Seaweed (Turbinaria ornata)-assisted green synthesis of magnesium hydroxide [Mg(OH)2] nanomaterials and their anti-mycobacterial activity

Facile synthesis of Mg(OH)2 nanomaterials using seaweed Turbinaria ornata is reported herein. X-ray powder diffraction (XRD) analysis infer that crystal structures of Mg(OH)2 nanomaterials exhibit hexagonal brucite structure with thickness and lateral dimension around 7.75 nm and 16.29 nm (measured with Scherrer equation) respectively. FE-SEM images reveal that the flakes like structure were well distributed. Those results showed that easily affordable seaweed for synthesis and stabilization of Mg(OH)2 nanomaterials in aqueous environments, and no other chemical stabilizers were needed. Anti-mycobacterial activity of Mg(OH)2 nanomaterials were carried against M. tuberculosis H37Rv by LRP assay and showed 73% RLU reduction. •Synthesis of Mg(OH)2 nanoparticles using brown seaweed Turbinaria ornata.•Magnesium hydroxide [Mg(OH)2] nanomaterials for anti-mycobacterial activity.•M. tuberculosis H37Rv by LRP assay and showed 73% RLU reduction.