2026-04-18T07:07:25Zhttps://recercat.cat/oai/request

oai:recercat.cat:2072/4298822024-10-31T02:23:28Zcom_2072_98col_2072_378192

00925njm 22002777a 4500 dc Epifani, Mauro author Kaciulis, Saulius author Mezzi, Alessio author Altamura, Davide author Giannini, Cinzia author Díaz, Raül author Force, Carmen author Genç, Aziz author Arbiol i Cobos, Jordi author Siciliano, Pietro author Comini, Elisabetta author Concina, Isabella author 2017 Ajuts: CSIC/CNR project 2010IT0001 (SYNCAMON), SOLAR project DM19447, VINNOVA Marie Curie Incoming Grant under "Light Energy" project. SnO nanocrystals were prepared by precipitation in dodecylamine at 100 °C, then they were reacted with vanadium chloromethoxide in oleic acid at 250 °C. The resulting materials were heat-treated at various temperatures up to 650 °C for thermal stabilization, chemical purification and for studying the overall structural transformations. From the crossed use of various characterization techniques, it emerged that the as-prepared materials were constituted by cassiterite SnO nanocrystals with a surface modified by isolated V(IV) oxide species. After heat-treatment at 400 °C, the SnO nanocrystals were wrapped by layers composed of vanadium oxide (IV-V mixed oxidation state) and carbon residuals. After heating at 500 °C, only SnO cassiterite nanocrystals were obtained, with a mean size of 2.8 nm and wrapped by only V O-like species. The samples heat-treated at 500 °C were tested as RhB photodegradation catalysts. At 10 M concentration, all RhB was degraded within 1 h of reaction, at a much faster rate than all pure SnO materials reported until now. Inorganic photocatalytic enhancement : Activated RhB Photodegradation by surface modification of SnO2 Nanocrystals with V2 O5-like species