臺灣博碩士論文加值系統

本研究探討不同方式製備還原態氧化石墨烯（Reduced Graphene Oxide , rGO），並使用溶劑熱法簡單製備BiOCl/rGO異質結構。利用穿透式電子顯微鏡（Transmission electron microscopy , TEM），掃描式電子顯微鏡（Scanning Electron Microscopy , SEM）以及X射線繞射儀（X-Ray power Diffraction , XRD）對加入GO 與rGO之光觸媒異質材料進行表面特徵探討。藉由紫外光-可見光漫反射光譜儀（UV-Vis Diffuse Reflectance Spectroscopy , UV-vis DRS）得到材料能隙為3.12 eV。所製備BiOCl/rGO 異質材料可以在可見光下對羅丹明B（Rhodamine B , RhB）有不同的光催化效果，其中以BiOCl/1.2 rGO有最好的效果。在可見光照射下（88000 lm），20分鐘可降解羅丹明B染料（20 ppm）達93.3%，相較於其他光觸媒(TiO2 , P25)有更好的降解效果。本研究所所合成之BiOCl/rGO異質材料簡易合成且可利用可見光作為降解光源並可以快速光降解有機染料，並且可以應用於真實樣品光降解有機汙染物及細菌具有良好的效果。

In this study, different ways to prepare reduced graphene oxide (rGO) doped with solvothermal synthesized BiOCl for the formation of BiOCl/rGO heterostructures were proposed. The heterostructures with different compose of graphene oxide (GO) and reduced graphene oxide (rGO) were characterized by transmission electron microscopy (TEM), scanning electron microscopy (SEM) and X-ray diffraction (XRD). The prepared heterostructures provided a band gap of 3.12 eV through UV-Vis Diffuse Reflectance Spectroscopy (UV-Vis DRS). Comparing to pure BiOCl, the prepared BiOCl/rGO exhibited higher photocatalytic activity toward Rhodamine B (93.3% degradation efficiency within 20 min-visible light irradiation). The prepared BiOCl/rGO heterostructures possessed advanced properties including easy preparation, and higher photocatalytic activity under visible light irradiation. It possesses a good performance for the photocatalytic degradation of organic pollutants and bacteria in environmental water samples in the future.

中文摘要……………………………………………………………………………Ⅰ
英文摘要……………………………………………………………………………Ⅱ
目錄……………………………………………………………………………………Ⅲ
圖目錄…………………………………………………………………………………Ⅴ
表目錄…………………………………………………………………………………Ⅶ
一、緒論
　　1-1 光觸媒……………………………………………………………1
　　1-2 羅丹明B與其他染料特性………………………3
　　1-3 光觸媒半導體改質……………………………………5
　　1-4 還原氧化石墨烯之性質………………………….9
　　1-5 研究動機與目的…………………………………………11

二、實驗藥品與儀器
　　2-1 實驗藥品…………………………………………………………13
　　2-2 實驗儀器…………………………………………………………14

三、實驗方法
　　3-1 光觸媒材料與還原氧化石墨烯製備……………………………………16
　　3-2 光降解活性實驗……………………………………………………………………………17
　　3-3 光催化不同染料及真實樣品……………………………………………………17
　　3-4 光催化滅菌活性……………………………………………………………………………18
　　3-5 光電流電極製備……………………………………………………………………………18


四、結果與討論
　　4-1 合成還原氧化石墨烯之鑑定………………………………………19
　　4-2 光觸媒之XRD………………………………………………………………………22
　　4-3 光觸媒表面特徵及結構…………………………………………………23
　　4-4 光觸媒之拉曼光譜……………………………………………………………27
　　4-5 光觸媒與還原氧化石墨烯之XPS…………………………………29
　　4-6 光觸媒之UV-DRS…………………………………………………………………33
　　4-7 光降解羅丹明B……………………………………………………………………35
　　4-8 合成BiOCl/rGO之硝酸鉍合成量探討………………………38
　　4-9 還原氧化石墨烯的添加量對降解之影響…………………41
　　4-10 觸媒與染料最佳化探討…………………………………………………43
　　4-11 光觸媒電子電洞再結合之探討……………………………………45
　　4-12 光催化機制……………………………………………………………………………49
　　4-13光觸媒之礦化效率………………………………………………………………51
　　4-14 光觸媒回收率………………………………………………………………………52

五、真實應用與未來展望
　　5-1 光觸媒降解不同有機染料…………………………………………………54
　　5-2 光觸媒在真實水樣中降解RhB…………………………………………56
　　5-3 染料敏化之應用……………………………………………………………………57
　　5-4 未來展望…………………………………………………………………………………59

六、結論………………………………………………………………………………………………………61

七、參考文獻……………………………………………………………………………………………62

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