Results 71 to 80 of about 177 (113)
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Preparation of Porous Carbon Material by Carbonizing Polyacrylonitrile Microspheres
Applied Mechanics and Materials, 2012PAN microspheres were crosslinked with divinyl benzene (DVB) and styrene (St), and then pre-oxidized under atmospheric pressure, porous carbon microspheres were produced by carbonizing the pretreated microspheres under nitrogen protection. Morphology and structure characterizations of the materials were performed by employing scanning electron ...
Yun Long Rong +8 more
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Chemical Engineering Journal, 2019
Abstract In this study, novel mesoporous composites of goethite/carbon microspheres (α-FeOOH/CMSs) and akaganeite/carbon microspheres (β-FeOOH/CMSs) were successfully prepared and employed to remove Cr(VI). Scanning electron microscopy and transmission electron microscopy of α-FeOOH/CMSs and β-FeOOH/CMSs composites indicated α-FeOOH and β-FeOOH ...
Long Zhang, Fenglian Fu, Bing Tang
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Abstract In this study, novel mesoporous composites of goethite/carbon microspheres (α-FeOOH/CMSs) and akaganeite/carbon microspheres (β-FeOOH/CMSs) were successfully prepared and employed to remove Cr(VI). Scanning electron microscopy and transmission electron microscopy of α-FeOOH/CMSs and β-FeOOH/CMSs composites indicated α-FeOOH and β-FeOOH ...
Long Zhang, Fenglian Fu, Bing Tang
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Preparation and characterization of carbon cryogel microspheres
Carbon, 2002Abstract Carbon cryogel microspheres (CC microspheres) were successfully synthesized by an inverse emulsion polymerization of resorcinol with formaldehyde, followed by freeze drying and pyrolysis in an inert atmosphere. CC microspheres were characterized by scanning electron microscopy, elemental analysis and various gas adsorption measurements.
Yamamoto, T +4 more
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Synthesis and characterization of carbon hollow microspheres
Journal of Materials Science, 2011A facile approach was developed for synthesis of carbon hollow microspheres (CHM) via carbonization of the hollow polymer microspheres prepared from polymerization in the presence of l-lysine acted as in situ template. The physical and chemical structures of the samples were investigated by X-ray powder diffraction, Raman spectrum, scanning electron ...
Quan Jin +5 more
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Surface modification of carbon microspheres by KMnO4
新型炭材料, 2010Carbon microspheres (CMSs) were synthesized by chemical vapor deposition in an Ar atmosphere using deoiled asphalt as carbon source. KMnO4 aqueous solutions with different concentrations were used to oxidize the CMSs to form MnO2-coated CMSs (MnO2/CMS composites) and H2C2O4 solution was used to wash the MnO2/CMS composites to remove MnO2 to obtain ...
LIUXuguang +3 more
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Bonelike apatite formation on carbon microspheres
Materials Letters, 2007Abstract Carbon microspheres with a diameter of 2 μm were prepared by hydrothermal process. The apatite-formation ability of the carbon microspheres was evaluated by soaking them in a simulated body fluid (SBF) for 5 and 10 d and apatite-formation mechanism was also analyzed. The result showed that bonelike apatite was formed on the surface of carbon
Wu, Chengtie, Chang, Jiang
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Fluororganic Groups Grafted on Carbon Microspheres
2019 IEEE 9th International Conference Nanomaterials: Applications & Properties (NAP), 2019Fluorine-containing carbon microspheres were prepared by treatment with dichlorodifluoromethane, 1,1,1,2- tetrafluorethane and products of polytetrafluoroethylene (PTFE) pyrolysis at elevated temperature. The total fluorine content in the fluorinated carbon microspheres is extremely high it varies from 2.2 to 6.9 mmol/g.
A. N. Zaderko +8 more
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Hollow Carbon Nanotube Microspheres and Hemimicrospheres
The Journal of Physical Chemistry C, 2009The layer-by-layer (LBL) assembly of multiwalled carbon nanotubes (MWNTs) and diazoresin (DR) is realized via the electrostatic interactions on planar substrates and polystyrene (PS) microsphere templates. The successful planar and spherical growth of DR/MWNT multilayers is monitored by scanning electron microscopy (SEM) and UV−vis spectrophotometry ...
Mingxue Tang +3 more
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Carbon nanotubes prepared from polymer microspheres by spinning and carbonizing
Molecular Crystals and Liquid Crystals, 2002Multi-wall carbon nanotubes (CNTs) with diameters between 10 nm and 20 nm were prepared by melt spinning, stabilizing and carbonizing of fine core/shell-1/shell-2 polymer microspheres. Microspheres were synthesized by three-steps soap free emulsion polymerization of methylmetacrylate (MMA) and acrylonitrile (AN) using potassium persulfate (KPS) as a ...
Hulicova, Denisa +4 more
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LOW CARBON BINDERS WITH ASH MICROSPHERE
SGEM International Multidisciplinary Scientific GeoConference� EXPO ProceedingsConstruction technologies are among the most critical in terms of negative impact on the environment. Burnt binders, primarily cement and air-lime, emit significant volumes of carbon dioxide and man-made heat. At the same time, a large amount of hydrocarbon fuel is also consumed for their firing. Therefore, to achieve sustainable development goals, the
Victoria Petropavlovskaya +4 more
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