Quick high-temperature hydrothermal synthesis of mesoporous materials with 3D cubic structure for the adsorption of lysozyme
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2015
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Lawrence, G.
Baskar, A.V.
El Newehy, M.H.
Cha, W.S.
Al Deyab, S.S.
Vinu, A.
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Science and Technology of Advanced Materials, 2015; 16(2):1-11
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Three-dimensional cage-like mesoporous FDU-12 materials with large tuneable pore sizesranging from 9.9 to 15.6 nm were prepared by varying the synthesis temperature from 100 to200 °C for the aging time of just 2 h using a tri-block copolymer F-127(EO106PO70EO106) as thesurfactant and 1,3,5-trimethyl benzene as the swelling agent in an acidic condition. Themesoporous structure and textural features of FDU-12-HX (where H denotes the hydrothermalmethod and X denotes the synthesis temperature) samples were elucidated and probed using xraydiffraction, N2 adsorption, 29Si magic angle spinning nuclear magnetic resonance, scanningelectron microscopy and transmission electron microscopy. It has been demonstrated that theaging time can be significantly reduced from 72 to 2 h without affecting the structural order ofthe FDU-12 materials with a simple adjustment of the synthesis temperature from 100 to 200 °C.Among the materials prepared, the samples prepared at 200 °C had the highest pore volume andthe largest pore diameter. Lysozyme adsorption experiments were conducted over FDU-12samples prepared at different temperatures in order to understand their biomolecule adsorptioncapacity, where the FDU-12-HX samples displayed high adsorption performance of 29 ìmol g-1in spite of shortening the actual synthesis time from 72 to 2 h. Further, the influence of surfacearea, pore volume and pore diameter on the adsorption capacity of FDU-12-HX samples hasbeen investigated and results are discussed in correlation with the textural parameters of theFDU-12-HX and other mesoporous adsorbents including SBA-15, MCM-41, KIT-5, KIT-6 andCMK-3.
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Copyright 2015 Institute of Physics. Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence.