Synthesis and physical–chemical properties of N-containing nanoporous carbons
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文摘
Meso- and microporous nitrogen-containing carbons, characterized by homogeneous meso- (V?=?1.00?cm3/g, D?=?3.5?nm) and microporous (V up to 0.26?cm3/g, D?≈?.5?nm) structure, and the presence of basic groups (up to 1.7?mmol/g) were obtained by matrix and bulk carbonization of sucrose in the presence of melamine or urea. It is shown that obtained N-containing microporous carbons possess good interfacial capacitance (0.21?F/m2) and they are characterized with stability during repeated charge–discharge cycles. Synthesized N-containing nanoporous carbons show higher adsorption of carbon dioxide (up to 6.3?mmol/g at ?0?°C) than the samples without nitrogen (up to 3.9?mmol/g at ?0?°C).
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