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surfacearea, etc ; adsorbents; adsorption; chromium; ecosystems; formic acid; heavy metals; human health; pH; pollution; porosity; toxicity; wastewater; water quality; China; Show all 15 Subjects
Abstract:
... Zr-based metal-organic frameworks (MOFs) have been developed in recent years to treat heavy metals, e.g. hexavalent chromium Cr⁶⁺ pollution, which damages the surrounding ecosystem and threaten human health. This kind of MOF is stable and convenient to prepare, but has the disadvantage of low adsorption capacity, limiting its wide application. To this end, a novel formic acid and amino modified MO ...
surfacearea, etc ; 2,4-dichlorophenol; absorption; adsorption; density functional theory; energy; hot water treatment; light; nanospheres; photocatalysis; photocatalysts; tetracycline; texture; wastewater; water treatment; China; Show all 16 Subjects
Abstract:
... High-efficiency photocatalysts are of great significance for the application of photocatalytic technology in water treatment. In this study, N/Cu co-doped ZnS nanosphere photocatalyst (N/Cu-ZnS) is synthesized by a hydrothermal method for the first time. After doping, the texture of nanosphere becomes loose, the nanometer diameter is reduced, making the specific surface area of catalyst increased ...
surfacearea, etc ; X-ray diffraction; X-ray photoelectron spectroscopy; adsorption; catalysts; catalytic activity; dielectric spectroscopy; pH; rhodamines; transmission electron microscopy; ultrasonics; vibration; China; Show all 13 Subjects
Abstract:
... This paper synthesized a new type of ternary piezoelectric catalyst MoOₓ/ZnS/ZnO (MZZ) by a one-step method. The catalytic degradation of Rhodamine B (RhB) solution (10 μg/g, pH = 7.0) shows that the composite catalyst has excellent piezoelectric catalytic activity under ultrasonic vibration (40 kHz). The piezoelectric degradation rate of the optimal sample reached 0.054 min⁻¹, which was about 2.5 ...
... PREMISE: The phenomenon called “diminishing returns” refers to a scaling relationship between lamina mass (M) vs. lamina area (A) in many species, i.e., M ∝ Aᵅ>¹, where α is the scaling exponent exceeding unity. Prior studies have focused on the scaling relationships between lamina dry mass (DM) and A, or between fresh mass (FM) and A. However, the scaling between petiole mass and M and A has seld ...
surfacearea, etc ; crystallization; nanopores; porosity; Show all 4 Subjects
Abstract:
... Metal–organic frameworks (MOFs) are a promising nanoporous functional material system; however, the practicality of shaping freeform MOF monoliths, while retaining their porosity, remains a challenge. Here, we demonstrate that meniscus-guided three-dimensional (3D) printing can produce pure MOF monoliths with high gas-uptake performance. The method exploits a femtoliter precursor ink meniscus to h ...
... Semi-packed columns are microfabricated gas chromatography columns which have a large surface area and high aspect ratio. In this paper, a new semi-packed column with high-density elliptic cylindrical posts (SCHECP) made by a micro-electro-mechanical system (MEMS) technique was reported. Compared to a semi-packed column with cylindrical posts (SCCP) under the same effective width, the surface area ...
surfacearea, etc ; evaporation rate; fabrics; nanofibers; Show all 4 Subjects
Abstract:
... Contact force between fibers in different scales, such as microfiber and nanofiber, is different with those in the same scale. In this work, based on an electrospinning nanofiber yarn system, three different nanofiber core-spun yarns were produced and a novel experiment was designed to investigate contact force between the nanofiber layer and microfiber layer. Yarn properties, including fiber pola ...
surfacearea, etc ; aromatic hydrocarbons; dyes; electrochemistry; Show all 4 Subjects
Abstract:
... A simple strategy was used to prepare functional two-dimensional materials via the combination of pillar[5]arene (P5) and MXene. The electrochemical results of MXene-P5 exhibit high supramolecular recognition, enrichment capability, and high electrochemical response toward dye molecules, which are probably due to the synergetic effects from high conductivity, high surface area, and host–guest reco ...
surfacearea, etc ; ambient temperature; energy; porosity; Show all 4 Subjects
Abstract:
... Metal-organic frameworks (MOFs) with exceptional features such as high structural diversity and surface area as well as controlled pore size has been considered a promising candidate for developing room temperature highly-sensitive gas sensors. In comparison, the hetero-metallic MOFs with redox-active open-metal sites and mixed metal nodes may create peculiar surface properties and synergetic effe ...
surfacearea, etc ; adsorption; desorption; process design; Show all 4 Subjects
Abstract:
... In this paper, a series of Pd/CeO₂ catalysts prepared by different synthesis routes and showing different morphological and textural properties have been investigated for passive NOₓ adsorption (PNA) applications. The results obtained by NOₓ adsorption/desorption tests demonstrated that NOₓ storage capacity and NOₓ storage efficiency of Pd/CeO₂ materials depend strictly on their surface area, wher ...
surfacearea, etc ; electrodes; human health; nanofibers; polyamides; Show all 5 Subjects
Abstract:
... Sensing materials with fiber structures are excellent candidates for the fabrication of flexible pressure sensors due to their large specific surface area and abundant contact points. Here, an ultrathin, flexible piezoresistive pressure sensor that consists of a multilayer nanofiber network structure prepared via a simple electrospinning technique is reported. The ultrathin sensitive layer is comp ...
surfacearea, etc ; particle size; particle size distribution; Show all 3 Subjects
Abstract:
... Group C particles possess great potential in gas-phase catalytic reactions due to the large specific surface area. This work focuses on the effects of particle size distribution (PSD), average particle diameter, and addition of nano-additive on the flowability and fluidization quality of Group C and Group A powders. Virgin Group C powders are hard to fluidize, but with the so-called nano-modulatio ...
surfacearea, etc ; capacitance; electrodes; nanocrystals; oxygen; sodium; Show all 6 Subjects
Abstract:
... Herein, a facile one-step method is developed to in situ prepare crystalline anatase and rutile TiO₂ nanocrystals on Ti₃C₂Tₓ by regulating the metastable Ti ions. The combination of TiO₂ nanocrystals and Ti₃C₂Tₓ not only introduces extensive accessible sites for Na⁺ storage, but also promotes the charge transport by efficiently relieving the collapse of Ti₃C₂Tₓ. Compared with pristine Ti₃C₂Tₓ, the ...
surfacearea, etc ; anodes; carbon; energy density; lithium; Show all 5 Subjects
Abstract:
... The high energy density metallic Li anode is a desired electrode candidate for commercial application in future. However, uncontrolled growth of Li dendrites can easily lead to thermal runaway and infinite volume changes. Herein, we propose the addition of lithiophilic ZnO filled into the microsized cubic carbon framework through in situ pyrolyzation of the multiwalled carbon nanotubes-implanted Z ...
surfacearea, etc ; adsorption; ferrihydrite; goethite; nanocrystals; phosphates; Show all 6 Subjects
Abstract:
... Assessing the surface reactivity of metal (hydr)oxides in soils is essential for quantifying ion adsorption phenomena that control the availability of nutrients and pollutants. Despite the high natural abundance of Fe and Al (hydr)oxides in intensively weathered environments, the surface reactivity of these pedogenic materials has not been consistently characterized for weathered tropical soils. H ...
surfacearea, etc ; adsorption; photocatalysis; porosity; remediation; water purification; Show all 6 Subjects
Abstract:
... Metal-organic frameworks (MOFs) are a versatile class of porous materials offering unprecedented scope for chemical and structural tunability. On account of their synthetic versatility, tunable and exceptional host-guest chemistry they are widely utilized in many prominent water remediation techniques. However, some of the MOFs present low structural stabilities specifically in aqueous and harsh c ...
surfacearea, etc ; adsorption; lithium; potassium; pyrolysis; quantitative analysis; Show all 6 Subjects
Abstract:
... Potassium ion batteries have become one of the most promising candidates for Lithium batteries replacement. Here we report a carbon quantum dots@hard carbon (CQDHC) composite electrode material for PIBs that was fabricated by a one-step low-temperature pyrolysis process for the first time. Without complicated post-processing steps, the as-obtained CQDHC can be directly used as a negative potassium ...
surfacearea, etc ; exergy; humans; models; relative humidity; temperature; Show all 6 Subjects
Abstract:
... Over the past decades, thermodynamics concepts applied to biological systems, such as the human body, have aided in explaining their functioning. The first law of thermodynamics is primarily used — from the prime research that assessed the body surface area and the temperature distribution in members to the thermal comfort conditions with Fanger methods. The second law of thermodynamics may provid ...
surfacearea, etc ; biodiversity; economic development; geography; humans; China; Show all 6 Subjects
Abstract:
... Protected areas (PAs) are designed to conserve biodiversity and protect the species within their boundaries. However, some PAs are not achieving these goals, partly due to human activities inside and outside PAs. Here we evaluated the ability of 290 national-level PAs in China to reduce the impacts of economic development pressures using remote sensing-based fine resolution impervious surface area ...
surfacearea, etc ; air pollutants; humans; nanocomposites; nanospheres; porosity; Show all 6 Subjects
Abstract:
... Timely detection of harmful, poisonous and air pollutant gases is of vital importance to the protection of human beings from exposure to rigorous gases. The development of gas-sensing devices based on sphere-like porous SnO₂/ZIF-8 nanocomposites is required to overcome this challenge. Nanostructures with high surface area, more porosity and hollow interior provide plenty of active cites for high r ...