張哲政Chang, Che-Chen臺灣大學:化學研究所羅康榮Lo, Kang-JungKang-JungLo2010-06-302018-07-102010-06-302018-07-102009U0001-2306200914381900http://ntur.lib.ntu.edu.tw//handle/246246/187500本研究目的在於以有機相溶液合成法製備多晶氧化亞銅的奈米結構。首先，以溶解於乙二醇中的氯化銅(I)作為前驅物，後與聚乙烯吡咯烷酮(PVP)混合，接著升溫至攝氏150度並維持一段特定時間。以此法得到之奈米線利用穿透式電子顯微鏡(TEM)、掃描式電子顯微鏡(SEM)、原子力顯微鏡(AFM)及電子能譜儀(XPS)等儀器確定其化學組成及外觀特性。選區電子繞射(SAED)的結果說明這些奈米線是多晶的氧化亞銅。將反應時間拉長，奈米線表面漸趨平滑。實驗中，可改變之參數包含溫度、不同陰離子的前驅物、PVP的選用和結構導引效應。本論文探討這些影響多晶奈米線形成結果的因素，最後歸納出這套解釋一元奈米結構單方向性成長的可信機制。A simple method was developed to prepare polycrystalline cuprous oxide nanostructures in organic solutions. In this study, CuCl dissolved in ethylene glycol was used as the precursor, which then mixed with polyvinylpyrrolidone (PVP) before raising temperature to 150 oC and maintaining for a designated period of time. Nanowires were formed initially and characterized by transmission electron microscopy (TEM), scanning electron microscopy (SEM), atomic force microscopy (AFM) and x-ray photoelectron spectrometry (XPS). These nanowires were polycrystalline Cu2O, as determined by selective-area electron diffraction (SAED). With a longer reaction time, the surface of nanowires became smoother. Factors including the temperature, the counter-ion of the precursor, the existence of PVP and the structure directing effect of the solvent that may affect the formation of polycrystalline nanowires are discussed. At last, a plausible mechanism was proposed to explain the anisotropic growth of the 1D nanostructure.Chapter I. Introduction 8.1 The world of nano 8.2 Properties of nano-materials 9.3 Applications of oxide based nano-materials 11.4 One dimentional (1D) nano-materials 12.5 Characteristics and applications of metal oxide 1D nano-materials 12.6 Properties and applications of copper oxide 1D nano-structures 15.7 Definitions and forces of self-assembly 15.8 Synthesis methods of 1D nano-materials 17.9 Synthesis methods of cuprous oxide 1D nano-structures 18.10 Cuprous oxide nano-structures based on organic solution synthesis and the effect of different Cu precursors 19hapter II. Experimental Section 21.1 Chemical reactions and measurements 21.1.1 Chemical reactions 23.1.2 Characteristics 24.2 Instruments and techniques 24.2.1 SEM 25.2.2 EDXS 26.2.3 TEM 27.2.4 EELS 28.2.5 XPS 29.2.6 GPC 29.2.7 AFM 30hapter III. Results and Discussions 31.1 Characteristics of as-prepared nanowire 31.2 Nanowire growth affect by multiple factors 35.2.1 Temperature 35.2.2 Precursor 43.2.3 Surfactant 47.2.3.1 CTAB/SDS 48.2.3.2 PVP/ nothing added 51.2.4 Solvent 54.3 Growth mechanism 56.4 Further experiment 65hapter IV. Conclusions 69eference 699377091 bytesapplication/pdfen-US奈米線銅多晶乙二醇成長機制nanowirecopperpolycrystallineethylene glycolgrowth mechanismthesishttp://ntur.lib.ntu.edu.tw/bitstream/246246/187500/1/ntu-98-R96223113-1.pdf