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Enhancement of hydrogen storage capacity of multi-walled carbon nanotubes with palladium doping prepared through supercritical CO2 deposition method
Date
2017-06-01
Author
Erünal, Ebru
Ulusal, Fatma
Aslan, Mustafa Yasin
Güzel, Bilgehan
Üner, Deniz
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https://hdl.handle.net/11511/87354
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Enhancement of hydrogen storage capacity of multi-walled carbon nanotubes with palladium doping prepared through supercritical CO2 deposition method
ERÜNAL, EBRU; Ulusal, Fatma; ASLAN, MUSTAFA YASİN; GÜZEL, BİLGEHAN; Üner, Deniz (Elsevier BV, 2018-06-07)
Pd doped Multi-Walled Carbon Nanotubes were prepared via supercritical carbon dioxide deposition method in order to enhance the hydrogen uptake capacity of carbon nanotubes at ambient conditions. A new bipyridyl precursor that enables reduction at moderate conditions was used during preparation of the sample. Both XRD analyses and TEM images confirmed that average Pd nanoparticle size distribution was around 10 nm. Hydrogen adsorption and desorption experiments at room temperature with very low pressures (0...
Enhancement of catalytic performance of Ni based mesoporous alumina by Co incorporation in conversion of biogas to synthesis gas
ARBAĞ, HÜSEYİN; YAŞYERLİ, SENA; YAŞYERLİ, NAİL; DOĞU, GÜLŞEN; Doğu, Timur (2016-12-05)
Mesoporous alumina with an ordered pore structure has significant advantages as a catalyst support in terms of minimization of diffusion limitations and coke formation during reforming reactions. Conversion of biogas to synthesis gas through dry reforming of methane, was investigated over Co & Ni impregnated mono- and bi-metallic mesoporous alumina catalysts with ordered pore structures. Comparison of the results obtained with mesoporous alumina catalysts containing 5% Ni and 2.5% Ni-2.5% Co proved that inc...
Enhancement of electrical conductivity of plasma polymerized fluorene-type thin film under iodine and chlorine dopants
MANSUROGLU, Dogan; Uzun Kaymak, İlker Ümit (2017-08-31)
Electrical and optical properties of plasma-polymerized fluorene-type (C13H10) iodine-and chlorine-doped thin films are investigated. Fluorene-type thin films are produced using a mixture of biphenyl (C12H10) and methane (CH4) inside a single capacitively coupled radio frequency plasma system. The dopants are mixed with the plasmadirectly as vapor during the deposition. The chemical structures of the generated functional compounds, evaluated by a Fourier transform infrared spectroscopy, exhibit a changeable...
Enhancement of performance characteristics of epoxy adhesives through particle reinforcement
Yetgin, Hasan; Yalçınkaya, Tuncay; Department of Aerospace Engineering (2019)
Epoxy adhesives are common bonding agents used to join dissimilar materials. They are widely preferred in aerospace industry. But, their lack of performance at extremities of service temperatures limits their use in practical applications. The aim of this study is to improve the epoxy adhesives’ thermal properties through addition of filler particles, i.e. boron nitride, aluminum oxide, titanium oxide and Au doped titanium oxide. The last one has been developed specifically for this study to enhance the dra...
Improvement of carbon dioxide tolerance of PEMFC electrocatalyst by using microwave irradiation technique
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The microwave irradiation technique was used to prepare platinum and platinum-ruthenium-based electrocatalysts on Vulcan for PEMFCs. The effects of microwave duration, base concentration and surfactant/precursor ratios on the properties of Pt-based catalysts were investigated. The prepared Pt-based catalysts were characterized by XRD and then PEMFC tests were performed. The particle sizes of the catalysts were ranging between 2 and 6 nm. Platinum-ruthenium-based catalysts were prepared to improve the carbon...
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E. Erünal, F. Ulusal, M. Y. Aslan, B. Güzel, and D. Üner, “Enhancement of hydrogen storage capacity of multi-walled carbon nanotubes with palladium doping prepared through supercritical CO2 deposition method,” 2017, Accessed: 00, 2021. [Online]. Available: https://hdl.handle.net/11511/87354.