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

在本研究中，我们在沸石分子筛的纳米空间内制备了半导体团簇，并对其进行了表征。此外，还考察了其他沸石化合物的合成条件，前者将铅和锰离子负载到硫化物沸石和硫代硫酸盐沸石的纳米空间中，通过离子交换反应合成了硫化物沸石和硫代硫酸盐沸石，并对所得材料的结构、光学性质和光催化性能进行了测试。因此，发现了以下内容。(1)铅交换沸石在同一纳米空间内同时存在阳离子和阴离子，对应于阴阳离子之间的电子跃迁的吸收峰脚下的平面到达可见光区域。(2)在可见光区出现了新的锰离子交换组的吸收峰。(3)所有合成的材料都显示了照片的…在可见光照射下，甲醇水溶液的析氢催化活性更高，尽管析氢量很小。在后者中，合成了比硫化物钠沸石具有更大纳米空间的硫化物钠钠石，并比较了铅交换硫化物钠钠石和铅交换硫化物钠沸石的光催化活性。结果表明，在可见光照射下，铅交换硫化物钠钠石的光催化活性高于铅交换硫化物钠沸石。此外，还研究了过渡金属掺杂磷酸盐分子筛的合成条件，该分子筛的纳米尺寸远大于沸石和方钠沸石。结果表明，在起始凝胶中加入少量氧化锌，可以成功地制备出结晶度较好的锌掺杂磷酸盐分子筛。较少

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