A5069700915- Advanced Photocatalysis Techniques
- TiO2 Photocatalysis and Solar Cells
- Bone Tissue Engineering Materials
- Laser-Ablation Synthesis of Nanoparticles
- Copper-based nanomaterials and applications
- Advanced Nanomaterials in Catalysis
- Carbon Nanotubes in Composites
- Facial Trauma and Fracture Management
- Graphene research and applications
- Catalytic Processes in Materials Science
- Electrospun Nanofibers in Biomedical Applications
- Supercapacitor Materials and Fabrication
- Polyoxometalates: Synthesis and Applications
- Nanoparticles: synthesis and applications
- Luminescence Properties of Advanced Materials
- Pigment Synthesis and Properties
- Building materials and conservation
- Skin Protection and Aging
- ZnO doping and properties
- Lanthanide and Transition Metal Complexes
- Polysaccharides and Plant Cell Walls
- Quantum Dots Synthesis And Properties
- Hydrogels: synthesis, properties, applications
- Gas Sensing Nanomaterials and Sensors
- Polysaccharides Composition and Applications
Babeș-Bolyai University
2014-2025
University of Szeged
2017-2023
Interface (United States)
2021
Nano- and micro-sized ZnO spheres were fabricated via a simple solvothermal synthesis using two different precursors, while diethanolamine was used to control the morphology. The applied solvent composition, precursor ratio treatment temperature mathematically correlated with diameter of spheres. crystallite size could be easily controlled by adjusting temperature, providing flexibility during synthesis. photocatalytic activity its dependence on unique morphology investigated decomposition...
In the present study, polysaccharide-based cryogels demonstrate their potential to mimic a synthetic extracellular matrix. Alginate-based cryogel composites with different gum arabic ratios were synthesized by an external ionic cross-linking protocol, and interaction between anionic polysaccharides was investigated. The structural features provided FT-IR, Raman, MAS NMR spectra analysis indicated that chelation mechanism is main process linking two biopolymers. addition, SEM investigations...
The UV-B component of sunlight damages the DNA in skin cells, which can lead to cancer and premature aging. Therefore, it is necessary use creams that also contain UV-active substances. Many sunscreens titanium dioxide due its capacity absorb wavelengths. In present study, titan was introduced alginate chitosan–alginate hydrogel composites are often involved as scaffold compositions tissue engineering applications. Alginate chitosan were chosen their important role regeneration protection....
The present study examines the effect of metamorphism on point defects in quartz. A granite sample with crystallization age ~460 Ma (Albesti granite, Romania) and its metamorphic equivalent were used for analysis. This sill-like granitoid occurs close to a ductile shear zone (locally named Bughea zone) presumed Variscan age; is exposed as relatively undeformed away from well highly strained into mylonitic fabric, when caught zone. Mineralogical differences also observed, exhibiting lower...
Point defects in quartz and their response to irradiation hold geological significance but are not well understood. They can be analyzed using methods like optically stimulated luminescence (OSL), electron spin resonance (ESR), scanning microscopy with cathodoluminescence (SEM-CL). This study examines point a granite sample (~1.4 Ga crystallization age, ~20–23 Ma cooling age) from the Catalina Metamorphic Core Complex, southwestern USA, part of Proterozoic anorogenic granitic...
Cefoperazone is a broad-spectrum antibiotic that extremely efficient in the treatment of respiratory, abdominal, or genital infections. Vibrational spectroscopic techniques, FT-IR, Raman, and SERS, along with DFT calculations, were involved investigating normal modes vibration adsorption behavior this antibiotic. Using both experimental theoretical data, bands Raman IR spectra assigned to vibrational modes. The SERS successively obtained by using silver gold colloidal nanoparticles as...
The widespread use of Ag3PO4 is not surprising when considering its higher photostability compared to other silver-based materials. present work deals with the facile precipitation method silver phosphate. effects four different phosphate sources (H3PO4, NaH2PO4, Na2HPO4, Na3PO4·12 H2O) and two initial concentrations (0.1 M 0.2 M) were investigated. As basicity influences purity Ag3PO4, products obtained. Using H3PO4 did lead formation while applying NaH2PO4 resulted in a low amount...
In the present work, influence of a gold nanoparticle’s shape was investigated on commercially available Evonik Aeroxide P25. By variation specific synthesis parameters, three differently shaped Au nanoparticles were synthetized and deposited surface chosen commercial titania. The their composites’ morphological structural details evaluated, applying different techniques such as Diffuse Reflectance Spectroscopy (DRS), X-ray Diffraction (XRD), Transmission Electron Microscopy (TEM)....
Calcium titanate (CTO) photocatalysts were synthesized using a sol-gel method by adopting cost-efficient, rapid calcination technique. The CTOs characterized X-ray diffractometry, photoelectron spectroscopy, infrared nitrogen adsorption, porosimetry measurements, scanning/transmission electron microscopy, and diffuse reflectance spectroscopy. Their photocatalytic activity was assessed through the degradation of phenol, oxalic acid, chlorophenol under UV light exposure, commercial CTO as...
The incorporation of nitrogen into carbon nanotubes (CNTs) might increase their conductivity that can further enhance excellent properties which is a very important issue nowadays. current research focused on the fabrication nanotube forests via catalytic chemical vapor deposition method and investigation surface various substrates such as aluminum, titanium silicon. Also, this study dealt with different catalyst layer techniques in order to simplify production CNT forests. Besides, more...
The carbon nanotubes (CNTs) play an important role in nanotechnology research today as they have the potential to be used several areas. Environmental protection is highly discussed nowadays, which why it necessary able produce CNT forests with less energy investment and simply, for these reasons we dip-coating layer construction method, a simple process. We also would like simplify production of by changing parameters syntheses (concentration ink, catalyst ratios, temperature, effect...
Vertically aligned carbon nanotubes (VACNTs or "CNT forest") were decorated with semiconductor particles (TiO₂ and ZnO) by atomic layer deposition (ALD). Both the structure morphology of components systematically studied using scanning (SEM) high resolution transmission electron microscopy (HRTEM), energy-dispersive X-ray spectroscopy (EDX), Raman spectroscopy, diffraction (XRD) methods. Characterization results revealed that decoration was successful in whole bulk VACNTs. The effect a...
Photocatalytic applicability of different TiO₂-based nanomaterials is a current hot topic. Therefore, our interest for the present research was to elucidate formation primary and secondary intermediates during phenol degradation by photocatalysis, in presence Au/TiO₂ nanocomposites. The composites consisted differently shaped gold nanoparticles commercial titania (Evonik Aeroxide P25). obtained noble metal nanoparticles' morphology investigated Transmission Electron Microscopy (TEM), their...
Investigations regarding AgBr-based photocatalysts came to the center of attention due their high photosensitivity. The present research focuses on systematic investigation effect different alkali metal cation radii and surfactants/capping agents applied during synthesis silver-halides. Their morpho-structural optical properties were determined via X-ray diffractometry, diffuse reflectance spectroscopy, scanning electron microscopy, infrared contact angle measurements. semiconductors'...
Orthorhombic molybdenum trioxide (α-MoO3) is well known as a photocatalyst, adsorbent, and inhibitor during methyl orange photocatalytic degradation via TiO2. Therefore, besides the latter, other active photocatalysts, such AgBr, ZnO, BiOI, Cu2O, were assessed of phenol in presence α-MoO3 using UV-A- visible-light irradiation. Even though could be used visible-light-driven our results demonstrated that its reaction medium strongly inhibits activity TiO2, while only AgBr not affected. might...
Using an ideal biomaterial to treat injured bones can accelerate the healing process and simultaneously exhibit antibacterial properties; thus protecting patient from bacterial infections. Therefore, aim of this work was synthesize composites containing silicate-based bioactive glasses different types noble metal structures (i.e., AgI pyramids, AgIAu composites, Au nanocages, nanocages with added AgI). Bioactive glass used as osteoconductive bone substitute Ag for its character, while...