Preparations and optical properties of semiconductor clusters using nanospace of zeolite compounds

沸石化合物纳米空间半导体团簇的制备及其光学性质

• 批准号: 13650739
• 负责人: MIYAKE Michihiro
• 金额: $ 2.3万
• 依托单位: OKAYAMA UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2001
• 资助国家: 日本
• 起止时间: 2001 至 2002
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-13650739/
• 关键词: Zeolite; Cancrinite; Sodalite; Nanospace; Encapsulation; Semiconductor cluster; Photocatalyst; Gallophosphate molecular sieve; バンドギャップ; 硫化鉛; ガロリン酸塩モレキュラーシーブ

In the present research, the semiconductor clusters have been prepared in nanospace of cancrinite, which is a zeolite compound, and the resulting materials have been characterized. Furthermore, the synthetic conditions for other zeolite compounds available to hosts have been examined.In the former, lead and manganese ions were loaded in the nanospace of sulfide cancrinite and thiosulfate cancrinite hydrothermally synthesized, using the ion-exchange reaction, and the structures, optical properties and photocatalytic properties of the resulting materials were examined. Consequently, the following are found. (1) There existed cations and anions in the same nanospace of lead-exchanged cancrinite, and the plains at the foot of absorption peak assigned as corresponding to electron transition between cation and anion reached to visible light region. (2) The new absorption peak of manganese-exchanged cancrinite appeared in visible light region. (3) All the resulting materials showed the photoc … More atalytic activities for hydrogen evolution from a methanol aqueous solution under visible light irradiation, although amounts of hydrogen evolution were small. Especially, manganese-exchanged thiosulfate cancrite showed higher photocatalytic activity than the others.In the latter, sulfide sodalite, which has larger nanospace than sulfide cancrinite, was synthesized, and the photocatalytic activity of lead-exchanged sulfide sodalite was compared with that of lead-exchanged sulfide cancrinite. The results revealed that lead-exchanged sulfide sodalite showed higher photocatalytic activity than lead-exchanged sulfide cancrinte under visible light irradiation. Furthermore, the synthetic conditions for transition metal-doped gallophosphate molecular sieve, which has much larger nanospace than cancrinite and sodalite, were investigated. From the results, it was found that zinc-doped gallophosphate molecular sieve with good crystallinity was successfully produced by adding a small amount of zinc oxide to the starting gel. Less

本研究在沸石化合物canccancite的纳米空间中制备了半导体簇，并对所制备的材料进行了表征。此外，还研究了其他沸石类化合物的合成条件。前者采用离子交换反应将铅和锰离子负载在硫化物和硫代硫酸盐canccancite的纳米空间中，并对所得材料的结构、光学性能和光催化性能进行了表征。因此，得到以下结果。(1)铅交换的癌质岩在同一纳米空间内存在阳离子和阴离子，且吸收峰底部的平原对应于正阴离子之间的电子跃迁到达可见光区。(2)锰交换癌质岩在可见光区出现新的吸收峰。(3)所得材料在可见光照射下对甲醇水溶液析氢具有较强的催化活性，但析氢量较小。其中，锰交换硫代硫酸盐的光催化活性较高。后者合成了比硫化氢质的纳米空间更大的硫化氢钠石，并比较了铅交换硫化氢钠石与铅交换硫化氢质的光催化活性。结果表明，在可见光照射下，铅交换硫化物钠石光催化活性高于铅交换硫化物钠石光催化活性。此外，还研究了纳米空间远大于canccancite和sodalite的过渡金属掺杂gallophosphate分子筛的合成条件。结果发现，通过在起始凝胶中加入少量氧化锌，成功制备出结晶度良好的锌掺杂磷酸氢磷分子筛。少

项目成果

M. Yoshino, M. Matsuda and M. Miyake: "Preparation and characterization of zinc-doped gallophosphate molecular sieve"Journal of Materials Research. 17. 2672-2678 (2002)

M. Yoshino、M. Matsuda 和 M. Miyake：“锌掺杂没食子磷酸盐分子筛的制备和表征”材料研究杂志。

M.Yoshino: "Effect of transition metal doping on crystallization of cloverite"Solid State Ionics. 151. 269-274 (2002)

M.Yoshino：“过渡金属掺杂对三绿石结晶的影响”固态离子学。

M.Yoshino: "Preparation and characterization of zinc-doped gallophosphate molecular sieve"Journal of Materials Research. 17. 2672-2678 (2002)

M.Yoshino：“锌掺杂没食子磷酸盐分子筛的制备和表征”材料研究杂志。