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High-pressure phase behavior of the carbon dioxide-trifluoropropylisobutyl polyhedral oligomeric silsesquioxane binary system Ertaş, Alican; Dilek Hacıhabiboğlu, Çerağ (2025-05-01) The solubility of a bifunctional polyhedral oligomeric silsesquioxane, trifluoropropylisobutyl (TFIB) POSS, in supercritical carbon dioxide (scCO2) was investigated. In the temperature and pressure ranges of 308 K to 323 K...
Mathematical modeling of response dynamics of n-type SnO2-based thick film gas sensor Atman, Berkan; Karakaş, Gürkan; Uludağ, Yusuf (2025-05-01) The sensing mechanism of semiconductor metal oxide (SMOX) gas sensors has a complex nature due to the physical and chemical phenomena involved. In this study, a comprehensive transient mathematical model was developed cons...
High-yield production of lactide isomers from depolymerization of polylactic acid in supercritical carbon dioxide Sivri, Seda; Sezgi, Naime Aslı; Dilek Hacıhabiboğlu, Çerağ (2025-03-01) Chemical depolymerization of polylactic acid (PLA) was demonstrated in supercritical carbon dioxide medium. No catalyst, organic solvent or water was employed in the reaction. The primary feedstocks used in ring opening po...
Tuning the optical and photocatalytic properties of hexagonal boron nitride through Fe and co doping: A DFT study Bouziani, M.; Bouzıanı, Asmae; Zaari, H.; Mezzat, F.; Hausler, R. (2025-03-01) Hexagonal boron nitride (h-BN), a promising two-dimensional material, is known for its wide band gap (∼6 eV) and exceptional thermal and chemical stability. However, its wide band gap limits its photocatalytic applications...
Nanoparticle concentration and solvent exchange via organic solvent ultrafiltration Ozcelik, Feyza; Çulfaz Emecen, Pınar Zeynep (2025-02-19) Downstream processing of nanoparticles after synthesis frequently involves purification, concentration and solvent exchange steps. While these are typically done via centrifugation in lab scale, ultrafiltration is a practi...
Synergistic photocatalytic degradation of methylene blue and ibuprofen using Co₃O₄-Decorated hexagonal boron nitride (hBN) composites under Sun-like irradiation Bouziani, Mariam; Bouzıanı, Asmae; Hsini, Abdelghani; Bianchi, Claudia L.; Falletta, Ermelinda; Di Michele, Alessandro; Çelik, Gökhan; Hausler, Robert (2025-02-01) In this study, we report the synthesis and photocatalytic performance of Co₃O₄-decorated hexagonal boron nitride (hBN) composites for degrading methylene blue (MB) and ibuprofen (IBF) under sunlight irradiation. Using a dr...
Open and FAIR data for nanofiltration in organic media: A unified approach Van Buggenhout, Simon; et. al. (2025-01-01) Organic solvent nanofiltration (OSN), also called solvent-resistant nanofiltration (SRNF), has emerged as a promising technology for the removal of impurities, recovery of solutes, and the regeneration of solvents in vario...
Development of stable and porous Ag2O-loaded hydroxyapatite nanocomposites for enriched photocatalytic degradation of Rhodamine B under visible light Oulguidoum, Abdeladim; Fatine, Sara; Abbadi, Meryem; Bouzıanı, Asmae; Boujamlaoui, Zakaria; Nunzi, Jean-Michel; Laghzizil, Abdelaziz (2025-01-01) A simple and inexpensive process from natural phosphate in the presence of Ag+ ions was used to develop Ag2O-loaded hydroxyapatite nanocomposites. The structural and textural characterization of the nanocomposites suggests...
Chemical upcycling of polyolefins into liquid refinery feedstock from the circularity and chemical engineering aspects Aydogdu, Arzum Ceren; Erkmen, Berrak; Suerkan, Ali; Ezdesir, Ayhan; Guliyev, Bilal; Çelik, Gökhan (2024-10-01) Three quarters of all plastics produced each year are discarded to landfill after a single use without proper waste management practices, causing a global environmental crisis: waste plastics suffocating our world at enorm...
Optically responsive dry cholesteric liquid crystal marbles Kocaman, Ceren; Batır, Özge; Büküşoğlu, Emre (2024-10-01) Dry liquid crystal marbles are structures that consist of cholesteric liquid crystal (CLC) droplets prepared by the mixture of chiral-doped thermotropic LCs encapsulated by cellulose nanocrystals (CNCs) that have been drie...
Cross-Linked Cellulose Nanocrystal Membranes with Cholesteric Assembly İçten, Berk Can; Büküşoğlu, Emre; Çulfaz Emecen, Pınar Zeynep (2024-06-25) Forming membranes by tangential flow deposition of cellulose nanocrystal (CNC) suspensions is an attractive new approach to bottom-up membrane fabrication, providing control of separation performance using shear rate and i...
Assessment of mechanical properties and morphology of polylactic acid/acrylonitrile butadiene styrene blends and their carbon fabric-reinforced composites Ozturk, Irem; Bayram, Göknur (2024-06-01) This study focuses on the development of carbon fabric-reinforced polymer composites which were prepared using polylactic acid (PLA) and acrylonitrile butadiene styrene (ABS) blends (10, 30, and 50 wt%) with different comp...
Effect of Pt nanoparticle size on resistance to chloride-induced inhibition for hydrodechlorination of trichloroethylene in water Karahan, Selin; Çelik, Gökhan (2024-04-01) Catalysts used for hydrodechlorination (HDC) of trichloroethylene (TCE) undergo partial or complete loss of catalytic activity due to inhibition by inevitable reaction product HCl. Changing the size of Pt NPs could be used...
Analysis of core velocity in the presence of solids using UDV and improved model for cloud height in stirred tanks Fırat Taşkın, Ahmet; Uludağ, Yusuf; Ayrancı Tansık, İnci (2024-03-05) Formation of cloud height is undesired due to limited mixing between clear liquid and solids rich volume; therefore, an accurate prediction of the cloud height is crucial. In this work, ultrasound Doppler velocimetry was e...
Nanoparticle-Assisted Liquid Crystal Droplet Sensors Enable Analysis of Low-Concentration Species in Aqueous Medium Sezer, Selda; Büküşoğlu, Emre (2024-02-13) We introduce nanoparticle-assisted liquid crystal (LC) droplet-based sensors that allow determination of low-level concentrations of aqueous soluble species. The silica nanoparticles functionalized with mixed monolayers co...
An empirical model for the prediction of cloud height Altıntaş, Ezgi; Ayrancı Tansık, İnci (2024-02-01) At high solids concentrations (>2 vol%), a clear interface appears between solid-rich and liquid-rich parts of a solid-liquid mixing tank. The height of this interface is known as cloud height. The cloud height is one of t...
Phytochemicals in Pancreatic Cancer Treatment: A Machine Learning Study Genc, Destina Ekingen; Ozbek, Ozlem; Oral, Burcu; Yıldırım, Ramazan; İleri Ercan, Nazar (2024-01-09) The discovery of new strategies and novel therapeutic agents is crucial to improving the current treatment methods and increasing the efficacy of cancer therapy. Phytochemicals, naturally occurring bioactive constituents d...
LaCoO3 is a promising catalyst for the dry reforming of benzene used as a surrogate of biomass tar Çağlar, Başar; Üner, Deniz (2024-01-01) Tar build-up is one of the bottlenecks of biomass gasification processes. Dry reforming of tar is an alternative solution if the oxygen chemical potential on the catalyst surface is at a sufficient level. For this purpose,...
Dissociation of HNO3 in water revisited: experiment and theory Munar, Ipek; Özer, Melike Özkan; Fusco, Edoardo; Üner, Deniz; Aviyente, Viktorya; Bühl, Michael (2024-01-01) Nitric acid dissociation in water is studied as a function of concentration, employing experimental techniques (1H NMR spectroscopy and calorimetry), quantum chemical methods (B3LYP and PBE functionals for molecular cluste...
Stimuli-Responsive Nanoplatforms: ZIF-8-Decorated Ferrocenyl Surfactant-Based Vesicles for Synergistic Therapeutic Applications Uysal, Emin; Yavas, Sabiha Gulce; KALAYCIOĞLU, GÖKÇE DİCLE; POLAT, MUSTAFA; Kalıpçılar, Halil; AYDOĞAN, NİHAL (2024-01-01) One of the most important issues in the design and preparation of drug delivery systems in the recent years is versatility which includes providing synergistic therapeutic effects and sustainability. This study uses a redo...

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