Role of spheroids fibrous silica in ZnO nanoparticles via precipitation method by Puasa, Nor Aliffah, Hairom, Nur Hanis Hayati, Dzinun, Hazlini, Abu Bakar Sidik, Dilaeleyana, Sulaiman, Noralfishah, Che Jusoh, Nurfatehah Wahyuny, Abdul Jalil, Aishah