本論文首先提出簡單有效的方法製備thin film metallic glass/ polyacrylonitrile氣體分離複合薄膜，Zr60Cu25Al10Ni5基金屬玻璃在不加熱的條件下以RF濺鍍方式，沉積於PAN基材膜表面形成複合薄膜，FE-SEM、XRD和TGA分別被用於鑑定薄膜的表面型態、結晶性及熱穩定性。氣體滲透裝置(GPA)與微天秤(Cahn)則用於量測薄膜的氣體透過與吸附行為，可調控單一能量慢速正電子束分析顯示TFMG選擇層厚度與層內孔洞尺寸有密切關係，氮氣透過薄膜的能力優於氧氣及二氧化碳，氮氣和孔壁間的吸附較弱和氮氣在孔洞中快速擴散造成此結果。薄膜最佳的氮氣透過係數為4288GPU，N2/CO2選擇係數接近2，本研究顯示TFMG/PAN複合薄膜在氮氣選擇的應用具有發展潛力。
本論文第二部分探討Zr60Cu25Al10Ni5非結晶合金粉末在離子液體中的不尋常溶解行為，鋯基金屬玻璃粉末被溶解於1-Butyl-3 methyl imidazolium tetrafluoroborate ([BMIM][BF4])離子液體中，SEM、XRD、DSC、FTIR和XPS被用於鑑定所製備的材料和其特性，TFMG-IL溶液中的顆粒大小與化學偏移分別使用動態光散射(DLS)和1H及13C核磁共振量測。TFMG/BMIM[BF4]溶液中顆粒平均粒徑為100-500 nm，強酸性離子液體和靜電吸引力促使離子液體進入非結晶合金內部導致溶解行為。整體而言，本論文提出薄層金屬玻璃在不同離子液體(BMIM[BF4]和BMIM[Cl])中的不尋常溶解行為，同時亦探討了TFMG特異的氣體分離行為。

This Ph.D thesis presents a simple and efficient method to produce a thin film metallic glass/ polyacrylonitrile composite membrane for gas separation applications. Zr60Cu25Al10Ni5 -based thin film metallic glass (TFMG) was coated on polyacrylonitrile (PAN) substrate to form composite membrane successfully using RF sputter deposition without external heating. The membranes surface morphology, crystallography, and thermal stability were characterized using FE-SEM, XRD, and TGA, respectively. Gas permeation performance ability of the membranes were investigated by gas permeation analyzer (GPA) and microbalance (Cahn) respectively. Variable monoenergy slow positron beam analysis revealed a strong correlation between the pore size and coating thickness of TFMG active layers. The resulting membranes were more permeable to N2 than to CO2 or O2 due to weaker interactions with the pore walls and faster diffusion. The best N2 performance was 4288 GPU with ideal selectivity of nearly 2.0 for N2/CO2. We demonstrated the considerable potential of TFMG/PAN composite as a membrane for nitrogen selective applications.
In the second part of this study, the unusual dissolution behavior of an amorphous Zr60Cu25Al10Ni5 – powder alloy in ionic liquid has been investigated. Zr-based TFMG powders were dissolved in 1-Butyl-3 methyl imidazolium tetrafluoroborate ([BMIM][BF4])-ionic liquid. Material prepared and were characterized by SEM, XRD, DSC, FT-IR and XPS spectroscopy. The particle size and chemical shift present in TFMG-IL solutions were detected by dynamic light scattering (DLS) and 1H and 13C NMR. Therefore, Metallic glass powders were dissolved in BMIM[BF4], shows the formation of nanoparticles having a mean size of touching in the range of 100-500 nm. Consequently, the strong acidity nature of ILs and the Coulombic forces facilitate the solvent molecules with metallic ions out of their amorphous alloy that drive the dissolution performance. Overall, this dissertation provides, an over view of selective dissolution behavior of TFMG incorporated with widely used ionic liquids such as BMIM[BF4], BMIM[Cl] and proposes an effective way to enhance the performance of gas separation behavior of the novel material.

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