本研究主要在探討二維材料氧化石墨烯，鑑定其組成奈米通道之結構，著重於分析氧化石墨烯奈米通道中離子電動傳輸的現象，以往文獻只有公布量測結果，並未深入探討。在理論分析上，本研究從氧化石墨烯解離的官能基群著手，計算其解離的官能基數，配合電雙層理論，即可得到其表面電荷密度的大小，也可以瞭解離子在奈米通道中的分布情形，進而推導出其電導值。接著透過實驗做出自組裝的奈米通道，隨著控制奈米通道的高度，量測不同濃度之氯化鉀水溶液、鹽酸下的電導值。透過討論實驗與理論的結果，探討在這種次奈米高度通道中的質子遷移率，並引證相關文獻，發現氧化石墨烯通道中有整齊的水分子排列與官能基團這些有組織的氫鍵結構導致更高的質子遷移率，以及在較高的表面電荷密度下，通道中電滲流對電導的貢獻會因為滑移效應的存在而被放大。透過此研究，可以更加清楚流體在奈米通道之行為，並於最後闡述未來對氧化石墨烯的研究方向，分析氧化石墨烯獨特的特性可以應用於哪些領域上。

This study mainly investigates two-dimensional material-graphene oxide, identifies the structure of graphene oxide nanochannels, and focuses on the analysis of ionized electrokinetic transport in graphene oxide nanochannels. Previous literatures only displayed the results but did not discuss the mechanism behind it. First, we begin with the discussion about the dissociated functional groups about the graphene oxide. In conjunction with the number of dissociated functional groups and the electric double layer theory, surface charge density and the distribution of ions in the nanochannel can be obtained. Therefore the conductance values can be derived, and be used for theoretical analysis. Second, the self-assembled graphene nanochannels were made experimentally. We controlled the height of the nanochannels during fabrication and measured the conductance of the nanochannels under different concentrations of potassium chloride aqueous solution and hydrochloric acid. Then, we discuss results obtained from both experiments and theories. We inferred that proton hopping benefits from the organized hydrogen-bond network due to the presence of structured water and functional groups, yielding a higher proton mobility in GO nanochannels. Slip-enhanced conductance from EO in GO nanochannel becomes significant at high surface charge density. Through this study, the behavior of fluids in the nanochannel can be more clearly understood.

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