Proceedings of the Korean Powder Metallurgy Institute Conference (한국분말야금학회:학술대회논문집)

The Korean Powder Metallurgy & Materials Institute (한국분말재료학회 (*구 분말야금학회))
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Preparati on and Characterization of $LnTaO_4$ (Ln = La, Nd, Sm, Dy, Er and Tm)

  • Fujita, Atsushi (Dept. of Materials Chemistry, School of High-Technology for Human Welfare, Tokai University) ;
  • Matsushita, Hiroaki (Dept. of Information and Communication Technology, School of High-Technology for Human Welfare, Tokai University) ;
  • Katsui, Akinori (Dept. of Materials Chemistry, School of High-Technology for Human Welfare, Tokai University)
  • Published : 2006.09.24
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Abstract

Lanthanide tantalite $LnTaO_4$ (Ln= La, Nd, Sm, Dy, Er and Tm) was synthesized by a solid state reaction between mixed powders of $Ln_2O_3$ and $Ta_2O_5$. The single-phase $LnTaO_4$ was prepared by sintering at temperatures of 1423-1673 K in air. The SEM observation showed that the particles were provided with the growth steps and the depeloped facets. The photocatalytic activity for water splitting of $LnTaO_4$ prepared was measured under UV light irradiation. The activity obtained was higher than that previously reported. These results suggested the crystallinity of $LnTaO_4$ photocatalysts correlates closely with the efficiency of water splitting.

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