Department of Physics
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Item Synthesis and Characterization of Hybrid Nanomaterials for Energy and Environmental Applications(Library Information Services, COMSATS University Islamabad, Lahore Campus, 2024) Saba Khaliq; CIIT/FA22-RPH-023/LHR; Dr. Muhammad Ashfaq; LHR TP 9423It is a challenging task to work with composite of hybrid nanomaterials without losing their unique properties. It is a difficult task to get the composites to work together. Researchers aim to find the best ways to mix them while keeping their individual properties intact. Physical parameters like size and shape play efficient role in the synthesis of hybrid nanomaterials. Controlling the composition and structure to tailor properties for specific applications while maintaining cost-effectiveness and sustainability is also a significant concern in this field. Imagine creating tiny superhero materials at the tiniest scale possible. These superhero materials named hybrid nanomaterials made by mixing different ultra-small particles like metal nitrates, graphene oxide (GO), and reduced graphene oxide (R-GO) and synthesized by a modified hummer’s method. Characterizations like XRD, CV, and UV-visible and RMAN spectroscopy of synthesized hybrid nanomaterials was carried out to analyze their application in the fields of energy and environment. Hybrid nanomaterials based on graphene oxide and metal nanoparticles efficiently purify water by removing contaminants. These tailored materials, with their modified properties like high surface area and selective sensing capabilities, play an important role in tackling challenges related to pollution control, environmental monitoring, storage, and clean energy generation. Ongoing research aims to optimize these hybrid nanomaterials for different sustainable energy and environmental applications.Item Metal Doping Effects on the Electrochemical Performance of Metal Organic Framework(Library Information Services, COMSATS University Islamabad, Lahore Campus, 2022) Rabbia Maheen; CIIT/FA20-RPH-032 /LHR; LHR TP 7990Rapid increases in energy demand and excessive use of fossil fuels, which result in dangerous gases emissions, have resulted in major energy shortages and pollution. Scientific community is moving toward energy storage device and sensors because of its novel abilities e.g., high power densities and long-life cycle. Tremendous class of electrode materials have been introduced but their potential is very limited because of low power density. One of the key neurotransmitters in our body is dopamine. Changes in normal concentration can lead to a variety of diseases and disorders. Electrochemical investigations of dopamine using a bare electrode are not feasible because of a number of problems, including electrochemical fouling, interfering species with the same oxidation potential, and lower quantities of dopamine in biological samples. The alteration of the working electrode is required for the detection of dopamine to be rapid, precise, selective, and sensitive. Metal Organic Frameworks offer electrochemical active cites that can be a viable choice because of large surface area, tunable pore dimensions, evenly distributed food atoms, and open metal cites. A study has been designed to synthesize Metal doped Ni- MOFs by hydrothermal route. For the synthesis of Ni-MOF Cost effective Hydrothermal method was used. In this method, the precursors are diluted in water or another suitable solvent and put into a steel vessel or another suitable metal that can withstand high temperature and pressures. Using the synthesized nanocomposite, the glassy carbon electrode (GCE) surface will be modified. To enhance the electrochemical response, the electrode will be decorated with the metal doped Ni-MOF nanocomposite. We will aim, through this study, to report a high charge retention, a more efficient supercapacitor and a quicker and accurate sensor for electrochemical dopamine detection utilizing metal doped Ni-MOFs nanocomposite. The metal doped Ni-MOFs nanocomposite will be used as an anode material and MOF-derived nonporous carbon (NPC) material will be used as cathode material. Fourier transform infrared spectroscopy (FTIR) explain bands of prepared material while Raman spectra show the composition of sample. The use of electrochemical techniques like cyclic voltammetry (CV) and electrochemical impedance spectroscopy, the performance and stability of the electrode were further examined (EIS).