Characterization of Mesoporous Silica and its Application as an Adsorbent for Benzene Sensing

• DOI: 10.4028/www.scientific.net/ssp.302.107
• Publication Date: 2020-04-14T06:13:51Z
• Authors: Bralee Chayasombat; Pitchaya Muensri; Yoothapong Klinth...; Kroekchai Inpor; Onuma Santawitee; Helene Debeda; Chanchana Thanach...; Seeroong Prichanont
• Keywords: Surface Modification; Gravimetric analysis; Mesoporous organosilica; Thermogravimetric analysis

Mesoporous silica (MPS) is a porous material with various pore structures. In this study, mesocellular foam (MCF) was synthesized and functionalized by hexamethyldisilazane (HMDS) to study effects of surface chemistry on benzene adsorption capability. Physical chemical properties pristine MCFs were characterized compared. Scanning transmission electron microscopy showed that the complex structures retained after functionalization at relatively high temperature (573K). TGA FTIR results led reduction water adsorbed surfaces MCF. The improved compared MCF optimum HMDS:SiO 2 molar ratio 1.5. amount has linear relationship concentration in environment. This enables quantitative detection using as sensing materials resistive-type or gravimetric-type gas sensors.