| Porous carbon materials received extensive attentions due to their largespecific surface area, chemical inertness, good electrical and thermalconductivity. These outstanding physicochemical properties of porouscarbon materials make them have potential application in absorption,catalysis, medicine, sensors and energy resource, etc. To date, numerousporous carbon materials with different morphology and microstructurehave been prepared successfully. How to prepare monodisperse,micrometer-sized, hierarchically porous carbon spheres by controlling theparticle size, dispersity and pore size distribution, however, remains achallenge. For this reason, we present the main contents of this thesis asbelow.Monodisperse, micrometer-sized, hierarchically porous carbon spheres(PCS) were successfully fabricated employing a hard template underhydrothermal condition followed by further carbonization. D-Glucose andN-methyl-D-glucamine (NMGA) modified porous cross-linked polymermicrospheres (Polymer/NMGA) were used as carbon precursor and thetemplate, respectively. The morphology and microstructure of PCS werecharacterized by scanning electron microscopy (SEM), X-ray powderdiffraction (XRD), and nitrogen adsorption-desorption measurements.The monodisperse PCS with colloidal structure have diameter about3.81m and the size of hierarchical pores are3.8nm and37nm.The as-prepared PCS were used as catalyst support and chloroauric acidtetrahydrate were absorbed by PCS for the in situ generation of Aunanoparticles (AuNPs). From the TEM images, we can observe thatAuNPs dispersed in PCS’ pores have the size of15-30nm. Using thereduction of4-nitrophenol (4-NP) by sodium borohydride in aqueous media as a modal reaction, PCS supported AuNPs exhibited high catalyticactivity and stability. |
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