Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/97968
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dc.contributor曾文甲zh_TW
dc.contributorWeajea J. Tsengen_US
dc.contributor.author蔡季剛zh_TW
dc.contributor.authorChi-Gang Tsaien_US
dc.contributor.other材料科學與工程學系所zh_TW
dc.date2018zh_TW
dc.date.accessioned2019-03-22T06:21:57Z-
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dc.identifier.urihttp://hdl.handle.net/11455/97968-
dc.description.abstract本研究以尿素玻璃法製備鈦鈮氮氧複材,藉由控制尿素與金屬前驅物比值 (Urea / Metal precursor, R)調整摻氮量,探討R值對吸收光譜、能隙值及亞甲基藍染料降解等影響,並實驗決定鈦鈮氮氧複材之最佳R值。於此,吾人以尿素玻璃法製備三組條件進行比較: (1) 鈦氮氧複材、 (2) 鈦鈮氮氧複材、 (3) 以鈣離子抑制反應速率合成之鈦鈮氮氧複材。與鈦氮氧複材相比,添加鈮預計可縮減能隙值並提升染料降解效率,另外,鈦鈮氮氧複材以氯化鈣做為鈣離子抑制劑來源時,可藉由抑制尿素之碳氮鍵分離速率以達到降低團聚發生之目的,吾人並觀察氯化鈣於尿素玻璃法中扮演何種角色。 結果顯示,鈦氮氧複材與鈦鈮氮氧複材在R=1-6比較時,添加鈮之能隙值由2.75-2.45 eV縮減至2.60-2.40 eV,吸收邊界則由430-480 nm延伸至470-510 nm。吾人將鈦鈮氮氧複材之R值由1-6細分為9組,於R=3-3.5時,吸收邊界延伸至520 nm及能隙值縮減至2.40 eV,相比R=1時,其可見光光催化亞甲基藍染料降解效率由1%提升至17-19%,故R=3-3.5為具最佳光學性質之R值。至於鈣離子添加雖如預期具抑制尿素碳氮鍵分離效果,幫助降低團聚效應,但由於均勻的氨基氛圍使鈦鈮氮氧複材於R=4時僅以氮化鈦結構形成,另外,氯化鈣會以前驅物型式參與反應進而形成具鈣鈦礦結構之副產物。zh_TW
dc.description.abstractIn this study, Ti-Nb nitride-oxide composites were prepared by urea glass method. By controlling the ratio of urea to metal precursor (R), Ti-Nb nitride-oxide composites of different nitrogen doping levels were obtained. Absorption, band gap and organic dye photodegradation were examined in order to find the most suitable R for the Ti-Nb nitride-oxide composites. Three types of composites were prepared for comparison: (1) Ti nitride-oxide composites, (2) Ti-Nb nitride-oxide composites, and (3) Ti-Nb nitride-oxide composites with Ca-assisted preparation. The purpose was to examine whether incorporation of Nb in Ti nitride-oxide composites can obtain better optical properties and organic dye photodegradation efficiency when comparing to the Ti nitride-oxide composites. In addition, we would like to make sure whether Ca-assisted route can inhibit C-N bond release of urea and homogenize the particle-size distribution. Our results showed that, comparing with Ti nitride-oxide composites, Ti-Nb nitride-oxide composites of different R ratios (R=1-6) reduced the band gap from 2.75-2.45 eV to 2.60-2.40 eV and had extended the absorption edge from 430-480 nm to 470-510 nm. Furthermore, it was found that Ti-Nb nitride-oxide composites of R=3-3.5 had extended the absorption edge to nearly 520 nm, and the band gap reduced to 2.40 eV. Photodegradation efficiency against methylene-blue dye increased from 1% for composites with R=1 to 17-19% for composites with R=3-3.5, that R=3-3.5 had the best optical performance. Although Ca-assisted which indicate route can homogenize particle-size, the gradually released C-N bond would let metal precursors surrounded by -NH2. This result in formation of TiN at R=4. In addition, CaCl2 facilitated formation of CaTiO3.en_US
dc.description.tableofcontents摘要 i Abstract ii 目錄 iii 圖目錄 v 表目錄 vii 第一章 緒論 1 一、 前言 1 二、 研究動機 1 第二章 文獻回顧 2 一、 二氧化鈦特性及其光催化機制 2 (一)、 二氧化鈦之晶體結構 2 (二)、 二氧化鈦之光催化機制 3 二、 二氧化鈦複合材料之文獻整理 5 (一)、 過渡金屬摻雜 5 (二)、 非金屬摻雜 6 三、 尿素玻璃法 8 四、 二氧化鈦對於亞甲基藍染料之光降解 12 五、 氮化鈦於光催化之角色 14 六、 光催化動力學-Langmuir-Hinshelwood動力學模型 16 第三章 實驗儀器與分析儀器介紹 18 一、 實驗藥品 18 二、 製程設備 19 三、 分析儀器 20 第四章 實驗流程 21 一、 尿素玻璃法製備樣品 21 二、 鈦氮氧複材製備方法 22 三、 鈦鈮氮氧複材製備方法 23 四、 以鈣離子抑制反應之鈦鈮氮氧複材製備方法 24 五、 吸收光譜測定實驗 25 六、 亞甲基藍檢量線製作 26 七、 亞甲基藍染料降解 27 第五章 結果 28 一、 XRD分析 28 二、 吸收光譜與能隙測定 31 三、 有機染料亞甲基藍之檢量線 33 四、 氙燈光源波長-可見光 33 五、 亞甲基藍可見光降解 34 六、 SEM分析 37 七、 TEM分析 41 八、 BET分析 42 第六章 討論 44 一、 TN之R值改變對於可見光光催化亞甲基藍染料降解之影響 44 二、 TN樣品之XRD晶粒尺寸與特徵峰比較 49 三、 TN之樣品於可見光光催化亞甲基藍染料降解之動力學分析 51 四、 Nb與N摻雜方式之影響 53 五、 複合材料中氮化鈦其性質與影響 54 第七章 結論 56 第八章 參考文獻 57zh_TW
dc.language.isozh_TWzh_TW
dc.rights同意授權瀏覽/列印電子全文服務,2019-08-23起公開。zh_TW
dc.subject尿素玻璃法zh_TW
dc.subject氮摻雜zh_TW
dc.subject可見光催化zh_TW
dc.subject鈦鈮氮氧複材zh_TW
dc.subjecturea-glassen_US
dc.subjectdye photodegradationen_US
dc.subjectTi-Nb Nitride-Oxide Compositesen_US
dc.title以尿素玻璃法製備鈦鈮氮氧複材於可見光光催化染料降解之研究zh_TW
dc.titleUrea-Glass Preparation of Ti-Nb Nitride-Oxide Composites for Visible-Light Dye Photodegradationen_US
dc.typethesis and dissertationen_US
dc.date.paperformatopenaccess2019-08-23zh_TW
dc.date.openaccess2019-08-23-
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item.openairetypethesis and dissertation-
item.cerifentitytypePublications-
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item.languageiso639-1zh_TW-
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