Browsing by Author "Nida Nadeem"

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    The Role of Fe-BDC-DMF (MOF) as Substrate in Tuning Electrochemical Properties of Molybdenum oxide/ Fe-BDC-DMF Nanocomposites for Renewable Energy Applications
    (Library Information Services, COMSATS University Islamabad, Lahore Campus, 2023) Nida Nadeem; CUI/SP22-RPH-020/LHR; Prof. Dr. Muhammad Ashfaq Ahmad; LHR TP 8783
    In recent years, transition metal oxide (TMO) and metal organic frameworks (MOFs) have become effective options for use as electrode materials in energy storage systems. Due to its intercalation potential and effective interaction with Li ion, molybdenum oxide, a TMO material, offers interesting uses for Li-ion batteries. Unfortunately, pure Mo-oxide performs poorly in electromedicine. By creating novel composites, their electrochemical performance is improved, and MOFs are one of the most qualified options since they serve as support substrates for functional materials like metal oxides. By creating novel composites, their electrochemical performance is improved, and MOFs are one of the most qualified options since they serve as support substrates for functional materials like metal oxides. Although the shape, porosity, and specific surface areas of these kinds of composites are largely determined by the precursors chosen and the experimental setup. In this work, we have synthesized unique Molybdenum oxide/ Fe-BDC-DMF nanocomposites, and their morphology, structural spectroscopy, and electrochemical analysis are studied for optoelectronic and energy storage/conversion applications. The Raman spectra of all the samples shows the characteristic vibrational modes of α-MoO3 , β-MoO3 and MOF. We also calculate crystallite size of all composites through XRD graphs by using scherrer formula and get crystallite size of 14.57,16.93,17.48 nm and observe broader XRD peaks having high FWHM and low crystallite sizes due to disorder arrangements of crystal. We also calculate the specific capacitance, energy density and power density through CV curves through their particular formulas and we observe specific capacitance at various scan rates and composites having high scan rate show less capacitance because the porous nature of MOF is destroyed due to high scan rate. We notice the composite having greater amount of MoO3 has more specific capacitance so we can say that this composite is best for capacitor application as we get higher capacitance of 5000Fg-1 which is greater than all the capacitance that is published so far for MOF and MoO3.