Selective oxidation of styrene over transition metal-doped mesoporous silica catalyst.

An inverse-micelle sol-gel method was used to prepare Ti and Fe-doped mesoporous silica catalysts, and they were utilized for selective oxidation of styrene to benzaldehyde. The amorphous peak of silica was confirmed by XRD and there were no peaks related to Ti or Fe oxides. Results indicate that the metals were homogeneously distributed in the silica matrix, leading to higher surface area and pore volume.

Unveiling Enhanced PEC Water Oxidation: Morphology Tuning and Interfacial Phase Change in α-FeO@K-OMS-2 Branched Core-Shell Nanoarrays.

A simple fabrication method that involves two steps of hydrothermal reaction has been demonstrated for the growth of α-FeO@K-OMS-2 branched core-shell nanoarrays. Different reactant concentrations in the shell-forming step led to different morphologies in the resultant composites, denoted as 0.25 OC, 0.

Cycling-Induced Capacity Increase of Bulk and Artificially Layered LiTaO Anodes in Lithium-Ion Batteries.

Tantalum-based oxide electrodes have recently drawn much attention as promising anode materials owing to their hybrid Li storage mechanism. However, the utilization of LiTaO electrode materials that can deliver a high theoretical capacity of 568 mAh g has been neglected. Herein, we prepare a layered LiTaO electrode formed artificially by restacking LiTaO nanosheets using a facile synthesis method and investigate the Li storage performance of this electrode compared with its bulk counterpart.

Partial oxidation of methane to methanol on boron nitride at near critical acetonitrile.

Direct catalytic conversion of methane to methanol with O has been a fundamental challenge in unlocking abundant natural gas supplies. Metal-free methane conversion with 17% methanol yield based on the limiting reagent O at 275 °C was achieved with near supercritical acetonitrile in the presence of boron nitride. Reaction temperature, catalyst loading, dwell time, methane-oxygen molar ratio, and solvent-oxygen molar ratios were identified as critical factors controlling methane activation and the methanol yield.

Mesoporous Crystalline Niobium Oxide with a High Surface Area: A Solid Acid Catalyst for Alkyne Hydration.

A mesoporous crystalline niobium oxide with tunable pore sizes was synthesized via the sol-gel-based inverse micelle method. The material shows a surface area of 127 m/g, which is the highest surface area reported so far for crystalline niobium oxide synthesized by soft template methods. The material also has a monomodal pore size distribution with an average pore diameter of 5.

Intrafibrillar Mineralized Collagen-Hydroxyapatite-Based Scaffolds for Bone Regeneration.

As one of the major challenges in the field of tissue engineering, large skeletal defects have attracted wide attention from researchers. Collagen (Col) and hydroxyapatite (HA), the most abundant protein and the main component in natural bone, respectively, are usually used as a biomimetic composite material in tissue engineering due to their excellent biocompatibility and biodegradability. In this study, novel intrafibrillar mineralized Col-HA-based scaffolds, constructed in either cellular or lamellar microstructures, were established through a biomimetic method to enhance the new bone-regenerating capability of tissue engineering scaffolds.