Fabrication of Carbon/Titania/Bentonite Monolith for Architecture and their Physicochemical Properties

摘要

In this study, we used activated carbon (AC) and titanium oxysulfate as titanium precursor to prepare carbon/titania composites, and then mixed with bentonite with different ratios to make carbon/titania/bentonite monolith used in architecture brick by using phenolic resin (PR) as a bonding agent. The physicochemical properties of prepared composites were analyized by BET surface area, scanning electron microscopy (SEM), X-ray diffraction (XRD) and energy dispersive X-ray analysis (EDX). Moreover, to determine the selfcleaning effect of carbon/titania/bentonite monolith, we used the methylene blue (MB, C16H18N3S-Cl·3H2O) in an aqueous solution under the irradiation of visible light. Accordingly, all of samples have excellent degradation of MB solution. Furthermore, it is observed that the composites with sunlight irradiation had a greater effect on E. coli than any other experimental conditions.