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研究生:林欣慧
研究生(外文):Hsin-hui Lin
論文名稱:以矽藻土為載體製備二氧化鈦光觸媒之製程與性質研究
論文名稱(外文):PREPARATION AND PHOTOCATALYTIC PROPERTIES OF TITANIUM DIOXIDE-DIATOM COMPOSITE POWDER
指導教授:林永仁林永仁引用關係
指導教授(外文):Yung-jen Lin
口試委員:林永仁
口試委員(外文):Yung-jen Lin
口試日期:2015-07-17
學位類別:碩士
校院名稱:大同大學
系所名稱:材料工程學系(所)
學門:工程學門
學類:材料工程學類
論文種類:學術論文
論文出版年:2015
畢業學年度:103
語文別:中文
論文頁數:87
中文關鍵詞:光降解廢水處理吸附矽藻土光觸媒
外文關鍵詞:PhotodegradationWastewater TreatmentAdsorptionDiatomphotocatalytic
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二氧化鈦是一種常見的光觸媒,因其穩定、無毒便宜等特性而被廣泛使用於污染處理。本研究將矽藻土先採用酸洗的方式進行前處理,然後以矽藻土為載體,將四異丙基化鈦製備之二氧化鈦(TiO2)粉末和商用TiO2(P)粉末披覆在矽藻土上,分別製備成Diatom/TiO2、Diatom/P觸媒粉末。藉由XRD 研究粉末的結晶型態,光催化活性測試是在亞甲基藍水溶液中照射紫外光進行催化。研究結果顯示,矽藻土在亞甲基藍水溶液中有很強的吸附能力,可以將亞甲基藍部分吸附,觸媒粉末在亞甲基藍溶液中先吸附再進行光催化,實驗結果得知以矽藻土為載體能有效提升自製TiO2光降解效率,但對商用P粉末的光催化能力並無明顯提昇。
Phtocatalysis of titanium dioxide has been widely investigated due to its potential application in degradation of pollutant and production of hydrogen. In this study, diatom was used as a support of titanium oxide to investigate the photocatalytic effect of diatom/ TiO2 composite powder.
After cleaning with sulfuric acid, two diatom/ TiO2 composite powders were fabricated for comparison. (1) Diatom was infiltrated with titanium isopropoxide solution to form diatom/TiO2 composite powder after heat treatment. (2) Diatom was also with mixed with commercial TiO2 powder to form diatom/P powders. Crystal structure was identified with XRD. The photocatalytic activity was evaluated by the degradation of methylene blue under UV light. The results showed that diatom is a strong absorbent for methylene blue. Composite catalyst powder would absorb first and then photocatalytic in methylene blue solution. It was found that diatom effectively improved the photodegradation efficiency of TiO2 made from titanium isoporpoxide. However, there was no sign of improvement for commercial P powder.
摘要 i
Abstract ii
目錄 iii
圖目錄 v
表目錄 x
第一章 前言 1
第一節 緒論 1
第二節 研究目的 3
第二章 文獻回顧 4
第一節 光觸媒 4
第二節 二氧化鈦(Titanium Dioxide, TiO2) 13
第三節 載體光觸媒 17
第四節 載體光觸媒的合成 22
第三章 實驗方法 25
第一節 使用藥品與儀器 25
第二節 實驗流程 26
第三節 儀器簡介與性質分析 30
第四節 光降解實驗 35
第四章 結果與討論 43
第一節 矽藻土之燒結密度及開孔隙率 43
第二節 粒徑分析 44
第三節 XRD分析 45
第四節 TGA/DTA分析 49
第五節 比表面積分析 51
第六節 SEM微觀結構分析 54
第七節 光降解分析 61
第五章 結論 74
參考文獻 76
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