本論文的研究目的為製備銅氧化物複合纖維 (CuxOy fibers)，並探討藉由兩種不同能量的後處理方式: 高溫爐鍛燒及氬氣微波電漿，控制不同溫度、與微波電漿處理時間，以製備不同表面型態、晶體結構的CuxOy fibers。在分析方面，以FE-SEM、XRD、XPS、Raman spectroscopy、及TGA，探討所製備CuxOy fibers的表面型態、晶體結構、表面化學元素組成與結構鑑定，熱穩定及分解性質等材料性質。
本論文製備CuxOy fibers，共有三部分的研究應用：首先，應用CuxOy fibers於抗菌實驗，將製備的CuxOy fibers分別對於大腸桿菌及金黃色葡萄球菌進行抗菌分析，以Agar盤之抑菌圈，對CuxOy fibers抗菌活性進行討論。實驗結果顯示，在細菌培養6小時的情形下，利用微波電漿後處理300秒的CuxOy fibers對於金黃色葡萄球菌具有較佳的抗菌性，其抑菌圈為20.5毫米。此外，將金黃色葡萄球菌的培養時間延長至10小時，抑菌圈則增大為22.4毫米，意謂利用微波電漿製備的CuxOy fibers具有長時間的抗菌效果。另一方面，利用400、500、600°C高溫鍛燒後處理的CuxOy fibers，在細菌培養6小時的情形下，無抑菌圈產生。然而，培養10小時的情形下，利用高溫爐鍛燒後處理600°C的CuxOy fibers，對於金黃色葡萄球菌具有較佳的抗菌性，其抑菌圈為17.8毫米，將此結果與利用微波電漿製備的CuxOy fibers對細菌的抑菌圈相比較，可發現經過微波電漿後處理的CuxOy fibers具有較高的抗菌能力。
本論文製備CuxOy fibers的第二項應用為光催化觸媒，藉由光催化後之CuxOy fibers可降解甲基橙與4-硝基苯酚，因此可評估CuxOy fibers的光觸媒活性。結果顯示，相較於利用熱處理製備CuxOy fibers發現，透過微波電漿後處理210秒的CuxOy fibers，對於甲基橙與4-硝基苯酚有較快速之降解能力。另外，與文獻的光觸媒催化降解甲基橙的效率相比較，可發現本研究製備的CuxOy fibers除了具有較高的降解效率，在製備步驟上也較為簡單與省時。此外，針對添加不同濃度雙氧水對於4-硝基苯酚之降解效率結果中，可發現在微波電漿後處理210秒的CuxOy fibers之光觸媒催化下，添加雙氧水濃度為30 mM時，有最佳之降解效率80.3 %。
本論文製備CuxOy fibers的第三項應用為超級電容的活性材料，以發泡鎳為基材，並添加CuxOy fibers，透過電化學的循環伏安法計算超級電容的比電容量。結果顯示，在添加不同溫度鍛燒後處理的CuxOy fibers，其中以鍛燒600°C的超級電容之比電容量較高，為404.0F/g。另一方面，在添加不同處理時間之微波電漿後處理的CuxOy fibers，當處理時間為210秒時，超級電容有最高的比電容量，為581.2 F/g。此外，相較於文獻之比電容量，可發現微波電漿後處理210秒的CuxOy fibers之超級電容，除了具有較高的比電容量，在測試時使用的電解質濃度也相對較低，為2 M KOH。因此，本研究製備的CuxOy fibers有極大之潛力作為超級電容的活性材料。

In this thesis, copper oxides composite nanofibers (CuxOy fibers) were fabricated by post-treatment of thermal energy and microwave plasma. In the preparation of CuxOy fibers, 2 types of method, calcination and microwave-induced argon plasma, were used as post-treatment to convert the precursor of Cu(NO3)2 into copper, cupric oxide (CuO) and cuprous oxide (Cu2O) on nanofibers. Furthermore, different temperature of calcination and treatment time of argon microwave plasma to prepare the different surface morphology and crystallinity of CuxOy fibers. The physical characteristics of CuxOy fibers were studied by Scanning Electron Microscope (SEM), X-Ray Diffraction (XRD), Electron Spectroscopy for Chemical Analysis (ESCA), Raman spectrometry, Thermogravimetry Analysis (TGA).
For the applications, in the first part, antibacterial tests against Escherichia coli (E.coli) and Staphylococcus aureus (S.aureus) were performed by measuring inhibition zone of different post-treated CuxOy fibers on Agar plate. The results showed that the prepared CuxOy fibers with argon microwave plasma treated 300 s showed better anti-S.aureus activity with the inhibition zone of 20.5 mm. On the other hand, the inhibition zone of prepared CuxOy fibers with argon microwave plasma treated 300 s against S.aureus increased from 20.5 mm to 22.4 mm with increasing of incubation time from 6 to 10 hours. The fabricated CuxOy fibers treated with argon microwave plasma can prolong the antibacterial effects.
In the second part, in order to evaluate the photocatalytic activity of CuxOy fibers which were applied as the photocatalyst for degrading methyl orange and 4-nitrophenol. The results showed that CuxOy fibers treated with argon microwave plasma for 210 s showed the higher photocatalytic degradation capability against methyl orange and 4-nitrophenol. Compared with literature, it can be found that the CuxOy fibers which was prepared in this study exhibited not only high efficiency to degrade methyl orange but also simple preparation step. Moreover, the effects of concentration of hydrogen peroxide on degrading 4-nitrophenol were investigated. The results indicate that 30 mM of hydrogen peroxide showed the better degradation ability with 80.3% efficiency.
In the last part of this thesis, CuxOy fibers were applied to prepare the electrode. The electrochemical analysis, cyclic voltammetry (CV), was applied to investigate the reduction-oxidation (redox) peak and current responses of CuxOy fibers modified nickel foam electrode. The specific capacitance of CuxOy fibers was calculated by area of CV results. The CuxOy fibers was prepared by argon microwave plasma treated with 210 and 480 s, which showed higher specific capacitance of 412.9 and 418.6 F/g, respectively. Beside the high specific capacitance of CuxOy fibers, the concentration of electrolyte was lower than that was reported in literature in electrochemical analysis that is 2 M KOH. Therefore, the fabricated CuxOy fibers with argon microwave plasma treatment exhibited huge potential as material for supercapacitor.

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