Abstract
Two novel mesoporous cellular foams (MCFs) materials with well-defined large and aerogel-like mesostructure were successfully synthesized using tetraethyl orthosilicate as silica source, cyclohexane (CHE) as a swelling agent and triblock copolymer Pluronic P123 and F68 as a template, respectively. The effect of CHE on the expansion of the framework were characterized in detailed by small-angle X-ray diffraction, scanning electron microscopy, transmission electron microscopy and nitrogen adsorption–desorption. The results showed that CHE was an effective swelling agent on the pore size of MCFs. All as-prepared materials were employed as the adsorbent to brominated flame retardants (BFRs) from environmental water samples. The adsorption study indicated the new materials exhibited superior adsorption capacity, the removal efficiencies of MCF-1-1.5 for seven BFRs reached 81.4–95.2 % in industrial wastewater. The recoveries of method were in the range of 86.3–105.7 % for Xiaoqing River sample and 74.6–114.6 % for chemical plant wastewater sample.
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