RT info:eu-repo/semantics/article
T1 Solar light-driven reduction of crystal violet by a composite of g-C3N4, β-Ag2Se, γ-Fe2O3 and graphite
A1 Dante, Roberto C.
A1 Martín Ramos, Pablo
A1 Chamorro Posada, Pedro
A1 Rutto, Dario
A1 Vázquez Cabo, José
A1 Dante, Denisse G.
A1 Barberis, Riccardo
A1 Rubiños López, Óscar
AB In this work, a new g-C3N4-based Z-scheme with γ-Fe2O3 and β-Ag2Se both n-type semiconductors, and graphite to favor electron exchange is presented. The composite material was studied by XRD, FTIR, UV-Vis, TEM, XPS, TGA, DSC and TOF-SIMS, and the ability of this photocatalytic system to act as a photo-reductant was assessed using crystal violet (CV+) dye. Solar light driven photo-reduction of CV+ in the presence of tri-sodium citrate evidenced a synergistic enhancement of the activity of the composite toward reduction, with ∼20 times higher conversion rates per unit of surface area than those of g-C3N4. Photo-oxidation experiments under Xe lamp irradiation in the presence of H2O2 also showed that the AgFeCN composite featured a higher activity (∼8×) than g-C3N4. This Z-scheme may deserve further study as a photo-reductant to obtain hydrogen or hydrogenated compounds. Moreover, the use of CV+ may represent a facile procedure that can aid in the selection of new photocatalysts to be used in hydrogen production.
PB Taylor & Francis
SN 1536-383X
YR 2020
FD 2020
LK https://uvadoc.uva.es/handle/10324/49762
UL https://uvadoc.uva.es/handle/10324/49762
LA spa
NO Fullerenes, Nanotubes and Carbon Nanostructures, 2020, vol. 28 , p. 533-540.
DS UVaDOC
RD 28-abr-2024