تصفح Materials Science & Technology حسب العنوان
السجلات المعروضة 16 -- 35 من 59
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Enhancing the Thermoelectric Properties of N-type Bismuth-Telluride-Based Alloys Using Graphene As A Nanofiller
(2020 , Master Thesis)Bismuth telluride chalcogenides are the ideal thermoelectric materials used for near room temperature applications. However, the usage of these materials is relegated to a few applications as a result of the extremely low ... -
Er Doped Gan/Aln Multiple Quantum Well Structure For Optoelectronic Devices
(2021 , Master Thesis)Well-defined coral reefs and patches with high density of fishes were reported in the Arabian Gulf. Due to environmental and anthropogenic disturbances, especially due to coastal development, coral reef cover starts ... -
Er Doped III-Nitride Semiconductors
(2017 , Master Thesis)Erbium ions (Er3+) doped in a solid material enables the intra 4f shell transitions from its first excited state (4I13/2) to the ground state (4I15/2). The intra-4f shell transition at 1540 nm is of exceptional interest ... -
Fabrication of Heterostructured TiO2 Nanorods for Enhanced Solar Water Splitting
(2020 , Master Thesis)As global population growth and energy demand keep to ramp up, green and sustainable energy production with environmental concerns has become as one of the most serious challenges over the past years. Photocatalysis is a ... -
Fabrication of Nano-Composite Membrane for FO Desalination
(2021 , Master Thesis)The aim of this work is to solve the current issues experienced in forward osmosis (FO) membranes such as low water flux, membrane fouling, and high reverse solute flux (RSF). We also propose a novel technique to ... -
Heat Absorbers based on Recycled Polyethylene and Paraffin Wax for Energy Storage
(2016 , Master Thesis)The building sector is one of the main sectors in Qatar; however, it consumes a huge portion of primary energy sources. Today, there is a worldwide trend to utilize renewable sources of energy to cover buildings’ energetic ... -
Impact of Prolonged Exposure to Sour Service on the Mechanical Properties and Corrosion Mechanism of Nace Carbon Steel Material Used In Wet Sour Gas Multiphase Pipeline in Qatar
(2020 , Master Thesis)Oil and Gas industries involve severe corrosive/sour environmental conditions due to H2S and CO2 and moisture content. The National Association of Corrosion Engineers, NACE, has developed standards to enable the users ... -
The Influence of Carbon Nanotubes on the Thermoelectric Properties of Bismuth Telluride
(2020 , Professional Masters Project)Thermoelectric materials are devices that have the ability to convert waste heat to electricity. The widespread use of thermoelectric materials is currently limited by the low value of their figure-of-merit (ZT). Bismuth ... -
THE INFLUENCE OF SHEAR STRESS ON NANOMATERIAL'S UPTAKE BY CANCER
(2020 , Master Thesis)Recently, nanotechnology products have been used for a variety of applications including the medical field. Two dimensional (2D) nanomaterials have attracted a growing interest due to its unique properties and ultrathin ... -
LITHIUM RECOVERY FROM LIQUID SOURCES USING A SPENT LI-ION BATTERY (SLIB) MATERIALS-BASED MEMBRANE CAPACITIVE DEIONIZATION (MCDI)
(2024 , Master Thesis)The increasing demand for lithium (Li) as a crucial raw material in various industries requires efficient recovery methods and a circular economy approach. This study investigates a fast, environmentally friendly technique ... -
MICROWAVE-ASSISTED SOL-GEL SYNTHESIS OF SODIUM-BASED LAYERED OXIDE CATHODE MATERIALS FOR HIGH-PERFORMANCE SODIUM-ION BATTERIES
(2023 , Master Thesis)Layered oxide cathode materials are of great interest in sodium-ion batteries due to their high theoretical capacity, availability, low cost, and environmentally benign raw materials. This work compares the structural, ... -
MOLECULAR LEVEL UNDERSTANDING OF NANOCLAY DISPERSION IN POLYSULFONE, POLYIMIDE, AND THEIR BLEND COMPOSITES
(2016 , Master Thesis)Polymer composites based on polysulfone (PSF) and polyimide (PI) are used as membranes for gas separation and water purification applications. However, structure composition related issues limit the performance of the used ... -
NEW FLEXIBLE POLYVINYLIDENE FLUORIDE NANOCOMPOSITES FOR FUTURE APPLICATIONS
(2017 , Master Thesis)In this work, we report novel flexible polyvinylidene fluoride (PVDF) hybrid pressure sensors with good mechanical properties. Hybrid combinations of reduced graphene oxide (rGO) with different nano metal oxides -titanium ... -
NEW SULFUR-DOPED CARBON FIBER – SUPPORTED ALLOYS FOR ELECTROCATALYTIC REDUCTION OF OXYGEN FOR PEM FUEL CELLS APPLICATIONS
(2018 , Master Thesis)The daily increase in the world needs for new sources of energy, the population and economy growth, and the industrial expansions made the demand for new sources of energy a critical request within different societies. ... -
Ni-P/TRANSITION METAL-DOPED C3N4 FOR HYDROGEN GENERATION FROM SEAWATER
(2024 , Master Thesis)A pressing demand exists for economical and exceptionally efficient electrocatalysts capable for renewable and clean energy. Nickel phosphides (NiP) and carbon nitride (CN), separately, have garnered significant attention ... -
Nip/Zno-Doped C3n4 Nanocapsules: A New Highly Corrosion-Resistant Electroless-Plated Coating with Superior Mechanical and Antibacterial Properties
(2021 , Master Thesis)Carbon nitride (C3N4) nanomaterials has superior mechanical, thermal and tribological properties, which make them attractive for various applications including corrosion resistant coatings. In this research, newly ... -
NITROGEN AND SULFUR– DOPED CARBON NANOFIBER MIXED OXIDES COMPOSITES FOR SUPERCAPACITOR APPLICATIONS
(2016 , Master Thesis)Energy storage devices including supercapacitor are among the rapidly growing field of alternatives for rechargeable batteries due to its high energy density and long life cyclability performance. Electrospinning is a ... -
NOVEL HIGHLY ANTIBACTERIAL CORROSION RESISTANT NIP-CEO2-C3N4 NANO-COMPOSITE COATINGS
(2024 , Master Thesis)Graphitic carbon nitride (g-C3N4) nano-materials are utilized as unique reinforcement in various applications due to their superior mechanical, thermal and protective properties. Moreover, recently, it has become attractive ... -
Nutrient consumption over time in plant litter decomposition in drylands: effects of different species mixtures and Photodegradation
(2021 , Professional Masters Project)Plant litter decomposition in soil is a dynamic process that is affected and regulated by several factors. Soil microbial activity, light intensity, litter composition and habitat all affect the rate of decomposition ... -
Optimization and Stabilization of P-Type BISBTE/GRAPHENE Nanocomposites for Efficient Thermoelectric Energy Conversion
(2020 , Master Thesis)The state-of-the-art Bismuth Antimony Telluride (BiSbTe) alloys have a promising potential to advance thermoelectric applications in energy harvesting for efficient power generation and active refrigeration. In this ...