Browsing Hakimah Osman, Associate Prof. Dr. by Author "Hakimah, Osman"
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Enhanced photocatalytic activity of fish scale loaded TiO 2 composites under solar light irradiation
Ho, Li Ngee; Ong, Soon-An; Hakimah, Osman; Chong, Fong-Mun (Elsevier B.V., 2012-06)Fish scale (FS) loaded TiO2 composites were investigated as photocatalysts in degradation of Methyl Orange under solar light irradiation. Composites were prepared through sol-gel method by varying mass ratio of TiO2/FS at ... -
A Simple Method for the Production of Pure Crystalline Silica from Lemon Grass
Mohamed Yusof, Nur Firdaus; Hakimah, Osman; Metselaar, Hank S. C.; Rozyanty, A. Rahman (North Carolina State University, 2016)Lemon grass is an inexpensive raw material that can be used to produce natural silica. A method using hydrochloric acid (HCl) leaching followed by thermal combustion at 600 °C was developed to produce purified silica from ...