Saim Özkar

E-mail

sozkar@metu.edu.tr

Department

ORCID

0000-0002-6302-1429

Scopus Author ID

201001004677

Web of Science Researcher ID

ABA-1983-2020

Advances in ruthenium nanocatalysts for hydrogen generation from hydrolysis of ammonia borane Özkar, Saim (2025-07-01) Ammonia borane is highly auspicious hydrogen storage materials releasing H2 through hydrolysis in the presence of a suitable catalyst. Ruthenium is one of the most widely used metals affording high turnover frequency for h...
Hydroxyapatite-Supported Nickel(0) Nanoparticles: A Cost-Effective and Efficient Electrocatalyst for Oxygen Evolution Reaction in Alkaline Media Demir Arabacı, Elif; Akbayrak, Serdar; Önal, Ahmet Muhtar; Özkar, Saim (2025-04-01) Water splitting for hydrogen production is a crucial technology for sustainable energy alternatives. The oxygen evolution process (OER) poses a considerable problem owing to its sluggish kinetics. This study examines the e...
Nickel ferrite platinum nanoparticles: Highly active catalyst in hydrolytic dehydrogenation of ammonia borane Akbayrak, Serdar; Özkar, Saim (2025-03-05) Magnetically separable platinum(0) nanoparticles are obtained by depositing them on the surface of magnetic nickel ferrite powder. The reduction of H2PtCl6 with sodium borohydride on the surface of nickel ferrite powder re...
Oxide coated nickel powder as support for platinum(0) nanoparticles: Magnetically separable catalysts for hydrogen generation from the hydrolysis of ammonia borane Akbayrak, Serdar; Çakmak, Gülhan; Öztürk, Tayfur; Özkar, Saim (2024-10-15) We report the development of a novel method for the preparation of magnetically separable platinum nanoparticles. Magnetic nickel nanopowder is initially synthesized in a radiofrequency plasma reactor where in-line passiva...
Giant, Submicron Size, Yet Nearly Uniform Ir0∼30,000,000 Particles: Synthesis, “Raspberry” Structure, and Resultant Insights into Their Mechanism of Formation Özkar, Saim; MacHale, Luke T.; Finke, Richard G. (2023-01-01) Synthetic conditions have been discovered that yield previously unknown massive, 0.230 ± 0.029 μm (i.e., submicron-sized), yet still near-uniform size, still near-monodisperse, ca. Ir0∼30,000,000 particles. These are the f...
Nanotitania supported ruthenium(0) nanoparticles as active catalyst for releasing hydrogen from dimethylamine borane Hammoodi Yousif Al-Areedhee, Ahmed; Karaboğa, Seda; Morkan, İzzet Amour; Özkar, Saim (2023-01-01) We reports the ex situ preparation of nanotitania supported ruthenium(0) nanoparticles (NPs) and their catalytic testing in dehydrogenation of dimethylamine borane (DMAB) in toluene solvent. Ru0/TiO2 NPs are prepared follo...
Increasing the catalytic efficiency of rhodium(0) nanoparticles in hydrolytic dehydrogenation of ammonia borane Özkar, Saim (2023-01-01) It reviews the papers reporting on the use of rhodium nanocatalysts in hydrogen generation from the hydrolysis of ammonia borane in the following groups: (i) water soluble rhodium complexes, (ii) colloidal nanoparticles of...
Reducible tungsten(VI) oxide-supported ruthenium(0) nanoparticles: highly active catalyst for hydrolytic dehydrogenation of ammonia borane Akbayrak, Serdar; Tonbul, Yalçın; Özkar, Saim (2023-01-01) Reducible WO3 powder with a mean diameter of 100 nm is used as support to stabilize ruthenium(0) nanoparticles. Ruthenium(0) nanoparticles are obtained by NaBH4 reduction of ruthenium(III) precursor on the surface of WO3 s...
Palladium nanoparticles supported on cobalt(II,III) oxide nanocatalyst: High reusability and outstanding catalytic activity in hydrolytic dehydrogenation of ammonia borane Akbayrak, Serdar; Özkar, Saim (2022-11-01) A new palladium(0) nanocatalyst is developed to enhance the catalytic efficiency of precious metal catalysts in hydrogen generation from the hydrolytic dehydrogenation of ammonia borane. Magnetically separable Pd-0/Co3O4 n...
A Review Of The Catalytic Conversion Of Glycerol To Lactic Acid İn The Presence Of Aqueous Base Akbulut, Doğan; Özkar, Saim (2022-06-01) Lactic acid is a high-value-added chemical with large production, which is used in many industries including the production of pyruvic and acrylic acids. Lactic acid is largely obtained from the oxidation of glycerol, whic...

Citation Formats