氧化鋅／石墨烯奈米複合材料及氧化銅／石墨烯奈米複合材料的合成與物性之研究

Synthesis and Physical Properties of Zinc Oxide/Graphene and Copper Oxide/Graphene Nanocomposites

我們研究了一種通過水熱技術原位合成氧化鋅／還原氧化石墨烯（ZnO/rGO）奈米複合材料的一步法。這種簡單的方法包括對包含氧化石墨烯（GO）、ZnCl2 和NaOH 的溶液進行水熱處理，以獲得產物（ZnO/rGO 複合材料）。產物通過X 射線衍射（XRD）、傅里葉變換紅外光譜（FT-IR）、紫外—可見—近紅外（UV-Vis-NIR）光譜和TGA 進行表徵。這些結果證實氧化石墨烯的還原確實形成了ZnO 晶體結構。UV-Vis 光譜的藍移表明氧化石墨烯表面還原氧化鋅為鍵合狀態，在NIR 處接觸強吸收。這些觀察結果對由金屬氧化物和氧化石墨烯製備的奈米複合材料具有非常重要的影響。我們成功觀察到氧化銅鍵結到石墨烯的特性和應用的可行性。合成氧化銅／還原氧化石墨烯實驗的第一步，進一步我們發現了一種新的綠色合成催化劑，反應在室溫下攪拌過夜後成功合成了複合材料，這一發現可以合成不需要能源消耗，為當今綠色合成方法做出巨大貢獻。

An one-step in situ method for the synthesis of zinc oxide/reduced graphene oxide (ZnO/rGO) nanocomposites by hydrothermal technique is reported. This simple method involves a hydrothermal treatment of a solution comprising of graphene oxide (GO), ZnCl2, and NaOH, to obtain the product (ZnO/rGO composite). The product was characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), Ultravioletvisiblenear infrared (UV-Vis-NIR) spectroscopy, and TGA. These results confirm that ZnO crystal structure does form on reduction of graphene oxide. The blue shift of UV-Vis spectra indicates that zinc oxide on reduction of graphene oxide surface is bonding status, and contacting strong absorption at NIR. These observations have very important influence on nanocomposites prepared from metal-oxide and graphene oxide. Our success copper oxide key junction to graphene observe its characteristics and applications of feasibility. The first step of the experiment for the synthesis of a copper oxide/reduced graphene oxide, further we found a new green synthesis catalyst, the reaction was stirred at room temperature after overnight to successfully synthesized composite, This discovery can synthesize the composite without energy consumption, for today’s great contribution to green synthesis method.