The author of 《Effects of water on ionic liquid electrochemical microsensor for oxygen sensing》 were Liu, Xiaojun; Chen, Xiaoyu; Xu, Yong; Chen, Tongtong; Zeng, Xiangqun. And the article was published in Sensors and Actuators, B: Chemical in 2019. COA of Formula: C8H15BF4N2 The author mentioned the following in the article:
The effect of water on ionic liquid (IL) planar electrochem. microsensor was studied in the case of sensing oxygen. This study compared the key anal. performances of the IL based electrochem. microsensor devices using an IL BmimBF4 direct from the vendor and ‘wet’ BmimBF4 containing different amount of water as electrolytes. The electrochem. properties in [Bmim][BF4] with or without oxygen using a planar microsensor device were characterized by cyclic voltammetry (CV) and electrochem. impedance spectroscopy (EIS). With the increasing of water concentrations in the IL, a pos. shift of redox potential of O2 and a higher reduction current of oxygen in CV measurement were observed The constant potential chronoamperometry measurements were conducted to assess the sensitivity, reproducibility and stability of microsensor at varying O2 concentration using these wet ILs as electrolytes. The short term and long-term stability evaluation of these IL microsensor for sensing oxygen was performed. Our results show that the electrochem. planar microsensor device demonstrates a good sensitivity, reproducibility and stability for sensing oxygen even though the ‘wet’ ILs were used as electrolytes. A remarkable stability of sensor was observed in stability test using as an electrolyte. In the experiment, the researchers used many compounds, for example, 3-Butyl-1-methyl-1H-imidazol-3-ium tetrafluoroborate(cas: 174501-65-6COA of Formula: C8H15BF4N2)
3-Butyl-1-methyl-1H-imidazol-3-ium tetrafluoroborate(cas: 174501-65-6) is a member of lonic liquids. Actually, lonic liquids as innovative fluids have received wide attention only during the past two decades. The number of SCI papers published on lonic liquids has exponentially increased from a few in 1996 to >5000 in 2016, exceeding the annual growth rates of other popular scientific areas. COA of Formula: C8H15BF4N2
Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem