In this work, novel nanostructure reduced graphene oxide was prepared using catalytic acid spray (CAS) method in the existence of cobalt silicate nanoparticles. The structure, morphology, chemical composition, and crystalline phase of these products were systematically studied and characterized by a number of modern techniques like FTIR, transmission electron microscopy, X-ray diffraction, and Raman characterizations. The homogenous distribution of layered graphene sheets were observed from representative TEM images. XRD shows that interlayer spacing of our prepared RGO is to some extent higher than others RGO produced by other process. Hence, achieving proper designs of highly efficient, sustainable, and long-term reusable RGO is one of the environmentally crucial issues facing humanity. Here, we report the fabrication of mesoporous RGO. The mesoporous RGO exhibit high catalytic activity and fast removal of bromophenol blue dye from synthetic polluted water.