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porousmedia, etc ; air; differential pressure; fabrics; nonlinear models; permeability; viscosity; Show all 7 Subjects
Abstract:
... To explore the effect of structure parameters on the air permeability of parachute fabric, the parachute fabric was treated as a porous medium. A nonlinear model of the viscosity and the inertia coefficient of the parachute fabric was established based on the Ergun formula, and an an alytical model of the fabric permeability with the fabric structure parameters was established considering the air ...
... The variation in pore size in mesoporous films produced by electrochemically assisted self-assembly (EASA) with the surfactant chain length is described. EASA produces a hexagonal array of pores perpendicular to the substrate surface by using an applied potential to organize cationic surfactants and the resultant current to drive condensation in a silica sol. Here, we show that a range of pore siz ...
... All-inorganic tin halide perovskite compounds, such as CsSnI₃, have attracted attention in the field of solar cells due to their eco-friendly properties. It is quite a challenge to fabricate high-quality CsSnI₃ perovskite films with low defect density due to the low defect tolerance and overquick crystallization growth rate. Herein, we propose a simple yet effective method to modulate the dynamic ...
porousmedia, etc ; absorption; carbon; magnetism; nanocomposites; Show all 5 Subjects
Abstract:
... Manganese-based heterostructured nanocomposites have attracted extensive attention due to their abundant interfaces and controllable multi-component synergistic absorption mechanisms resulting in excellent microwave absorption properties. However, the development of the dual manganese-containing magnetic/dielectric heterojunctions and the controllable construction of their heterointerfaces and def ...
porousmedia, etc ; aluminum oxide; sampling; solubility; Show all 4 Subjects
Abstract:
... Ordered alumina through-hole membranes were obtained by a combination of the anodization of Al, formation of a TiO₂ protective layer, and subsequent etching. Two-layered anodic porous alumina materials composed of TiO₂-coated and noncoated alumina were prepared by the combination of the anodization of Al and the formation of a TiO₂ protective layer by atomic layer deposition (ALD). The obtained tw ...
porousmedia, etc ; geometry; models; physics; technology; Show all 5 Subjects
Abstract:
... In this study, the Shan Chen Lattice Boltzmann method (LBM) is implemented to simulate pore-scale physics of drying porous media. The pore-scale mechanisms responsible for multiphase fluid transport in drying porous media are revisited, and the physical effects such as capillary valve effect and Haines jumps are delineated. Fluctuations observed in drying rate curves are realized to be caused by H ...
porousmedia, etc ; hydrogels; hydrogen; milk; photons; polymerization; Show all 6 Subjects
Abstract:
... In comparison with molecularly imprinted photonic hydrogel (MIPH) with specific molecular recognition sites inside matrix, surface molecularly imprinted photonic hydrogel (S-MIPH) is more competitive as a molecular sensor due to presence of molecular recognition sites distributed on surface of hydrogel wall. Nevertheless, the construction of S-MIPH sensors is still challenging owing to the absence ...
porousmedia, etc ; batteries; electrolytes; polymers; solvents; vanadium; Show all 6 Subjects
Abstract:
... The ongoing development of redox-active charge carriers for nonaqueous redox-flow batteries has led to energy-dense storage concepts and chemistries with high cell voltages. However, rarely are these candidates for flowable energy storage evaluated in tandem with cell separators compatible with organic solvent, limiting progress in the identification of suitable charge carrier–separator pairings. ...
porousmedia, etc ; carbon; lithium; nanospheres; polymerization; pyrolysis; Show all 6 Subjects
Abstract:
... Uncontrollable Li dendrite growth increases the risks of cell short-circuit or even safety accidents, severely hindering the practical application of lithium metal anodes (LMAs). Herein, N/S-co-doped mesoporous carbon (NSMC) nanospheres with ordered mesoporous channels prepared by an in situ polymerization and facile pyrolysis approach are designed and can effectively regulate the Li nucleation/de ...
porousmedia, etc ; comparative study; hydrodynamics; overland flow; water; Show all 5 Subjects
Abstract:
... Smoothed Particle Hydrodynamics (SPH) has successfully been employed in the last decade for macroscopic simulation of fluid flow in porous media. However, there are still certain inconsistencies in the existing models with regard to both the definition of the governing equations and the adopted numerical treatments. In this study, thus, in order for a comparative investigation of the existing prac ...
porousmedia, etc ; crosslinking; cryogels; nanofibers; silk; tissue repair; Show all 6 Subjects
Abstract:
... Cryogels are widely used in tissue regeneration due to their porous structures and friendly hydrogel performance. Silk-based cryogels were developed but failed to exhibit desirable tunable properties to adapt various biomedical applications. Here, amorphous short silk nanofibers (SSFs) were introduced to fabricate silk cryogels with versatile cues. Compared to previous silk cryogels, the SSF cryog ...
porousmedia, etc ; adsorption; catalysts; catalytic activity; dehydrogenation; sulfur; Show all 6 Subjects
Abstract:
... The addition of sulfur to supported Pt catalysts often regulates Pt defect sites causing side reactions, where the interaction between Pt and sulfur depends on catalyst preparation methods. Herein, we report the solvent-deficient precipitation (SDP) to afford mesoporous sulfur-decorated Pt–Al₂O₃ catalysts with different sulfur contents. In the dehydrogenation of perhydro benzyltoluenes, the degree ...
Satoshi Izumoto; Johan Alexander Huisman; Egon Zimmermann; Joris Heyman; Francesco Gomez; Hervé Tabuteau; Romain Laniel; Harry Vereecken; Yves Méheust; Tanguy Le Borgne
porousmedia, etc ; calcite; electric field; environmental science; technology; Show all 5 Subjects
Abstract:
... Spectral induced polarization (SIP) has the potential for monitoring reactive processes in the subsurface. While strong SIP responses have been measured in response to calcite precipitation, their origin and mechanism remain debated. Here we present a novel geo-electrical millifluidic setup designed to observe microscale reactive transport processes while performing SIP measurements. We induced ca ...
porousmedia, etc ; cellulose; imidazole; methanol; permeability; phosphotungstic acid; Show all 6 Subjects
Abstract:
... Nanocellulose (NC) composite membranes containing novel ternary materials including NC, imidazole (Im), and mesoporous phosphotungstic acid (m-PTA) were successfully fabricated by a phase inversion method. The single-particle size of NC was 88.79 nm with a spherical form. A m-PTA filler with a mesopore size of 4.89 nm was also successfully synthesized by a self-assembly method. Moreover, the fabri ...
porousmedia, etc ; environmental impact; gels; green chemistry; silica; wastes; Show all 6 Subjects
Abstract:
... To answer questions surrounding the sustainability of silica production, MilliporeSigma’s DOZN 2.0 Green Chemistry Evaluator was employed as it provides quantitative values based on the 12 principles of Green Chemistry. As a first study using DOZN 2.0 to evaluate the greenness of nanomaterials, a range of silica types were considered and their greenness scores compared. These included low- and hig ...
porousmedia, etc ; alkali treatment; electron microscopy; oxidation; oxygen production; Show all 5 Subjects
Abstract:
... Since of their adjustable pore structure and variety of metal sites, MOFs materials have infinite possibilities, but their low intrinsic activity hinders them from being employed in electrolytic water. The sulfurization and oxidation of MOFs has proven to be a feasible technique for producing highly active catalytic materials. Here, the MOFs are completely converted to hydroxide by treatment with ...
porousmedia, etc ; anisotropy; coal; desulfurization; oxygen; persimmons; sorbents; sulfur; Show all 8 Subjects
Abstract:
... A series of macroporous three-dimensional (3-D) (a%Mo-Mn)₁.₅Al₀.₅Oₓ sorbents with anisotropic structures was fabricated by the self-assembly of vacuum-assisted sol-gel in the persimmon wood-derived channels, over which expectative desulfurization performance had been investigated in a fixed reactor. High breakthrough sulfur capacity (299.1 mg·g⁻¹) and effective utilization (EU, 93.5%) over (6%Mo-M ...
porousmedia, etc ; electrochemistry; electrodes; graphene; liquids; pH; ultrasonic treatment; Show all 7 Subjects
Abstract:
... Parabens are chemicals widely used as preservatives in different types of industrial products. In recent years, the concern about the safety of these compounds has increased due to their endocrine disrupting activity. For this reason, their use is highly regulated and even some of them have already been banned. Thus, methods for the sensitive and selective detection of these compounds are required ...
porousmedia, etc ; adsorption; micropores; nanoflowers; nanosheets; oxygen; semiconductors; shrinkage; Show all 8 Subjects
Abstract:
... It is well known that the metal atoms of metal oxide semiconductor (MOS) exhibit significant activity in gas sensing. However, limited by the shielding effect of the outer oxygen atom layer, layered MoO₃ is often difficult to show ideal gas adsorption activity. Hence, the MoO₃ microporous nanoflowers (MPNFs) assembled by porous two-dimensional nanosheets were successfully synthesized and exhibited ...
porousmedia, etc ; ambient temperature; carbonates; catalysts; catalytic activity; transesterification; Show all 6 Subjects
Abstract:
... Transesterification of dialkyl carbonate with various alcohols is a very attractive route for synthesizing unsymmetrical organic carbonates. Intensive efforts have been focused on developing highly active and stable heterogeneous catalysts that can efficiently catalyze the transesterification reaction at mild conditions. In this work, the synthesis of unsymmetrical organic carbonates was conducted ...