Facile Conversion of Hydroxy Double Salts to Metal鈥揙rganic Frameworks Using Metal Oxide Particles and Atomic Layer Deposition Thin-Film Templates

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• 作者：Junjie Zhao ; William T. Nunn ; Paul C. Lemaire ; Yiliang Lin ; Michael D. Dickey ; Christopher J. Oldham ; Howard J. Walls ; Gregory W. Peterson ; Mark D. Losego ; Gregory N. Parsons
• 刊名：Journal of the American Chemical Society
• 出版年：2015
• 出版时间：November 4, 2015
• 年：2015
• 卷：137
• 期：43
• 页码：13756-13759
• 全文大小：342K
• ISSN：1520-5126

文摘

Rapid room-temperature synthesis of metal鈥搊rganic frameworks (MOFs) is highly desired for industrial implementation and commercialization. Here we find that a (Zn,Cu) hydroxy double salt (HDS) intermediate formed in situ from ZnO particles or thin films enables rapid growth (<1 min) of HKUST-1 (Cu₃(BTC)₂) at room temperature. The space-time-yield reaches >3鈥椻€?0⁴ kg路m^鈥?路d^鈥?, at least 1 order of magnitude greater than any prior report. The high anion exchange rate of (Zn,Cu) hydroxy nitrate HDS drives the ultrafast MOF formation. Similarly, we obtained Cu-BDC, ZIF-8, and IRMOF-3 structures from HDSs, demonstrating synthetic generality. Using ZnO thin films deposited via atomic layer deposition, MOF patterns are obtained on pre-patterned surfaces, and dense HKUST-1 coatings are grown onto various form factors, including polymer spheres, silicon wafers, and fibers. Breakthrough tests show that the MOF-functionalized fibers have high adsorption capacity for toxic gases. This rapid synthesis route is also promising for new MOF-based composite materials and applications.