Sulfate-Ion Pillared Layered Hydroxide of Eu<sub>2</sub>(OH)<sub>4</sub>SO<sub>4</sub>·<i>n</i>H<sub>2</sub>O: Controlled Hydrothermal Processing, Thermal Decomposition, and Photoluminescence

DOI PDF 参考文献22件

書誌事項

公開日
2014-11
資源種別
journal article
権利情報
  • https://www.scientific.net/PolicyAndEthics/PublishingPolicies
  • https://www.scientific.net/license/TDM_Licenser.pdf
DOI
  • 10.4028/www.scientific.net/kem.633.98
公開者
Trans Tech Publications, Ltd.

説明

<jats:p>Sulfate-ion pillared layered hydroxide of Eu<jats:sub>2</jats:sub>(OH)<jats:sub>4</jats:sub>SO<jats:sub>4</jats:sub>·<jats:italic>n</jats:italic>H<jats:sub>2</jats:sub>O (<jats:italic>n</jats:italic>~2, SO<jats:sub>4</jats:sub><jats:sup>2-</jats:sup>-LEuH) was synthesized through controlled hydrothermal reaction, and the phase evolution of which upon calcination in the air and hydrogen was studied in detail. It was found that annealing in the air produced orthorhombic Eu<jats:sub>2</jats:sub>O<jats:sub>2</jats:sub>SO<jats:sub>4</jats:sub> in the temperature range of 300-1000 °C while in flowing H<jats:sub>2</jats:sub> hexagonal Eu<jats:sub>2</jats:sub>O<jats:sub>2</jats:sub>S was resulted in the 600-1000 °C range. Strong red emissions were found at 621 nm for the SO<jats:sub>4</jats:sub><jats:sup>2-</jats:sup>-LEuH and 627 nm for Eu<jats:sub>2</jats:sub>O<jats:sub>2</jats:sub>S under excitation at 396 nm (the <jats:sup>7</jats:sup>F<jats:sub>0</jats:sub>-<jats:sup>5</jats:sup>L<jats:sub>6 </jats:sub>transition of Eu<jats:sup>3+</jats:sup>). Improved luminescence intensity was also observed for the Eu<jats:sub>2</jats:sub>O<jats:sub>2</jats:sub>S powder calcined at a higher temperature.</jats:p>

収録刊行物

参考文献 (22)*注記

もっと見る

関連プロジェクト

もっと見る

詳細情報 詳細情報について

問題の指摘

ページトップへ