| Journal: | Anais da Academia Brasileira de Ciencias |
| Database: | PERIÓDICA |
| System number: | 000418350 |
| ISSN: | 0001-3765 |
| Authors: | Souza, Flavio L1 |
| Institutions: | 1Universidade Federal do ABC, Laboratorio de Energia Alternativa e Nanomateriais, Santo Andre, Sao Paulo. Brasil |
| Year: | 2018 |
| Season: | Abr |
| Volumen: | 90 |
| Pages: | 745-762 |
| Country: | Brasil |
| Language: | Inglés |
| Document type: | Artículo |
| Approach: | Analítico |
| English abstract | The efficiency of nanostructures for photoelectrochemical water-splitting is fundamentally governed by the capability of the surface to sustain the reaction without electron trapping or recombination by photogenerated holes. This brief review will summarize the latest progress on hematite, designed with columnar morphology via chemical synthesis, for photoelectrochemical cell application. The columnar morphology efficiently minimizes the number of defects, grain boundaries, and surface traps normally present on the planar morphology. The major drawback related to hole diffusion through the solid/liquid interface was addressed by using high annealing temperature combined with dopant addition. A critical view and depth of understanding of these two parameters were discussed focusing on the molecular oxygen evolution mechanism from the sunlight-driven water oxidation reaction |
| Disciplines: | Geociencias, Química |
| Keyword: | Ciencias de la atmósfera, Fisicoquímica y química teórica, Termodinámica y física estadística, Luz solar, Irradiación solar, Oxidación del agua, Fotoanodo, Hematita, Morfología columnar |
| Keyword: | Atmospheric sciences, Physical and theoretical chemistry, Thermodynamics and statistical physics, Sunlight, Solar irradiation, Water oxidation, Photoanode, Hematite, Columnar morphology |
| Full text: | Texto completo (Ver PDF) |
