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MOF晶體薄膜材料的制備及應用

Fabrication methods and applications of metal-organic framework thin films

  • 摘要: 作為納米技術領域的一種新材料, 金屬-有機骨架(metal-organic framework, MOF)薄膜材料(也稱為SURMOFs)獲得了越來越多研究者的關注.多種合成方法的不斷提出, 為大量合成膜厚度、均勻性、形態、甚至維度均可控的MOF薄膜材料提供了可能性, 并為薄膜材料在更多領域中的應用提供了機會.本文首先介紹了MOF薄膜材料基于液相或真空的各種合成方法及其適用范圍, 其中, 獲得高質量薄膜的最有效方法之一是在基底材料上沉積自組裝單層(SAMs), 進而誘導MOF薄膜的成核及生長.其次, 總結了近年來MOF薄膜材料在分離、催化、傳感等領域的研究進展, 以及為滿足環境可持續發展和對清潔能源的需求, 新發展起來的在光催化、儲能、光伏以及制備各種電子器件領域的應用.在此基礎上, 討論了限制MOF薄膜實際應用的因素(例如薄膜生長機制需要更深入的研究、薄膜質量及薄膜熱電性能等有待進一步提高等), 對相關領域未來的研究方向進行了展望, 以期為MOF薄膜材料進一步的研究發展提供理論參考.

     

    Abstract: As one of the most promising nanomaterials, metal-organic framework (MOF) thin films (also known as surfacesupported MOF thin films, SURMOFs) have attracted much attention in recent years. The development of various synthetic methods makes it possible to obtain MOF thin films with controlled thickness, uniformity, morphology, and even dimensions, providing tremendous opportunities for more applications. Different synthesis methods of MOF thin films based on liquid phase or vacuum range were first introduced, and one of the most effective ways to fabricate quality thin films was depositing self-assembled monolayers (SAMs) on the primary substrate to further induce the nucleation and growth of MOF thin films. Furthermore, some traditional applications of MOF thin films (e. g. separation, catalysis, sensing) were summarized, as well as some newly-developed applications in photocatalysis, energy storage, photovoltaics, and electronic devices, which meet the demands for environmental sustainability and cleaner energy. Although the future is promising, MOF thin films still face some challenges. Therefore, some key factors those limit the MOF films' practical application were discussed, for example, the unclear growth mechanism of thin films, the poor quality and low film thermoe lectric performance. Based on the review of recent developments, this article will provide references for the future research of MOF thin films.

     

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