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| DC 欄位 | 值 | 語言 |
|---|---|---|
| dc.contributor.advisor | 陳浩銘 | |
| dc.contributor.author | Ya-Chu Yu | en |
| dc.contributor.author | 游雅筑 | zh_TW |
| dc.date.accessioned | 2021-06-15T14:03:17Z | - |
| dc.date.available | 2020-08-28 | |
| dc.date.copyright | 2015-08-28 | |
| dc.date.issued | 2015 | |
| dc.date.submitted | 2015-08-20 | |
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| dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/52017 | - |
| dc.description.abstract | 氫為一乾淨的、可再生的且具高能量密度燃料，對於目前全球能源經濟的需求和實現環境友善的目標並具有取代石化燃料的潛力。在過去十年中，採用金屬/半導體之光電化學系統將太陽能轉換成氫能的光催化水分解反應是目前最具有開發價值的能源轉換反應。目前，利用鉑等貴金屬催化劑驅動太陽能將水裂解成氫氣的反應是最有效率的，然而因其成本非常高且相當稀少，而大大限制了大規模綠色能源的發展，故對於現今的科學家們仍然是具有相當大的挑戰性。 在本研究中，我們合成了具有低生產成本和高催化效率的光催化水分解複合材。透過簡單的電化學陽極氧化方法合成自組裝之二氧化鈦奈米管，並結合簡便的化學還原方法製備出具有良好的光吸收性能之金與鉑核殼結構奈米粒子，並成功應用於高效能且穩健的太陽能驅動產氫反應系統。此外，透過調控和設計金與鉑核殼結構奈米粒子，我們能更進一步優化金核金屬的奈米顆粒尺寸及鉑金屬殼的厚度，並有系統性地提升太陽能光轉化氫能的催化反應效率。此優異的催化性能源自於具有強烈光吸收性能的金核金屬本身之可調性表面電漿共振效應並結合鉑殼金屬光催化產氫性能與具有一維材料所擁有的優異電子傳遞特性之二氧化鈦奈米管所致。二氧化鈦奈米管負載金與鉑核殼結構奈米粒子亦呈現出其於長時間反應的光催化水分解產氫穩定性能，並使此金屬/半導體異質結構光催化材料對於太陽光能轉化氫能的系統表現出具有取代石化燃料的潛在能力。 | zh_TW |
| dc.description.abstract | Hydrogen, a clean, renewable, and high-energy density energy fuel, is a promising sustainable alternative for the global energy demand and achieving an environmentally friendly fuel economy. Utilizing an integrated photoelectrochemical (PEC) system based on metal/semiconductor materials to directly convert solar to hydrogen via water splitting is one of the most promising approaches in the last decade. Althougth platinum and other noble metals were efficiency for solar-driven hydrogen evolution reaction (HER), but the highly cost and scarcity greatly limit their large scale development of green energy is challenging and demanding tasks for today's scientists. In this study, we synthesized high efficient and low-cost HER photoelectrocatalysts including self-aligned TiO2 nanotubes (TiO2 NTs) via a facial electrochemical anodization method and light absorber Au@Pt core/shell nanoparticles via facile chemical reduction method, which could produce an efficient and robust PEC catalysts for solar-driven HER. Moreover, by optimizing the size of Au core particles and thickness of Pt shell, we are able to achieve an optimal Au@Pt core/shell nanoparticles structure and futher improve the overall solar conversion hydrogen efficiency. This superior performance can be attributed to the significant improvement in light harvesting properties from surface plasmon resonance effect of Au core nanostructure as well as the optimized interface between the shell Pt nanostructure catalysts and one-dimensional TiO2 NTs substrate. Outstanding HER stability was also demonstrated over long-term operation, suggesting these Au@Pt-TiO2 NTs heterostructures are promising fossil fuel alternatives for PEC catalysts of solar-driven hydrogen production. | en |
| dc.description.provenance | Made available in DSpace on 2021-06-15T14:03:17Z (GMT). No. of bitstreams: 1 ntu-104-R02223149-1.pdf: 15643389 bytes, checksum: c6dbcc80d48432129010c157afa5ebeb (MD5) Previous issue date: 2015 | en |
| dc.description.tableofcontents | 目錄 中文摘要 i 英文摘要 ii 致謝 iii 目錄 v 圖目錄 x 表目錄 xx 第一章 緒論 1 1.1奈米材料 1 1.1.1奈米材料及其維度之定義 1 1.1.2量子尺寸效應 2 1.2 奈米金屬簡介 4 1.2.1古典靜電場理論 4 1.2.2表面電漿共振效應 8 1.3 雙金屬奈米粒子 9 1.3.1雙金屬奈米粒子之應用 9 1.3.2雙金屬奈米粒子之合成 10 1.4 光催化水分解 12 1.4.1光催化水分解原理 12 1.4.2半導體材料性質 14 1.4.3 提升光催化水分解效率 16 1.5 二氧化鈦 18 1.5.1 二氧化鈦分類 18 1.5.2 零維與一維之二氧化鈦電子傳遞路徑 20 1.6 二氧化鈦奈米管合成方法 21 1.6.1 模板法 21 1.6.2 溶膠凝膠法 22 1.6.3 水熱法 23 1.6.4 陽極氧化法 25 1.7 研究動機與目的 34 第二章 實驗步驟與儀器分析原理 36 2.1化學藥品 36 2.2實驗步驟 38 2.2.1二氧化鈦奈米管之製備 38 2.2.2金/鉑核殼結構奈米粒子之製備 39 2.2.3二氧化鈦奈米管負載金/鉑核殼結構奈米粒子之製備 39 2.3儀器分析 40 2.3.1 X射線繞射分析儀 40 2.3.1.1 X射線繞射原理 41 2.3.1.2儀器規格 42 2.3.2紫外光/可見光光譜光譜儀 43 2.3.2.1紫外光/可見光光譜吸收原理 43 2.3.2.2儀器規格 44 2.3.3氣相層析儀 45 2.3.3.1氣相層析儀原理 45 2.3.3.2儀器規格 46 2.3.4電子顯微鏡 47 2.3.4.1電子顯微鏡原理 47 2.3.4.2儀器規格 48 2.3.5能量散佈光譜儀 49 2.3.5.1能量散佈光譜儀原理 49 2.3.5.2儀器規格 51 2.3.6 X光光電子能譜儀 51 2.3.6.1 X光光電子能譜儀原理 51 2.3.6.2 儀器規格 52 2.3.7同步輻射 53 2.3.7.1同步輻射吸收光譜原理 56 2.3.7.2儀器規格 72 第三章 結果與討論 74 3.1二氧化鈦奈米管 74 3.1.1陽極氧化生成二氧化鈦奈米管之參數調控 74 3.1.2穿透式電子顯微鏡分析 84 3.1.3掃描式式電子顯微鏡分析 86 3.1.4 X射線繞射分析 89 3.1.5紫外光/可見光光譜光譜儀分析 92 3.1.6氣相層析儀分析 94 3.2金/鉑核殼結構奈米粒子 95 3.2.1合成金/鉑核殼結構奈米粒子 95 3.2.2穿透式電子顯微鏡分析 97 3.2.3 X射線繞射分析 101 3.2.4紫外光/可見光光譜光譜儀分析 103 3.2.6能量散佈光譜儀分析 105 3.3二氧化鈦奈米管負載金/鉑核殼結構奈米粒子 107 3.3.1穿透式電子顯微鏡分析 107 3.3.2 X射線繞射分析 115 3.3.3 X光光電子能譜分析 116 3.3.4紫外光/可見光光譜光譜儀分析 121 3.3.5同步輻射分析 123 3.3.6氣相層析儀分析 124 第四章 結論 139 第五章 參考文獻 140 | |
| dc.language.iso | zh-TW | |
| dc.title | 二氧化鈦奈米管負載金/鉑核殼結構應用於光催化水分解製氫 | zh_TW |
| dc.title | Titania nanotubes with decorating gold/platinum core-shell nanostructure for photocatalytic hydrogen evolution | en |
| dc.type | Thesis | |
| dc.date.schoolyear | 103-2 | |
| dc.description.degree | 碩士 | |
| dc.contributor.oralexamcommittee | 廖尉斯,李介仁,林律吟 | |
| dc.subject.keyword | 二氧化鈦奈米管,金/鉑核殼結構奈米粒子,光催化,產氫, | zh_TW |
| dc.subject.keyword | Titania nanotubes,Gold/platinum core-shell nanopartilces,Photocatalytic,Hydrogen evolution, | en |
| dc.relation.page | 145 | |
| dc.rights.note | 有償授權 | |
| dc.date.accepted | 2015-08-20 | |
| dc.contributor.author-college | 理學院 | zh_TW |
| dc.contributor.author-dept | 化學研究所 | zh_TW |
| 顯示於系所單位： | 化學系 | |
文件中的檔案：
| 檔案 | 大小 | 格式 | |
|---|---|---|---|
| ntu-104-1.pdf 目前未授權公開取用 | 15.28 MB | Adobe PDF |
系統中的文件，除了特別指名其著作權條款之外，均受到著作權保護，並且保留所有的權利。