複合奈米纖維不同合成技術及特性探討

Fabrication of Composite Nanofibers by Different Synthesis Methods

10.6409/JMSE.200503.0046

黃裕豪(Y. H. Huang)；陳金銘(J. M. Chen)；謝建德(C. T. Hsieh)；郭蓉蓉(R. R. Kuo)；蘇恆毅(H. Y. Su)

奈米纖維 ； 複合奈米纖維 ； 複合材料 ； composite nanofibers ； template synthesis ； self-assembly monolayer ； plasma sputtering

材料科學與工程

37卷1期（2005 / 03 / 01）

46 - 50

繁體中文

本文主要介紹三種關於複合奈米纖維合成方法，包括自組裝表面修飾、二次模板合成及電漿濺鍍法。自組裝表面修飾主要藉由基材表面處理機制來鍵結所需的奈米顆粒；其製程隨鍵結不同金屬氧化物顆粒而做部分修改以形成奈米碳纖維外接金屬氧化物顆粒之複合材料。二次模板合成其以化學或是物理方法植入第一前軀物(precursor)，可得中空的第一奈米纖維沈積於模板中，再以此一中空奈米纖維爲二次模板，於管狀的第一奈米纖維內部形成第二奈米纖維，即可得奈米級之複合纖維。電漿濺鍍法主要以氧化鋁模板合成高陣列筆直之奈米碳纖維。利用其“中空”特色使其能透過電漿濺鍍方式將欲成長的金屬沈積於奈米碳纖維開口端。再以將奈米金屬溶化，使其延著中空碳管而下充填於管內。這時就形成奈米碳纖維內含金屬之複合材料。本實驗主要目的爲開發不同奈米纖維以提供未來各領域之應用。

Financial support from the Ministry of Economic Affairs in Taiwan under Contract No.(93-EC-17-A-99-R6-0450) n the present work, we developed three novel methods for synthesizing composite nanofibers, including (1) self-assembly monolayer (SAM) surface treatment, (2) secondary template synthesis, and (3) plasma sputtering-based method. SAM surface treatment involves the following processing; acid surface treatment, ionic exchange, and heat treatment, then various nanoparticles with an average diameter of 5 nm such as SNO2, NiO, and RuO2, were well dispersed onto nanotubes surface through a interaction between oxide functional groups and metal ions. In the second method, the first type of precursor can be impregnated with alumina anodic oxide (AAO) template having a well-ordered nanochannels array, and the prepared tubular array is employed as the ”secondary template” after solidify treatment. Then the second-type component is filled with the secondary template, thus, forming the desired tow-components composite nanofibers. Using the plasma sputtering, the nanosized metal can be deposited silt in the open-tipped carbon nanofibers. After heat treatment, the composite nanofibers array can be fabricated. Based on the syntheses mentioned above, the composites nanofibers can applied to different promising fields such as highly-sensitively gas sensors, energy-storage materials, photo devices, and so on.

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