Controlling the Wall Thickness and Pore Size of SBA-15 by Using PPG and PEG as Additives

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Abstract:

Ordered mesoporous silica SBA-15 with controlled pore size and wall thickness was synthesized using polypropylene glycol (PPG) and polyethylene glycol (PEG) as different additives. The final samples were characterized by low-angle X-ray diffraction, N2 adsorption-desorption and transmission electron microscopy. The SBA-15 used PPG or PEG as additive all could maintain the two-dimensional hexagonal structure. The addition of PPG could expand the pore size and decrease the wall thickness and the addition of PEG could reduce the pore size and increase the wall thickness of SBA-15.

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Advanced Materials Research (Volumes 152-153)

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1514-1518

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October 2010

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© 2011 Trans Tech Publications Ltd. All Rights Reserved

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