dc.contributor | Universidade Estadual Paulista (Unesp) | |
dc.contributor | University of Peshawar | |
dc.contributor | Universidade de São Paulo (USP) | |
dc.date.accessioned | 2019-10-06T15:22:01Z | |
dc.date.accessioned | 2022-12-19T18:25:32Z | |
dc.date.available | 2019-10-06T15:22:01Z | |
dc.date.available | 2022-12-19T18:25:32Z | |
dc.date.created | 2019-10-06T15:22:01Z | |
dc.date.issued | 2019-04-01 | |
dc.identifier | Applied Catalysis B: Environmental, v. 243, p. 121-135, 2019. | |
dc.identifier | 0926-3373 | |
dc.identifier | http://hdl.handle.net/11449/186986 | |
dc.identifier | 10.1016/j.apcatb.2018.09.091 | |
dc.identifier | 2-s2.0-85055214518 | |
dc.identifier | 0253918004801724 | |
dc.identifier | 4303802780216754 | |
dc.identifier | 4692488228477706 | |
dc.identifier | 8468076627472175 | |
dc.identifier | 6446047463034654 | |
dc.identifier | 0000-0001-9931-690X | |
dc.identifier | 0000-0002-9810-7564 | |
dc.identifier | 0000-0002-9555-5046 | |
dc.identifier | 0000-0003-3286-9440 | |
dc.identifier.uri | https://repositorioslatinoamericanos.uchile.cl/handle/2250/5368024 | |
dc.description.abstract | The development of photocatalysts responsive towards a broader region of the solar (UV-to-NIR) light is important for efficient harvesting of sunlight for photochemical and photoelectrical applications. In this study, two photocatalytic systems (BV/LEDs and BV/UCPs where UCPs stands for NaYbF4:Tm3+ upconversion particles) based on bismuth vanadate (BV) are introduced for photocatalytic degradation of both organic dyes (crystal violet, CV) and pharmaceuticals (sulfathiazole, STZ) under a variety of photoactivation modes including low-power (1.26 W) LEDs and near infrared (NIR) irradiation as well as natural sunlight. The BV/LEDs system makes use of the perfect match between the emission profile of commercial blue LEDs (460 ± 10 nm) and absorption profile of BV (Eg = 2.6 eV) to effectively photodegrade pollutants. The BV/UCPs system, on the other hand, exploits the NIR-to-UV/visible upconverted light from UCPs to allow photodegradation of pollutants under NIR illumination. Moreover, we present a detailed study of the experimental parameters to obtain BV particles with tailored morphology (spherical, rod-like, hyperbranched), crystalline phase (monoclinic, tetragonal or heterojunction biphasic BV) and band gap energy (2.4–2.9 eV). Depending on the phase composition, a synergetic effect in photoactivity is observed in samples containing around 68% monoclinic and 30% tetragonal BV which is ascribed to the formation of monoclinic/tetragonal heterojunction. | |
dc.language | eng | |
dc.relation | Applied Catalysis B: Environmental | |
dc.rights | Acesso aberto | |
dc.source | Scopus | |
dc.subject | Bismuth vanadate | |
dc.subject | Heterojunction | |
dc.subject | Microwave-method | |
dc.subject | Upconversion | |
dc.subject | UV–vis-NIR photocatalysis | |
dc.title | Broad spectrum photocatalytic system based on BiVO4 and NaYbF4:Tm3+ upconversion particles for environmental remediation under UV-vis-NIR illumination | |
dc.type | Artículos de revistas | |