“…Nanoscience and nanotechnology have made it easy for the scientist to synthesise nanomaterials of controllable sizes, while the exceptional characteristics of nanomaterials, as compared to the bulk materials, have led to intensive research in the field of nanoscience. These novel characteristics include remarkable mechanical, electrical, conductance, magnetic and optical properties (Sironmani & Daniel, 2011). These properties enable nanomaterials to have wide applications in many sectors including catalysis, drug delivery, diagnostics, transport, energy, cosmetics and the development of new drugs (Ramteke et al, 2012;Rickerby & Morrison, 2007).…”