Publications by authors named "Zamorano Gijsberg"
Halide Mixing in CsAgBi(I Br ) Double Perovskites: A Pathway to Tunable Excitonic Properties.
J Phys Chem C Nanomater Interfaces
September 2024
Article Synopsis
- CsAgBiBr is a promising semiconductor but has limitations for solar cell use due to its indirect band gap and localized electronic structure.
- Recent research on CsAgBi(I, Br) nanocrystals shows that mixing halides significantly alters the electronic properties and optical excitations, enhancing exciton behavior.
- The study confirms that up to 11% iodide can be mixed into the bulk material using mechanosynthesis, leading to a red-shifted absorption that aligns with theoretical predictions.
Oxide-derived copper electrodes have displayed a boost in activity and selectivity toward valuable base chemicals in the electrochemical carbon dioxide reduction reaction (CO2RR), but the exact interplay between the dynamic restructuring of copper oxide electrodes and their activity and selectivity is not fully understood. In this work, we have utilized time-resolved surface-enhanced Raman spectroscopy (TR-SERS) to study the dynamic restructuring of the copper (oxide) electrode surface and the adsorption of reaction intermediates during cyclic voltammetry (CV) and pulsed electrolysis (PE). By coupling the electrochemical data to the spectral features in TR-SERS, we study the dynamic activation of and reactions on the electrode surface and find that CO is already activated to carbon monoxide (CO) during PE (10% Faradaic efficiency, 1% under static applied potential) at low overpotentials (-0.
View Article and Find Full Text PDF