Synthesis Of Functional Mesoporous Materials And Application Of Adsorption Of Cr(?)

Ordered mesoporous materials were extensive applied in adsorption, separation, catalysis, energy field because of their high Surface Square, chemical stability, controllable and uniform pore diameter. Articles based on the soft-template method, showed a efficient method to synthesis carbon spheres, P-doped mesoporous carbon and vertical oriented mesoporous alumina film by self-assemble of amphipathic block polymer and precursor. The detail contents included:1) Ordered mesoporous carbon spheres had been produced via hydrothermal method under the present of HCl, using Phenol-formaldehyde resin as carbon precursor, F127 as template, ZrOCl2 as assistant. The sample had body-center cubic structure, characterized with TEM(transmission electron microscope), SEM(scanning electron microscope), XRD(X-ray diffraction), N2 Physical adsorption. Mesoporous carbon spheres had high BET surface (813cm3/g). The pore size was 2.3nm. Article investigated the effect of acid concentration, ZrOCl2 amounts, reactant concentration, and hydrothermal time and ethanol amounts on the carbon spheres synthesis. Carbon spheres as adsorbent was used to the removal of Cr(?), which was fitted to pseudo-second-order equation. The mesoporous carbon spheres owned high Cr(VI)removal speed.2) P-doped ordered mesoporous carbon has been successfully synthesized with the Phosphoric acid as catalyst, F127 as soft template, Phenol-formaldehyde resin as carbon precursor. The samples owned hexagonal mesoporous structure characterized with TEM, SEM, XRD, EDS, N2 Physical adsorption. The P element was distributed in carbon bone uniformly. The samples was used to the removing of Cr(VI) in aqueous water. The adsorption was fitted to pseudo-second-order equation. The control step was chemical adsorption. Adsorption was fitted to Langmuir isothermal modal. The unilaminar adsorption process occurred on the uniform surface adsorbent. The removal of Cr(VI) depended on the electrostatic interaction. P element group enhanced the ability of Cr(VI)removing of ordered mesoporous carbon. The sphere shape improved the carbon material's speed of Cr(VI) removal.3) Vertical oriented mesoporous alumina was synthesized on different surfactant via EISA method, with P123 as structure-directing agent, Aluminum isopropoxide as aluminum precursor, hydrochloric acid and citric acid as pH regulator, ethanol as solvent. The article investigated the effects of reactant concentration and different substrate. When molar ratio of ethanol and isopropanol aluminum was 1372:1, the pore of alumina film was ordered hexagonal arrangement characterized through SEM. Carbon film as substrate induced the synthesis of vertical oriented mesoporous alumina. SEM and TEM showed that the channel of carbon-induced synthesis of mesoporous alumina film perpendicular to the substrate. The crucial factor was the pre-treatment of carbon film with P123 ethanol solution.