Non -covalent LDH/MOF composite formation: a new approach in sustainability for solvent-dependent photocatalytic aerobic alcohol oxidation

Abstract

FeIII-based metal-organic framework denoted as MIL-100(Fe) coated with cobalt-aluminum layered double hydroxide (CoAl-LDH) nanoplates have been synthesized. Their structural information was obtained through Powder X-ray Diffraction (PXRD), Fourier transforms infrared...

Preparation of Mesoporous TiO2/Co3O4 Nanosheets for Efficient Photocatalytic Oxygen and Hydrogen Evolution

“…The TG curve of TiO 2 /LDH is similar to that of CoAl-LDH, exhibiting three weight loss steps (Figure f). The weight loss steps can be mainly attributed to the removal of absorbed and interlayer water (25–240 °C), the dehydroxylation of the hydroxide layers and the dissociation of the interlayer anions (240–330 °C), and the degradation of the remaining dehydroxylation of the hydroxide layers in LDHs (330–700 °C), respectively . The weight loss results of TG are well matched with the phases of the TiO 2 /LDH- T samples, confirming the phase formation in the calcination process.…”

Visible light photoreforming of greenhouse gases by nano Cu–Al LDH intercalated with urea-derived anions

“…The photocatalytic activity depends on the optical properties of the catalysts. 63 Based on the diffuse reectance results, the Kubelka-Munk (K-M) function F(R N ) can be calculated with the absorbance equivalence spectrum: 64…”

Grafting of Polymer Brushes on MOF Surface to Achieve Proton-Conducting Membranes

“…Metal–organic frameworks (MOFs) with ultrahigh porosity, inherent crystallinity, and a very high surface area are emerging materials. , The applications of MOFs have been demonstrated in diverse fields ranging from gas separation and CO 2 capture, − to water splitting through water purification, − and from drug delivery to energy applications. − A recent literature study indicates a growing interest in the field of postsynthetic modification (PSM) of MOF materials. − This modification can be achieved by anchoring a functional monolayer on the MOF surface, but the efficiency of the modification is limited owing to less number of active groups of the monolayer and the inability to achieve 100% functionalization using currently available PSM techniques. ,− However, the number of functional units can be increased substantially by attaching polymer chains on the MOF surface . A few reports in the literature demonstrated improvement in various physical properties in the postsynthetically modified MOFs when functional polymers are attached to MOFs, or when composites are prepared by mixing MOFs and polymers. ,,− However, no known PSM for MOF so far has addressed the challenges of the nonuniformity in the composites made from MOF and polymer owing to the thermodynamic incompatibility between these two components. In order to resolve this issue, loading or grafting of polymer chains on the surface can be considered to provide better uniformity of the MOF-polymer composite because of the favorable interactions between the postsynthetically modified MOF-anchored polymer chains and the matrix polymer.…”