부산대학교 도서관

The effects of Argon (Ar) on the Synthesis and Photocatalytic activities of monolayer Graphene under the flow of Methane (CH4) and Hydrogen (H2) gas has been studied. The Chemical Vapor Deposition (CVD) method was used to create a large area of monolayer graphene with features that meet the needs of a wide variety of applications. With this, the possibility of varying the dimensions of graphene by differing the argon gas while keeping other parameters constant was demonstrated. This helps with the ability to control the size and number of layers of graphene for different applications. Further, the photocatalytic activities of produced graphene were examined during CVD at various argon gas flow rates to observe their effects on the performances of graphene. The result shows that the synthesized graphene at Ar = 80 sccm is a monolayer with perfectly shaped edges. After exfoliation, the graphene obtained was properly formed with a large surface area, which helped achieve the results of higher photocatalytic activity.