Results 21 to 30 of about 6,958,099 (301)

Influence of morphology of hollow silica–alumina composite spheres on their activity for hydrolytic dehydrogenation of ammonia borane

open access: yesJournal of Advanced Ceramics, 2017
Hollow silica–alumina composite spheres were prepared by a polystyrene (PS) template method using various amounts of PS suspension. Homogeneous hollow spheres prepared using 40 g were found to be with a diameter of about 300 nm in scanning electron ...
Naoki Toyama   +7 more
doaj   +1 more source

Preparation and optimization of nanoporous hollow carbon spheres /S composite cathode materials for Li-S battery

open access: yesInternational Journal of Electrochemical Science, 2019
Aiming at the problems of dissolution and volume expansion of intermediates in lithium-sulfur batteries during the reaction process, a high-porosity mesoporous carbon sphere with hollow structure (labeled as PS-hollow carbon) is prepared by polystyrene ...
Wenhua Zhang   +6 more
doaj   +1 more source

Hollow‐Structured Materials for Thermal Insulation

open access: yesAdvanced Materials, 2018
AbstractHeating and cooling represent a significant portion of overall energy consumption of our society. Due to the diffusive nature of thermal energy, thermal insulation is critical for energy management to reduce energy waste and improve energy efficiency.
Feng Hu, Siyu Wu, Yugang Sun
openaire   +3 more sources

Hollow MFI Zeolite Supported Pt Catalysts for Highly Selective and Stable Hydrodeoxygenation of Guaiacol to Cycloalkanes

open access: yesNanomaterials, 2019
Hollow Silicalite-1 and ZSM-5 zeolites with hierarchical porous shells have been synthesized by using a dissolution-recrystallization method. The morphology, structure, and acidity of these zeolites supported Pt catalysts were characterized by XRD, FT-IR,
Xiaopo Niu   +4 more
doaj   +1 more source

The Photocatalytic and Antibacterial Performance of Nitrogen-Doped TiO2: Surface-Structure Dependence and Silver-Deposition Effect

open access: yesNanomaterials, 2020
Catalysts for visible-light-driven oxidative cleaning processes and antibacterial applications (also in the dark) were developed. In order to extend the photoactivity of titanium dioxide into the visible region, nitrogen-doped TiO2 catalysts with hollow ...
Abdul Wafi   +6 more
doaj   +1 more source

Gradient design of metal hollow sphere (MHS) foams with density gradients [PDF]

open access: yes, 2012
This is the post-print version of the final paper published in Composites Part B: Engineering. The published article is available from the link below. Changes resulting from the publishing process, such as peer review, editing, corrections, structural ...
Liu, Y   +5 more
core   +1 more source

Novel hollow all-carbon structures

open access: yesNanoscale, 2015
A new family of cavernous all-carbon structures built from graphyne sheets could be the key to new promising materials.
Sundholm, Dage   +2 more
openaire   +4 more sources

Structural behaviour of elliptical hollow sections under combined compression and uniaxial bending [PDF]

open access: yes, 2011
The structural behaviour of elliptical hollow sections (EHS) has been examined in previous studies under the isolated loading conditions of pure compression and pure bending.
Chan, TM   +8 more
core   +1 more source

Optimization Design of Fiber-Reinforced Composite Fan Blade with Hollow Structure [PDF]

open access: yesEPJ Web of Conferences
Fiber-reinforced composite fan blades, especially hollow fan blades, are gradually applied to civil aero engines, due to their light weight and good vibration damping performance.
Dianyin Hu   +4 more
doaj   +1 more source

Studying and Analyzing Operating Conditions of Hollow Fiber Membrane Preparation Process

open access: yesIraqi Journal of Chemical and Petroleum Engineering, 2022
Polymeric hollow fiber membrane is produced by a physical process called wet or dry/wet phase inversion; a technique includes many steps and depends on different factors (starting from selecting materials, end with post-treatment of hollow fiber ...
Zaid Rashad
doaj   +1 more source

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