Hydrothermal synthesis of fine NaTaO3 powder as a highly efficient photocatalyst for overall water splitting

Yungi Lee, Tomoaki Watanabe, Tsuyoshi Takata, Michikazu Hara, Masahiro Yoshimura, Kazunari Domen

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A fine powder of sodium tantalum(V) trioxide as single-phase perovskite NaTaO3 has been successfully prepared by hydrothermal synthesis through the reaction of a sodium hydroxide solution and ditantalum pentaoxide powder at low temperature (373-473 K). The NaTaO3 powder has high photocatalytic activity for both H2 evolution (8.0 mmol h -1) and O2 evolution (4.1 mmol h-1), which is attributed to the high surface area, small particle size and high crystallinity of the powder catalyst.

Original languageEnglish
Pages (from-to)423-428
Number of pages6
JournalBulletin of the Chemical Society of Japan
Issue number2
Publication statusPublished - 26 Feb 2007

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