Malzeme Bilimi ve Teknolojileri: Recent submissions
Now showing items 1-20 of 71
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Effect of equal-channel angular pressing on ordering kinetics and twinning in an 18-carat AuCuAg alloy
(2023)The ability to modify microstructural features and the resulting properties of red gold provides an attractive potential for applications in electronics, dental devices or jewelry. In this study, the effect of severe ... -
Challenges with atomically dispersed supported metal catalysts: Controllingperformance, improving stability, and enhancing metal loading
(Elsevier, 2023)Comprehensive Inorganic Chemistry III, a ten-volume reference work, is intended to cover fundamental principles, recent discoveries, and significant applications of elements and their compounds. Authored by renowned experts ... -
Reduced graphene aerogel-supported Ir(C2H4)2 complexes at an exceptional Ir loading of 23.8 wt%: Confirming site-isolation by combining XAS and STEM
(Turkish Catalysis Society, 2023)Atomically dispersed supported metal catalysts offer significant opportunities when compared to conventional analogues. They provide maximum utilization of expensive noble metals, interesting catalytic properties, and ... -
Characterization of site-isolated iridium atoms supported on reduced graphene aerogel at an exceptional Ir loading of 23.8 wt% with synchrotron and electron microscopy techniques
(2023)Atomically dispersed supported metal catalysts provide substantial advantages when compared to their traditional counterparts. They offer 100% dispersion of expensive noble metals, exhibit intriguing catalytic properties, ... -
Active sites and their individual turnover frequencies for ethylene hydrogenation on reduced graphene aerogel
(American Chemical Society, 2024)Graphene aerogel (GA) was reduced at various temperatures to prepare a series of reduced graphene aerogels (rGAs) with different surface characteristics. Detailed characterization demonstrated that an increase in the thermal ... -
Atomically dispersed zeolite-supported rhodium complex: Selective and stable catalyst for acetylene semi-hydrogenation
(Elsevier, 2024)Supported rhodium catalysts are known to be unselective for semi-hydrogenation reactions. Here, by tuning the electronic structure of supported mononuclear rhodium sites determined by the metal nuclearity and the electron-donor ... -
Effect of repolishing on the surface roughness and color stability of air-abraded resin composites
(Original ArticleInternational Dental Research, 2022)Aim:Air powder polishing (APP) can cause roughness on composite surfaces, and consequently the color change that occurs over time affects the aesthetic negatively. Here, we aim to investigate the effect ... -
Influence of different irrigation solutions on the push-out bond strength of fiber posts to root dentin and root canal dentin microhardness: methodological study
(Türkiye Klinikleri Diş Hekimliği Bilimleri Dergisi, 2023)This study aimed to compare the effect of sodium hypochlorite (NaOCl), chlorhexidine (CHX), ethylene diamine tetra acetic acid (EDTA) and etidronic acid (HEBP) solutions and their combinations on a push-out bond strength ... -
A comparison of the effects of incremental and snowplow techniques on the mechanical properties of composite restorations
(Australian Dental Journal, 2023)Background:Glass fibre-reinforced composite (GFRC) has the potential to enhance the mechanical properties of resin-based restorations. Nevertheless, the application technique can influence the cervical margin porosity, ... -
Nanoflower hydroxyapatite's effect on the properties of resin-based dental composite
(Journal of Applied Polymer Science, 2024)To investigate the reinforcing effect of nanoflower-like hydroxyapatite (NFHA) inresin-based dental composites, we synthesized a novel NFHA using microwaveirradiation (MW), hydrothermal treatment (HT), and sonochemical ... -
SARS-CoV-2 main protease targeting potent fluorescent inhibitors : repurposing thioxanthones
(TÜBİTAK Academic Journals, 2023)The coronavirus disease, COVID-19, is the major focus of the whole world due to insufficient treatment options. It has spread all around the world and is responsible for the death of numerous human beings. The future ... -
DNA groove binder and significant cytotoxic activity on human colon cancer cells: Potential of a dimeric zinc (II) phthalocyanine derivative
(2023)The interaction of a multi-component system consisting of benzene-1,4-diyldimethanimine-bridged dimeric zinc-phthalocyanine groups (4OMPCZ) with calf thymus DNA (ct-DNA) was investigated using UV-Vis absorption, fluorescence ... -
Synthesis of one-component type II dithioxanthone-disulfide photoinitiator and investigation of photophysical and photochemical properties
(Elsevier, 2021)Herein, we report the successful synthesis of dithioxanthone-disulfide [TX-S-](2) as a new one-component type II photoinitiator. Photophysical properties of [TX-S-](2) in terms of fluorescence and phosphorescence properties ... -
In–situ formation of self-assembled Ag nanoclusters on ct-DNA in the presence of 2-mercaptothioxanthone by using UV–vis light irradiation
(Elsevier, 2018)Self-assembled silver nanoparticles (Ag NPs) on calf thymus DNA (ct-DNA) chains were synthesized in the presence of 2-mercaptothioxanthone (TX-SH) by use of UV irradiation technique. Thioxanthone itself and its derivatives ... -
Morphological, microstructural and photocatalytic characterization of undoped and Ni, Co doped Fe2O3 particles synthesized by sonochemical method
(Scientific & Technical Research Council Turkey-TUBITAK, 2022)In this study, an abundant and eco-friendly photocatalytic material, Fe2O3 particles were synthesized by sonochemical method. Morphological and microstructural investigations of synthesized undoped and Ni, Co-doped Fe2O3 ... -
Production of rare earth element oxide powders by solution combustion: a new approach for recycling of NdFeB magnets
(Royal Society of Chemistry, 2022)NdFeB magnets are employed in various technological applications due to their outstanding magnetic properties, such as high maximum energy product, high remanence and high coercivity. Production of NdFeB has gathered more ... -
Recovery of rare earth elements from spent NdFeB-magnets: separation of iron through reductive smelting of the oxidized material (second part)
(MDPI-Multidisciplinary Digital Publishing Institute, 2022)This paper proposes a pyrometallurgical recycling method for end-of-life NdFeB magnets by oxidizing them in air and subsequently smelting them. The smelting process enabled the recovery of rare earth elements (REEs), ... -
Recovery of rare earth elements through spent NdFeB magnet oxidation (first part)
(MDPI-Multidisciplinary Digital Publishing Institute, 2022)Due to their remarkable magnetic properties, such as a high maximum energy product, high remanence, and high coercivity, NdFeB magnets are used in a variety of technological applications. Because of their very limited ... -
Tension-compression asymmetry of quadruple CuCoNiBe alloys processed by high-temperature multi-pass equal channel angular pressing (ECAP)
(Walter de Gruyter, 2022)Among copper alloys, the precipitation (age) hardening quadruple CuCoNiBe alloys due to their superior mechanical properties in terms of the highest strength and elasticity achieved by peak aging have been used over the ... -
Assessment on the stable and high capacity Na-Se batteries with carbonate electrolytes
(Wiley, 2022)Factors affecting proper functioning of Na-Se system are investigated focusing on the polyselenide formation in ether- and carbonate-based electrolytes. To do so, Se cathode is prepared by ball milling with commercial ...