Fabrication of Mesoporous Co3O4 from LP-FDU-12 via Nanocasting Route and Effect of Wall/Pore Size on Their Magnetic Properties

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• 作者：Hongxiao Jin ; Xiaojian Gu ; Bo Hong ; Langsheng Lin ; Chiya Wang ; Dingfeng Jin ; Xiaoling Peng ; Xinqing Wang ; Hongliang Ge
• 刊名：The Journal of Physical Chemistry C
• 出版年：2012
• 出版时间：June 21, 2012
• 年：2012
• 卷：116
• 期：24
• 页码：13374-13381
• 全文大小：429K
• 年卷期：v.116,no.24(June 21, 2012)
• ISSN：1932-7455

文摘

Highly ordered mesoporous Co₃O₄ nanostructures were prepared using LP-FDU-12 as hard templates. By changing the hydrothermal temperature or by the acid treatment of the LP-FDU-12 template, Co₃O₄ replicas with different cell parameters and wall thicknesses have been obtained. The structure and textural characteristics of both LP-FDU-12 and Co₃O₄ replicas were investigated by X-ray diffraction, transmission electron microscopy, and N₂ adsorption鈥揹esorption isotherm analysis. The cell parameter and wall thickness of a mesoporous Co₃O₄ have been varied systematically within the ranges 30.4鈥?3.9 and 24.8鈥?8.2 nm, respectively, and the materials exhibit surface areas in the 29.6鈥?2.9 m² g^鈥? range, while preserving a highly ordered 3D pore structure and highly crystalline walls. Most importantly, magnetic studies show that the factors which affect the magnetic behavior in the Co₃O₄ nanosphere system are not only the sphere size but also the space-filled parameter at the nanoscale.