研究生: |
陳佳聖 Chen, Jia-Sheng |
---|---|
論文名稱: |
硫化亞錫奈米微粒製備方法以及特性之研究 Preparation of Tin(II) Sulfide Nanoparticles and Characterization |
指導教授: |
周更生
Chou, Kan-Sen |
口試委員: | |
學位類別: |
碩士 Master |
系所名稱: |
工學院 - 化學工程學系 Department of Chemical Engineering |
論文出版年: | 2010 |
畢業學年度: | 98 |
語文別: | 中文 |
論文頁數: | 70 |
中文關鍵詞: | 硫化亞錫 |
相關次數: | 點閱:2 下載:0 |
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本研究以氯化亞錫和硫化鈉為反應物,分別於水相使用以靜電排斥分散的3-Mercaptopropionic acid(MPA)分散劑以及於乙二醇中使用油酸(oleic acid,OA)作為分散劑,製備硫化亞錫奈米微粒並研究晶相(XRD)、粒徑分佈及表面結構(TEM、SEM以及雷射動態粒徑儀)、吸收光譜(UV-vis)等特性。
以MPA作為分散劑可以得到越鹼的鹼性環境下其硫化亞錫的分散性越好,實驗中發現以MPA:Sn:S莫耳比為4:1:1於pH 8.5下分散的硫化亞錫奈米微粒,可以得到粒徑小於10 nm的顆粒,但由於表面結構不穩定產生溶解,使得顆粒大小不均,為改善硫化亞錫溶解的情形,實驗以硫化鋅包覆的硫化亞錫奈米微粒可以有效提升吸收性質(未經處理的硫化亞錫奈米微粒從650 nm波長開始吸收,而經過包覆硫化鋅後硫化亞錫奈米微粒從800 nm波長開始吸收),但穩定性改善有限。於乙二醇下製備之硫化亞錫奈米微粒粒徑為20 - 40 nm,將製備之硫化亞錫奈米微粒,經過離心清洗後,添加MPA作為水相分散劑,可以分散於鹼性環境下的水溶液,利用乙二醇溶劑製備之優點可以避免硫化亞錫於製備中產生溶解,使粒徑分佈較為一致。
利用硫化鋅量子點為核種取代生成硫化亞錫奈米微粒,製備MPA:Zn:Sn:S莫耳比為6:1:1.5:1、6:1:1:1以及6:1:0.75:1三組所得到之顆粒粒徑皆為20 - 30 nm,此方法獲得的粒徑較為均勻,表面結構較為穩定,吸收性質同樣獲得改善。
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