Structural characterization of mesoporous silica nanofibers synthesized within porous alumina membranes.

Structural characterization of mesoporous silica nanofibers synthesized within porous alumina membranes.
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多孔氧化铝膜内合成的介孔二氧化硅纳米纤维的结构表征

DOI:
10.1007/s11671-009-9389-4
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发表时间:
2009-07-14
影响因子:
--
通讯作者:
Zheng Y
Zheng Y
中科院分区:
材料科学3区
文献类型:
--
作者:
Gong Z;Ji G;Zheng M;Chang X;Dai W;Pan L;Shi Y;Zheng Y

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采用溶胶-凝胶法在阳极氧化铝模板的孔内合成了介孔二氧化硅纳米纤维。透射电子显微镜研究表明,结构导向剂(EO_(20)PO_(70)EO_(20))的浓度对介孔二氧化硅纳米纤维的介孔结构有显著影响。当P123浓度为0.15 mg/mL时,可形成纳米孔道沿着介孔二氧化硅纳米纤维轴向排列的样品。当P123浓度增加到0.3 mg/mL时,可以获得具有圆形层状介观结构的样品。提出并讨论了P123浓度对介孔二氧化硅纳米纤维介观结构的影响机理。
Mesoporous silica nanofibers were synthesized within the pores of the anodic aluminum oxide template using a simple sol–gel method. Transmission electron microscopy investigation indicated that the concentration of the structure-directing agent (EO20PO70EO20) had a significant impact on the mesostructure of mesoporous silica nanofibers. Samples with alignment of nanochannels along the axis of mesoporous silica nanofibers could be formed under the P123 concentration of 0.15 mg/mL. When the P123 concentration increased to 0.3 mg/mL, samples with a circular lamellar mesostructure could be obtained. The mechanism for the effect of the P123 concentration on the mesostructure of mesoporous silica nanofibres was proposed and discussed.
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发表时间: 1997-10-01
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