材料科学
八面体
成核
纳米棒
纳米结构
化学工程
多孔性
纳米技术
离子
纳米颗粒
复合材料
化学
有机化学
工程类
作者
Wenxiang Guo,Weiwei Sun,Li‐Ping Lv,Shaofeng Kong,Yong Wang
出处
期刊:ACS Nano
[American Chemical Society]
日期:2017-03-28
卷期号:11 (4): 4198-4205
被引量:271
标识
DOI:10.1021/acsnano.7b01152
摘要
The metal-organic-framework (MOF) approach is demonstrated as an effective strategy for the morphology evolution control of MIL-53(Fe) with assistance of microwave irradiation. Owing to the homogeneous nucleation offered by microwave irradiation and confined porosity and skeleton by MOF templates, various porous Fe2O3 nanostructures including spindle, concave octahedron, solid octahedron, yolk-shell octahedron, and nanorod with porosity control are derived by simply adjusting the irradiation time. The formation mechanism for the MOF precursors and their derived iron oxides with morphology control is investigated. The main product of the mesoporous yolk-shell octahedron-in-octahedron Fe2O3 nanostructure is also found to be a promising anode material for lithium-ion batteries due to its excellent Li-storage performance. It can deliver a reversible larger-than-theoretical capacity of 1176 mAh g-1 after 200 cycles at 100 mA g-1 and good high-rate performance (744 mAh g-1 after 500 cycles at 1 A g-1).
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