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Recent Submissions

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...
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...
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...
Solids dispersion in high density circulating fluidized beds Külah, Görkem; Bi, X.T.; Lim, C.J.; Grace, J.R. (2024-01-01) Transient local solid tracer concentration distributions were measured by a novel, simple and accurate measurement system with fast response to obtain axial solids dispersion in the riser of a circulating fluidized bed ope...
Effects of dead volume and inert sweep gas flow on photocatalytic hydrogen evolution over Pt/TiO2 Can Özcan, Elif; Üner, Deniz; Yildirim, Ramazan (2024-01-01) In this study, the effects of dead volume and sweep gas flow rate on photocatalytic hydrogen production over Pt/TiO2 were examined to determine their possible impact on hydrogen production rates. Five different dead volume...
Physics in deformable spacetime: Physical laws emerging from the surface minimality principle and the masses of particles Gündüz, Güngör (2024-01-01) In this work, the study was focused on how deformable spacetime gives rise to physical laws, particularly quantum and special relativity. It was shown that both the Lorentz factor and quantum mechanics can emerge from the ...
Nonoxidative dehydrogenation of propane using boron-incorporated silica-supported Pt Sites synthesized by atomic layer deposition Çelik, Gökhan (2024-01-01) Nonoxidative dehydrogenation of propane to propylene using Pt-based supported catalysts is an active research area in catalysis because catalyst attributes of Pt sites can be controlled by careful design of active sites. O...
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...
Responsive Soft Interface Liquid Crystal Microfluidics Özşahin, Ayşe Nurcan; Büküşoğlu, Emre (2024-01-01) The multifunctional responsive interfaces of liquid crystal (LC) and water are employed in fundamental research (colloidal assembly) and promising applications (sensing, release, and material synthesis). The stagnant LC sy...
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,...
PdH α-phase is associated with residual oxygen as revealed by in situ 1H NMR measurements and DFT-NMR estimations Mete, Ersen; Yılmaz, Begüm; Üner, Deniz (2023-12-30) An experimental and DFT study was conducted to investigate the chemical nature of α and β PdH phases in Pd/TiO2 through the detailed analysis of their 1H NMR chemical shifts. α-PdH states are identified with shielded 1H NM...

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