Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/5533
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dc.contributor.advisor謝永旭zh_TW
dc.contributor.advisorYung-Hsu Hsiehen_US
dc.contributor.author陳筠樺zh_TW
dc.contributor.authorChen, Yun-Huaen_US
dc.date2004zh_TW
dc.date.accessioned2014-06-06T06:35:00Z-
dc.date.available2014-06-06T06:35:00Z-
dc.identifier.urihttp://hdl.handle.net/11455/5533-
dc.description.abstract本研究是以化學沉積法製備二氧化鈦薄膜反應器配合365nm波長紫外燈管,進行雙氯酚化合物分解行為之探討。 實驗系統採迴流批次式,以HPLC及IC分析方法探討在不同pH值及初始濃度下,2,4二氯酚和2,6二氯酚去除率,並比較2,4二氯酚和2,6二氯酚,在初始濃度為10ppm、pH值為3條件下的去除率。 結果發現2,4二氯酚是一種較高揮發性氯酚化合物,在pH=3、50ppm條件下,揮發為20%左右;在吸附實驗中可發現在,高pH值時的吸附量幾乎為零;在直接光解實驗中,2,4二氯酚在高pH值下分解率較高;在光催化實驗中,只有在低濃度及低pH值下,降解率達50%以上;而2,6二氯酚在pH=3(10ppm,50ppm,100ppm)的揮發率為20%,在高pH值下幾乎沒有揮發量;在低pH值時發現有吸附量,但在pH>7就沒有吸附量,由實驗中發現揮發及吸附結果較不受濃度效應影響;在直接光解中,殘留率會隨著pH值下降而減少;在光催化實驗中,若將其數據與背景實驗相比較可發現,在高pH值下2,6二氯酚降解率較高;而濃度效應,則是濃度越小,降解率越高。 將2,4二氯酚及2,6二氯酚,在初始濃度為10ppm、pH=3下進行8小時的光催化分解,發現2,6二氯酚比2,4二氯酚降解效果好。最後根據簡化後的Langmuir-Hinshelwood來描述二氧化鈦光催化雙氯酚的反應模式符合擬一階反應速率(R2值在0.9以上)。zh_TW
dc.description.abstractThis investigation used a tube reactor deposited with TiO2 thin film inside by chemical vapor deposition(CVD)method and a UV lamp with 365nm to study the decomposition behavior of dichlorophenols in heterogeneous photocatalysis. The experimental equipment was a batch recycle system. The degradation and dechlorination at different initial concentration and pH for 2,4-DCP and 2,6-DCP was determined by HPLC and IC. Finally, the comparison of the degradation of 2,4-DCP and 2,6-DCP at low initial concentration and pH (10ppm、pH=3) was discussed. The results suggested that 2,4-DCP has high volatility. No significant adsorption was detected for the 2,4-DCP at high pH. In the presence of both TiO2 and UV light, 2,4-DCP at low initial concentration was found to degrade more than half after four hours at low pH. No significant volatilization and adsorption was detected for the 2,6-DCP at high pH, and these two behavior was not affected by initial concentration of reactant. When the pH increased or initial concentration of reactant decreased, the photodegradation rate of 2,6-DCP increased. The photocatalysis of 2,4-DCP and 2,6-DCP at low initial concentration of reactant (10ppm) and low pH (pH=3) was also studied. After eight hours of reaction time, it was found that the degradation effect of 2,6-DCP was better than 2,4-DCP, and the photocatalytic process of these two reactants can be fitted by a pseudo-first-order kinetic model.zh_TW
dc.description.tableofcontents摘要 I 目 錄 III 表 目 錄 VIII 圖 目 錄 IX 圖 目 錄 IX 第一章 前言 1 1-1 研究緣起 1 1-2研究內容與目的 1 第二章 文獻回顧 3 2-1氯酚有機化合物 3 2-1-1氯酚有機化合物之用途 3 2-1-2氯酚有機化合物之危害性 3 2-1-3二氯酚之基本性質 4 2-2光化學反應 7 2-2-1 紫外光之特性 7 2-2-2 光化學反應理論 7 2-3半導體 11 2-3-1半導體的性質 11 2-3-2半導體的種類 13 2-3-3半導體之異相光催化原理與機制 13 2-4 光催化反應器 17 2-4-1化學氣相沈積法(Pierson et al., 1992) 17 2-5 影響半導體異相光催化反應之因子 21 2-5-1 反應物初始濃度 21 2-5-2 pH值 22 2-6 反應動力模式 24 2-7哈梅特方程式( Hammett equation) 28 第三章 實驗設備與方法 31 3-1實驗藥品 31 3-2實驗設備 32 3-3實驗方法 34 3-3-1光反應器製備 34 3-3-2紫外光/光觸媒氧化程序 35 3-4分析項目 38 3-4-1無機性離子分析 38 3-4-2反應物與生成物分析 38 3-4-3-1高效液相層析儀(HPLC) 38 3-5 藥品配置 39 3-5-1無機離子分析 40 3-5-1-1沖提液配製 40 3-5-2高效液相層析儀(HPLC) 40 3-5-2-1沖提液配製 40 3-5-2-2儲備液的配製 41 3-5-4其他藥品 41 第四章 結果與討論 43 4-1光觸媒特性分析 43 4-1-1 X-ray 繞射結晶分析儀(XRD)分析結果 43 4-1-2 掃描式電子顯微鏡分析結果 45 4-2 2,4二氯酚之實驗結果 48 4-2-1 背景實驗 48 4-2-1-1 揮發實驗 48 4-2-1-2 吸附實驗 50 4-2-1-3 直接光解實驗 51 4-2-2 光催化實驗 54 4-3 2,6二氯酚之實驗結果 57 4-3-1 背景實驗 58 4-3-1-1 揮發實驗 58 4-3-1-2 吸附實驗 59 4-3-1-3 直接光解實驗 60 4-3-2 光催化實驗 63 4-4 2,4二氯酚及2,6二氯酚之比較 66 4-5 反應動力式 69 第五章 結論與建議 74 5-1 結論 74 5-2 建議 75zh_TW
dc.language.isoen_USzh_TW
dc.publisher環境工程學系zh_TW
dc.subjectphotocatalysisen_US
dc.subject光催化zh_TW
dc.subjectdichlorophenolen_US
dc.subjectchemical vapor deposition methoden_US
dc.subjecttitanium dioxideen_US
dc.subject雙氯酚zh_TW
dc.subject化學氣相沉積法zh_TW
dc.subject二氧化鈦zh_TW
dc.title以CVD法製備TiO2光觸媒反應器去除水溶液中雙氯酚反應行為之研究zh_TW
dc.titleA Study on Immobized TiO2 Photocatalyst Prepared by CVD Method for Dichlorophenol Photodegrationen_US
dc.typeThesis and Dissertationzh_TW
item.languageiso639-1en_US-
item.openairetypeThesis and Dissertation-
item.cerifentitytypePublications-
item.grantfulltextnone-
item.fulltextno fulltext-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
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