導電高分子/奈米碳管混合基板應用於製備高效能壓電氧化鋅奈米柱陣列之研究

Fabrication of Highly Efficient Piezoelectric ZnO Nanorod Arrays by Using Conducting Polymer/Carbon Nanotube Hybrid substrates

翁于軒(Yu-Hsuan Weng)

指導教授 ： 程耀毅

國立臺北科技大學/工程學院/有機高分子研究所/碩士(2013年)

摘要

本研究中利用濕式化學法，將氧化鋅奈米柱合成於聚二氧乙基塞吩/多壁奈米碳管高分子之奈米複合材料上。本研究分為三部分，第一部份為快速成膜法，利用原位氧化聚合來製備聚二氧乙基塞吩導電薄膜，並探討經由不同酸化處理的奈米碳管對聚二氧乙基塞吩薄膜導電度之影響；第二部份我們使用醋酸鋅和鹼液進行反應，來製備奈米級氧化鋅粒子溶液，再多次旋轉塗佈於基板上使薄膜表面佈滿氧化鋅種子層；第三部份為氧化鋅奈米柱之製備，使用水熱法來生長氧化鋅奈米柱，於預先塗佈有氧化鋅種子層之聚二氧乙基塞吩薄膜上；並討論基板對聚二氧乙基塞吩/氧化鋅複合薄膜的表面型態和壓電性質之影響。
在預先塗佈有種子層之基板上，可得到具有纖鋅礦結構及沿(002)方向結晶的種子層，此有助於生長垂直排列六角柱狀結構之氧化鋅奈米柱。最後使用OM來觀察奈米碳管在聚二氧乙基塞吩薄膜中的分散程度。藉由XRD鑑定氧化鋅之晶型結構，並用SEM與AFM觀察分析此複合材料的表面型態和壓電性質。

關鍵字

多壁奈米碳管(MWNTs) ； 氧化鋅奈米柱 ； 聚二氧乙基塞吩(PEDOT)

並列摘要

In this study, ZnO nanorods have been synthesized via wet chemical method on PEDOT/MWNTs polymer nanocomposite materials. The study is divided into three parts. First, PEDOT conductive film was prepared by the method of “In situ oxidative polymerization”. The effect of conductivity of different acid-treated carbon nanotubes in the PEDOT film was investigated. Second, we use alkalis to react with zinc acetate to prepare nanoscale ZnO particles in solution, which were spin coated on the substrate several times so that it can be covered with ZnO seed layers. Finally, we prepared ZnO nanorods by using hydrothermal method on PEDOT film precoated with ZnO seed layers. The effects of substrates on the morphology and piezoelectricity of PEDOT / ZnO composite films were discussed.
On the substrates pre-seeded by ZnO seed solution with good wurtzite structure and preferred orientation along the (002) direction (c-axis), which ZnO nanorods can be vertically oriented with respect to the substrate as hexagonal pillars. Finally, we use OM to observed the dispersion of carbon nanotubes in PEDOT film. The crystal structure of ZnO was identified by XRD. The surface morphology of the composite material and piezoelectric properties was observed by SEM and AFM.

並列關鍵字

Multi-wall carbon nanotubes(MWNTs) ； ZnO nanorod ； poly(3,4-Ethylenedioxythiophene) (PEDOT)

參考文獻

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[17] 成會明，奈米碳管Carbon nanotubes，五南圖書出版社，2004。

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