A new microporous Zr4+ MOF combines both extraordinary sorption capability and exceptional luminescence sensing properties for Cr(vi) in aqueous media.

A Zr4+ MOF shows an exceptional capability to capture TcO4− and selective luminescence sensing for ReO4−, demonstrated for the first time for MOF materials.

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A 3D mesoporous network of ∼6 nm cobalt ferrite (CoFe2O4) nanoparticles (NPs), synthesized through a polymer-assisted aggregation self-assembly method, is presented.

A microporous Mg2+ MOF shows single-crystal-to-single-crystal exchange of Mg2+ by Cu2+ ions.

Ordered mesoporous composite materials consisting of nanocrystalline ZrO2 and 12-phosphotungstic and 12-silicotungstic acids were synthesized and shown to be superior catalysts than individual components.

Multicomponent mesoporous metal oxides show promise in the area of heterogeneous catalysis due to the synergetic interactions between the framework components and the high internal surface area. In this study, we present the synthesis of ordered mesoporous tungsten(VI) oxide-vanadium oxide (V 2 O 5 ) nanocomposite frameworks via a two-step wet chemical deposition and nanocasting process and demonstrate that they exhibit high catalytic activity and stability for the oxidation of aryl alcohols, using tert-butyl hydroperoxide (t-BuOOH) as oxidant. X-ray diffraction, transmission electron microscopy and nitrogen porosimetry results indicate that the template-free materials possess a 3D mesoscopic structure of discernible domains of parallel-arranged nanorods and have an internal pore surface with narrow mesopores. The chemical composition and molecular structure of the mesoporous matrix were determined with elemental X-ray microanalysis (EDS), diffuse reflectance ultraviolet-visible (UV-vis) and Raman spectroscopy. Our catalytic results indicate that a small addition of V 2 O 5 into the lattice of WO 3 has a beneficial effect on the catalytic performance. Thus, the 4% V 2 O 5 -loaded WO 3 catalyst shows a large improvement in the oxidation of various para-substituted aryl alcohols with respect to the pure mesoporous WO 3 , giving good-to-high yields (ca. 80-100%) of the target products within 1-4 h reaction time.

The design of nanoscale materials has been considered important for enhancing their surface properties for catalysis. Metal oxide nanoparticles have a large number of exposed surface active sites, but they suffer from low reactivity and poor stability resulting from excessive aggregation into less active microscopic structures. Herein, the synthesis of mesoporous Mn3O4 nanoparticle assemblies by polymer‐assisted self‐assembly is presented and their catalytic activity is demonstrated in the oxidation of various saturated and unsaturated hydrocarbons, including aromatic alkenes and aryl alkanes, in the presence of tert‐butyl hydroperoxide as a mild oxidant. It is also shown through comparative studies that the high catalytic activity and stability of these Mn3O4 assemblies arise from the unique three‐dimensional open‐pore structure, high internal surface area (90 m2 g−1) and uniform mesopores (≈6.6 nm in size).