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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:3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。


    目錄 第一章 前言-----------------------------------------------------------------------------------1 第二章 文獻回顧----------------------------------------------------------------------------3 2-1 硫化亞錫的性質-----------------------------------------------------------------------3 2-2 硫化亞錫奈米微粒的製備-----------------------------------------------------------3 2-3 量子點的合成--------------------------------------------------------------------------7 2-3.1 於水相中合成量子點---------------------------------------------------------8 2-3.2 量子點的表面鈍化反應----------------------------------------------------13 第三章 實驗方法--------------------------------------------------------------------------18 3-1 實驗藥品------------------------------------------------------------------------------18 3-2 實驗儀器------------------------------------------------------------------------------18 3-3 實驗方法與流程---------------------------------------------------------------------19 3-3.1 以氯化亞錫及硫化鈉為反應物於水溶液中製備硫化亞錫奈米微粒----------------------------------------------------------------------------------19 3-3.1.1 以不同方式加入氯化亞錫製備硫化亞錫奈米微粒-------------- 19 3-3.1.2 以MPA為分散劑製備硫化亞錫奈米微粒-------------------------21 3-3.1.3 利用硫化鋅鈍化保護硫化亞錫-------------------------------------- 23 3-3.1.4 晶相與表面結構分析-------------------------------------------------- 24 3-3.2 以氯化亞錫及硫化鈉為反應物於乙二醇溶液製備硫化亞錫奈米微粒------------------------------------------------------------------------------- 25 3-3.2.1 利用水熱法製備之流程----------------------------------------------- 25 3-3.2.2 以油酸作為分散劑製備之流程-------------------------------------- 26 3-3.3 以硫化鋅量子點為核進行取代生成硫化亞錫奈米微粒-------------27 3-3.3.1 硫化鋅量子點的製備-------------------------------------------------- 27 3-3.3.2 取代生成硫化亞錫奈米微粒----------------------------------------- 28 3-3.3.3 晶相與表面結構分析-------------------------------------------------- 28 第四章 結果與討論---------------------------------------------------------------------- 30 4-1以不同方式加入氯化亞錫製備硫化亞錫奈米微粒之分析------------------- 30 4-1.1 晶相分析結果----------------------------------------------------------------30 4-1.2 硫化亞錫奈米微粒產生氧化分析----------------------------------------32 4-2 以MPA為分散劑製備硫化亞錫奈米微粒之分析-----------------------------33 4-2.1 不同MPA比例以及不同酸鹼值之懸浮分散---------------------------33 4-2.2 UV-vis光譜與吸收邊緣(band edge)分析---------------------------------36 4-3 利用硫化鋅鈍化保護硫化亞錫--------------------------------------------------- 38 4-3.1 不同鋅鈍化比例的UV-vis光譜-------------------------------------------38 4-3.2 副產物ZnSn(OH)6生成分析-----------------------------------------------39 4-3.3 硫化鋅於硫化亞錫奈米微粒表面鈍化之模擬圖----------------------41 4-3.4 修正流程後的UV-vis光譜-------------------------------------------------43 4-4 於乙二醇溶液製備硫化亞錫奈米顆粒------------------------------------------ 44 4-4.1利用水熱法製備之硫化亞錫-----------------------------------------------44 4-4.1.1晶相分析結果------------------------------------------------------------ 44 4-4.1.2 表面結構分析結果----------------------------------------------------- 45 4-4.2以油酸作為分散劑製備之硫化亞錫--------------------------------------49 4-4.2.1 粒徑分析結果----------------------------------------------------------- 49 4-4.2.2 表面分析與吸收光譜分析結果-------------------------------------- 52 4-5以硫化鋅量子點為核進行取代生成硫化亞錫奈米微粒---------------------- 54 4-5.1 硫化鋅量子點的性質分析-------------------------------------------------54 4-5.2 取代生成硫化亞錫量子點的UV-vis分析-------------------------------56 4-5.3表面結構與晶格分析之結果-----------------------------------------------57 第五章 結論---------------------------------------------------------------------------------64 第六章 参考文獻--------------------------------------------------------------------------67

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