Synthesis of Highly Monodispersed Mesoporous Tin Oxide Spheres
Synthesis of Highly Monodispersed Mesoporous Tin Oxide Spheres
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DOI：
10.1021/cm902247k
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发表时间：
2009-10
影响因子：
8.6
通讯作者：
N. Tatsuda;Tadashi Nakamura;D. Yamamoto;T. Yamazaki;T. Shimada;H. Inoue;K. Yano
中科院分区：
文献类型：
--
作者：
N. Tatsuda;Tadashi Nakamura;D. Yamamoto;T. Yamazaki;T. Shimada;H. Inoue;K. Yano
介绍了单分散介孔氧化锡球的合成和密装介孔氧化锡蛋白石的制备。利用以单分散介孔硅球为主体制备的单分散星爆碳球（MSCS）表面的氯化锡（II）氧化，纳米氧化锡晶体在MSCS的介孔中积累。煅烧MSCS/SnO2复合材料可制得由SnO2纳米晶组成的单分散介孔氧化锡球（MMTOS）。MSCS在煅烧过程中虽然失去星爆结构，但仍保持单分散球形。由于其均匀性，MMTOS可以自组装成密密麻麻的蛋白石，在可见光区域具有阻挡带。
Synthesis of monodispersed mesoporous tin oxide spheres and fabrication of close-packed mesoporous tin oxide opal is presented. By taking advantage of the oxidation of tin(II) chloride on the surface of monodispersed starburst carbon spheres (MSCS), which are produced using monodispersed mesoporous silica spheres as a host, nanocrystals of tin oxide accumulate into mesopores of MSCS. Calcination of the MSCS/SnO2 composite yields monodispersed mesoporous tin oxide spheres (MMTOS) that consist of SnO2 nanocrystals. Although the starburst structure of MSCS is lost during calcination, monodispersed spherical shape is retained. As a result of its uniformity, MMTOS can be self-assembled into a close-packed opal, which exhibits a stop band in the visible region.