Electrodeposition of selenium (Se) in an amide type hydrophobic room temperature ionic liquid, 1-butyl-1-methylpyrrolidinium bis(trifluoromethylsulfonyl)amide (BMPTFSA) containing SeCl4 as a Se source in the presence of excess chloride on a glassy carbon electrode was studied at 25 and 50°C. Raman spectroscopy showed SeCl4 in BMPTFSA with excess chloride forms an octahedral chlorocomplex of [SeCl6]2-. The reduction of [SeCl6]2- to Se and that of Se to Se(-II) were observed by cyclic voltammetry. Electrodeposits obtained by potentiostatic electrolysis were confirmed to be metallic Se by energy dispersive X-ray, X-ray diffraction, Raman spectroscopy and X-ray photoelectron spectroscopy.
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Renewable Energy, Sustainability and the Environment
- Surfaces, Coatings and Films
- Materials Chemistry