Detection and Sorption of Heavy Metal Ions in Aqueous Media by a Fluorescent Zr(IV) Metal-Organic Framework Functionalized with 2-Picolylamine Receptor Groups.

Increasing global environmental pollution due to heavy metal ions raises the importance of research on new multifunctional materials for simultaneous detection and removal of these contaminants from water resources. In this study, we report a microporous 8-connected Zr metal-organic framework (MOF) based on a terephthalate ligand decorated with a chelating 2-picolylamine side group (), which shows highly efficient fluorescence sensing and sorption of heavy metal cations. We demonstrate by detailed fluorescence studies the ability of a water-dispersible composite of with polyvinylpyrrolidone for real-time detection of Cu, Pb, and Hg in aqueous media.

Thermal Analysis of Metal-Organic Precursors for Functional Cu:ΝiOx Hole Transporting Layer in Inverted Perovskite Solar Cells: Role of Solution Combustion Chemistry in Cu:ΝiOx Thin Films Processing.

Low temperature solution combustion synthesis emerges as a facile method for the synthesis of functional metal oxides thin films for electronic applications. We study the solution combustion synthesis process of Cu:NiO using different molar ratios (w/o, 0.1 and 1.

Selective Mild Oxidation of Anilines into Nitroarenes by Catalytic Activation of Mesoporous Frameworks Linked with Gold-Loaded Mn O Nanoparticles.

This work reports the synthesis and catalytic application of mesoporous Au-loaded Mn O nanoparticle assemblies (MNAs) with different Au contents, i. e., 0.

Interface Engineering of MoS -Modified Graphitic Carbon Nitride Nano-photocatalysts for an Efficient Hydrogen Evolution Reaction.

Understanding of photochemical charge transfer processes at nanoscale heterojunctions is essential in developing effective catalysts. Here, we utilize a controllable synthesis method and a combination of optical absorption, photoluminescence, and electrochemical impedance spectroscopic studies to investigate the effect of MoS nanosheet lateral dimension and edge length size on the photochemical behavior of MoS -modified graphitic carbon nitride (g-C N ) heterojunctions. These nano-heterostructures, which comprise interlayer junctions with variable area (i.

Ordered Mesoporous Polyoxometalate-Organosilica Frameworks as Efficient Photocatalysts of the Hydrogen Evolution Reaction.

Polyoxometalate clusters have been recently established as promising nanomaterials for photocatalytic water splitting. Here, the synthesis is reported of mesoporous polymers composed of a 3D porous network of lacunary [XM O ] (XM ; X=P, Si; M=W, Mo) polyoxometalate units connected by ethano-bridged silsesquioxane linkers through a block copolymer-templated crosslinking polymerization of 1,2-bis(triethoxysilyl)ethane in acidic solution. The resulting materials feature an ordered mesostructured ethane-silica (MES) framework that hosts a high density of accessible polyoxometalate clusters, which allows for efficient catalytic reactions.

Mesoporous polyoxometalate cluster-crosslinked organosilica frameworks delivering exceptionally high photocatalytic activity.

Mesoporous framework materials comprising lacunary [SiW11O39](8-) polyoxometalate clusters covalently connected by ethane-bridged silsesquioxane linkers were synthesized through a block copolymer-templated cross-linking polymerization of 1,2-bis(triethoxysilyl)ethane in acid solution. These new hybrid materials, which exhibit a high density of catalytic sites, large pore surface and ordered pore structure, are shown to be highly effective in the photocatalytic oxidation of aryl alcohols with molecular oxygen.