本文選題：石墨烯-金(Graphene-Au)納米復(fù)合材料　切入點(diǎn)：石墨烯-硫化鎘(Graphene-CdS)納米復(fù)合材料　出處：《華東師范大學(xué)》2011年碩士論文

【摘要】：石墨烯(Graphene)是由單層碳原子緊密堆積成二維蜂窩狀晶格結(jié)構(gòu)的一種碳質(zhì)新材料,近年來(lái)在實(shí)驗(yàn)研究和科學(xué)理論方面引起了人們的極大關(guān)注。由于其獨(dú)特的納米結(jié)構(gòu)和優(yōu)異的性能,Graphene在組建納米復(fù)合材料方面極具潛力和吸引力。 Graphene能夠通過(guò)化學(xué)還原法還原石墨氧化物大量制備,但是被還原的Graphene傾向于形成不可逆轉(zhuǎn)的團(tuán)聚物,甚至重新形成石墨。因此為了獲得高質(zhì)量的Graphene,通�？梢圆捎迷贕raphene上生長(zhǎng)一些無(wú)機(jī)分子或聚合物減少Graphene的團(tuán)聚。 在Graphene上沉積無(wú)機(jī)材料,如金屬、半導(dǎo)體、絕緣體納米顆�；蚣{米簇能夠形成優(yōu)良的Graphene復(fù)合材料。同時(shí),Graphene和某些功能粒子整合之后在新的交叉應(yīng)用方面有獨(dú)特的特點(diǎn),例如在光學(xué)、電氣、催化、傳感器等方面。此外,大量生產(chǎn)Graphene的成本遠(yuǎn)低于碳納米管(CNTs)。因此Graphene有望成為碳材料的新代表,有著廣闊的應(yīng)用前景。 本文主要研究了微波加熱法制備金納米顆粒(Au)、硫化鎘(CdS)量子點(diǎn)、石墨烯-金納米(Graphene-Au)復(fù)合材料和石墨稀-硫化鎘(Graphene-CdS)納米復(fù)合材料。通過(guò)優(yōu)化反應(yīng)溫度、微波功率和微波時(shí)間,可控制備了尺寸分布均一的Au納米顆粒和CdS量子點(diǎn)。并且通過(guò)微波加熱的方法在溶液中還原石墨氧化物和Au或CdS前驅(qū)體,成功制備了結(jié)構(gòu)穩(wěn)定、性能優(yōu)良的Graphene-Au納米復(fù)合材料和Graphene-CdS納米復(fù)合材料。由于微波加熱法能快速簡(jiǎn)單地合成納米材料及納米復(fù)合材料,并且在合成Graphene時(shí)無(wú)需使用劇毒的還原試劑,因此,該方法具有廣泛的應(yīng)用前景。
[Abstract]:Graphene (Graphene) is a new type of carbon material, which is composed of single layer carbon atoms and packed into a two-dimensional honeycomb lattice structure. In recent years, great attention has been paid to the experimental research and scientific theory. Because of its unique nanostructures and excellent properties, Graphene has great potential and attraction in the fabrication of nanocomposites. Graphene can be reduced to a large amount of graphite oxide by chemical reduction, but the reduced Graphene tends to form irreversible aggregates. Therefore, in order to obtain high quality Graphene, some inorganic molecules or polymers can be grown on Graphene to reduce the agglomeration of Graphene. Inorganic materials such as metals, semiconductors, insulator nanoparticles or nanoclusters deposited on Graphene can form excellent Graphene composites. For example, in optics, electricity, catalysis, sensors and so on. In addition, the cost of mass production of Graphene is much lower than that of CNTs. Therefore, Graphene is expected to become a new representative of carbon materials and has a broad application prospect. In this paper, the preparation of au (au) nanocrystalline, cadmium sulfide (CDs) quantum dots, graphene / gold nanocrystalline Graphene-Aue) composites and graphite dilute cadmium sulfide Graphene-CdS nanocomposites by microwave heating were studied. The reaction temperature, microwave power and microwave time were optimized. Au nanoparticles and CdS quantum dots with uniform size distribution can be controlled, and the structure is stable by reducing graphite oxide and au or CdS precursors in solution by microwave heating. Graphene-Au nanocomposites and Graphene-CdS nanocomposites with excellent properties. Because microwave heating can synthesize nanomaterials and nanocomposites quickly and simply, and there is no need to use highly toxic reduction reagents in the synthesis of Graphene, therefore, This method has a wide application prospect.
【學(xué)位授予單位】：華東師范大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2011
【分類(lèi)號(hào)】：TB383.1

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