通過水熱和溶劑熱法合成銅奈米晶體之研究;Study on the Synthesis of Copper Nanocrystals via Hydrothermal and Solvothermal Reduction

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Title:	通過水熱和溶劑熱法合成銅奈米晶體之研究;Study on the Synthesis of Copper Nanocrystals via Hydrothermal and Solvothermal Reduction
Authors:	林宜萱;Lin, Yi-Xuan
Contributors:	化學工程與材料工程學系
Keywords:	奈米晶體;水熱法;溶劑熱法;Nanocrystals;Hydrothermal;Solvothermal
Date:	2022-12-29
Issue Date:	2023-05-09 17:21:12 (UTC+8)
Publisher:	國立中央大學
Abstract:	本論文為還原銅奈米晶體各種形貌之研究，利用水熱法及溶劑熱還原方法以合成各種銅奈米晶體，在調控封端劑濃度及不同反應時間等參數控制下，試圖找出最佳合成反應條件，藉由掃描式電子顯微鏡(Scanning Electron Microscope，SEM)觀察及分析其銅奈米合成之表面形貌，結果發現合成出不同形貌之產物，分別檢測出有銅奈米顆粒(copper nanoparticle)、銅奈米立方體(copper nanocube)、銅奈米四面體(copper nanotetrahedron)、銅奈米角椎體(copper nanopyramid)、銅奈米棒(copper nanorod)、銅奈米線(copper nanowire)等形貌，再經以X光能量散佈光譜(Energy-dispersive X-ray spectroscopy, EDS)分析所製備不同形貌銅奈米晶體之成分，並利用EDS的素像(mapping)功能，瞭解產物組成分布狀況，顯示出這這些銅奈米晶體皆無氧化及氯化且是純銅奈米晶體結構。同時利用image J軟體分析各項銅奈米晶體形貌之數量百分比(%)及尺寸大小之分布。在合成奈米銅之反應條件下，其一在封端劑濃度固定與不同反應時間下，可以產生不同奈米銅之量與大小;其二是合成銅奈米時間固定與不同封端劑濃度固定下，可以產生不同奈米銅形貌之量與大小。本研究成功地以水熱法及溶劑熱還原方法合成出銅奈米晶體的各種形貌，從其產生多樣銅奈米晶體形貌量數量百分比與尺寸大小，可以導引並提出銅原子在液相還原過程中晶粒成長演變的過程最佳合成反應條件，以提供未來銅奈米線基礎研究及電子產業銅奈米材料應用之基礎。 ;In this thesis is to study the various morphologies of copper nanocrystals. Hydrothermal method and solvothermal reduction method are used to synthesize various copper nanocrystals. Optimum synthesis reaction conditions, by scanning electron microscope (SEM) to observe and analyze the surface morphology of copper nano-synthesis, it was found that the synthesis of products with different shapes, copper nanoparticles were detected copper nanoparticle, copper nanocube, copper nanotetrahedron, copper pyramid, copper nanorod, copper nanowire, and then analyze the components of the prepared copper nanocrystals with different shapes by Energy-dispersive X-ray spectroscopy (EDS), and use the mapping function of EDS to understand the product. The composition distribution shows that these copper nanocrystals are free from oxidation and chlorination and are pure copper nanocrystal structures. The image J software was used to analyze the number percentage (%) and size distribution of each copper nanocrystal morphology. Under the reaction conditions for synthesizing copper nanoparticles, one can produce different amounts and sizes of copper under fixed concentration of capping agent and different reaction time; Under fixed conditions, different amounts and sizes of copper topography can be produced. In this study, various morphologies of copper nanocrystals were successfully synthesized by hydrothermal method and solvothermal reduction method. From the variety of copper nanocrystal morphology, quantity percentage and size, it can be guided and proposed that copper atoms in liquid The optimum synthetic reaction conditions for the process of grain growth and evolution during the phase reduction process will provide the basis for future basic research on copper nanowires and the application of copper nanomaterials in the electronics industry.
Appears in Collections:	[National Central University Department of Chemical & Materials Engineering] Electronic Thesis & Dissertation

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