Title page for etd-0724112-175748


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URN etd-0724112-175748
Author Cheng-ying Tsai
Author's Email Address m973100023@student.nsysu.edu.tw
Statistics This thesis had been viewed 5340 times. Download 1197 times.
Department Materials and Optoelectronic Science
Year 2011
Semester 2
Degree Master
Type of Document
Language zh-TW.Big5 Chinese
Title Synthesis of ordered mesoporous metal nanostructures
Date of Defense 2012-06-25
Page Count 92
Keyword
  • metal replica
  • incipient wetness impregnation
  • metal nanowires/silica
  • 3D body-centered cubic (BCC) metal network/silica
  • Abstract In this study, we synthesized amphiphilic block copolymer Poly(ethylene glycol)-b-Poly(ε-caprolactone) (PEO-b-PCL), and the mesoporous silica and phenolic were synthesized by using EISA (evaporation induced self-assembly) strategy. The mesoporous carbon also obtained after carbonization. After incorporating the precursors into the mesoporous channels through incipient wetness impregnation and further hydrogen reduction, 3D body-centered cubic (BCC) metal network/silica, metal nanowires/silica, metal/phenolic, and metal/carbon nanocomposites could be obtained. Moreover, metal replica was obtained through HF etching. Transmission electron microscope (TEM) and the small angle X-ray scattering (SAXS) patterns indicate that the parent ordered mesoporous structure was well-maintained during the synthesis process. The X-ray diffraction (XRD) and selected-area electron diffraction (SAED) demonstrate that Pd and Ag were reduced within the channels of mesoporous materials. The pore size distribution and BET surface area of mesoporous materials and metal/mesoporous materials composite were recorded by N2 isotherm adsorption-desorption experiment. In the future, we expect that the mesoporous metal and mesoporous nanocomposite with specific morphologies behave excellent performance in various applications, such as catalysis, gas sensors, nano electronic/optical devices and medical diagnosis.
    Advisory Committee
  • Ching-Hsuan Lin - chair
  • Chih-Feng Wang - co-chair
  • Ming Chen - co-chair
  • Chih-Feng Huang - co-chair
  • Shiao-Wei Kuo - advisor
  • Files
  • etd-0724112-175748.pdf
  • Indicate in-campus at 2 year and off-campus access at 2 year.
    Date of Submission 2012-07-24

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