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氧化鋅與氧化石墨烯奈米複合材料之製備、性質，與應用 = ZnO/grap...

國立高雄大學化學工程及材料工程學系碩士班

氧化鋅與氧化石墨烯奈米複合材料之製備、性質，與應用 = ZnO/graphene oxide nanocomposites：preparation, properties, and applications

紀錄類型:	書目-語言資料,印刷品 : 單行本
並列題名:	ZnO/graphene oxide nanocomposites：preparation, properties, and applications
作者:	陳雅君,
其他團體作者:	國立高雄大學
出版地:	[高雄市]
出版者:	撰者;
出版年:	2012[民101]
面頁冊數:	99面圖，表格 : 30公分;
標題:	氧化鋅
標題:	Zinc Oxide
電子資源:	http://handle.ncl.edu.tw/11296/ndltd/46519360619325506690
附註:	參考書目：面80-87
其他題名:	氧化鋅與氧化石墨烯奈米複合材料之製備、性質,與應用
其他題名:	氧化鋅與氧化石墨烯奈米複合材料之製備性質與應用
摘要註:	本論文分為兩個部分，首先是利用Hummers method合成氧化石墨烯，再以硼氫化鈉與高溫氫氣還原處理，並探討氧化石墨烯的還原機制。藉由X射線繞射光譜儀與傅立葉紅外光光譜儀分析結果可知，氧化石墨烯上含氧基團減少且面間距縮減，可知氧化石墨烯在還原處理中成功被還原。此外，氧化石墨烯做熱處理的實驗結果顯示加熱至200℃以上，含氧基團開始大量脫附，亦可使得氧化石墨烯產生還原，故實驗中選擇水溶性佳的氧化石墨烯和氧化鋅做複合材料之研究。第二部分是以低溫製程合成氧化石墨烯/氧化鋅奈米複合材料，並探討退火溫度對於其成分、結構，與性質的影響。製備方法是將氧化石墨烯滴注於溶液法合成之氧化鋅奈米柱上，並施以不同溫度之熱處理。由掃描式電子顯微鏡顯示在退火溫度由150℃升至400℃的過程之中，複合材料中之氧化石墨烯會由團聚轉為均勻分散。此外，氧化鋅奈米柱上出現尺寸約20-30 nm之顆粒。由高解析穿透式電子顯微鏡和X光能譜散佈分析儀可知這些奈米顆粒是氧化鋅奈米粒子。而藉由傅立葉轉換紅外光譜儀分析亦可知隨退火溫度增加，複合材料表面之氧化石墨烯含氧基團會產生變化，且氧化鋅之吸收峰有偏移，可知此氧化鋅和石墨烯有耦合作用。再者，這些氧化石墨烯/氧化鋅奈米複合材料亦可應用為表面增益拉曼散射基板，於增益微量化學分子R6G (Rhodamine 6G)之實驗中，發現其拉曼峰值之強度隨退火溫度改變產生變化，於退火200℃之試片有最大的增益效應，此增益歸因於氧化鋅與氧化石墨烯的變化與耦合。 This work includes two parts, the first one is to synthesize graphene oxide (GO) by Hummers method and study the chemical reduction of GO by NaBH4 and H2 treatments. X-ray diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR) show the d-spacing and oxygen-containing groups of GO were decreased after the reduction treatments. Besides, heat treatments show the oxygen-containing groups of GO powders begin to be desorbed at the temperature of 200℃. The results show that the GO could also be reduced by directly heating in air. The second part of the work is to synthesize graphene oxide /zinc oxide (ZnO) nanocomposites and study the effects of heat treatments on the composition, structure, and properties of the nanocomposites. The nanocomposites were prepared by drop-casting GO on ZnO nanorod arrays. Scanning electron microscopy shows that the morphology of GO in the composites transform from clusters to uniform sheets. Besides, there are numerous ZnO nanoparticles generated beside the nanorods, evidenced by transmission electron microscopy and X-ray energy-dispersive spectrometer. FTIR shows the oxygen-containing groups and ZnO-related peaks of the nanocomposites varied and shifted with the increase of temperature from 100 to 400 ℃, which indicates the coupling of ZnO and GO. The GO/ZnO nanocomposites were applied as surface-enhanced Raman scattering (SERS) substrates to detect the low-concentration molecules of Rhodamine 6G. (R6G). Raman spectra demonstrate that the Raman signal of R6G were significantly enhanced, and there is an optimized temperature at around 200℃ for the maximum enhancement factors. An enhancement mechanism involving the variation and coupling of GO and ZnO were proposed to explain the phenomenon.

氧化鋅與氧化石墨烯奈米複合材料之製備、性質，與應用 = ZnO/graphene oxide nanocomposites：preparation, properties, and applications
陳, 雅君

氧化鋅與氧化石墨烯奈米複合材料之製備、性質，與應用 = ZnO/graphene oxide nanocomposites：preparation, properties, and applications / 陳雅君撰 - [高雄市] : 撰者, 2012[民101]. - 99面 ; 圖，表格 ; 30公分.
參考書目：面80-87.
氧化鋅Zinc Oxide

氧化鋅與氧化石墨烯奈米複合材料之製備、性質，與應用 = ZnO/graphene oxide nanocomposites：preparation, properties, and applications
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