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標題: | 利用斷鍵-成核-長晶法製備催化反應瓶 Catalytic Polymer Container via Break-Seed-Growth Process |
作者: | Tzu-Yun Huang 黃子芸 |
指導教授: | 廖尉斯(Wei-Ssu Liao) |
關鍵字: | 鈀,奈米粒子,聚合物,鈴木反應,異質催化劑, palladium,nanoparticle,polymer,Suzuki reaction,heterogeneous catalyst, |
出版年 : | 2017 |
學位: | 碩士 |
摘要: | 本研究成功開發出具備可回收與再生性質之催化性奈米粒子鑲嵌聚合物表面。以鈀金屬為例,聚合物表面經氧氣電漿活化後立即浸入鈀之前驅物溶液,便可於表面原位還原生成鈀奈米粒子。於氧氣電漿活化過程中,聚合物表面之化學鍵會發生斷鍵,緊接著於表面生成帶有自由基之活性物種。這些自由基能促使金屬離子於介面上還原產生金屬核,均勻地分布鑲嵌於聚合物之表面上。而隨著持續性之還原沉積,最終於表面將形成單層覆蓋之金屬奈米粒子層。在此所製備之鈀奈米粒子鑲嵌聚對苯二甲酸乙二酯薄膜於鈴木催化反應中可展現極佳的催化效率;並在經過數次催化反應後仍能保有相當的催化活性,且其表面催化活性可藉由氧氣電漿之再處理而重新活化。此外,本研究亦成功開發出具催化活性之微量離心管,可應用於硝基苯酚還原反應中,並具備優越的反應速率常數;此結果同時展現出本製備方法可使用於不同材料或不同基材型貌之多樣性。藉由此具備簡單與低成本之表面修飾方法,高度可重複使用之催化反應瓶製作將不再是一項困難的課題。 Catalytic nanoparticle-embedded polymer surface for organic synthesis with recyclable and regenerative properties is fabricated. The nanoparticles, e.g. palladium (Pd), are generated in situ on the oxygen plasma activated surface when encountering the precursor solution. The activation process initiates surface chemical bond breakage and produces radical species on the substrate. These radicals induce metal ion reduction and generate numerous metal seeds embedded in the surface. Continuous metal deposition advances on the surface-embedded seeds and a monolayer of metal nanoparticle is grown. The prepared Pd nanoparticles decorated polyethylene terephthalate (PET) surface can catalyze Suzuki cross coupling reaction at mild conditions in aqueous solution with high efficiency. Decay of the catalytic activity is negligible within a few uses and the surface can be regenerated with a simple O2 plasma treatment. In addition, a catalytic microcentrifuge tube is fabricated to catalyze the reduction of 4-nitrophenol (4-NP) with a high rate constant (k), indicating diversity of this approach to different materials with various morphology. Upon this simple and low-cost surface modification strategy, a promising avenue to highly reusable catalytic polymer reactors is widely opened. |
URI: | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/77939 |
DOI: | 10.6342/NTU201702322 |
全文授權: | 有償授權 |
顯示於系所單位: | 化學系 |
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