Synthesis, characterization, and photocatalytic activity of MCM-41 and MCM-48 impregnated with CeO2 nanoparticles

被引：0

作者：

Pouretedal, Hamid Reza ^{[1
]}

Ahmadi, Mina ^{[2
]}

机构：

[1] Malek Ashtar Univ Technol, Fac Appl Chem, Shahin Shahr 83145115, Iran

[2] Islamic Azad Univ, Dept Chem, Shahreza Branch, Shahreza, Iran

来源：

INTERNATIONAL NANO LETTERS | 2012年 / 2卷 / 01期

关键词：

Photocatalytic; MCM-41; MCM-48; CeO2; Congo red;

D O I：

10.1186/2228-5326-2-10

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

MCM-41/CeO2 and MCM-48/CeO2 were synthesized by direct and indirect methods in solvent media and by grinding method in a solvent-free media. The materials prepared by grinding method are characterized by X-ray diffraction, infrared spectrum analysis, and N-2 adsorption and desorption. Surface areas and pore size of MCM-48 /CeO2 were obtained with values of 680.9 m(2) center dot g(-1) and 1.64 nm, respectively, by BET method. The results showed that CeO2 nanoparticles were introduced into MCM-41 and MCM-48, and there was formation of CeO2 crystallites as secondary phase in the extra framework of MCM-41 and MCM-48. MCM-41/CeO2 and MCM-48/CeO2 materials are used as photocatalysts in degradation of Congo red as a dye pollutant. The MCM-41/CeO2 and MCM-48/CeO2 prepared by grinding method showed the higher photoreactivity with 97.6 % and 93.1 %, respectively, of degradation of Congo red. The higher photoreactivity is due to the complete incorporation of cerium ions in mesoporous material of MCMs in a solvent-free media.

引用

页数：8

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