Grafting of TMCS on the walls of periodical mesoporous silica of MCM-48, MCM-41 and FSM-16 type: application to phenol adsorption

Grafting of TMCS on the walls of periodical mesoporous silica of MCM-48, MCM-41 and FSM-16 type: application to phenol adsorption. Obtaining materials with a structuring that is perfectly controlled and objects of nanometer size may have interesting applications in the fields of electronics, environment, biology or medicine. Therefore, properties of three mesoporous materials have been studied using adsorption isotherms of phenol at 25 degrees C. Two of these materials have a hexagonal structure of the type MCM-41 and FSM-16, whereas the third one has a cubic structure of the type MCM-48. This helped to determine the type of adsorption; it obeys both the Freundlich isotherm and the Langmuir one. The experiments of phenol's adsorption show that the MCM-48 grafted (G) with TMCS is a good adsorbent with maximum adsorption capacities respectively equal to 22,4 x 10(-3) g/L and a percentage of adsorption equal to 72% at 25 degrees C.