A simple and fast sonication procedure to remove surfactant templates from mesoporous MCM-41

Ultrasonics Sonochemistry
Shaghayegh Jabariyan, Mohammad A Zanjanchi

Abstract

We demonstrate a sonication procedure for the removal of structure-directing micellar templates from mesoporous MCM-41. The method uses a 28 KHz ultrasound in an alcoholic solvent for disrupting micellar aggregation of the surfactant molecules, cetyltrimethylammonium bromide, which have filled the pores of the as-synthesized MCM-41. The majority (93%) of the surfactant molecules are removed out from the powder MCM-41 within a 15 min one-step sonication at a moderate temperature of 40°C. The structural and textural characterization techniques reveal that the resulted surfactant-free MCM-41 exhibits higher features compared to that of those obtained using the conventional calcinations approaches. The surfactant molecules are released into alcohol and can be recovered for reuse. This study provides an easy, cost-effective, mild and useful method for template removal from mesoporous materials at conventional conditions.

References

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Feb 25, 2009·Ultrasonics Sonochemistry·Ashkan MadadlouDavid Sheehan
Jul 4, 2009·Langmuir : the ACS Journal of Surfaces and Colloids·Jie WangYue Zhao

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Citations

Apr 25, 2018·Artificial Cells, Nanomedicine, and Biotechnology·Legha AnsariBizhan Malaekeh-Nikouei
Feb 15, 2013·Chemical Society Reviews·Corine GérardinBénédicte Lebeau
Sep 4, 2018·Langmuir : the ACS Journal of Surfaces and Colloids·Jiayu LeongHyunjoon Kong

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