Synthesis and characterization of LaNbO4:Eu3+, Bi3+ doped matrix obtained by spray...
| Full text | |
| Author(s): |
Paulino Ribeiro, Francisco Wirley
;
Gromboni, Murilo Fernando
;
Marken, Frank
;
Mascaro, Lucia H.
Total Authors: 4
|
| Document type: | Journal article |
| Source: | INTERNATIONAL JOURNAL OF HYDROGEN ENERGY; v. 41, n. 39, p. 17380-17389, OCT 19 2016. |
| Web of Science Citations: | 2 |
| Abstract | |
BiVO4 has been receiving attention for applications in photoelectrochemical devices. This paper describes the effect of different alcohol solvents (ethanol, ethylene-glycol, PEG300 and PEG 400) on the morphology, crystal growth, crystalline size, thickness, photophysical and photoelectrochemical properties of BiVO4 photoanodes prepared from a suitable, simple and inexpensive one-step process. All samples exhibited good crystallinity with the monoclinic phase dominating and with suitable bandgap for visible light harvesting; but the morphology, thickness, and resulting photocurrents varied broadly. The unmodified BiVO4 photoanode prepared with PEG 300, gave a particularly good photocurrent of 0.77 mA cm(-2) at 1.23 V vs RHE under illumination of 100 mW cm(-2). In this case, a higher value for the ratio between the intensities of the XRD peaks, (040)/(121), was verified, as well as smaller crystallite size. Considering the type of solvent, the BiVO4 photoanode prepared with PEG 300 exhibited a more intense photocurrent. The optimization of the solvent employed in the synthesis of the BiVO4 photoanode is a crucial step in the development of a photoelectrochemical device based on this material. (C) 2016 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved. (AU) | |
| FAPESP's process: | 14/06704-2 - Synthesis and characterization of bismuth vanadate for water splitting and degradation of the organic molecules |
| Grantee: | Francisco Wirley Paulino Ribeiro |
| Support type: | Scholarships in Brazil - Post-Doctorate |
| FAPESP's process: | 08/57872-1 - National Institute for Materials Science in Nanotechnology |
| Grantee: | Elson Longo da Silva |
| Support type: | Research Projects - Thematic Grants |
| FAPESP's process: | 13/07296-2 - CDMF - Center for the Development of Functional Materials |
| Grantee: | Elson Longo da Silva |
| Support type: | Research Grants - Research, Innovation and Dissemination Centers - RIDC |