葡萄糖製程添加物對製得氧化鋅粉體之特性分析

Characterization of ZnO powder prepared with or without process additive of glucose

周宏宇(Hung-Yu Chou)

指導教授 ： 余宣賦

淡江大學/工學院/化學工程與材料工程學系碩士班/碩士(2011年)

https://doi.org/10.6846/TKU.2011.00886

摘要

本實驗結合沉澱法和燃燒法製備C/ZnO 光觸媒粉體。並以X-ray 繞射分析儀，遠紅外線光譜分析，熱重分析儀和熱差式熱分析儀，紫外光-可見光光譜分析儀，微量元素分析儀，電子掃描式顯微鏡及電子穿透式顯微鏡及比表面積測定儀 和 螢光光譜儀等儀器來分析其製備之C/ZnO光觸媒粉體特性。實驗結果顯示C/ZnO最佳製備條件為沉澱物：葡萄糖＝1：0.9，煆燒溫度900℃，其物種(0.9-900℃)有最佳的光催化活性。我們也將所獲得C/ZnO奈米粉體之光催化能力以動力學探討並量化。C/ZnO物種 (0.9-900℃)之觸媒特性常數kA,m為0.86 L/g．min，比一般市售二氧化鈦粉體P25的觸媒特性常數kA,m＝0.38 L/g．min高出非常多。

關鍵字

氧化鋅 ； 光觸媒 ； 光催化活性 ； 沉澱法 ； 燃燒法

並列摘要

C/ZnO photocatalysts were prepared by a method combining precipitation and combustion techniques. The prepared C/ZnO photocatalysts were characterized by X-ray diffraction, inferred spectroscopic analysis, thermogravimetric analysis and differential scanning calorimetry, UV-Vis absorption spectroscopy, energy dispersive X-ray analysis mapping, scanning electron microscopy, transmission electron microscopy, Brunauer–Emmett–Teller sorptometer, and photoluminescence spectra analysis. The results show that the optimum preparation condition for C/ZnO is precipitate : glucose＝1 : 0.9, at 900℃, which this specimen (0.9-900℃) shows the best photocatalytic activity. The photocatalytic abilities of the obtained C/ZnO nanoparticles were kinetically studied. The kA,m of C/ZnO (0.9-900℃), was 0.86 L/g．min, which was much higher than that of P25 (kA,m＝0.38 L/g．min).

並列關鍵字

zinc oxide ； glucose ； photocatalsdt ； photocatalytic activity ； precipitation ； combustion

參考文獻

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