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A new route has been developed for the fabrication of porous carbon from corn starch by a two-step process: hydrothermal carbonization and chemical activation with H3PO4. The as-prepared porous carbons were characterized by scanning electron microscopy, powder X-ray diffraction, fourier transform infrared spectra, C, H, N, O, S analyzer, N2 adsorption, zeta potential measurements, cyclic voltammetry...
Two useful materials (activated carbon and liquid compound fertilizer) were obtained from rice husk by a simple route which combined the processes of H3PO4 activation and KOH etching. The resulting activated carbon exhibited excellent performances, including low ash content, large surface area, high adsorption and electrochemical performances. The advantage of this route is that the waste water produced...
The adsorption of Rhodamine-B (RhB) onto treated rice husk-based activated carbon was investigated in this paper. The influences of initial RhB concentration, temperature and pH on dye adsorption were analyzed. Initial RhB concentration and temperature played important roles in this adsorption process, and pH had a little effect on RhB adsorption. Adsorption kinetics, equilibrium and thermodynamics...
A comparative study of various hydrochar-based porous carbons was carried out. These porous carbons, synthesized from biomass by H 3 PO 4 , NaOH and KOH activation, were examined for use in supercapacitors. The micropores and mesopores had been introduced into the hydrochar simultaneously. Porous carbons exhibited different electrochemical performance due to the difference of their...
SnO nanoplates, nanosheets and nanorings have been synthesized by a simple and facile approach. By changing the reaction temperature, SnO nanoplates would become to individual SnO nanosheets. Complex nanostructures disassemble to its basic unit. When reaction temperature is much higher, novel SnO nanorings by assemble of nanosheets appear. Assemble processes and disassemble processes are observed...
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