Browsing by Author "Bozkurt, G."

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Green Hydrogen: A Clean Energy Solution for Electricity and Heat
(IGI Global, 2024) Aydın, A.Ö.; Bozkurt, G.; Daş, E.
Hydrogen (H2) is an energy carrier that offers both some of the benefits of fossil fuels and is clean with a low carbon footprint. Production of H2 from the water electrolysis using renewable energy is called green hydrogen and is the preferred pathway for future H2 production. In order to decarbonize the energy sector, green hydrogen must be adapted to existing systems using different technologies. Fuel cells, gas turbines (GTs), and combined heat and power (CHP) systems are the primary applications for hydrogen in power generation. CHP systems are highly efficient and can be employed in buildings, industrial facilities, and district energy systems to provide electrical and thermal energy. Heat pumps integrated with fuel cells are another example of energy-efficient technology. Mixing hydrogen in a specific volumetric ratio improves the resource utilization of the present natural gas heating systems. This chapter focuses on green hydrogen practices in electrical and thermal energy generation applications. © 2024, IGI Global. All rights reserved.
Preparation of Different Thin Film Catalysts by Direct Current Magnetron Sputtering for Hydrogen Generation
(TUBITAK, 2020) Bozkurt, G.; Özer, A.; Bayrakçeken, A.
In this study, thin films of Co, Ni, Pd, and Pt were prepared on Co3O4support material in pellet form using the direct current (DC) magnetron sputtering method for use as catalysts for hydrogen generation from NaBH4.Characterization of the catalysts was carried out using X-ray diffraction (XRD), scanning electronic microscopy (SEM), and X-ray photoelectron spectroscopy (XPS). According to cross-sectional SEM images, catalyst thicknesses were observed in the range of approximately 115.3-495.8 nm. The particle sizes were approximately 25.0, 21.4, 33.9, and 9.5 nm for Ni-Co3O4, Co-Co3O4, Pd-Co3O4, and Pt-Co3O4catalysts, respectively. The increase in NaOH initial concentration provides an increase in the rate of hydrogen generation for Co, Ni, and Pd catalysts. A maximum hydrogen generation rate of 1653 mL/gcat.min was obtained for the Pt-Co3O4catalyst. © 2020 TUBITAK. All rights reserved.