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完整後設資料紀錄
DC 欄位 | 值 | 語言 |
---|---|---|
dc.contributor.advisor | 王勝仕 | zh_TW |
dc.contributor.advisor | Sheng-Shih Wang | en |
dc.contributor.author | 黃杞楓 | zh_TW |
dc.contributor.author | Chi-Fong Huang | en |
dc.date.accessioned | 2023-03-19T22:09:08Z | - |
dc.date.available | 2023-12-26 | - |
dc.date.copyright | 2022-07-06 | - |
dc.date.issued | 2022 | - |
dc.date.submitted | 2002-01-01 | - |
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Zulmajdi, S., et al., Sol-gel Preparation of Different Crystalline Phases of TiO2 Nanoparticles for Photocatalytic Degradation of Methylene Blue in Aqueous Solution. American Journal of Nanomaterials, 2019. 7(1): p. 39-45. | - |
dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/84349 | - |
dc.description.abstract | 二氧化鈦具化學穩定性及良好的光催化活性,常用於光催化反應中,當粒子降為奈米尺寸時,具有較高的表面能量及原子比例,使奈米粒子的催化活性提升,但高的表面能量同時造成奈米粒子易產生聚集現象,為了提升奈米粒子的分散性及回收率,將二氧化鈦奈米粒子固定於乳清分離蛋白類澱粉纖維上,以製備具有催化能力的奈米粒子-類澱樣蛋白原纖維複合材料。將乳清分離蛋白溶於去離子水中,以鹽酸調整pH至2,於80 ℃及60 rpm攪拌下,培養24小時形成乳清分離蛋白類澱粉纖維(WPI-AF),將乳清分離蛋白類澱粉纖維與硫酸氧鈦混合,以尿素為沉澱劑,經由水熱法於110 ℃合成TiO2NP/WPI-AF複合材料。TEM結果顯示當使用WPI-AF載體時,TiO2NP粒子間的聚集明顯減少。在35 ℃下,以0.0075 mM的亞甲基藍為反應物,進行光催化降解亞甲基藍反應。以5 mM TiO2NP/WPI-AF或TiO2NP作為催化劑時,光降解2.5小時,亞甲基藍的降解率分別約為82 %和45 %,經過固定化程序的 TiO2NP催化活性大幅提升,光照3.5小時的條件下,TiO2NP/WPI-AF重複進行光催化反應10次,亞甲基藍光降解率仍達90 %,說明TiO2NP/WPI-AF複合材料具良好的光穩定性。 | zh_TW |
dc.description.abstract | Titanium dioxide exhibits chemical stability and photocatalytic activity, and is often used in photocatalytic reactions. When the particles are reduced to nanometer size, they have high surface energy, which improves the catalytic activity of nanoparticles. However high surface energy of nanoparticles also leads to aggregation. In order to improve the dispersibility and recovery of titanium dioxide nanoparticles, we deposited titanium dioxide nanoparticles (TiO2NP) on whey protein isolate amyloid fibrils (WPI-AF) to produce the nanoparticle-amyloid fibril hybrid materials with catalytic capability.Whey protein isolate amyloid fibrils (WPI-AF) were first prepared at pH 2 and 80°C with 60 rpm stirring for 24 hr. Next, WPI-AF were mixed with titanium oxysulfate, and urea was used as a precipitant to synthesize TiO2NP/WPI-AF composites by the hydrothermal method. In addition, TiO2NP was produced by mixing titanium oxysulfate, and urea at the temperature of 110 °C. TEM results revealed that aggregation of TiO2NP was greatly reduced when WPI-AF support was used. The photocatalytic degradation of methylene blue was carried out at 35 °C with methylene blue at 0.0075 mM as the reactant. When 5 mM TiO2NP/WPI-AF or TiO2NP was used as the catalyst, the percentage photodegradation of methylene blue irrdiated by UV-C light for 2.5 hr was ~82 % or ~45 %, respectively, indicating that the catalytic activity of TiO2NP after immobilization was significantly improved. Irradiated by UV-C light for 3.5 hr, the percentage degradation of methylene blue photocatalyzed by the 10-time reused TiO2NP/WPI-AF still reached ~90%, indicating the nice photostability of synthesized TiO2NP/WPI-AF composite materials. The outcome of this study provide a nice example of applying amyloid fibrillary aggregates in catalysis. | en |
dc.description.provenance | Made available in DSpace on 2023-03-19T22:09:08Z (GMT). No. of bitstreams: 1 U0001-2405202208594200.pdf: 6699457 bytes, checksum: c602b8dbf00dbcab0b70d5d118f29ef2 (MD5) Previous issue date: 2022 | en |
dc.description.tableofcontents | 誌謝 I 摘要 II ABSTRACT III 目錄 IV 圖目錄 VII 表目錄 X 第一章 文獻回顧 1 1.1 奈米材料簡介 1 1.2 金屬氧化奈米粒子 2 1.2.1 二氧化鈦簡介 2 1.2.2 二氧化鈦奈米粒子合成 3 1.2.3 金屬氧化奈米複合材料 13 1.3 類澱粉纖維 20 1.3.1 乳清分離蛋白 21 1.3.2 乳清分離蛋白類澱粉纖維 22 1.3.3 類澱粉纖維鑑定 22 1.3.4 類澱粉纖維用於觸媒載體之潛力 23 1.4 亞甲基藍簡介 24 1.5 光催化 25 1.5.1 光催化簡介 25 1.5.2 光觸媒 25 1.6 實驗檢測原理介紹 31 1.6.1 二氧化鈦定量 31 1.6.2 Thioflavin T螢光光譜 31 1.6.3 光催化動力學機制 32 第二章 研究動機 34 第三章 實驗儀器、藥品與步驟 35 3.1實驗儀器 35 3.2實驗藥品 36 3.3實驗方法及步驟 37 3.3.1溶液配製 37 3.3.1-1 PB BUFFER配製 37 3.3.1-2 THT螢光染劑配製 37 3.3.1-3 亞甲基藍溶液配製 37 3.3.2檢量線繪製 38 3.3.2-1硫酸氧鈦檢量線繪製 38 3.3.2-2亞甲基藍檢量線繪製 38 3.3.3 乳清分離蛋白類澱粉纖維培養 39 3.3.4 二氧化鈦奈米粒子製備 39 3.3.5 二氧化鈦奈米粒子/乳清分離蛋白類澱粉纖維(WPI-AF)製備 41 3.3.6 ThT螢光光譜量測 42 3.3.7 TEM樣品製備 44 3.3.8光催化降解亞甲基藍(Methylene blue) 44 3.3.9 亞甲基藍光催化反應-亞甲基藍隨時間的變化 46 第四章 實驗結果與討論 49 4.1 乳清分離蛋白類澱粉纖維 49 4.2 二氧化鈦奈米粒子製備 51 4.2.1 二氧化鈦奈米粒子 51 4.2.2 二氧化鈦奈米粒子/乳清分離類澱粉纖維 53 4.3 亞甲基藍光催化反應 54 4.3.1 催化劑有無固定化對於光催化之影響 54 4.3.2 光催化降解亞甲基藍動力學機制探討 58 4.3.3 二氧化鈦奈米粒子濃度變化對於光催化之影響 63 4.3.4 亞甲基藍濃度變化對於光催化之影響 66 4.3.5 溫度對於光催化反應影響 68 4.3.6 催化劑光穩定性測試 73 4.3.7 催化劑穩定性測試 74 5.1 文獻探討 75 5.1.1 類澱粉纖維載體應用 75 5.1.2 觸媒固定化應用於光催化程序 76 5.1.3 光催化降解亞甲基藍程序動力學機制探討 77 5.1.4 氧化奈米粒子光降解亞甲基藍反應活化能探討 77 第五章 結論 79 第六章 未來展望 80 參考文獻 81 附錄 89 | - |
dc.language.iso | zh_TW | - |
dc.title | 二氧化鈦修飾乳清分離蛋白澱粉樣纖維於亞甲基藍光催化降解之應用 | zh_TW |
dc.title | Application of Titanium Dioxide Nanoparticle-decorated Whey Protein Isolate Amyloid Fibril in the Photocatalytic Degradation of Methylene Blue | en |
dc.type | Thesis | - |
dc.date.schoolyear | 110-2 | - |
dc.description.degree | 碩士 | - |
dc.contributor.oralexamcommittee | 林達顯;吳宛儒;侯素君;賴進此 | zh_TW |
dc.contributor.oralexamcommittee | Ta-Hsien Lin;Wan-Ru Wu;Su-Chun How;Jin-Chi Lai | en |
dc.subject.keyword | 乳清分離蛋白,類澱粉纖維,二氧化鈦奈米粒子,光催化降解亞甲基藍反應, | zh_TW |
dc.subject.keyword | whey protein isolate,amyloid fibril,titanium dioxide nanoparticle,photodegradation of methylene blue, | en |
dc.relation.page | 93 | - |
dc.identifier.doi | 10.6342/NTU202200799 | - |
dc.rights.note | 同意授權(限校園內公開) | - |
dc.date.accepted | 2022-05-25 | - |
dc.contributor.author-college | 工學院 | - |
dc.contributor.author-dept | 化學工程學系 | - |
dc.date.embargo-lift | 2027-05-24 | - |
顯示於系所單位: | 化學工程學系 |
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