科研之友
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摘要
Ordered plugged SBA-15 mesoporous materials were successfully hydrothermal synthesized using equal amount of TEOS as silica sources, a little amount of P123 and different amount of PVA as co-templates agents as preparing of SBA-15. As-prepared materials were characterized by X-ray diffraction, nitrogen adsorption-desorption technique, transmission and scanning electron microscope. Results show that as-synthesized plugged SBA-15 materials exhibit ordered mesoporous characteristics and different plugged pores, viz, partially plugged or completed plugged, coexist in the mesopores channels; the pore sizes and plugged types can be expediently adjusted by simply changing addition amount of PVA; the adsorption-desorption isotherms of as-synthesized materials present a typical two-step desorption branch.
