Multishelled Metal Oxide Hollow Spheres: Easy Synthesis and Formation Mechanism
Multishelled Metal Oxide Hollow Spheres: Easy Synthesis and Formation Mechanism
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DOI：
10.1002/chem.201504358
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发表时间：
2016-06-20
影响因子：
4.3
通讯作者：
Wang, Liuding
中科院分区：
文献类型：
--
作者：
Wu, Hongjing;Wu, Guanglei;Wang, Liuding
通过简单的逐壳自组装方法，通过控制热处理、葡萄糖/金属盐摩尔比和水热反应时间，可以调节NiO、Co3O4、ZnO和Au@NiO中空球的大小、厚度和壳数，得到了均匀的多层NiO、Co3O4、ZnO和Au@NiO中空球。这些发现进一步发展了多壳中空结构的合成方法，并可能为更深入地理解逐壳自组装的机制打开新的机会。此外，双壳NiO中空球对甲基橙的光催化降解活性高于其形态对应的光催化活性。
Uniform multishelled NiO, Co3O4, ZnO, and Au@NiO hollow spheres were synthesized (NiO and Co3O4 hollow spheres for the first time) by a simple shell-by-shell self-assembly allowing for tuning of the the size, thickness and shell numbers by controlling the heat treatment, glucose/metal salt molar ratio, and hydrothermal reaction time. These findings further the development of synthetic methodologies for multishelled hollow structures and could open up new opportunities for deeper understanding of the mechanisms of shell-by-shell self-assembly. Moreover, the double-shelled NiO hollow sphere exhibits a higher photocatalytic activity for degradation of methyl orange than its morphological counterparts.