ionic liquids are considered as green electrolytes for the electropolishing of metals. They demonstrate a number of advantages in comparison with acid aqueous solutions and other methods of producing smooth or mirror-like surfaces that are required by diverse applications (medical instruments, special equipment, implants and prostheses, etc.). A wide window of electrochemical stability, recyclability, stability and tunability are just a few benefits provided by ionic liquids in the title application. An overview of the literature data on electropolishing of such metals as Ti, Ni, Pt, Cu, Al, U, Sn, Ag, Nb, stainless steel and other alloys in ionic liquids is presented.

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“…Part of their attractiveness is that they possess the conductive properties of ILs and the physical properties of the matrix materials used, and the physicochemical properties can be tuned by choosing from an enormous array of cation-anion pairs. The ionogels described in the literature continue to grow in number and have been the subjects of various reviews [1][2][3][4]. One of the most common approaches is to use polymers to entrap or chemically bind the IL.…”

Section: Introductionmentioning

confidence: 99%

Electrode Kinetics of Ion Jelly and Ion Sol-Gel Redox Materials on Screen-Printed Electrodes

2022

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Several hydrogel materials have been proposed for drug delivery systems and other purposes as interfacial materials, such as components for fuel cells and immobilization of biomolecules. In the present work, two materials, an ion sol-gel, based on 1-octyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide, and an ion jelly (1-ethyl-3-methylimidazolium ethylsulfate) film deposited on carbon screen-printed electrodes, were electrochemically characterized. The electrode kinetics of ion jelly and ion sol-gel materials were compared by using ferrocyanide/ferricyanide redox reaction couple as a model redox process. Diffusion coefficients were calculated and compared to those obtained with the model redox couple in non-modified electrodes. Results pointed to a decrease of two and four orders of magnitude in the diffusion coefficients, respectively, for ion jelly and ion sol-gel film modified electrodes. Heterogeneous electron transfer constants for the ferrocyanide/ferricyanide ion redox process were also determined for modified and non-modified electrodes, in which the ion sol-gel film modified electrode presented the lower values. This work sought to contribute to the understanding of these materials’ properties, with emphasis on their diffusion, conductivity, and electrochemical behavior, namely reversibility, transfer coefficients, and kinetics, and optimize the most suitable properties for different possible applications, such as drug delivery.

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Application of Ionic Liquids in Electrochemistry—Recent Advances

Cited by 118 publications

References 78 publications

Functional Ionic Liquids Decorated Carbon Hybrid Nanomaterials for the Electrochemical Biosensors

Functional Ionic Liquids Decorated Carbon Hybrid Nanomaterials for the Electrochemical Biosensors

Advantages of Electrochemical Polishing of Metals and Alloys in Ionic Liquids

Electrode Kinetics of Ion Jelly and Ion Sol-Gel Redox Materials on Screen-Printed Electrodes

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