Scanning transmission X-ray spectromicroscopy: a nanotool to probe hematite nanorods for solar water splitting
| Autor: | Stefan Stanescu, Dana Stanescu, Adam Hitchcock |
|---|---|
| Přispěvatelé: | Synchrotron SOLEIL (SSOLEIL), Centre National de la Recherche Scientifique (CNRS), Service de physique de l'état condensé (SPEC - UMR3680), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Laboratoire Nano-Magnétisme et Oxydes (LNO), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Institut Rayonnement Matière de Saclay (IRAMIS), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Department of Chemistry & Chemical Biology, McMaster University, Hamilton, ON L8S 4M1 |
| Rok vydání: | 2023 |
| Předmět: |
[SPI]Engineering Sciences [physics]
Radiation STXM spectromicroscopy photoanode [CHIM.MATE]Chemical Sciences/Material chemistry Physical and Theoretical Chemistry Condensed Matter Physics water splitting hematite Spectroscopy Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials |
| Zdroj: | Journal of Electron Spectroscopy and Related Phenomena Journal of Electron Spectroscopy and Related Phenomena, 2023, pp.147334. ⟨10.1016/j.elspec.2023.147334⟩ |
| ISSN: | 0368-2048 |
| DOI: | 10.26434/chemrxiv-2023-sgjbr-v2 |
| Popis: | International audience; We report a scanning transmission X-ray microscopy (STXM) study of hematite nanorods, prototypical photoanode used in solar water splitting. Hematite nanorods were obtained by hydrothermal growth from aqueous solutions using FeCl3 as precursor. Potentials for onset of water splitting are smaller using this synthesis method, compared to values reported for hematite photoanodes obtained by epitaxial growth. STXM revealed the presence of a hexahydrate iron chloride phase at the surface of the nanorods, which is linked to the low onset potential values. We detail the quantification approach that revealed the specific microstructure of individual hematite nanorods. |
| Databáze: | OpenAIRE |
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