The low-temperature phase-transition of silver oxide (Ag2O) has been investigated by extended x-ray absorption fine structure (EXAFS) spectroscopy as a function of temperature. The thermal evolution of the local structure around Ag atoms has been determined. In particular, below the phase-transi...detailed
The synthesis and characterization of a reference sample containing a distinct geometrical pattern of Cu2O (cuprite) are described. The sample is to be used as an assessment sample to evaluate a newly developed X-ray-excited optical luminescence (XEOL) microscope, built for non-destructive chemi...detailed
A Cu2O thin film of cuprite crystal structure was fabricated via a decomposition reaction of water vapor generated by ultrasonic vibration. The thin film, which was grown on a soda-lime glass substrate at 530 °C, exhibited a prominent (111) preferred orientation with an optical bandgap of about...detailed
Cuprite crystals, Cu2O and Ag2O, display a negative thermal expansion in a wide temperature range. This work shows, through a phenomenological approach, how the next-nearest-neighbors dynamics observed by EXAFS in both crystals [A. Sanson, F. Rocca, G. Dalba, P. Fornasini, R. Grisenti, M. Dapiag...detailed
The interaction of freshly abraded surfaces of cuprite, Cu2O, with neutral or mildly alkaline aqueous solutions of diethyl or di-n-butyl dithiophosphate (DTP) has been investigated by means of conventional and synchrotron X-ray photoelectron spectroscopy and near-edge X-ray absorption fine struc...detailed
The paper reports the synthesis and characterization of cuprite/copper ferrite nanopowder composites. The composites were synthesized using co-precipitation with oxalates precursor route. The phase and microstructure of the powder samples were characterized using X-ray diffraction, BET surface a...detailed
Cuprite is a difficult oxide to leach under acidic conditions (for the maximum extraction of 50%). In this research, the feasibility of leaching cuprite in an ammoniacal medium was studied. The working conditions addressed here were the liquid/solid ratio (120:1–400:1 mL/g), stirring speed (0–...detailed