Trace detection of oxygen – ionic liquids in gas sensor design

New hydrophobic ionic liquids with perfluoroalkyl phosphate and cyanofluoroborate anions

“…Due to these properties FAP ILs are entitled as ultrahydrophobic ionic liquids [12,[17][18][19]. The advantageous properties of FAP ionic liquids [20] make them attractive for various applications, namely for liquid-liquid extractions and separations [17,18,[21][22][23], chemical technology [24][25][26][27][28][29], analytics [23,[30][31][32][33][34], electrochemistry [2, 4, 35-37, 40, 41], lubrication [38,39], sensors [31][32], catalysis [42,43], polymer electrolytes [40], the preparation of carbon-based composite materials [44], polymer chemistry [45], membrane technology [46], and the generation of ion beams for electrical propulsion [47]. FAP ionic liquids are robust liquid media that can serve as solvents for chemical reactions with aggressive substances, for instance with elemental fluorine [48].…”

Electrochemical Sensors: trace detection for specific detection and pattern recognition for complex matrices

“…After having investigated the basic electrochemistry of the researched system a variety of electrochemical methods can be applied to maximize the sensitivity, accelerate the measurement, preconcentrate the target substance at the electrode surface or keep the surface clean and free: square wave voltammetry, differential pulse voltammetry, stripping voltammetry, impedance measurements, polarography or chronoamperometry are just a few to be named here. Figure 4 shows an example of an oxygen sensor using chronoamperometry [3]. Chronoamperometrical sensor responses to oxygen [3].…”

“…Figure 4 shows an example of an oxygen sensor using chronoamperometry [3]. Chronoamperometrical sensor responses to oxygen [3].…”

Near Infrared Sensor to Determine Carbon Dioxide Gas Based on Ionic Liquid

“…They present a wide liquid range together with good characteristic properties: high thermal and chemical stability, low volatility, significant electrical conductivity, high polarity, and great to dissolve an extensive range of compounds [1]. This makes them suitable for a wide variety of applications in different areas: catalytic organic transformations [2], such as lubricants; heat transfer fluids in biocatalysis [3]; biomedical and pharmaceutical applications [3]; separation and extraction processes [4]; as well as biotechnology [5] and nanoscience [6], as ideal electrolytes for use in a great number of electrochemical devices [7] such as batteries, capacitors, fuel cells, and solar cells [8]; biomolecule sensing [9,10]; explosives [11]; the determination of gas compounds [11,12]; and the development of sensors [13][14][15].…”