The synthesis and super capacitive characterization of microwave-assisted highly crystalline α-FeO/FeO nanoheterostructures.

A facile microwave-assisted solvothermal process for the synthesis of narrow-size distributed α-FeO, α-FeO/FeO, and FeO nanostructures was demonstrated using PVP as a surfactant. During the reaction, the influence of the reaction media, such as the mixture of ethylene glycol and water on the formation of α-FeO, α-FeO/FeO, and FeO was systematically studied. Interestingly, pure aqueous medicated solvothermal reaction conferred phase pure rhombohedral FeO (hematite) and linearly upsurging the formation of cubic FeO (magnetite) with the increasing concentration of EG and further, in pure EG, it deliberated cubic FeO.

Degradation of organic pollutants by Ag, Cu and Sn doped waste non-metallic printed circuit boards.

The disposal and reuse of waste printed circuit boards have been the major global concerns. Printed circuit boards, a form of Electronic waste (hereafter e-waste), have been chemically processed, doped with Ag, Cu and Sn, and used as visible light photocatalysts against the degradation of methylene blue and methyl violet. The elemental analyses of pristine and metal doped printed circuit board were obtained using energy dispersive X-ray fluorescence (EDXRF) spectra and inductively coupled plasma optical emission spectroscopy (ICP-OES).