Concept
Sulfure de cuivre
Publications associées (95)
Can dd excitations mediate pairing?
Christophe Berthod, Francesco Barantani
The Cu-3d states in the high-T-c cuprates are often described as a single band of 3d(x2-y2) states, with the other four 3d states having about 2 to 3 eV higher energy due to the lower-than-octahedral crystal field at the copper sites. However, excitations ...
Amsterdam2023Development of a magnetic calcium-alginate hydrogel-sphere encapsulated with Fe-Mn-Zr ternary metal composite for heavy metal adsorption
Heavy metal contamination has become one of the greatest global environmental problems. In this study, a magnetic calcium-alginate hydrogel-sphere encapsulated with Fe-Mn-Zr ternary-metal composite (MCHETC) was prepared through a combined co-precipitation ...
2023A versatile platform for graphene nanoribbon synthesis, electronic decoupling, and spin polarized measurements
Johannes Schwenk, Donat Fabian Natterer
The on-surface synthesis of nano-graphenes has led the charge in prototyping structures with perspectives beyond silicon-based technology. Following reports of open-shell systems in graphene-nanoribbons (GNRs), a flurry of research activity was directed at ...
ROYAL SOC CHEMISTRY2023Electron-phonon driven unconventional superconductivity: The role of small Fermi energies and of nonadiabatic processes
The very concept of high-T-c superconductivity has originated from the discovery of superconductivity in copper oxides by Bednorz and Muller in 1986. Soon after their discovery, cuprates were recognized as undoubtedly complex and radically unconventional s ...
ELSEVIER2023Active sites on copper-based catalysts for electrochemical CO2 reduction selectively to C2+ products
Electrochemical CO2 reduction (eCO2RR) towards value-added chemicals, powered by renewable electricity, is a promising technology for storing the intermittent renewable energy in the form of chemical bonds. Among the various products of eCO2RR, multi-carbo ...
EPFL2022Solar reduction of carbon dioxide on copper-tin electrocatalysts with energy conversion efficiency near 20%
Shaik Mohammed Zakeeruddin, Yuhang Liu, Jing Gao, Dan Ren, Jun Li, Meng Xia
Solar-driven carbon dioxide reduction has witnessed a renaissance in the past decades, but the system suffers from low reaction rates. Here the authors develop a copper/tin-oxide electrocatalyst, achieving a new benchmark solar-to-CO energy conversion effi ...
NATURE PORTFOLIO2022Copper, my precious!
To produce chemicals and fuels from CO2 and water while storing excess energy from renewable resources will play a big role in sustainability. Three decades ago, we learned that copper possesses the unique ability to break the stable CO2 bonds and to form ...
NATURE PORTFOLIO2021Copper-catalyzed transformations of carboradicals generated by electrochemical and photochemical methods: oxidative amination and polyfluoroarylation
Organic radicals are highly active species that can undergo various transformations. Electrochemistry and photochemistry are efficient methods for the generation of these species of high energy, through single electron transfer processes under mild conditi ...
EPFL2021New Insights into the Interface of Electrochemical Flow Cells for Carbon Dioxide Reduction to Ethylene
Shaik Mohammed Zakeeruddin, Jing Gao, Dan Ren
The implementation of an electrochemical flow cell has enabled improved efficiency for CO2 reduction. However, in situ spectroscopic insights into the interface are still lacking. Here, we investigate a series of copper layers with different thicknesses on ...
AMER CHEMICAL SOC2021