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| DC 欄位 | 值 | 語言 |
|---|---|---|
| dc.contributor.advisor | 謝宗霖 | |
| dc.contributor.author | Sze-Min Hsieh | en |
| dc.contributor.author | 謝思敏 | zh_TW |
| dc.date.accessioned | 2021-06-15T04:45:40Z | - |
| dc.date.available | 2012-08-09 | |
| dc.date.copyright | 2010-08-09 | |
| dc.date.issued | 2010 | |
| dc.date.submitted | 2010-08-06 | |
| dc.identifier.citation | 1. M. Kitano, M. Matsuoka, M. Ueshima and M. Anpo, 'Recent developments in titanium oxide-based photocatalysts.' Applied Catalysis A: General, 325(2007)1-14.
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| dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/45758 | - |
| dc.description.abstract | 管狀結構相較於粉末結構有更大的比表面積，陽極處理置備二氧化鈦奈米管具有低價格、高效率、排列有序和製程簡單等優點，本實驗於鈦金屬箔片置備二氧化鈦奈米管以用來進行光催化反應，為了於二氧化鈦奈米管中產生氧缺陷以降低其能隙值使其在可見光下反應，因此將二氧化鈦米管於還原氣氛(99%N2+1%H2)中，溫度400℃到750℃進行退火。吸收光譜顯示二氧化鈦奈米管於空氣和還原氣氛退火之臨界吸收波長皆有藍移(blue shift)之現象，且溫度從600℃到750℃，其吸收曲線於可見光區皆有上揚之趨勢，其原因為氧缺陷存在於二氧化鈦奈米管中，且溫度對於二氧化鈦奈米管吸收曲線的影響大於氣氛，溫度為600℃時，產生氧缺陷的主要原因為相轉變導致結構上的mismatch，溫度為700℃和750℃時，由於氧的擴散速率變快，因此會往底層的鈦擴散並與其行氧化反應。二氧化鈦奈米管其光電流密度和IPCE於可見光照射下亦有表現，且XPS分析顯示有氧缺陷的存在，這些都證明了二氧化鈦奈米管中氧缺陷的存在。從I-V curve 結果顯示，二氧化鈦奈米管於空氣和還原氣氛退火溫度600℃持溫4hr，於電壓1V時光電流密度最大，且其光轉氫效率為1.8~2.1%。
(Ag0.75Sr0.25)(Nb0.75Ti0.25)O3光觸媒分別以Ag2O、Nb2O5、SrCO3和 TiO2四種原始粉末以及Ag2O、Nb2O5和SrTiO3三種原始粉末去混，其XRD皆以AgNbO3為主要結構，從吸收光譜曲線可知，於三種混和四種混之(Ag0.75Sr0.25)(Nb0.75Ti0.25)O3，加入分散劑之結果皆造成其微結構為porous的表現，其吸收曲線對光的吸收值有明顯之提升。 | zh_TW |
| dc.description.abstract | Large surface area nanotubes have been considered to be an effective structure for sufficient active point promotion for photocatalyst. In this research, anodization of Ti foils was utilized for ordered arrays of TiO2 nanotubes photocatalyst fabrication. High temperature annealing (600°C to 750°C) under reduction (99%N2/1%H2) and ambient atmosphere was applied for oxygen vacancies generation for which the photocatalytic reaction to occured. Progressing blue-shift was appeared in UV-Vis spectra which revealed the band gap evolution under different annealing temperature, moreover, gradually rise in optical density at visible region (from 400 nm to 800 nm) was observed in the cases of 600℃ to 750℃ annealed samples. X-ray diffraction (XRD) analysis results demonstrated phase transition of TiO2 nanotubes from anatase to rutile with respected to different annealing temperature, decreasing in intensity of diffraction peaks about Ti foil was also observed. Oxygen concentration was found to increase with depth by XPS depth profile observation. To the above regards, oxygen vacancies were proposed to be generated during annealing treatment by phase transition caused lattice mismatch and oxygen atoms diffusion, especially in high temperature annealed cases.
To the aspect of photocatalystic activity, greatest current density with respect to given potential was found to be 1 V for TiO2 nanotubes annealed under both reduction and ambient atmospheres for 4 hrs at 600℃, and the photon-to-hydrogen generation efficiency monitored at this potential was in the range of 1.8~2.1%. To extend the working wavelength of photocatlayst to visible region, (Ag0.75Sr0.25)(Nb0.75Ti0.25)O3 photocatalyst was fabricated by Ag2O, Nb2O5, SrCO3 and TiO2 mixed powders. Surfactant (Darvan C) was conditionally used to facilitate the powder mixture before sintered. For comparison, photocatalyst composed by Ag2O, Nb2O5 and SrTiO3 was also preformed. According to XRD testing results, AgNbO3 was found to be the dominant phase in both cases. UV/Vis spectra demonstrated (Ag0.75Sr0.25)(Nb0.75Ti0.25)O3 photocatalyst fabricated by three and four powders mixture with surfactant got higher optical intensity in absorption for which would further enhance photocatalytic performance in visible region. | en |
| dc.description.provenance | Made available in DSpace on 2021-06-15T04:45:40Z (GMT). No. of bitstreams: 1 ntu-99-R97527035-1.pdf: 26243815 bytes, checksum: df4b338eb1d0bee08914d8fcb32baf16 (MD5) Previous issue date: 2010 | en |
| dc.description.tableofcontents | 總目錄
總目錄………………………………………………………………...……I 圖目錄…………………………………………………………………….IV 表目錄………………………………………………...…………………..XI 第一章 緒論……………………………………………………………..1 1.1 前言……………………………………………………….…………..1 1.2 研究動機與目的………………………………………….…………....2 第二章文獻回顧……………………………………...………..…………..4 2.1 奈米材料之特性…………………………………………………........4 2.2 二氧化鈦薄膜製備方式...................................................................….5 2.3 二氧化鈦光觸媒之發展……………………………………....………7 2.4 二氧化鈦基本性質…………………………………………....……..10 2.5 陽極處理製備二氧化鈦奈米管……………………..………..……..12 2.5.1 第一代二氧化鈦奈米管-含HF之電解液…...…………...………..13 2.5.2 第二代二氧化鈦奈米管-含KF或NaF之中性電解液....………....15 2.5.3 二氧化鈦奈米管形成機制………………….……………………..19 2.6 光電解法…………………………...……………...…….….....……..21 2.6.1 光電解法之簡述…...……………………...…………...…………..21 2.6.2 光電化學電池…..……………………………………….……..…..22 2.6.3 光電化學分解水………………………...…..……………………..23 2.6.4 光電化學裝置之種類………………..……….………………..…..25 2.7 半導體和電解液之界面性質………………..….………….………..26 2.7.1 半導體和電解液界面之能帶彎曲…..……...……………………..26 2.7.2 光電化學電池能帶模型…..…………...……………..………..…..28 2.7.3 光電化學電池分解水之效率………………………….…………..32 2.8 濕式分散設備簡介………………..………..….…...………………..33 第三章 實驗步驟與儀器分析…………………….....……..……..……..35 3.1 實驗藥品……………..…………………...…………………...……..35 3.2 實驗流程………………………..……………...………….......……..36 3.2.1 二氧化鈦奈米管之製備………….………..……………….……....36 3.2.2 (Ag0.75Sr0.25)(Nb0.75Ti0.25)O3 之製備…………..…………….……....37 3.3 儀器分析方法……………………...……………………......…...…..41 3.3.1 場發射掃描式電子顯微鏡分析(SEM)與能量散佈分析儀分析 (EDS)……………………………………………..……………….……....41 3.3.2 X-ray 繞射分析(XRD)…………………………………….………..41 3.3.3 紫外光/可見光/近紅外光光譜量測…………..…………………...41 3.3.4 電化學量測…………………………………………………...…....42 3.3.5 X 光電子能譜儀量測(XPS)與縱深分析(Depth Profile)…………..42 3.3.6 入射光轉電流效率量測(IPCE)…………………………..……......43 3.3.7 熱分析……………………………………………………...……....43 3.3.8 介達電位(Zeta Potential)量測……………………………………..44 3.3.9 穿透式電子顯微鏡(TEM)………………………………..………..44 3.3.10 電子探測光顯微分析(EPMA)…………………………...……....44 第四章 結論…………………………………………………….…..……47 4.1 TiO2 奈米管光觸媒於空氣與還原氣氛退火之特性分析........……..47 4.1.1 SEM 分析………………………………….…..…………………....47 4.1.2 XRD 分析…………………………...........…..……………………..57 4.1.3 紫外光/可見光/近紅外光光譜分析…………..……...…………....62 4.1.4 電化學分析………………………………..……………...………..70 4.1.5 XPS 分析…………………………………………………..………..77 4.1.6 縱深分析……………………………………………...…………....79 4.1.7 IPCE 分析…………………………...........…..……………………..80 4.1.8 光轉氫效率分析……........………...........…..……………………..84 4.2 TiO2 奈米管光觸媒於空氣與還原氣氛退火之特性分析…….….....86 4.2.1 熱分析………………………………………...…………………....86 4.2.2 Zeta 電位分析………………………………..……………………..87 4.2.3 懸浮分散分析………………………………………...…………....89 4.2.4 TEM 分析……………………...................…..……………………..92 4.2.5 XRD 分析…………………………………………………..…...…..98 4.2.6 SEM 與EDS分析…………………….………..…………..……....102 4.2.7 EPMA分析…………………………………..…………………….110 4.2.8 紫外光/可見光/近紅外光光譜分析…………………….………..111 第五章 結論……………………………………...………………..……115 5.1 二氧化鈦奈米管光觸媒……………..………………………...…….115 5.2 (Ag0.75Sr0.25)(Nb0.75Ti0.25)O3 光觸媒……………..………...……..…117 參考文獻………………………………………..…………...……..……119 圖目錄 圖 2.1.1 表面原子數與粒徑的關係………………………………………5 圖 2.3.1 (A)光電化學電池(PEC) ；(B)short-circuited 之概要圖..…….…7 圖2.3.2 (A)二氧化鈦(B)摻雜金屬離子於二氧化鈦(C)金屬離子植入二 氧化鈦之能帶結構圖…………...............................................................…9 圖 2.3.3 於鈦金屬基材上製備二氧化鈦薄膜光催化系統，二氧化鈦薄 膜於光照射面為一氧化作用(TiO2)，背面為一還原作用(Pt)，其於光照 射下分解水產生氫氣和氧氣……………………………...…………..…10 圖 2.4.1 銳鈦礦和金紅石之晶體結構圖………………………...……..11 圖 2.4.2 銳鈦礦和金紅石結構之能隙圖2.5.1 利用三極式電化學電池 製備二氧化鈦奈米管之概要圖……………………………………...…..12 圖 2.5.1 利用三極式電化學電池製備二氧化鈦奈米管之概要圖….…14 圖 2.5.2 二氧化鈦奈米管於定電壓10V 下，溫度分別為(a)5℃(b)50℃ 之微結構圖…………………………………………………………….…15 圖 2.5.3 二氧化鈦奈米管於不同pH 值電解液(pH>1)中之側視圖。試片 10 到試片12 於pH 值為2.8 時，其孔徑大小的變化情形如插入圖所 示………………………………………………………………………….18 圖 2.5.4 二氧化鈦奈米管於定電壓下形成機制之概要圖(a)氧化層形成 (b)小凹形成 (c)小凹穴的成長變成像扇形的孔洞 (d)孔洞間金屬部分 經歷氧化作用和電場幫助溶解(e)形成完整的二氧化鈦奈管.…………21 圖 2.6.1 三極式光電化學電池之概要圖……………………………….22 圖 2.6.2 光電化學分解水產生氫氣和氧氣之示意圖………...………..24 圖 2.6.3 光電解水產氫之實驗裝配說明圖………………………….…24 圖 2.6.4 二氧化鈦奈米管於定電壓10V 不同溫度之陽極處理條件，其 光電流密隨量測電位變化的曲線圖。光源波長為320~400nm，強度 100mW/cm2………………………………..…………………….………25 圖 2.7.1 半導體和電解液界面之能帶彎曲圖………………….………28 圖 2.7.2 半導體-金屬光電解電池之能帶圖……………………………29 圖 2.7.3 半導體-金屬於照光且無施加電壓下之光電解電池之能帶…30 圖 2.7.4 p-n 光電解電池之能帶圖………………………………………31 圖 2.7.5 p-n 光化學二極體光電解水之能帶圖…………………………32 圖 2.7.6 二氧化鈦奈米管作為光電極之IPCE 光譜圖……………...…33 圖 3.2.1 陽極處理製備二氧化鈦奈米管之示意圖………………….…39 圖 3.2.2 二氧化鈦奈米管實驗流程圖……………………………...…..39 圖 3.2.3 (Ag0.75Sr0.25)(Nb0.75Ti0.25)O3 實驗流程圖………………….....…40 圖 3.3.1 電化學分析示意圖……………………………….………....…45 圖 3.3.2 紫外光強度分佈圖……………………………………….....…45 圖 3.3.3 IPCE 光源強度分佈圖……………………………….……....…46 圖 4 . 1 . 1 二氧化鈦奈米管於空氣氣氛退火， 溫度 (a)400℃(b)500℃(c)600℃(d)700 ℃ (e)750℃持溫2hr 之上視圖………49 圖 4 . 1 . 2 二氧化鈦奈米管於空氣氣氛退火， 溫度 (a)400℃(b)500℃(c)600℃(d)700 ℃ (e)750℃持溫2hr 之側視圖…....…50 圖 4.1.3 二氧化鈦奈米管於99%N2+1%H2 氣氛退火，溫度(a)400℃ (b)500℃ (c)600℃ (d)700 ℃ (e)750℃持溫2 hr 之上視圖……...........…51 圖 4.1.4 二氧化鈦奈米管於99%N2+1%H2 氣氛退火，溫度(a)400 (b)500℃ (c)600℃ (d)700 ℃ (e)750℃持溫2hr 之側視圖………………52 圖 4.1.5 二氧化鈦奈米管於空氣氣氛退火，溫度(a)400℃ (b)500℃ (c)600℃ (d)700 ℃ (e)750℃持溫4hr 之上視圖…………………………53 圖4.1.6 二氧化鈦奈米管於空氣氣氛退火，溫度(a)400℃ (b)500℃ (c)600℃ (d)700 ℃ (e)750℃持溫4hr 之側視圖……………………....…54 圖 4.1.7 二氧化鈦奈米管於99%N2+1%H2 氣氛退火，溫度(a)400℃ (b)500℃ (c)600℃ (d)700 ℃ (e)750℃持溫4hr 之上視圖……….…...…55 圖 4.1.8 二氧化鈦奈米管於99%N2+1%H2 氣氛退火，溫度(a)400℃ (b)500℃ (c)600℃ (d)700 ℃ (e)750℃持溫4 hr 之側視圖...…….…...…56 圖 4.1.9 TiO2 奈米管於(a)空氣和(b)99%N2+1%H2 氣氛退火，溫度從 400℃到750℃持溫2hr 之XRD圖…………………………………….…59 圖 4.1.10 TiO2 奈米管於(a)空氣和(b)99%N2+1%H2 氣氛退火，溫度從 400℃到750℃持溫4hr 之XRD圖………………………………….....…60 圖 4.1.11 二氧化鈦奈米管於空氣氣氛退火，溫度從400℃到750℃持 溫2hr 之吸收光譜圖………………………………………………….......65 圖 4.1.12 二氧化鈦奈米管於空氣氣氛退火，溫度從400℃到750℃持 溫2hr 之能隙圖…………………………………………………….......…65 圖 4.1.13 二氧化鈦奈米管於99%N2+1%H2 氣氛退火，溫度從400℃到 750℃持溫2hr 之吸收光譜圖……………………………………….....…66 圖 4.1.14 二氧化鈦奈米管於99%N2+1%H2 氣氛退火，溫度從400℃到 750℃持溫2hr 之能隙圖……………….................................................…66 圖 4.1.15 二氧化鈦奈米管於空氣氣氛退火，溫度從400℃到750℃持 溫4hr 之吸收光譜圖…...……...………………………………………….67 圖 4.1.16 二氧化鈦奈米管於空氣氣氛退火，溫度從400℃到750℃持溫 4hr 之能隙圖…………...........................................................................…67 圖 4.1.17 二氧化鈦奈米管於99%N2+1%H2 氣氛退火，溫度從400℃到 750℃持溫4hr 之吸收光譜圖……………………………………….....…68 圖 4.1.18 二氧化鈦奈米管於99%N2+1%H2 氣氛退火，溫度從400℃到 750℃持溫4hr 之吸收光譜圖…………………….................................…68 圖 4.1.19 於二氧化鈦摻雜不同比例氮之吸收光譜圖……………...…69 圖 4 . 1 . 2 0 二氧化鈦中不同氧缺陷含量 (Ⅰ)0%(Ⅱ)12.5%(Ⅲ)6.2%(Ⅳ)3.1%之吸收光譜圖…………………..…69 圖 4.1.21 二氧化鈦奈米管於空氣氣氛退火，溫度從400℃到750℃持 溫2hr 於紫外光光源照射之光電流密度圖…………………………...…73 圖 4.1.22 二氧化鈦奈米管於99%N2+1%H2 氣氛退火，溫度從400℃到 7 5 0 ℃ 持溫2 h r 於紫外光光源照射之光電流密度 圖…………………………………………………………………….........73 圖 4.1.23 二氧化鈦奈米管於空氣氣氛退火，溫度從400℃到750℃持 溫4hr 於紫外光光源照射之光電流密度圖...............................................74 圖 4.1.24 二氧化鈦奈米管於99%N2+1%H2 氣氛退火，溫度從400℃到 750℃持溫4hr 於紫外光光源照射之光電流密度圖….…………………74 圖 4.1.25 二氧化鈦奈米管於空氣氣氛退火，溫度從400℃到750℃持溫 2hr 於可見光光源照射之光電流密度圖…………………...................…75 圖 4.1.26 二氧化鈦奈米管於99%N2+1%H2 氣氛退火，溫度從400℃到 750℃持溫2hr 於可見光光源照射之光電流密度圖……………….....…75 圖 4.1.27 二氧化鈦奈米管於空氣氣氛退火，溫度從400℃到750℃持 溫4hr 於可見光光源照射之光電流密度圖…………………………...…76 圖 4.1.28 二氧化鈦奈米管於99%N2+1%H2 氣氛退火，溫度從400℃到 750℃持溫4hr 於可見光光源照射之光電流密度圖.............................…76 圖 4.1.29 二氧化鈦奈米管於空氣氣氛退火，溫度從400℃到750℃持 溫2hr 之Ti 2p 的能譜圖…………………………………..…………...…77 圖 4.1.30 二氧化鈦奈米管於空氣和還原氣氛溫度700℃持溫4hr 之縱 深分析……………………………………………………………….....…80 圖 4.1.31 二氧化鈦奈米管於還原氣氛退火，溫度700℃持溫4hr 之 IPCE 圖……………………......……...………………………………...…82 圖 4.1.32 二氧化鈦奈米管於還原氣氛退火，溫度600℃持溫4hr 之 IPCE 圖………………………………………………......................……..82 圖 4.1.33 二氧化鈦奈米管於空氣氣氛退火，溫度700℃持溫4hr 之 IPCE 圖………………………………………………………………....…83 圖 4.1.34 二氧化鈦奈米管於空氣氣氛退火，溫度600℃持溫4hr 之 IPCE 圖…………….…………………………………………………...…83 圖 4.1.35 二氧化鈦奈米管於空氣氣氛下退火，溫度600℃持溫4hr 之 I-t curve………………………...………………………………….…...…85 圖 4.1.36 二氧化鈦奈米管於還原氣氛下退火，溫度600℃持溫4hr 之 I-t curve………………………………………………………….……..…85 圖 4.2.1 SDT 熱重分析圖。A 曲線為煆燒時試樣之吸放熱表現，B 曲線 為煆燒成相釋出CO2 以及燒結時去除黏結劑之重量損失……….....…87 圖 4.2.2 觀察Ag2O 於(A)C2H5OH 未改質(B)DI-water 改質濕磨之沉降 裝置圖…………………………….……................................................…89 圖 4.2.3 觀察Nb2O5 於(A)C2H5OH 未改質(B)DI-water 改質濕磨之沉降 裝置圖…………….……........................................................................…90 圖 4.2.4 觀察SrCO3 於(A)C2H5OH 未改質(B)DI-water 改質濕磨之沉降 裝置圖…………………….....................................................................…90 圖 4.2.5 觀察SrTiO3 於(A)C2H5OH 未改質(B)DI-water 改質濕磨之沉降 裝置圖………………………...………………………..........................…91 圖 4.2.6 觀察TiO2於(A)C2H5OH未改質(B)DI-water 改質濕磨之沉降裝 置圖…………………………………………………………….……........91 圖 4.2.7 TiO2於C2H5OHG為改質濕磨之TEM圖…………...............…92 圖 4.2.8 TiO2於DI-water 改質濕磨之TEM圖…………………….....…93 圖 4.2.9 SrCO3於C2H5OH未改質濕磨之TEM圖…………………...…93 圖 4.2.10 SrCO3於DI-water 改質濕磨之TEM圖……………..……..…94 圖 4.2.11 SrCO3於C2H5OH未改質濕磨之TEM圖……………......…...94 圖 4.2.12 SrCO3於DI-water 改質濕磨之TEM圖…………………....…95 圖 4.2.13 Ag2O於C2H5OH未改質濕磨之TEM圖…………………..…95 圖 4.2.14 Ag2O於DI-water 改質濕磨之TEM圖……………………..…96 圖 4.2.15 SrTiO3於C2H5OH未改質濕磨之TEM圖..………………..…96 圖 4.2.16 SrTiO3 於DI-water 未改質濕磨之TEM圖..………….....……97 圖 4.2.17 四種混(Ag0.75Sr0.25)(Nb0.75Ti0.25)O3 於不同溫度燒結之XRD 圖………………………………………………………………….....……99 圖 4.2.18 四種混(Ag0.75Sr0.25)(Nb0.75Ti0.25)O3 於溫度1100℃燒結之XRD 圖………………………...…………....................................................…100 圖 4.2.19 三種混(Ag0.75Sr0.25)(Nb0.75Ti0.25)O3 於溫度1040℃進行兩段式 燒結之XRD圖…………………………………………………………..100 圖 4.2.20 四種混有加分散劑(Ag0.75Sr0.25)(Nb0.75Ti0.25)O3 於溫度1040℃ 進行兩段式燒結之XRD圖…………………………………………..…101 圖 4.2.21 三種混有加分散劑(Ag0.75Sr0.25)(Nb0.75Ti0.25)O3 於溫度1040℃ 進行兩段式燒結之XRD圖...…………………………………………...101 圖 4 . 2 .2 2 四種混之(Ag0 . 7 5 S r 0 . 2 5 ) ( N b 0 . 7 5 T i 0 . 2 5)O3 於溫度 (a)1100℃(b)1060℃(c)1040℃(d)1020℃之微結構圖，(e)為AgNbO3(f)為 SrTiO3……………………………………………………………………104 圖 4 . 2 .2 3 四種混之(Ag0 . 7 5 S r 0 . 2 5 ) ( N b 0 . 7 5 T i 0 . 2 5)O3 於溫度 (a)1100℃(b)1060℃(c)1040℃(d)1020℃之微結構圖，(e)為AgNbO3(f)為 SrTiO3…....…………............................................................................…105 圖 4.2.24 四種混之(Ag0.75Sr0.25)(Nb0.75Ti0.25)O3 於溫度 1040℃持溫4hr 第二相之EDS…………………………………………………....…...…106 圖 4.2.25 四種混之(Ag0.75Sr0.25)(Nb0.75Ti0.25)O3 於溫度 1040℃持溫4hr 非第二相之EDS ………………………………...............…………...…107 圖 4.2.26 四種混之(Ag0.75Sr0.25)(Nb0.75Ti0.25)O3 於溫度1040℃進行兩段 式燒結之微結構圖…………………………………………....……...…108 圖 4.2.27 三種混之(Ag0.75Sr0.25)(Nb0.75Ti0.25)O3 於溫度 1040℃進行兩段 式燒結之微結構圖………………………………………....………...…108 圖 4.2.28 四種混加分散劑之(Ag0.75Sr0.25)(Nb0.75Ti0.25)O3 於溫度 1040℃ 進行兩段式燒結之微結構圖…………….....………………………..…108 圖 4.2.29 三種混加分散劑之(Ag0.75Sr0.25)(Nb0.75Ti0.25)O3 於溫度 1040℃ 進行兩段式燒結之微結構圖………………………………………...…109 圖 4.2.30 四種混之(Ag0.75Sr0.25)(Nb0.75Ti0.25)O3 於溫度 1040℃持溫4hr 之EPMA..………………………………………...…………………...…110 圖 4.2.31 四種混之(Ag0.75Sr0.25)(Nb0.75Ti0.25)O3 於不同燒節溫度之吸收 光譜圖……………………………………………………....………...…113 圖 4.2.32 三種混及四種混之(Ag0.75Sr0.25)(Nb0.75Ti0.25)O3 於溫度 1040℃ 進行兩段式燒結之吸收光譜圖………………………………….......…113 圖 4.2.33 四種混有無分散劑之(Ag0.75Sr0.25)(Nb0.75Ti0.25)O3 於溫度 1040℃進行兩段式燒結之吸收光譜圖……………………………...…114 圖 4.2.34 三種混有無分散劑之(Ag0.75Sr0.25)(Nb0.75Ti0.25)O3 於溫度 1040℃進行兩段式燒結之吸收光譜圖……………………………...…114 表目錄 表2.4.1 銳鈦礦和金紅石結構之基本性質比較………………...…....…11 表2.5.1 二氧化鈦奈米管於定電壓10V 不同溫度下，其管壁厚度和管 長變化情形………………………………………………………….....…15 表2.5.2 二氧化鈦奈米管於不同組成、不同pH 值和不同陽極處理條件 下，其尺寸的變化情形…........................................................………...…17 表2.8.1 三種濕式分散設備之優缺點比較….……...………………..…34 表3.1 製備二氧化鈦奈米管之藥品清單………….………………......…35 表3.2 製備(Ag0.75Sr0.25)(Nb0.75Ti0.25)O3 之藥品清單………….......…...…36 表4.1.1 二氧化鈦奈米管於空氣和99%N2+1%H2 氣氛，溫度從400℃到 750℃之rutile ratio……...…………………………......…………..…...…61 表4.1.2 二氧化鈦奈米管於空氣氣氛退火，溫度從400℃到750℃持溫 2hr 之Ti 2p1/2之XPS 訊息..…………………………………………....…78 表4.2.1 Ag2O、Nb2O5、SrCO3、TiO2 和SrTiO3 分別於加入分散劑之去 離子水和無水酒精濕磨之介達電位………………...…...…………...…88 表4.2.2 圖4.2.30 之A與B之EPMA定量分析…………………..…..…111 | |
| dc.language.iso | zh-TW | |
| dc.subject | 光觸媒 | zh_TW |
| dc.subject | 光電性質 | zh_TW |
| dc.subject | 光分解水 | zh_TW |
| dc.subject | 二氧化鈦奈米管 | zh_TW |
| dc.subject | TiO2 nanotubes | en |
| dc.subject | IPCE | en |
| dc.subject | photocatalyst | en |
| dc.subject | efficiency | en |
| dc.title | 新穎光觸媒光電性質及光分解水表現之研究與探討 | zh_TW |
| dc.title | Study of Photo-absorption and Photoelectrolytic Properties of Novel Photocatalysts | en |
| dc.type | Thesis | |
| dc.date.schoolyear | 98-2 | |
| dc.description.degree | 碩士 | |
| dc.contributor.oralexamcommittee | 林招松,郭錦龍,陳敏璋 | |
| dc.subject.keyword | 光觸媒,光電性質,光分解水,二氧化鈦奈米管, | zh_TW |
| dc.subject.keyword | photocatalyst,IPCE,TiO2 nanotubes,efficiency, | en |
| dc.relation.page | 128 | |
| dc.rights.note | 有償授權 | |
| dc.date.accepted | 2010-08-06 | |
| dc.contributor.author-college | 工學院 | zh_TW |
| dc.contributor.author-dept | 材料科學與工程學研究所 | zh_TW |
| 顯示於系所單位： | 材料科學與工程學系 | |
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