Abstract: This study aims to observe the adsorptive performance mixture of Graphene Sand Composite (GSC) and Coconut Shell-based Activated Carbon (CSAC) at different activation temperature. Experimental results showed the optimum condition for activation temperature was 400°C with the absorbance value of 1.65A. The chemical activated carbon yield was investigated and the maximum yield percentage of the activated carbon prepared in this study was 33% at 400°C.