Title page for 953204056


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Student Number 953204056
Author Bo-rong Song(宋柏融)
Author's Email Address No Public.
Statistics This thesis had been viewed 1413 times. Download 797 times.
Department Chemical and Materials Engineering
Year 2007
Semester 2
Degree Master
Type of Document Master's Thesis
Language zh-TW.Big5 Chinese
Title Growth of carbon nanotube on well-aligned silicon nanograss
Date of Defense 2008-07-07
Page Count 125
Keyword
  • carbon nanotube
  • nanograss
  • Abstract We used a thermal CVD with C2H4 carbon sources to grow CNTs at high temperature. Nickel nanoparticles were used as the catalyst, which can be held in water or ethanol solution, and then spread on a substrate by using dip-coating and drop-coating methods. The substrates include hydrophilic and hydrophobic nanograss. The parameters of solution Chemical property, growth temperature, and hydrogen flow rate were controlled to investigate the CNT morphology.
     The results show that using dip-coating method to grow CNTs on the hydrophilic nanograss will make nanoparticles aggregation and lead to the variations in CNT diameter. The nanoparticles can be dispersed as molybdenum (Ⅱ) acetate was dissolved into the solution, which will grow CNTs with smaller diameter, but the amount of amorphous carbon
    compound will be greater also. The CNT surface can be transferred to a superhydrophobic state as we deposited Pt film on it.
     The surface energy of solution will affect the amount of CNTs when we use a dip-coating method to grow CNTs on the hydrophobic nanograss. The amount of CNTs is greater by ethanol than by water.In addition, using drop-coating method to grow CNTs on the hydrophobic nanograss will make smaller area and wider distribution of CNT diameters than on the silicon wafer.
     More interesting, a lot of CNTs were grown at 750 ℃ by depositing a PTFE (polytetrafluoroethylene) film on the hydrophilic nanograss and treating it in the thermal CVD, which demonstrates that we have developed a method to grow CNTs without metal catalyst.
    Table of Content 摘要i
    英文摘要ii
    誌謝iii
    總目錄iv
    圖目錄vii
    表目錄xiii
    第一章 緒論1
    1-1 前言1
    1-2 研究動機4
    第二章 理論與文獻回顧7
    2-1 準直矽奈米草結構形成機製7
    2-2 疏水與親水的表面結構10
    2-3 奈米碳管結構13
    2-4 奈米碳管製備方法15
    2-5 奈米碳管的形成機製19
    2-5.1 熱化學氣相沈積法奈米碳管生長機製19
    2-5.2 氫氣對奈米碳管生長的影響21
    2-6 奈米結構上生長奈米碳管21
    2-6.1 金屬催化劑沈積的方法21
    2-6.2 於親水性奈米草上生長奈米碳管24
    2-6.3 於疏水性奈米草上生長奈米碳管26
    2-6.4以PTFE 薄膜生長奈米碳管27
    第三章 實驗方法與流程30
    3-1 實驗材料與設備30
    3-1.1 基板材料與化學品30
    3-1.2 製程設備30
    3-1.3 分析儀器31
    3-2 實驗流程33
    3-3 實驗步驟34
    3-3.1 準直矽奈米草的製作34
    3-3.2 基板表面親疏水性質改質34
    3-3.3 奈米碳管於親水性矽奈米草成長35
    3-3.4 奈米碳管於疏水性矽奈米草成長37
    3-3.5 奈米碳管與基板的分析37
    第四章 結果與討論40
    4-1 親水性奈米草成長奈米碳管的研究40
    4-1.1 以奈米鎳粉體成長奈米碳管40
    4-1.2 醋酸鉬對奈米碳管成長的影響52
    4-2 疏水性奈米草成長奈米碳管的研究71
    4-2.1 以浸泡法成長奈米碳管71
    4-2.2 以液滴法成長奈米碳管76
    4-2.3以PTFE 薄膜生長奈米碳管82
    第五章 結論99
    參考文獻102
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    Advisor
  • Cheng-Tung Chou(周正堂)
  • Jiann Shieh(謝健)
  • Files
  • 953204056.pdf
  • approve in 2 years
    Date of Submission 2008-07-22

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