Journal
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
Volume 69, Issue 10, Pages 2487-2491Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.jpcs.2008.05.001
Keywords
Oxides; Chemical synthesis; X-ray diffraction; Electron structure
Funding
- Global Environment Research Fund
- Ministry of the Environment of the Japanese Government
- National Natural Science Foundation of China [20528302]
- National Basic Research Program of China [2007CB613301, 2007CB613305]
- Jiangsu Provincial Natural Science Foundation [BK2006718, BK2006127]
- Jiangsu Provincial Talent Scholars Program
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We prepared NaNbO3 by several methods, namely solid-state reaction (SSR), hydrothermal (HT) and polymerized complex (PC) methods, and investigated the relationships between the photocatalytic activity and the particle size and morphology. The photocatalytic activity was evaluated by H-2 evolution from an aqueous methanol solution and pure water splitting in the presence of the Pt(0.5 wt%)/NaNbO3 and RuO2(1.25 wt%)/NaNbO3, respectively. It is found that the sample prepared by PC with smallest particles exhibits the highest photocatalytic activity in both reactions. Moreover, the HT sample with the cubic and rectangular shape also shows the enhanced photocatalytic activity for H2 evolution from an aqueous methanol solution in comparison with that of the sample prepared by SSR. (C) 2008 Elsevier Ltd. All rights reserved.
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