Needlelike Crystal Growth and Anisotropic Photochemical Reactivity of Ta3N5 Synthesized in Vacuo

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• 作者：Daling Lu ; Michikazu Hara ; Takashi Hisatomi ; Tsuyoshi Takata ; Kazunari Domen
• 刊名：Journal of Physical Chemistry C
• 出版年：2009
• 出版时间：October 1, 2009
• 年：2009
• 卷：113
• 期：39
• 页码：17151-17155
• 全文大小：256K
• 年卷期：v.113,no.39(October 1, 2009)
• ISSN：1932-7455

文摘

A new method is introduced to synthesize Ta₃N₅ crystal by reaction of TaCl₅ and NH₄Cl powders in vacuo at 850 °C. The synthesized Ta₃N₅ has a needlelike morphology with preferential growth in the [100] direction. It is possible that adsorption of chloride on the surfaces of the growing crystal inhibits growth in all but this preferential direction. A low photochemical reactivity for water splitting on the needlelike Ta₃N₅ suggests photochemical reductive sites on (100) surfaces of the Ta₃N₅ crystal.