Department of Physics
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Item Green Synthesis, Characterizations and Photocatalytic Activity of ZnO Nanaoparticles Mediated via Okra Extract(Library Information Services, COMSATS University Islamabad, Lahore Campus, 2020) TANZEEL IQBAL; CIIT/FA17-RPH-005/LHR; Dr. Muhammad Hammad Aziz; LHR TP 6064The progression of metal oxide nanomaterials through the green union convention has proven to be a leading tool in the application of nanotechnology especially as it is being used for drugs, biosensors, pharmaceuticals and water treatment. Nowadays, green chemical awareness has been observed in cell thinking, biosensors and drug delivery, the manufacture of Nano devices and the elimination of wastewater pollution. The synthesis of nanomaterials in raw form is unstable, unique biocompatibility, low cost and environmentally friendly. The aim of my research project is to find photocatalytic activity test technology with in-depth research into ZnO nanoparticles experiments linked to okra extract. Green synthesis ZnO will dramatically clarify the nanotechnology method using advanced technological instruments, for example, X-beam Diffraction (XRD), Field Emission Scanning Electron Microscope (SEM) and a visible UV spectrometer. This blue-green compound of ZnO nanoparticles will show the degradation of blue dye (MB) before sun exposure.Item Preparation of GO-ZnO Nanocomposite and its Antibacterial Activity(Library Information Services, COMSATS University Islamabad, Lahore Campus, 2019) HINA IRUM AMIN; CIIT/FA17-RPH-057/LHR; Dr. Muhammad Hammad Aziz; LHR TP 5780The progression of nanomaterials demonstrated prevailing apparatuses for nanotechnological sales in various kinds of application like electronics, drug deliver carriers, biosensors and nanomedicine. By and large, nanoparticles appear to be a double-edged sword as they have both valuable and unsafe impacts, depending upon the circumstance of applications. Graphene and its family derivatives like graphene oxide (GO) is the allotrope of carbon and reduced graphene oxide (RGO) also allotrope form of carbon attract in the entire world because of its outstanding physiochemical properties, for example, huge surface area to volume proportion, magnificent charge transportation, great quality and low electrical noise. Graphene based nanomaterial and its composites for example GO-ZnO in a biological point of view require an detailed origination with outstanding antibacterial properties with decline toxicity quality and morphological evaluations of these materials is as yet appealing test for future interest. Here, in this experimental work, we have synthesized and characterized GO-ZnO by X-ray diffraction (XRD), Uv-Vis spectroscopy, Field emission scanning electron microscopy FESEM, for morphological and essential study. Toxicity of GO-ZnO nanocomposite was surveyed by means of methyl-thiazole-tetrazolium (MTT) measure, and morphological changes realize GO-ZnO in Escherichia coli (E.coli) investigated by confocal checking electron microscopy with magnification of ×40. The toxicity of GO-ZnO nanoparticle was assessed by estimating the degree of misfortune in cell viability (%) in dose dependent which caused the cell destruction in apoptotic/necrotic way. The reason of bacterial death due oxidative pressure trigger by reactive oxygen species (ROS) expressed potential role of GO-ZnO for enhancement of antimicrobial activity of E coli as an effective antibacterial specialist