Meso/Macroporous Ceria with Enhanced Surface Oxygen Activity via Plant‐Leaf Mineralization
Meso/Macroporous Ceria with Enhanced Surface Oxygen Activity via Plant‐Leaf Mineralization
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DOI：
10.1111/j.1551-2916.2009.03361.x
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发表时间：
2010
影响因子：
3.9
通讯作者：
S. Chow;T. Fan;Jian Ding;Di Zhang
中科院分区：
文献类型：
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作者：
S. Chow;T. Fan;Jian Ding;Di Zhang
将植物叶模板(樟脑和普通夹竹桃)用硝酸铈前驱体矿化，得到生物形态的CERIA。它们是介孔的，同时继承了植物叶片模板的物种依赖的宏观特征，如大孔、通道和微纤维簇，具有中孔/大孔层次。程序升温还原测试表明，生物晶型CERIA的表面氧活性增强，表明其在中温(300°-600°C)储氧、催化、气敏等方面具有潜在的应用前景。
Biomorphic cerias were produced through mineralizing plant-leaf templates (camphor and common oleander) with a cerium nitrate precursor. They were mesoporous while inheriting the species-dependent macrofeatures of plant-leaf templates, like macropores, channels, and microfibrous clusters, to have a meso/macroporous hierarchy. Surface oxygen activity was enhanced for the biomorphic cerias, as was revealed by temperature-programmed reduction measurements, suggesting their potentials in mid-temperature (300°–600°C) applications of oxygen storage, catalysis, gas sensing, etc.