Synthesis of mesoporous ceria zirconia beads

被引：30

作者：

Deshpande, Atul S. ^{[1
]}

Niederberger, Markus ^{[1
]}

机构：

[1] Max Planck Inst Colloids & Interfaces, D-14424 Potsdam, Germany

来源：

MICROPOROUS AND MESOPOROUS MATERIALS | 2007年 / 101卷 / 03期

关键词：

ceria zirconia; nanoparticles; mesoporous; nanocasting; beads;

D O I：

10.1016/j.micromeso.2006.11.036

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

A complete range of mesoporous Ce(1-x)ZrxO(2) beads (x = 0-1) were synthesized by the nanocasting approach using porous polymeric beads as templates and crystalline Ce(1-x)Zr(x)O(2) nanoparticle sols as filling agent. The final beads obtained after calcination at 500 degrees C showed surface areas as large as 113 m(2) g(-1). According to scanning electron microscopy (SEM) and transmission electron microscopy (TEM) investigations the morphological features of the template beads are transferred to the oxide spheres. Wide-angle X-ray scattering (XRD) data and Raman studies of the samples calcined at 500 degrees C and 900 degrees C, respectively, indicate the compositional homogeneity as well as a systematic variation of the crystal properties. The ceria zirconia samples with intermediate compositions (x similar to 0.5) were more stable towards crystal growth and loss of surface area. (c) 2006 Elsevier Inc. All rights reserved.

引用

页码：413 / 418

页数：6

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