Castillo-Blas Celia, García Montaña J, Chester Ashleigh M, Mazaj Matjaž, Guan Shaoliang, Robertson Georgina P, Kono Ayano, Steele James M A, León-Alcaide Luis, Poletto-Rodrigues Bruno, Chater Philip A, Cabrera Silvia, Krajnc Andraž, Wondraczek Lothar, Keen David A, Alemán Jose, Bennett Thomas D
Department of Materials Science and Metallurgy, University of Cambridge, Cambridge CB3 0FS, United Kingdom.
Organic Chemistry Department, Science Faculty, Universidad Autónoma de Madrid, C/Francisco Tomás y Valiente, 7, 28049 Madrid, Spain.
ACS Appl Mater Interfaces. 2025 Mar 12;17(10):15793-15803. doi: 10.1021/acsami.4c18444. Epub 2025 Mar 3.
Metal-organic framework (MOF) composites are proposed as solutions to the mechanical instability of pure MOF materials. Here, we present a new compositional series of recently discovered MOF-crystalline inorganic glass composites. In this case, formed by the combination of a photocatalytic titanium MOF (MIL-125-NH) and a phosphate-based glass (20%NaO-10%NaSO-70%PO). This new family of composites has been synthesized and characterized using powder X-ray diffraction, thermal gravimetric analysis, differential scanning calorimetry, scanning electron microscopy, and X-ray total scattering. Through analysis of the pair distribution function extracted from X-ray total scattering data, the atom-atom interactions at the MOF-glass interface are described. Nitrogen and carbon dioxide isotherms demonstrate good surface area values despite the pelletization and mixing of the MOF with a dense inorganic glass. The catalytic activity of these materials was investigated in the photooxidation of amines to imines, showing the retention of the photocatalytic effectiveness of the parent pristine MOF.
金属有机框架（MOF）复合材料被认为是解决纯MOF材料机械不稳定性的方案。在此，我们展示了一系列新的由最近发现的MOF-结晶无机玻璃复合材料组成的系列。在这种情况下，它是由光催化钛MOF（MIL-125-NH）和磷酸盐基玻璃（20%NaO-10%NaSO-70%PO）组合而成。这个新的复合材料家族已通过粉末X射线衍射、热重分析、差示扫描量热法、扫描电子显微镜和X射线全散射进行了合成和表征。通过对从X射线全散射数据中提取的对分布函数的分析，描述了MOF-玻璃界面处的原子-原子相互作用。氮气和二氧化碳等温线表明，尽管MOF与致密无机玻璃进行了造粒和混合，但仍具有良好的表面积值。对这些材料在胺光氧化为亚胺的过程中的催化活性进行了研究，结果表明母体原始MOF的光催化有效性得以保留。
