Results 41 to 50 of about 3,342,283 (351)

Change of Optical Properties of Carbon-Doped Silicon Nanostructures under the Influence of a Pulsed Electron Beam

open access: yesJournal of Nanotechnology, 2022
In the work, porous silicon with observed photoluminescence was made from a p-type silicon substrate doped with boron and crystallographic orientation (100) using the method of electrochemical etching in a solution containing H2(SiF6) (silicon ...
M. B. Darmenkulova   +4 more
doaj   +1 more source

Long-time evolution of sequestered CO$_2$ in porous media [PDF]

open access: yes, 2014
CO$_2$ sequestration in subsurface reservoirs is important for limiting atmospheric CO$_2$ concentrations. However, a complete physical picture able to predict the structure developing within the porous medium is lacking.
Cohen, Yossi, Rothman, Daniel H.
core   +2 more sources

Dynamic Covalent Synthesis of Crystalline Porous Graphitic Frameworks [PDF]

open access: yes, 2020
Porous graphitic framework (PGF) is a two-dimensional (2D) material that has emerging energy applications. An archetype contains stacked 2D layers, the structure of which features a fully annulated aromatic skeleton with embedded heteroatoms and periodic
Cai, S   +18 more
core   +2 more sources

Enhanced functional properties of porous carbon materials as high-performance electrode materials for supercapacitors

open access: yesGreen Energy and Resources, 2023
Porous carbons with unique electronic, chemical, and surface properties have become a research hotspot in energy storage applications. But the electrodes of porous carbons in supercapacitors cannot meet the ever-inrceasing demands for high energy density
Kai Yang   +6 more
doaj   +1 more source

Inorganic Graphenylene: A Porous Two-Dimensional Material With Tunable Band Gap

open access: yes, 2014
By means of ab initio calculations we investigate the possibility of existence of a boron nitride (BN) porous two-dimensional nanosheet which is geometrically similar to the carbon allotrope known as biphenylene carbon.
Atreto, Pedro Alves da Silva   +3 more
core   +1 more source

Characterization of rice husk-based catalyst prepared via conventional and microwave carbonisation [PDF]

open access: yes, 2017
© 2017 Elsevier Ltd. Carbon-based sulphonated catalysts (CBSCs) were made from rice husk for biodiesel production. The CBSCs were prepared by microwave (MW) and conventional heating processes from the same feedstock.
Adam   +47 more
core   +1 more source

Improvement of Hydrogen Desorption Characteristics of MgH2 With Core-shell Ni@C Composites

open access: yesMolecules, 2018
Magnesium hydride (MgH2) has become popular to study in hydrogen storage materials research due to its high theoretical capacity and low cost. However, the high hydrogen desorption temperature and enthalpy as well as the depressed kinetics, have severely
Cuihua An, Qibo Deng
doaj   +1 more source

Synthesis and Application of Porous Carbon Nanomaterials from Pomelo Peels: A Review

open access: yesMolecules, 2023
Advanced carbon nanomaterials have been widely applied in various fields such as microelectronics, energy storage, catalysis, adsorption, biomedical engineering, and material strengthening. With the increasing demand for porous carbon nanomaterials, many
Zixuan Liu   +6 more
doaj   +1 more source

Composite nanostructured solid-acid fuel-cell electrodes via electrospray deposition [PDF]

open access: yes, 2010
Stable, porous, nanostructured composite electrodes were successfully fabricated via the inexpensive and scalable method of electrospray deposition, in which a dissolved solute is deposited onto a substrate using an electric field to drive droplet ...
Brunelli, Nicholas A.   +4 more
core   +1 more source

Electrochemical Impedance Imaging via the Distribution of Diffusion Times [PDF]

open access: yes, 2017
We develop a mathematical framework to analyze electrochemical impedance spectra in terms of a distribution of diffusion times (DDT) for a parallel array of random finite-length Warburg (diffusion) or Gerischer (reaction-diffusion) circuit elements.
Bazant, Martin Z., Song, Juhyun
core   +2 more sources

Home - About - Disclaimer - Privacy