Evaluation of a simple disposable microband electrode device for amperometric gas sensing was written by Xiong, Linhongjia;Goodrich, Peter;Hardacre, Christopher;Compton, Richard G.. And the article was included in Sensors and Actuators, B: Chemical in 2013.Reference of 79917-89-8 This article mentions the following:
The authors report a simple and facile methodol. for constructing Pt (6.3 mm × 50 μm) and Cu (6.3 mm × 30 μm) annular microband electrodes for use in room temperature ionic liquids (RTILs) and propose their use for amperometric gas sensing. The suitability of microband electrodes for use in electrochem. anal. was examined in experiments on two systems. The 1st system studied to validate the electrochem. responses of the annular microband electrode was decamethylferrocene (DmFc), as a stable internal reference probe commonly used in ionic liquids, in [Pmim][NTf2], where the diffusion coefficients of DmFc and DmFc+ and the standard electron rate constant for the DmFc/DmFc+ couple were determined through fitting chronoamperometric and cyclic voltammetric responses with relevant simulations. These values are independently compared with those collected from a com. available Pt microdisc electrode with excellent agreement. The 2nd system focuses on O2 reduction in [Pmim][NTf2], which is used as a model for gas sensing. The diffusion coefficients of O2 and O2– and the electron transfer rate constant were again obtained using chronoamperometry and cyclic voltammetry, along with simulations. Results determined from the microbands are again consistent to those evaluated from the Pt microdisc electrode when compared these results from home-made microband and com. available microdisc electrodes. The fabricated annular microband electrodes are suitable for quant. measurements. Further the successful use of the Cu electrodes in the O2 system suggests a cheap disposable sensor for gas detection. In the experiment, the researchers used many compounds, for example, 1-Methyl-3-propylimidazolium Chloride (cas: 79917-89-8Reference of 79917-89-8).
1-Methyl-3-propylimidazolium Chloride (cas: 79917-89-8) belongs to imidazole derivatives. Many natural products, especially alkaloids, contain the imidazole ring. These imidazoles share the 1,3-C3N2 ring but feature varied substituents. Many drugs contain an imidazole ring, such as certain antifungal drugs, the nitroimidazole series of antibiotics, and the sedative midazolam.Reference of 79917-89-8
Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem