Preparation, Characteristic And Application Of Porous Carbon Materials

Porous carbon materials with large surface area, uniform pore structure, superior chemical property and promising thermal stability, have attracted a great deal attentions in recent years for the several applications such as adsorption, catalysis and electrochemistry el al. As a result, a series of porous carbon materials have been developed with various mesostructure(p6mm, Ia3 d, Im3m) and morphology(rods, spheres, fibers and monoliths).In this paper, using the phenolic resin and ionic liquid as carbon source, hierarchical porous carbon materials can be synthesized by simple impregnation and encapsulating methods. The results are showed as follows:1) The porous carbon materials were synthesized via a rapid and facile hard template method, in which the precursor solution of rodlike SBA-15 was directly used as the template to be mixed with the carbon source of phenol resol. The resulting porous carbon material was rodlike and its order mesoporous structure was casted from the original structure of SBA-15 with 2D hexaganol(p6mm). The porous carbon material with well-defined mesostructure and high surface area(795 m2g-1) favor the adsorption of large dye molecules of MO, AF and MC from aqueous medium, and behaved a distinct performance for the decoloration of tinctorial wastewater.2) The nitrogen doped graphitic porous carbon nanotubes were synthesized by a template-free procedure which using 3-(4-vinylbenzyl)-1-vinylimidazolium chloride ionic liquid monomers or polymers as carbon precursors, K3[Fe(CN)6] as the catalyst. Here, we studied that the carbonization temperature and the quantity of the catalyst impacted to the results. It was found that the obtained material with hollow nanotubes and uniform graphitization when the carbonization temperature was 900 °C and the quantity of catalyst was 0.8 g. After that, join the 5 nm SiO2 to add the surface area. The adsorbents exhibited good capture performances for static CO2 adsorption.3) A facile route is employed to prepare monolith porous carbon material via a one-pot which using user-friendly hexamethylenetetramine as nitrogen and carbon source and triblock copolymer F127 and P123 as template. The carbon material with nitrogen doping(2.86%) which is used as adsorbent for acid gas CO2 adsorption. Furthermore, we also introduce Fe(NO3)3·9H2O into the template and carbon precursor, that to get the material with good graphene. The N-doped carbon monoliths displayed a great potential to be used for electrochemical application.