Investigation on nitridation processes of Sr2Nb2O7 and SrNbO3 to SrNbO2N for photoelectrochemical water splitting
| Autor: | Masanori Kodera, Kazunari Domen, Yosuke Moriya, Tsutomu Minegishi, Takashi Hisatomi, Masao Katayama |
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| Rok vydání: | 2018 |
| Předmět: |
Multidisciplinary
Materials science lcsh:R Oxide lcsh:Medicine chemistry.chemical_element 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Lattice expansion 01 natural sciences Oxygen Nitrogen 0104 chemical sciences chemistry.chemical_compound chemistry Chemical engineering Water splitting lcsh:Q lcsh:Science 0210 nano-technology Porosity Nitriding Shrinkage |
| Zdroj: | Scientific Reports, Vol 8, Iss 1, Pp 1-10 (2018) |
| ISSN: | 2045-2322 |
| DOI: | 10.1038/s41598-018-34184-2 |
| Popis: | The processes involved in the nitridation of Sr2Nb2O7 and SrNbO3 to SrNbO2N were assessed by varying the nitridation time, and the related effects on the physical and photoelectrochemical properties of the nitrided products were investigated. In the case of the layered perovskite-type oxide Sr2Nb2O7, the introduction of nitrogen and the extraction of oxygen took place concurrently, leading to lattice shrinkage and a porous structure. In contrast, during nitridation of the perovskite-type oxide SrNbO3, nitrogen was initially introduced without any loss of oxygen, which caused phase separation as a result of a lattice expansion and a charge compensation. The photoelectrochemical properties of obtained SrNbO2N under simulated sunlight were found to vary with the oxide precursor used and with the nitridation process. |
| Databáze: | OpenAIRE |
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