A5006139537- Supercapacitor Materials and Fabrication
- Quantum Dots Synthesis And Properties
- Mesoporous Materials and Catalysis
- Advanced Photocatalysis Techniques
- Chalcogenide Semiconductor Thin Films
- Advanced Sensor and Energy Harvesting Materials
- Nanocluster Synthesis and Applications
- Advanced battery technologies research
- Catalytic Processes in Materials Science
- Carbon and Quantum Dots Applications
- Liquid Crystal Research Advancements
- TiO2 Photocatalysis and Solar Cells
- Conducting polymers and applications
- Perovskite Materials and Applications
- ZnO doping and properties
- Electrocatalysts for Energy Conversion
- Surfactants and Colloidal Systems
- Luminescence and Fluorescent Materials
- Aerogels and thermal insulation
- Wound Healing and Treatments
- Advancements in Battery Materials
- Vibration Control and Rheological Fluids
- Lanthanide and Transition Metal Complexes
- Silk-based biomaterials and applications
- Electrospun Nanofibers in Biomedical Applications
Sabancı Üniversitesi
2022-2024
Koç University
2017-2019
Bilkent University
2008-2013
Carbon dots (CDs) are carbon-based fluorescent nanomaterials that of interest in different research areas due to their low cost production and toxicity. Considering unique photophysical properties, hydrophobic/amphiphilic CDs powerful alternatives metal-based quantum LED photovoltaic cell designs. On the other hand, possess a considerably high amount surface defects give rise two significant drawbacks: (1) causing decrease yield (QY), crucial drawback limits utilization LEDs, (2) affecting...
Abstract With the increasing development of intelligent robots and wearable electronics, demand for high-performance flexible energy storage devices is drastically increasing. In this study, symmetric microsupercapacitors (MSCs) that could operate in a wide working voltage window were developed by combining laser-direct-writing graphene (LG) electrodes with phosphoric acid-nonionic surfactant liquid crystal (PA-NI LC) gel electrolyte. To increase flexibility enhance conformal ability MSC to...
Abstract New synthetic strategies are needed for the assembly of porous metal titanates and chalcogenite‐titania thin films various energy applications. Here, a new approach is introduced in which two solvents surfactants used. Both necessary to accommodate desired amount salt species hydrophilic domains mesophase. The process called molten‐salt‐assisted self‐assembly (MASA) because molten phase act as solvent assemble ingredients into mesostructure they react with titania form mesoporous...
In this work, to construct a sunlight-powered energy storage system, single wall carbon nanotubes (SWCNTs)-based symmetric micro-supercapacitors (MSCs) were fabricated by one-step, facile spraying method. The electrodes exhibited satisfactory conductivity with sheet resistance of 275 Ω/sq. Moreover, potassium hydroxide-poly(vinyl alcohol) (KOH-PVA) and phosphoric acid-nonionic surfactant liquid crystal (PA-NI LC) gel electrolytes prepared applied design all-solid-state MSC devices. Compared...
Uniform and homogeneous coating of mesoporous materials with an active (catalytically, photonic, electrical) nanostructure can be very useful for a number applications. Understanding chemical reactions in confined space is important order to design new advanced materials. In this work, we demonstrate that extensive amount (as high as 53 mol percent) transition metal salts between silica walls two surfactant domains (cetyltrimethylammonium bromide, CTAB, lauryl ether, C12H25(OCH2CH2)10OH,...
Cd(II) ions can be incorporated into the channels of mesostructured titania films, using evaporation-induced self-assembly (EISA) approach, up to a record high Cd/Ti mole ratio 25%. The film samples were obtained by spin or dip coating from mixture 1-butanol, [Cd(H2O)4](NO3)2, HNO3, and Ti(OC4H9)4 then aging under 50% humidity at 30 °C (denoted as meso-xCd(II)-yTiO2). nitrate ions, nitric acid cadmium nitrate, play important roles in assembly process coordinating bidentate bridged ligands...
Although size tunable synthesis of PbS between 3 and 10 nm with emission in the NIR II region is well-known, there no well-established method to produce smaller particles below 1000 nm, which easier detect less costly more widely available Si extented PMT-detectors. Here, we demonstrate QDs sizes 2.4 3.2 using PbCl2, elemental S, dodecanethiol (DT), a toluene/oleylamine mixture at low temperatures (65–80 °C). It was shown that addition DT enhances solubility S binds crystal surface during...
Abstract Conventional wound treatment options provide a barrier against exogenous microbial penetration but cannot simultaneously an antibacterial characteristic and promote healing. However, bioactive dressings can accelerate healing have effect in addition to being able cover protect lesions. In this study, double‐layer thermoplastic polyurethane (TPU)‐gelatin fibrous that mimic the epidermis dermis layers of skin were fabricated via electrospinning technique. As agent, Hypericum...
Transition metal salt–pluronic liquid crystalline (TMS–PLC) mesophases of A–P85, B–P85 and ((1 − x)A + xB)–P85 (where A is [Cd(H2O)4](NO3)2, B [Zn(H2O)6](NO3)2 P85 a triblock copolymer, HO(CH2CH2O)26(CH2(CH3)CHO)40(CH2CH2O)26H) have been used to produce mesostructured sulfide films. The TMS–PLC (A B)–P85 are well ordered with salt/P85 mole ratio between 3.0 11.0 3D hexagonal structure. reaction the xB)-P85 H2S gas at room temperature produces CdS, ZnS Cd1−xZnxS films, respectively. initial...
Cadmium-based quantum dots (QDs) are amongst the most studied nanomaterials due to their excellent photophysical properties, which can be controlled by controlling size and/or composition of nanocrystal. However, ultraprecise control over and properties Cd-based developing user-friendly techniques synthesize amino acid-functionalized cadmium-based QDs still on-going challenges. In this study, we modified a traditional two-phase synthesis method cadmium telluride sulfide (CdTeS) QDs. CdTeS...
Abstract Mesoporous silica metal oxide (ZnO and CdO) thin films have been used as ion precursors to produce the first examples of mesoporous sulfide ( meso ‐SiO 2 @ZnS, @CdS) or selenide meso‐ SiO @ZnSe, @CdSe) films, in which pore walls are made up nanoflakes, respectively. A gentle chemical etching with a dilute HF solution @CdS (or produces cadmium ‐CdS) selenide, ‐CdSe). Surface modified ‐CdS displays bright blue photoluminescence upon excitation UV light. The oxides formed nanoislands...
Proton-conducting gel electrolytes offer significant advantages for supercapacitors. Among various acids, phosphoric acid (H3PO4·H2O, PA) has the highest proton conductivity use as a supercapacitor electrolyte. Compared with commonly used acidic and basic (H2SO4 KOH), high specific capacitance of approximately 620 F g−1 was attained PA under 0.1 A test conditions in combination reduced graphene oxide (rGO) symmetric electrode. Moreover, electrolyte further improved by confining it to liquid...
There is an urgent need to tag some valuable liquid products, such as petroleum for authentication. However, it a challenging task because of the strong autofluorescence products in visible range and chemically active harsh medium. Therefore, strongly luminescent, near-infrared (NIR) fluorophores with long-term stability are needed. The use NIR quantum dots (QDs), lead chalcogenides, seems be best approach; however, most widely used coatings do not provide enough stability, QDs quenched...
Abstract With the upcoming flourishing development of intelligent robots and wearable electronics, demands for high-performance flexible energy storage devices are increasing. In this study, symmetric micro-supercapacitors (MSCs) that could work in wide working voltage window were demonstrated by combining laser-direct-writing graphene (LG) electrodes with phosphoric acid-non-ionic surfactant liquid crystal (PA-NI LC) gel electrolyte. To increase flexibility enhance conformal ability...