Morphological control of covalent organic frameworks (COFs) is particularly interesting to boost their applications; however, it remains a grand challenge prepare hollow structured COFs (HCOFs) with high crystallinity and uniform morphology. Herein, we report versatile efficient strategy amorphous-to-crystalline transformation for the general controllable fabrication highly crystalline HCOFs. These HCOFs exhibited ultrahigh surface areas, radially oriented nanopore channels, quite...

Abstract Controlling localization of multiple metal nanoparticles on a single support is at the cutting edge designing cascade catalysts, but still scientific and technological challenge because lack nanostructured materials that can not only host in different sub-compartments also enable efficient molecular transport between metals. Herein we report multicompartmentalized mesoporous organosilica with spatially separated are connected by short nanochannels. Such unique structure allows...

Exploration of new methodologies to tune catalytic selectivity is a long-sought goal in community. In this work, oil-water interfaces Pickering emulsions are developed effectively regulate hydrogenation reactions, which was achieved via precise control the spatial distribution metal nanoparticles at droplet interfaces. It found that Pd located inner interfacial layer droplets exhibited significantly enhanced for p-chloroaniline (up 99.6%) p-chloronitrobenzene comparison those outer (63.6%)...

Developing biocatalytic cascades in abiological conditions is of utmost significance, but such processes often suffer from low reaction efficiency because incompatible environments and suppressed intermediate transportation. Herein we report a new type cascade by localizing two different enzymes separately the outer inner interfacial layers Pickering emulsion droplets. This versatile approach enables localization their preferred microenvironments simultaneously nanoscale proximity each...

Abstract Exploiting advanced amphiphilic solid catalysts is crucial to the development of Pickering emulsion catalysis. Herein, covalent organic framework (COF) nanoparticles constructed with highly hydrophobic monomers as linkers were found show superior amphiphilicity and they then developed a new class emulsifiers for Employing COFs emulsifiers, emulsions controllable type droplet sizes obtained. COF materials have also been demonstrated serve porous surface coatings replace traditional...

Developing new methods to engineer photobiocatalytic reactions is of utmost significance for artificial photosynthesis, but it remains a grand challenge due the intrinsic incompatibility biocatalysts with photocatalysts. In this work, photocatalysts and enzymes were spatially colocalized at Pickering droplet interfaces, where reaction microenvironment spatial distance between two distinct catalysts exquisitely regulated achieve unprecedented cascade reactions. As proof concept, ultrathin...

An amphiphilic PMO hollow shell with order mesostructure is constructed for application in sorption and catalysis.

The hydrophobicity/hydrophilicity of nanocatalysts has a significant impact on their performances via modulating the adsorption, transfer, and desorption reactants/products. In this work, we reported novel multifunctional amphiphilic nanoreactor composed Janus nitrogen-doped carbon@silica hollow nanostructure ultrasmall Pt nanoparticles. core/shell polybenzoxazine@mesosilica spheres were used as precursor for pyrolysis. It was found that internal polybenzoxazine decomposed from interior to...

Nitrogen doped porous carbon hollow spheres (N-PCHSs) with an ultrahigh nitrogen content of 15.9 wt% and a high surface area 775 m(2) g(-1) were prepared using Melamine-formaldehyde nanospheres as hard templates sources. The N-PCHSs completely characterized found to exhibit considerable CO2 adsorption performance (4.42 mmol g(-1)).

This study describes the preparation of a multifunctional adsorptive catalyst by incorporation ligand groups within channels magnetic amphiphilic nanocomposites and attached with Pd nanoparticles.

The synergistic effect among different components and the structural morphological control of catalytic nanomaterials have attracted considerable research interest in field electrocatalysis, as using a rational design with desired structure, morphology, chemical compositions is an effective strategy for enhancing performance. Here, by changing Ni/Co atomic ratio raw materials, series samples three-dimensional (3D) hollow porous ternary multicomponent heterostructure has been successfully...

A Janus mesosilica nanosheet with perpendicular mesochannels has been explored to use as a highly efficient interfacial catalyst for biphasic reactions. Owing the excellent activity and accessible reaction interface, significantly enhanced catalytic is presented in aqueous hydrogenation

Lowering the energy barrier of water dissociation is critical to achieving highly efficient hydrogen evolution in alkaline conditions. Herein, we reported mesoporous RhRu nanosponges with enhanced behavior as a new class high-performance electrocatalysts for reaction (HER). The obtained have binary alloy structure (fcc) and porous high surface area. Our catalyst displayed an outstanding HER activity overpotential 25 mV at 10 mA cm–2 Tafel slope 47.5 dec–1 1.0 M KOH, which significantly...

This work describes the design, synthesis and analysis of an amphiphilic hollow mesoporous shell encapsulating catalytically active Au@Pd bimetal nanoparticles. The particles exhibited excellent catalytic activity stability in aerobic oxidation primary secondary alcohols to their corresponding aldehydes or ketones water when using air as oxidizing agent under atmospheric pressure.

Abstract Cyclization of citronellal is a necessary intermediate step to produce the important flavor chemical (−)‐menthol. Here, continuous‐flow Pickering emulsion (FPE) strategy for selective cyclization (−)‐isopulegol by using water droplets hosting heteropolyacid (HPA) catalyst fill column reactor demonstrated. Owing large liquid–liquid interface and excellent confinement ability toward HPA, FPE system exhibited much higher catalysis efficiency than its batch counterpart (2–5‐fold) an...

One new class of one-dimensional highly uniform PMO helical nanotubes with a unique amphiphilic framework and perpendicular mesochannels in walls has been reported<italic>via</italic>a simple, efficient controllable one-step strategy. These show outstanding performance the removal hydrophobic contaminants from water.

We developed a strategy to construct catalyst with hydrophobic catalytic interface covered by hydrophilic, nanoporous shell, which displays high efficiency and recyclability in aqueous reactions.

Exploiting new interface-active solid catalysts is crucial to construct efficient Pickering emulsion systems for biphasic catalysis. In this work, ultrathin g-C3N4 nanosheets (g-C3N4-NSs) were developed as a emulsifier directly position catalytic sites at oil–water interfaces improving the reaction efficiency of reaction. Exemplified by metal-involved nitroarenes reduction, Pd/g-C3N4-NSs catalyst with Pd nanoparticles loaded on surface g-C3N4-NSs exhibited excellent activity 1220 h–1. Such...

Abstract Exploiting advanced amphiphilic solid catalysts is crucial to the development of Pickering emulsion catalysis. Herein, covalent organic framework (COF) nanoparticles constructed with highly hydrophobic monomers as linkers were found show superior amphiphilicity and they then developed a new class emulsifiers for Employing COFs emulsifiers, emulsions controllable type droplet sizes obtained. COF materials have also been demonstrated serve porous surface coatings replace traditional...

A series of in situ hot stage experiments using transmission electron microscopy (TEM) were studied to directly observe the transition a Ni-MOF Ni nanoparticles wrapped carbon (Ni-NPC) over temperatures ranging from ambient temperature 700 °C. Ni-NPC-600 displays high catalytic activity 4-nitrophenol reduction and conversion, even after 10 cycles.

Developing efficient methods to improve catalytic selectivity, particularly without sacrificing activity, is of paramount significance for chemical synthesis. In this work, we report a small ligand-involved Pickering droplet interface as brand-new strategy effectively regulate reaction selectivity metal catalysts. It was found that ligands such polar arenes could engineer the surface structure Pt catalysts were assembled at interfaces. Due strong hydrogen-bonding interactions with water,...

Background: We aimed to evaluate the effects of both joint and individual types fatty acids on low muscle mass in adults. Methods: enrolled 8842 adults selected from National Health Nutrition Examination Survey (NHANES). Multivariate adjusted weighted logistic regression models were employed connection between mass. used restricted cubic splines (RCSs) determine whether relationship is linear or non-linear, while stratified analyses interaction also assessed. Weighted quantile sum (WQS)...