Effect of hydration and dehydration on the properties of SBA-15 layer studied by humidity scanning QCM-D

摘要: Surface deposited layers of mesoporous silica particles could function as support for bio-sensing or drug release applications. It is crucial to control the surface deposition process and employ relevant techniques characterize properties on surface. Here, we deposit SBA-15 native cationic surfaces hydration dehydration by employing a novel method based humidity scanning quartz crystal microbalance with dissipation (HS QCM-D). platelets are mesopores oriented parallel normal using drop deposition. SEM shows monolayer surface, which established stable. Water sorption-desorption isotherms layer from HS QCM-D compared water sorption calorimetry nitrogen bulk material. We demonstrate that provides results in good agreement obtained reference methods. The retained during unaffected presence In addition, fast technique requires significantly lower amount material (∼5000 times) experiments complete characterization pore size distribution SBA-15.