Pusat Pengajian Sains Kimia - Tesis

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    Mordenite Zeolites Synthesized From Bamboo Leaves Ash For Acetylation Of Glycerol With Benzaldehyde
    (2025-08)
    Gong, Jiangtian
    Bamboo leaves ash (BLA) is a cheap and sustainable silica source but under-utilized in industry. Annually, over 20 million tons of bamboo are harvested worldwide, generating about 200,000 tons of leaves waste often disposed of by open burning. Valorizing this waste hence offers an eco-friendly solution to environmental problems. In this work, mordenite and hierarchical mordenite zeolites synthesized from BLA are reported. By carefully studying crystallization conditions, mordenites with three distinct morphologies (nanostick, intergrown bulky ball, nanorod) are successfully synthesized. The mordenite with nanorod shape contains hierarchical micro/mesoporosity, and is the bestcatalyst (80.22.4% conversion, 54.40.3% dioxolane selectivity) among mordenite catalysts prepared in acetalization of benzaldehyde and glycerol.
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    Study Of Calcium Alginate-Silica Composite Beads In Transesterification Of Bleached Oil: Catalyst Modification, Optimization And Conversion To Renewable Hydrocarbon
    (2025-08)
    Ab Halim, Ainnur Rusydina
    Spent bleaching earth (SBE), a solid waste generated by vegetable oil refining industries, poses significant environmental and disposal challenges due to its high oil content. This study explores the valorization of SBE as both a catalyst support and a feedstock for biodiesel production, offering a sustainable waste management solution. A novel alginate–SBE composite catalyst was synthesized via a simple impregnation method under optimal conditions, using a 1:4 ratio of sodium alginate to SBE/KOH (25%, 30% & 35%), followed by calcination at 600 °C.
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    Design, Synthesis, In Silico And In Vitro Evaluations Of New Inhibitors Targeting Human Hypoxia Inducible Factor (Hif) Prolyl Hydroxylase Domain (Phd) Enzymes
    (2025-09)
    Mohammad, Sayaf Abrar
    Hypoxia inducible factor (HIF) prolyl hydroxylase domain (PHD) enzymes play a pivotal role in oxygen sensing and regulation, making them key therapeutic targets for hypoxia-related diseases, including cardiovascular diseases (CVDs), chronic kidney disease (CKD), and anemia. However, current PHD inhibitors suffer from significant limitations, including toxicity, thromboembolic risks, and poor selectivity, necessitating the discovery of safer and more effective alternatives. This research utilises a computational-experimental methodology to discover new PHD inhibitors through the integration of molecular docking, molecular dynamics (MD) simulations, and free energy calculations, QSAR modeling, and experimental validation.
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    Ferrite-Based Oxides: Preparation, Characterization And Carbon Dioxide Adsorption Study
    (2025-09)
    Sulaiman, Nur Izzana
    In response to the growing demand for effective carbon capture technologies, this study investigates the synthesis and characterization of ferrite–based oxides solid adsorbents prepared using a facile sol-gel method. The primary aim is to enhance the adsorption capacity, reusability and structural properties of the adsorbent. Besides, ternary and quaternary ferrite–based oxides have seen limited exploration in the field of carbon capture, largely due to the prevalence of studies focusing on simpler single metal oxides. These complex multi-metal systems offer the potential for enhanced CO2 adsorption properties yet remain underutilized. In this study, inverse spinel ferrite along with M-type and W-type hexaferrite adsorbents, were successfully synthesized using low-cost, facile and efficient method.
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    Development Of Polyvinyl Alcohol/ Microcrystalline Cellulose/ Anthocyanin Biofilm As Ph-Sensitive Indicator For Smart Packaging
    (2025-09)
    Mohd Nor Azam, Nur Adriana
    Recent studies have highlighted the negative environmental effects of petroleum-based plastics, emphasizing the increasing demand for biodegradable and smart food packaging materials. A sustainable and pH-sensitive food packaging film based on polyvinyl alcohol (PVA, 8%), microcrystalline cellulose (MCC, 2%), and anthocyanin (9% w/w) was developed using a solvent casting method in this study.