Preliminary Polarographic Studies of Sulfur and Selenium Solutions in Hydrazine Hydrate

Abstract

The dropping mercury electrode polarographic behavior of sulfur and selenium solutions in hydrazine hydrate has been studied in highly alkaline aqueous solution containing supporting electrolyte of 0.1 M ammonium tartrate (1 M=l mol dm−3). Both the sulfur and selenium revealed a composite anodic–cathodic waves. The values of E1⁄2 for sulfur and selenium solutions, taken from the cathodic wave of the polarograms corresponded to E1⁄2=−0.78 and −1.03 V vs. SCE respectively. The effect of mercury pressure and concentration of depolarizer on the relative magnitude of the wave heights has also been studied on the basis of typical reactions involved at DME in this solvent medium. No maxima supressor was used in the present study for both cases.

Observation of the Meyer–Neldel rule in nanocrystalline PbSe thin films

“…After completion of the refluxing process, the mixture was filtered, and the solution was kept in the dark to prevent photo-oxidation. ions with evolution of nitrogen [31]. In the synthesis of PbSe thin films via aqueous route in a reaction beaker, the bath deposition was obtained by using the stock solutions as detailed in the previous section.…”