Well-defined metal-organic framework hollow nanocages.
Well-defined metal-organic framework hollow nanocages.
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DOI：
10.1002/anie.201308589
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发表时间：
2014-01
影响因子：
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通讯作者：
Zhicheng Zhang;Yifeng Chen;Xiaobin Xu;Jing-chao Zhang;Guolei Xiang;Wei He;Xun Wang
中科院分区：
文献类型：
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作者：
Zhicheng Zhang;Yifeng Chen;Xiaobin Xu;Jing-chao Zhang;Guolei Xiang;Wei He;Xun Wang
金属有机骨架(MOF)在许多重要的应用领域显示出巨大的潜力。为了提高材料的固有性能，赋予材料多功能，合理设计和合成具有纳米级孔隙率和中空特征的MOF材料是人们迫切需要的，也是一个巨大的挑战。在本工作中，我们报道了一种简单的溶剂热法，在没有任何辅助模板的情况下，形成了一系列定义良好的MOF(MOF-5，Fe(II)-MOF-5，Fe(III)-MOF-5)中空纳米笼。表面能驱动的机制可能是中空纳米笼形成的原因。将预合成的聚乙烯吡咯烷酮(PVP)包覆的贵金属纳米粒子加入到MOF中空纳米笼的合成体系中，得到蛋黄壳型贵金属@MOF纳米结构。目前制备空心和蛋黄壳纳米结构的策略有望为开发一类新型的无机-有机杂化功能纳米材料开辟令人兴奋的机会。
Metal-organic frameworks (MOFs) have demonstrated great potentials in a variety of important applications. To enhance the inherent properties and endow materials with multifunctionality, the rational design and synthesis of MOFs with nanoscale porosity and hollow feature is highly desired and remains a great challenge. In this work, the formation of a series of well-defined MOF (MOF-5, Fe(II) -MOF-5, Fe(III) -MOF-5) hollow nanocages by a facile solvothermal method, without any additional supporting template is reported. A surface-energy-driven mechanism may be responsible for the formation of hollow nanocages. The addition of pre-synthesized poly(vinylpyrrolidone)- (PVP) capped noble-metal nanoparticles into the synthetic system of MOF hollow nanocages yields the yolk-shell noble metal@MOF nanostructures. The present strategy to fabricate hollow and yolk-shell nanostructures is expected to open up exciting opportunities for developing a novel class of inorganic-organic hybrid functional nanomaterials.