Correlation of surface area and ID/IG ratio of coconut shell graphene carbon synthesized using Hummers method: A review

ABSTRAK

Graphene from coconut shells has been widely developed by previous studies, graphene has excellent conductivity properties that are widely applied in electronics to sensors. Coconut shells are chosen as raw materials for making graphane because of their high carbon content, and are also environmentally friendly. Characteristics can be identified by the Raman curve to determine the peak values of D and G where Peak D is the defective part of the graphene structure and Peak G is the inner part of graphene in crystalline form. This article discusses the ID/IG values synthesized from coconut shell materials. Based on the last 5 years of journals, this review discusses the surface area and ID/IG values of the 25 journals that I have read, the most widely used journal is the Hummers method, because this method is easy to understand to determine the comparative value of ID/IG, surface area, and correlation between the two parameters. The resulting nanocomposites were analyzed using Raman Spectroscopy to determine the ID/IG value and BET Analysis to measure its surface area. The results obtained showed that the ID/IG value was in the range of 0.85 to 1.15, while the measured surface area ranged from 40 to 120 m2/g. Statistical analysis shows that the Pearson correlation value between the surface area and ID/IG value is -0.028, indicating a very weak relationship and almost no linear correlation between these two variables. The p-value of 0.932 also shows that this correlation is not statistically significant. This indicates that increasing or decreasing the surface area of graphene-magnetite nanocomposites has no direct effect on the ID/IG ratio.