【摘要】：石墨烯是一種由單層碳原子緊密排列而成的二維蜂窩狀晶格結(jié)構(gòu)的納米材料。石墨烯與其他碳材料相比,比表面積更大、電子遷移率更高、電化學(xué)穩(wěn)定性更好。由于它具有如此優(yōu)異的性能,所以石墨烯被廣泛的應(yīng)用于納米復(fù)合材料的制備中以提高納米材料的性能。本論文通過石墨烯改性半導(dǎo)體基光催化材料,以改善半導(dǎo)體材料光催化性能。我們采用微波法制備了石墨烯/半導(dǎo)體納米復(fù)合光催化材料,并對其進行表征、性能測試,主要內(nèi)容如下：(1) 運用Hummers法以天然鱗片石墨作為原料制備氧化石墨,再經(jīng)過超聲作用剝離成為氧化石墨烯。用)KRD、Raman、SEM、TEM進行物相結(jié)構(gòu)表征。(2) 通過微波法以氧化石墨烯和硝酸鋅作為反應(yīng)原料,制備石墨烯/氧化鋅。對制備的材料進行了TEM、SEM和XRD測試。結(jié)果表明制備的氧化鋅是單晶結(jié)構(gòu),石墨烯和氧化鋅成功復(fù)合,并提高了氧化鋅的光催化性能。(3) 通過微波法以氧化石墨烯、醋酸鋅和硝酸銀作為反應(yīng)原料,制備石墨烯/氧化鋅/銀。對制備的材料進行Raman、TEM、SEM、PL和XRD測試。結(jié)果表明石墨烯、氧化鋅和銀三種材料很好的復(fù)合在一起,加入銀后,三元復(fù)合材料與石墨烯/氧化鋅相比,光催化性能得到明顯提升。(4) 通過微波法以氧化石墨烯和硝酸銀作為反應(yīng)原料,制備石墨烯/磷酸銀。對制備的材料進行Raman、TEM、SEM、PL和XRD測試。結(jié)果表明石墨烯和磷酸銀兩種材料很好的復(fù)合在一起,復(fù)合后與磷酸銀相比,光催化性能得到明顯提升。
[Abstract]:Graphene is a kind of two-dimensional honeycomb lattice nanomaterials composed of single-layer carbon atoms. Compared with other carbon materials, graphene has larger specific surface area, higher electron mobility and better electrochemical stability. Because of its excellent properties, graphene has been widely used in the preparation of nanocomposites to improve the properties of nano-materials. In order to improve the photocatalytic performance of semiconductor materials, graphene was used to modify semiconductor based photocatalytic materials. Graphene / semiconductor nano-composite photocatalytic materials were prepared by microwave method and characterized. The main contents were as follows: (1) Graphite oxide was prepared from natural flake graphite by Hummers method. Then the graphene oxide was peeled off by ultrasonic. (2) graphene / zinc oxide was prepared by microwave method using graphene oxide and zinc nitrate as raw materials. The prepared materials were tested by TEM,SEM and XRD. The results showed that the prepared zinc oxide was single crystal structure, graphene and zinc oxide were successfully combined, and the photocatalytic properties of zinc oxide were improved. (3) graphene oxide, zinc acetate and silver nitrate were used as raw materials by microwave method. Graphene / zinc oxide / silver was prepared. The prepared materials were tested by Raman,TEM,SEM,PL and XRD. The results showed that graphene, zinc oxide and silver were well combined together. After silver was added, the ternary composites were compared with graphene / zinc oxide. The photocatalytic activity was improved obviously. (4) graphene / silver phosphate was prepared by microwave method using graphene oxide and silver nitrate as raw materials. The prepared materials were tested by Raman,TEM,SEM,PL and XRD. The results show that graphene and silver phosphate are well combined together, and the photocatalytic performance of the composite is obviously improved compared with that of silver phosphate.
【學(xué)位授予單位】：青島科技大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：O643.36;TB383.1

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本文編號：2294910