Natural Sulfide Minerals as Electrode Materials for Electrochemical Analysis in Dipolar Aprotic Solvents

摘要

Dipolar aprotic solvents are compounds with the relative permittivity higher than 15 and a dipolemoment greater than 2 D. Solvents of this type are applied in the field of kinetic, catalytic andelectrochemical studies. Many organic molecules with high molecular weight are readily dissolved indipolar aprotic solvents. These solvents have relatively high pKS and wide-area working potentialwhich allows the determination of a large number of compounds in them. This review was written toprovide the insight of electrochemistry in non-aqueous solutions, primarily based on thecharacterization and application of some solid-state sensors in a non-aqueous environment. Firstly, ithighlights the results obtained over many years of investigation in our laboratory with the aim tocontribute to the development of pure and applied chemistry in non-aqueous solutions. The review isdivided into two main parts. The first part contains a discussion of solvent properties which furtherbasically determine their application in electrochemistry. Second part mainly deals with thecharacteristics and use of the natural sulfide minerals (pyrite, chalcopyrite, and arsenopyrite) aselectrochemical sensors in non-aqueous solutions for different purposes.