請用此 Handle URI 來引用此文件: http://hdl.handle.net/11455/5478
標題: 以化學氣相沈積法製備CNTs-TiO2複合材料去除氣相丙酮之研究
Fabrication of CNTs/TiO2 Nanocomposite via Modified Chemical Vapor Deposition Method for Acetone Removal from Air Sterams
作者: 葉益華
Yeh, Yi-Hua
關鍵字: carbon nanotube
奈米碳管
titanium dioxide
nanocomposite
chemical vapor deposition
光觸媒
複合材料
化學氣相沉積
出版社: 環境工程學系所
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摘要: 本研究主要目的為使用化學氣相沉積法製備奈米碳管與光觸媒複合材料,並尋找最佳之製備條件,針對空氣污染物-丙酮進行觸媒催化分解處理技術應用之潛能。本實驗求取最佳奈米碳管/光觸媒比例、披覆量、前趨物負荷及反應溫度等操作條件,以提升奈米碳管/光觸媒催化丙酮之效率。研究中並進對材料進行XRD、SEM、TEM、TGA、UV-vis、BET及等FL特性分析討論其差異,材料特性分析結果顯示,化學氣相沉積法製備複合材料,可將光觸媒均勻分散於奈米碳管表面,其粒徑大小約20 nm、晶相主要為銳鈦礦;由熱重分析儀結果顯示,奈米碳管於480oC時,開始重量損失,經800oC鍛燒後之殘於重量比約41%;由比表面積分析儀結果顯示,發現添加奈米碳管之含量可增加複合材料之比表面積及孔洞體積。由觸媒催化實驗發現,奈米碳管比例中以31%CNTs/TiO2之複合材料具有最佳觸媒催化之效能、於披覆厚度15.56
In this study student try to combine the advantage of carbon nanotubes (CNTs) and titanium dioxide (TiO2) by chemical vapor deposition (CVD)and to obtain the optimum nanophotocatalyst composite preparation procedure. And to study the characterization properties of nanocomposites with various CNTs containing ratios of 0~50%.From the transmission electron microscopy (TEM) images displayed that the TiO2 particles were uniformly coated on the CNTs surface and the CNTs appear in the composite can make the TiO2 particles well disperse. The X-ray diffraction (XRD) analysis showed that the TiO2 on CNTs surface was Anatase crystallize phase. The TGA results showed that the gasification temperature of CNTs is about 480oC. After the calcinations at 800oC, the CNTs had residue about 41% and the nanocomposites still had 80%. The 31%-CNTs/TiO2 nanocomposites show the best performance for degrading acetone vapor from air streams. When the thickness of the CNTs/TiO2 nanocomposite is 15.56
URI: http://hdl.handle.net/11455/5478
其他識別: U0005-2407200817271800
文章連結: http://www.airitilibrary.com/Publication/alDetailedMesh1?DocID=U0005-2407200817271800
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