靜電紡絲法製備奈米二氧化鈦-碳纖維探討表面形貌與光學性質

Surface morphology and optical properties of TiO2-Carbon nano-fiber prepared by electrospinning method

許志顥(Chih-Hao Hsu)

指導教授 ： 鍾卓良

義守大學/理工學院/材料科學與工程學系/碩士(2014年)

https://doi.org/10.6343/ISU.2014.00451

摘要

本實驗主要是探討前驅體溶液中添加葡萄糖進行靜電紡絲與紡絲後利用水熱法製備TiO2-Carbon 奈米纖維不織布。主要目的是希望藉由碳含量的增加，可以使TiO2 晶格改變，而使材料本身往長波長移動，並發現將環境控制在濕度60%以下，有利於形成不織布纖維。利用AFM、FE-SEM、XRD、UV-vis 以及HRTEM 進行試片分析。以AFM 掃描單根奈米TiO2-Carbon 纖維，探討不同製程的表面形態，發現添加葡萄糖的纖維表面，呈現多孔性，而利用水熱法的，則較平滑。使用FE-SEM 與TEM 探討其纖維表面形貌與直徑，鑑定是否為奈米等級與連續性纖維，將試片以XRD 分析探討其結晶特性，最後再以UV-Vis 與PL 光譜儀來對其光學性質之探討與研究。這樣一來可以建立靜電紡絲奈米陶瓷纖維的顯微構造、吸光和結晶性質的關聯性，希望藉營此次實驗的設計，建立相關分析技術，探討其物理、光學與結晶構造之性質變化。

關鍵字

靜電紡絲 ； TiO2-Carbon 奈米纖維

並列摘要

In this study, we prepared the precursor solution adding the glucose by electrospinning and hydrothermal after electrospinning to fabricate TiO2-Carbon nanofiber mat. The purpose is the carbon was increased, the visible absorption intensity was increased, and we found that humidity below 60% is easy to fabricate TiO2-Carbon nanofiber mat. The same specimen analysis by AFM, FE-SEM, HRTEM, UV, PL, XRD. the AFM to scan the surface of the single TiO2-Carbon nanofiber and explored the morphology of the surface. We can find hydrothermal after electrospinning nanofiber of the surface morphology is more smooth than the adding glucose by electrospinning. We used FESEM and TEM to explore the surface morphology of fibers and diameter. We also used XRD to compare the crystallization characteristics with different processes and glucose concentration. And then we used UV-Vis and PL spectrometer to explore the optical properties. Hopes that by this experimental design, we are able to create electrospinning TiO2-Carbon nano-fiber microstructure and absorption, crystalline properties, and to explore the changing nature of its physical, optical, and crystal structure.

並列關鍵字

electrospinning ； TiO2-Carbon nanofibers

參考文獻

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