Self-supported copper (Cu) and Cu-based nanoparticle growth by bottom-up process onto borophosphate glasses

EPR and CV studies cast further light on the origin of the enhanced hydrogen production through glycerol photoreforming on CuO:TiO2 physical mixtures

“…As we mentioned above, the EPR spectrum corresponding to the image in Fig. 7A (gray color) presented signals associated with both glycerol and CuO [56][57][58] while after 2 hours of reaction (Fig. 7B) the EPR spectrum exclusively showed the signal associated with glycerol, in agreement with the presence of reduced copper species, either Cu2O or Cu 0 since both are diamagnetic and thus inactive in EPR.…”

“…During this period hydrogen production gradually disappeared (Fig. 7F) and, at the end of the period, the EPR signal associated to CuO [56][57][58] reappeared, confirming the re-oxidation of copper species (Fig. 7C).…”

Borophosphate glass as an active media for CuO nanoparticle growth: an efficient catalyst for selenylation of oxadiazoles and application in redox reactions

“…www.nature.com/scientificreports/ The Raman spectrum of undoped borophosphate glass samples shows two broad bands located below and above ≈ 810 cm −1 . The most intense band is located between 810 cm −1 and 1320 cm −132, 43 . The addition of copper ions does not change considerably the profile of the Raman spectra 3,44 .…”

Self-supported nickel nanoparticles on germanophosphate glasses: synthesis and applications in catalysis

“…We have also evaluated their performance in catalysis, Surface-enhanced Raman Spectroscopy (SERS), and antibacterial applications. [5][6][7][8][9] Phosphate-based glasses can be obtained at relatively low temperature by melt-quenching technique using affordable chemical reagents (e.g., KH 2 PO 4 , P 2 O 5 , NaPO 3 or NaH 2 PO 4 ). In addition, this type of glass becomes even more interesting because it can be easily doped with transition metal ions, alkali, and rare earth oxides to provide the desired physical and/or chemical characteristics.…”