Enhancement of Photocatalytic Water Oxidation by the Morphological Control of LaTiO<sub>2</sub>N and Cobalt Oxide Catalysts
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- Alexandra E. Maegli
- Empa - Swiss Federal Laboratories for Materials Science and Technology, Solid State Chemistry and Catalysis, Ueberlandstr. 129, CH-8600 Duebendorf, Switzerland
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- Simone Pokrant
- Empa - Swiss Federal Laboratories for Materials Science and Technology, Solid State Chemistry and Catalysis, Ueberlandstr. 129, CH-8600 Duebendorf, Switzerland
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- Takashi Hisatomi
- The University of Tokyo, Department of Chemical System Engineering, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
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- Matthias Trottmann
- Empa - Swiss Federal Laboratories for Materials Science and Technology, Solid State Chemistry and Catalysis, Ueberlandstr. 129, CH-8600 Duebendorf, Switzerland
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- Kazunari Domen
- The University of Tokyo, Department of Chemical System Engineering, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
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- Anke Weidenkaff
- Empa - Swiss Federal Laboratories for Materials Science and Technology, Solid State Chemistry and Catalysis, Ueberlandstr. 129, CH-8600 Duebendorf, Switzerland
書誌事項
- 公開日
- 2013-11-18
- 資源種別
- journal article
- DOI
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- 10.1021/jp4084162
- 公開者
- American Chemical Society (ACS)
この論文をさがす
説明
Controlled morphological and structural variations of LaTiO2N and CoOx nanoparticles loaded as a cocatalyst increased the photocatalytic O2 evolution. Four different LaTiO2N samples were prepared from two varied La2Ti2O7 precursors by thermal ammonolysis with and without flux. The most effective transformation from La2Ti2O7 into LaTiO2N in terms of crystallinity and nitrogen contents was obtained in the following two cases: flux-assisted ammonolysis of La2Ti2O7 characterized by a comparatively small particle size and a large surface area and ammonolysis without flux of highly crystalline La2Ti2O7. In both cases, high activity for O2 evolution under visible-light illumination (λ ≥ 420 nm) (∼50 μmol h–1) was obtained. Loading LaTiO2N with CoOx enhanced the photocatalytic activity for O2 evolution, although the effect of CoOx depended on the morphologies of LaTiO2N as a support. The promotional effect was most pronounced for LaTiO2N with a skeletal morphology, because such LaTiO2N contain most unsaturated bo...
収録刊行物
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- The Journal of Physical Chemistry C
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The Journal of Physical Chemistry C 118 (30), 16344-16351, 2013-11-18
American Chemical Society (ACS)
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詳細情報 詳細情報について
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- CRID
- 1360004233235733248
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- ISSN
- 19327455
- 19327447
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- 資料種別
- journal article
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- データソース種別
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- Crossref
- KAKEN
- OpenAIRE