Synthesis of Graphene Oxide-intercalated Bentonite Composites And its Application for removal of Methylene Blue Dyes
Muhammad Said, David Fernando, Della Silvia, Suheryanto, Elisa Nurnawati, Bayu Mahdi Kartika

Universitas Sriwijaya

Abstract

Research has been conducted on synthesizing bentonite/GO composites for application to reduce methylene blue dye by adsorption method. GO synthesis uses a modified hummer method to avoid the use of toxic compounds. In characterization using XRD, GO is obtained with peaks at an angle of 10.57and in bentonite there are several peaks, namely 22.10, 28.1 , 35.63. For bentonite/GO composites the best is found at a ratio of 1:3 with a peak at 25.61. In characterization using SEM EDX, the morphology of bentonite/GO is seen where in the pores of bentonite there is GO that fills the gap in bentonite which has a porous structure. Based on the EDX results on the GO bentonite composite, there was also a very large increase in carbon atoms. The removal of methylene blue dye has been successfully proven with the best adsorption capacity found at a contact time of 60 minutes with a percentage of 89,83% and Qe value of 9.5 mg/g and the maximum concentration of this composite can adsorp at a concentration of 35 mg / L with a percentage of 97,83 and Qe value of 10.272 mg/g.

Keywords: Bentonie, Graphene Oxide, Adsorption, Methylene Blue

Topic: Chemistry and Applied Chemistry