Nanosized metal oxides in the mesopores of MCM-41 and MCM-48 silicates

被引：100

作者：

Dapurkar, SE ^{[1
]}

Badamali, SK ^{[1
]}

Selvam, P ^{[1
]}

机构：

[1] Indian Inst Technol, Dept Chem, Bombay 400076, Maharashtra, India

来源：

CATALYSIS TODAY | 2001年 / 68卷 / 1-3期

关键词：

nanosized metal oxides; mesoporous materials; MCM-41; MCM-48; host-guest chemistry;

D O I：

10.1016/S0920-5861(01)00323-6

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

The present work describes the preparation and characterization of nanosized metal oxide particles (Fe2O3, ZnO and PbO) inside the mesopore channels of MCM-41 and MCM-48 silicate molecular sieves. The encapsulation of the metal oxides was carried out at room temperature by the incipient wetness method. Diffuse reflectance ultraviolet-visible spectroscopic studies showed a significant shift in the absorption band for the entrapped metal oxides as compared to the corresponding bulk oxides. Thus, confirming the quantum confinement of the incorporated nanoparticles in MCM-41 and MCM-48. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：63 / 68

页数：6

共 34 条

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