Engineering Nonspherical Hollow Structures with Complex Interiors by Template-Engaged Redox Etching

详细信息    查看全文

• 作者：Zhiyu Wang ; Deyan Luan ; Chang Ming Li ; Fabing Su ; Srinivasan Madhavi ; Freddy Yin Chiang Boey ; Xiong Wen Lou
• 刊名：Journal of the American Chemical Society
• 出版年：2010
• 出版时间：November 17, 2010
• 年：2010
• 卷：132
• 期：45
• 页码：16271-16277
• 全文大小：415K
• 年卷期：v.132,no.45(November 17, 2010)
• ISSN：1520-5126

文摘

Despite the significant advancement in making hollow structures, one unsolved challenge in the field is how to engineer hollow structures with specific shapes, tunable compositions, and desirable interior structures. In particular, top-down engineering the interiors inside preformed hollow structures is still a daunting task. In this work, we demonstrate a facile approach for the preparation of a variety of uniform hollow structures, including Cu₂O@Fe(OH)_x nanorattles and Fe(OH)_x cages with various shapes and dimensions by template-engaged redox etching of shape-controlled Cu₂O crystals. The composition can be readily modulated at different structural levels to generate other interesting structures such as Cu₂O@Fe₂O₃ and Cu@Fe₃O₄ rattles, as well as Fe₂O₃ and Fe₃O₄ cages. More remarkably, this strategy enables top-down engineering the interiors of hollow structures as demonstrated by the fabrication of double-walled nanorattles and nanoboxes, and even box-in-box structures. In addition, this approach is also applied to form Au and MnO_x based hollow structures.