Electrochemical behaviors and spectral studies of ionic liquid (1-butyl-3-methylimidazolium tetrafluoroborate) based sol–gel electrode

Zhang, Ling; Zhang, Qian; Li, Jinghong

doi:10.1016/j.jelechem.2007.02.021

Cited by 41 publications

(7 citation statements)

References 31 publications

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“…However, it is not observed in BHPT as the C=N vibrations may be weak. The wide peak at 3600-4000 cm -1 was attributed to hydrogen bonding, possibly due to water molecules adsorbed on the surface [29,83]. This is present in BMIM-PF 6 and in BHPET but not in BHPT.…”

Section: Conventional Tribological Studiesmentioning

confidence: 95%

A Review of Ionic Liquids for Green Molecular Lubrication in Nanotechnology

2010

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Common industrial lubricants include natural and synthetic hydrocarbons and perfluoropolyethers (PFPEs), where the latter is widely used in commercial applications requiring extreme operating conditions due to their high temperature stability and extremely low vapor pressure. However, PFPEs exhibit low electrical conductivity, making them undesirable in some nanotechnology applications. Ionic liquids (ILs) have been explored as lubricants for various device applications due to their excellent electrical conductivity as well as good thermal conductivity, where the latter allows frictional heating dissipation. Since they do not emit volatile organic compounds, they are regarded as ''green'' lubricants. In this article, we review the different types of ILs and their physical properties responsible for lubrication. We also discuss their suitability as lubricants, since the long-term performance of ILs as lubricants may be affected by issues such as corrosion, oxidation, tribochemical reactions, and toxicity. We present nanotribological, electrical, and spectroscopic studies of IL films along with conventional tribological investigations, recognizing that understanding the tribological performance at various length scales is a crucial step in selecting and designing effective lubricants.

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Section: Conventional Tribological Studiesmentioning

confidence: 95%

A Review of Ionic Liquids for Green Molecular Lubrication in Nanotechnology

2010

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“…Opallo et al investigated the electroactivity of CCE modified with ionic liquids [22][23][24][25]. Zhang et al fabricated a 1-butyl-3-methylimidazolium tetrafluoroborate based silica sol-gel matrix modified gold electrode [26]. The reaction mechanism of ionic liquid in the sol-gel process was also explored to develop a new supported nano-liquid catalyst [27].…”

Section: Introductionmentioning

confidence: 99%

Sensitive electrochemical detection of hydroquinone with carbon ionogel electrode based on BMIMPF6

Sun

et al. 2011

Journal of Electroanalytical Chemistry

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“…Electrochemical sensors have historically proven to be an ideal detection platform due to its simplicity in design, direct transduction signal readout, fast response times, good selectivities and sensitivities. 19-21,22,23 Electrochemical sensors require the use of an electrolyte; diisocyanates are not stable in many conventional electrolytes, especially aqueous electrolytes, limiting the development of such electrochemical sensors.…”

Section: Introductionmentioning

confidence: 99%

2,4-Toluene diisocyanate detection in liquid and gas environments through electrochemical oxidation in an ionic liquid

Lü

Rehman

Chi

et al. 2016

Analyst

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The electrochemical oxidation of 2,4-toluene diisocyanate (2,4-TDI) in an ionic liquid (IL) has been systematically characterized to determine plausible electrochemical and chemical reaction mechanisms and to define the optimal detection methods for such a highly significant analyte. It has been found that the use of an IL as the electrolyte allows the oxidation of 2,4-TDI to occur at a less positive anodic potential with no side reactions as compared to traditional acetonitrile based electrolytes. UV-Vis, FT-IR, Cyclic Voltammetry and Electrochemical Impedance Spectroscopy (EIS) studies have revealed the unique mechanisms of dimerization of 2,4-TDI at the electrode interface by self-addition reactions, which can be utilized to improve the selectivity of detection. The study of 2,4-TDI redox chemistry further facilitates the development of a robust amperometric sensing methodology by selecting a hydrophobic IL ([C4mpy][NTf2]) and by restricting the potential window to only include the oxidation process. Thus, this innovative electrochemical sensor is capable of avoiding the two most ubiquitous interferents in ambient conditions (i.e. humidity and oxygen), thereby enhancing the sensor performance and reliability for real world applications. The method was established to detect 2,4–TDI in both liquid and gas phases. The limits of detection (LOD) values were 130.2 ppm and 0.7862 ppm, respectively, for the two phases, and are comparable to the safety standards reported by NIOSH. The as-developed 2.4-TDI amperometric sensor exhibits a sensitivity of 1.939 μA/ppm. Moreover, due to the simplicity of design and the use of an IL both as a solvent and non-volatile electrolyte, the sensor has the potential to be miniaturized for smart sensing protocols in distributed sensor applications.

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Electrochemical behaviors and spectral studies of ionic liquid (1-butyl-3-methylimidazolium tetrafluoroborate) based sol–gel electrode

Cited by 41 publications

References 31 publications

A Review of Ionic Liquids for Green Molecular Lubrication in Nanotechnology

A Review of Ionic Liquids for Green Molecular Lubrication in Nanotechnology

Sensitive electrochemical detection of hydroquinone with carbon ionogel electrode based on BMIMPF6

2,4-Toluene diisocyanate detection in liquid and gas environments through electrochemical oxidation in an ionic liquid

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