Department of Physics
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Item An Efficient Energy Storage Electrode from Conversion of MOFs (Metal Organic Framework) to CNTs (Carbon Nanotubes) on Green Template(Library Information Services, COMSATS University Islamabad, Lahore Campus, 2022) Sidra Zafar; CIIT/FA20-RPH-036/LHR; Dr. Muhammad Aamir Razaq; LHR TP 7993The bulk energy density of wood chips may be between 40 and 50 percent that of solid wood. If wood chips are to be reliably utilized in combustion equipment, especially small-scale and residential equipment, they must meet an appropriate quality requirement. It continues to be the most significant renewable energy source today, contributing around 6% of the world's total primary energy output. Metal-organic frameworks (MOFs) are crystalline porous organic- inorganic hybrid materials with a remarkably high interior surface area. Carbon nanotubes are cylindrical molecules made of sheets of single-layer carbon atoms that have been wrapped up (graphene).The in-situ growth of CNT’s under optimized set of conditions can be achieved by calcinations of Metal organic framework (MOF).The current synthesis will be done by hydrothermal and pyrolysis process. Deposition of MOF will be done by vacuum. The resulted Carbon nanotubes (CNTs) can be well aligned embedded with green template. MOF is converted into CNTs by using carbonization method. The composition of the sample was investigated by different characterization techniques such as Raman spectroscopy and functional group observed by Fourier transform infrared spectroscopy, while the electrochemical properties were studied by cyclic voltammetry, and electrochemical impedance spectroscopy. The Specific capacitance value is 1938.4207 Fg-1 show the enhancement of conductivity.Item Synthesis and Characterization of Selenide based Paper Electrode for Water Splitting Applications(Library Information Services, COMSATS University Islamabad, Lahore Campus, 2022) Anam Pervez; CIIT/FA20-RPH-020/LHR; Dr. Muhammad Aamir Razaq; LHR TP 7982The hydrogen evolution reaction (HER) and the oxygen evolution reaction (OER) of electrochemical water splitting play critical roles in energy conversion technology that converts renewable electricity to hydrogen fuel, and the proper catalysts are critical to efficient electrochemical water splitting. Because of their unusual layered structure, relatively narrow bandgap, unique shape, and inexpensive cost, transition metal selenides (TMSes) are potential electrocatalysts for both HER and OER. However, their electrocatalytic HER and OER properties, particularly catalytic activity and endurance at high charge densities in alkaline media, are still far from suitable for practical deployment. Although its catalytic activity has to be increased, two-dimensional MoSe2 has emerged as a promising electrocatalyst for the hydrogen evolution reaction (HER). A microwave-assisted approach was used to produce MoSe2 nano powder. Many energy-related technologies rely on the development of improved electrocatalysts to enable efficient hydrogen evolution reactions via water splitting. Although the intermediate structure of individual components in the catalysts affects water splitting efficiency, its catalytic activity needs to be increased further. RAMAN spectroscopy, UV-visible spectroscopy, linear sweep voltammetry (LSV), and cyclic voltammetry are used to investigate the structural features. The electrochemical characteristics of TMSes are discussed and organised accordingly. TMS structural engineering and composition are summarised. Finally, the challenges and prospects confronting TMSes-based electrocatalysts in advanced HER, OER, and other applications are discussed.