Department of Chemistry
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Item Amino Acid Based MOF: A Promising Green Material for Electrochemical Sensing of Heavy Metal Ions (HMIs)(Library Information Services, COMSATS University Islamabad, Lahore Campus, 2025) Hooria Aslam; CIIT/SP24-R06-008/LHR; Dr. Lubna Sherin; LHR TP 10017Heavy metal ion (HMI) contamination in freshwater resources has become a serious environmental and public health concern worldwide. Toxic metals such as lead (Pb) and mercury (Hg) can accumulate in living organisms and pose significant health risks due to their persistence and non-biodegradable nature. Therefore, the development of efficient and sensitive methods for the detection of HMIs in water is essential before its utilization for domestic, agricultural, and industrial purposes. This study presents the synthesis of an amino acid-based Metal–Organic Framework (MOF) as a green and effective material for electrochemical sensing of heavy metal ions. An energy-efficient microwave-assisted synthesis method was employed to prepare a MOF using bismuth and cobalt as central metal ions and L-tyrosine as the organic linker. L-tyrosine, a naturally occurring and biocompatible amino acid, was selected to enhance the environmental sustainability of the synthesized material. Microwave synthesis offers several advantages, including reduced reaction time, lower energy consumption, high product yield, and minimal environmental impact. The synthesized MOF exhibited excellent surface characteristics suitable for sensing applications. The incorporation of the ionic liquid BMIM BF₄ significantly improved the electrical conductivity, increased the availability of adsorption sites for heavy metal ions, and enhanced the sensing performance of the material. The developed electrochemical sensing platform demonstrated a large active surface area, efficient charge transfer capability, enhanced conductivity, and good operational stability. The structural and physicochemical properties of the synthesized composite were characterized using Fourier Transform Infrared Spectroscopy (FTIR) and X-ray Diffraction (XRD) techniques. Furthermore, the electrochemical performance of the MOF-based electrode (L-Tyr-BiCo/IL/GCE) was evaluated through cyclic voltammetry and electrochemical impedance spectroscopy. The results indicate that the developed amino acid-based MOF is a promising green material for the sensitive and reliable detection of heavy metal ions in aqueous environmentsItem Synthesis of MOF@Ppy Nanocomposite as Electrochemical Sensing Platform for Pollutant Detection(Library Information Services, COMSATS University Islamabad, Lahore Campus, 2026) Saira Nasir; CIIT/SP24-R06-026/LHR; Dr. Lubna Sherin; LHR TP 10029Since the infrastructure for the management of water quality and sanitation could not support the rising numbers due to the growing population and urbanization, especially in emerging countries, the problem associated with higher metal levels becomes an important issue in water quality in most cities that are growing very quickly. An effective way for the detection of Pb²⁺ and Hg²⁺ in water, which are hazardous to the environment and human health, becomes very important. Co-Zr-CAU-28@Ppy is a conductive nanocomposite with the structure consisting of the linker molecule ‘2,5-furan dicarboxylic acid.’ Zirconium tetrachloride and cobalt nitrate hexahydrate are the metal ions. This study employs an innovative method for the preparation of the compound through the use of microwave. The purity and quality of the compounds are checked through respective FT-IR and XRD analyses. After this, the electrochemical analysis CV test was carried out to verify the good conductivity of the composite. Chemicals are compounds that have a specific chemical structure. The number of chemicals is vast; hence chemicals can be classified based on their nature, application, and interaction with the organisms in the environment