Anita Ramli - Academia.edu (original) (raw)

Anita Ramli

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Papers by Anita Ramli

The Malaysian Journal of Analytical Sciences, 2015

Journal of physics, Nov 1, 2018

Malaysian journal of science, Dec 26, 2002

Journal of physics, Nov 1, 2018

Research Square (Research Square), Jun 6, 2023

Applied Catalysis A-general, Aug 1, 2022

Malaysian Journal of Microscopy, Dec 31, 2012

International Journal of Environmental and Ecological Engineering, Dec 23, 2011

Renewable Energy, Oct 1, 2022

Journal of Chemical & Engineering Data, Dec 5, 2011

A series of γ-Al2O3–MgO and γ-Al2O3–CeO2 composite oxides with different respective MgO and CeO2 ... more A series of γ-Al2O3–MgO and γ-Al2O3–CeO2 composite oxides with different respective MgO and CeO2 loadings were prepared successfully via wet impregnation method. The synthesized composite oxides were characterized by X-ray diffraction (XRD), field emission scanning electron microscopy–energy dispersive X-ray analysis (FESEM-EDAX), thermogravimeric analysis (TGA), X-ray photoelectron spectroscopy (XPS), X-ray fluorescence (XRF) and Brunauer–Emmett–Teller (BET) methods. The point of zero charge (PZC) of oxides/mixed oxides was determined by salt addition and potentiometric methods to explore the effects of MgO and CeO2 contents on the PZC of γ-Al2O3. The results showed that, as the MgO loading was increased, PZC of alumina also increased linearly. However, in the case of CeO2 addition, the change in PZC of γ-Al2O3 was not so significant. Moreover, the PZC of these synthesized composite oxides varied between the PZCs of pure oxides of Al2O3, MgO, and CeO2. Further, it was noted that, at lower MgO and CeO2 lo...