Publications by authors named "F Cova"
Past research on people's moral judgments about moral dilemmas has revealed a connection between utilitarian judgment and reflective cognitive style. This has traditionally been interpreted as reflection is conducive to utilitarianism. However, recent research shows that the connection between reflective cognitive style and utilitarian judgments holds only when participants are asked whether the utilitarian option is permissible, and disappears when they are asked whether it is recommended.
View Article and Find Full Text PDFArticle Synopsis
- Adding silicon to graphite anodes significantly increases lithium-ion battery energy density but also causes mechanical instability due to volume changes during charging and discharging.
- Research reveals that in silicon-rich graphite anodes, lithiation dynamics differ based on silicon content, with distinct behaviors observed in charge/discharge processes compared to graphite-only electrodes.
- Key observations include the preferential lithiation of amorphous silicon and challenges in lithium diffusion, which are essential insights for improving the stability and performance of high-energy-density silicon-graphite anodes.
Singlet Oxygen Photocatalytic Generation by Silanized TiO Nanoparticles.
Angew Chem Int Ed Engl
January 2025
A commercial TiO sample, used as received or hydrothermally treated to increase surface hydroxylation, has been functionalized by surface modification with hexadecyltrimethoxysilane. The anchoring of the silane has been characterized by means of FTIR and solid-state NMR spectroscopies, and the grafting density was determined by thermogravimetric and N physisorption analyses. The silane moieties induce a partial decrease of the shielding of the valence electrons of the Ti ions at the surface, and a local modification of their crystal field, as demonstrated by XPS and UV/Vis spectroscopy, respectively.
View Article and Find Full Text PDFThe layered material α-RuCl is a promising candidate to realize the Kitaev quantum spin liquid (QSL) state. However, at ambient pressure, deviations from the perfect Kitaev geometry prevent the existence of the QSL state at low temperatures. Here we present the discovery of a pressure-induced high-symmetry phase in α-RuCl, which creates close to ideal conditions for the emergence of a QSL.
View Article and Find Full Text PDFArticle Synopsis
- Researchers observed a phase transition from triclinic to monoclinic in a photoluminescent organo-gold(I) compound under high pressure using synchrotron diffraction techniques.
- The transition begins at around 0.6 GPa, and a detailed structure of the new monoclinic phase was determined with advanced refinement methods.
- The study highlights that rapid diffraction experiments can mistakenly indicate higher pressure levels for phase transitions due to the slow kinetics of the transformation process.