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LaCoO 3 acting as an efficient and robust catalyst for photocatalytic water oxidation with persulfate

Title
LaCoO 3 acting as an efficient and robust catalyst for photocatalytic water oxidation with persulfate
Authors
Yamada Y.Yano K.Hong D.Fukuzumi S.
Ewha Authors
Shunichi Fukuzumi
SCOPUS Author ID
Shunichi Fukuzumiscopus
Issue Date
2012
Journal Title
Physical Chemistry Chemical Physics
ISSN
1463-9076JCR Link
Citation
vol. 14, no. 16, pp. 5753 - 5760
Indexed
SCI; SCIE; SCOPUS WOS scopus
Abstract
Cobalt-containing metal oxides [perovskites (LaCoO 3, NdCoO 3, YCoO 3, La 0.7Sr 0.3CoO 3), spinel (Co 3O 4) and wolframite (CoWO 4)] have been examined as catalysts for photocatalytic water oxidation with Na 2S 2O 8 and [Ru(bpy) 3] 2+ as an electron acceptor and a photosensitizer, respectively. Catalysts with the perovskite structure exhibited higher catalytic activity as compared with the catalysts with the spinel and wolframite structures. LaCoO 3, which stabilizes Co(iii) species in the perovskite structure, exhibited the highest catalytic activity in the photocatalytic water oxidation compared with CoWO 4, Co 3O 4 and La 0.7Sr 0.3CoO 3 which contain Co(ii) or Co(iv) species in the matrices. The high catalytic reactivity of LaCoO 3 possessing perovskite structure was maintained in NdCoO 3 and YCoO 3 which exclusively contain Co(iii) species. Thus, the catalytic activity of Co ions can be controlled by the additional metal ions, which leads to development of highly reactive and robust catalysts for the photocatalytic water oxidation. © the Owner Societies 2012.
DOI
10.1039/c2cp00022a
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자연과학대학 > 화학·나노과학전공 > Journal papers
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