| Full text | |
| Author(s): |
Perini, Joao Angelo Lima
;
Irikura, Kallyni
;
Torquato, Lilian D. Moura
;
Flor, Jader Barbosa da S.
;
Zanoni, Maria V. Boldrin
Total Authors: 5
|
| Document type: | Journal article |
| Source: | JOURNAL OF CATALYSIS; v. 405, p. 13-pg., 2022-01-01. |
| Abstract | |
This work describes the synergic effect of gold nanoparticles as co-catalyst on TiO2 nanotubes (TNT/AuNP) in aqueous medium containing the ionic liquid (IL) 1-Butyl-3-methylimidazolium tetrafluorobo-rate, in a pressurized photocatalytic reactor, as a good strategy to enhance CO2 conversion into value-added products. The surface plasmon resonance of the gold NPs improve the photoexcitation under vis-ible light and slightly change the TNT band gap from 3.2 to 2.9 eV. Methanol production using TNT/AuNP in aqueous medium containing 2% (v/v) BMIM-BF4, 1 g L-1 Na2SO3 as a hole scavenger, under 5 atm pressure and solar irradiation, produce up to 279.6 mM (mmol L-1) of methanol and 98.8 mM of methane, with the quantum yield of 1.12% at 440 nm. Isotope-labeled studies by GC/MS proved that (CO2)-C-13 is the source for photoproduction of (CH3OH)-C-13. The results indicate that the combination of the Au co-catalyst size, high pressure, and IL can provide efficient modulation of CO2 conversion. (C) 2021 Elsevier Inc. All rights reserved. (AU) | |
| FAPESP's process: | 17/12790-7 - Preparation and characterization of TiO2 nanostructured electrodes modified with metal organic frameworks (MOFs) for application in the preconcentration and reduction of CO2 |
| Grantee: | Kallyni Irikura |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |
| FAPESP's process: | 16/18057-7 - CO2 reduction aiming to generate value-added compounds by photocatalysis/photoelectrocatalysis using ionic liquid in a pressurized reactor |
| Grantee: | João Angelo de Lima Perini |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |
| FAPESP's process: | 14/50945-4 - INCT 2014: National Institute for Alternative Technologies of Detection, Toxicological Evaluation and Removal of Micropollutants and Radioactivies |
| Grantee: | Maria Valnice Boldrin |
| Support Opportunities: | Research Projects - Thematic Grants |
| FAPESP's process: | 19/00463-7 - Integrated and solar-driven bioelectrochemical systems for electricity and H2 production from co-digestion of crude glycerol and wastewater from citrus processing industry |
| Grantee: | Lilian Danielle de Moura Torquato |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |