RO – Page 3 – TechConnect Briefs

TiO2-Ag Porous Nanocomposites for Advanced Photocatalytic Processes

Baia L., Baia M., Baia L., Baia M., Vasiliu F., Diamandescu L., Peter A., Cosoveanu V., Danciu V., Babes-Bolyai University, RO

The photo-assisted catalytic decomposition of organic pollutants from water and air by employing titanium dioxide as photocatalysts is a very promising method. TiO2 based aerogels are porous solid materials with high surface area, ultra-low density [...]

Photocatalytic Activity Assessment of Some Transition Metal Doped

Popa M., Baia L., Baia M., Ghica C., Cosoveanu V., Baia L., Baia M., Danciu V., Babes-Bolyai University, RO

Titania based aerogels are nanoscopic pore-solid architectures with high surface area and a continuous mesoporous network fashioned from interconnected nano-quasicrystallites building blocks that make them attractive for various (photo)catalysis based applications [1]. Besides the role [...]

Carbon Aerogel -Supported Pt with Applications in Fuel-Cells

Cotet L.C., Andronie A., Stamatin I., Stamatin I.D., Stamatin I., Stamatin I.D., Cosoveanu V., Danciu V., Babes-Bolyai University, RO

Carbon–supported Pt materials still remain as reference electrocatalysts for the reactions in fuel cells [1]. Related to cost–performances carbon aerogel-supported Pt joins the catalytic properties of the Pt with attractive structural properties of the aerogels, [...]

Zirconia Aerogel-Polyxometalate Composites Synthesis with Applications in Solid Oxide/Acid Fuell Cells

Nicoara A., Cosoveanu V., Ladiu I., Baia L., Baia M., Baia L., Baia M., Muresan L., Stamatin I., Danciu V., Babes-Bolyai University cluj-Napoca, RO

Zirconia is based material with various applications in catalysis, oxygen sensors, SOFC and electrochemical pumps. Zirconia aerogels dopped or functionalized with solid heteropolyacids extend applications to high performances materials with improved features such as: high [...]

Photocatalytic Activity Assessment of Some Transition Metal Doped

Popa M., Baia L., Baia M., Ghica C., Cosoveanu V., Baia L., Baia M., Danciu V., Babes-Bolyai University, RO

Titania based aerogels are nanoscopic pore-solid architectures with high surface area and a continuous mesoporous network fashioned from interconnected nano-quasicrystallites building blocks that make them attractive for various (photo)catalysis based applications [1]. Besides the role [...]

Nanostructured thin layers of vanadium oxides doped with cobalt, prepared by pulsed laser ablation: structure, chemistry, morphology, and magnetism

Teodorescu C.-M., Socol G., Negrila C., Luca D., Macovei D., National Institute of Materials Physics, RO

The present study deals with cobalt-doped vanadium oxide thin layers prepared by pulsed laser ablation. Variation of the preparation parameters allows one to synthesize films with a variety of properties. The chemical composition of the [...]

TiO2-Ag Porous Nanocomposites for Advanced Photocatalytic Processes

Baia L., Baia M., Baia L., Baia M., Vasiliu F., Diamandescu L., Peter A., Cosoveanu V., Danciu V., Babes-Bolyai University, RO

The photo-assisted catalytic decomposition of organic pollutants from water and air by employing titanium dioxide as photocatalysts is a very promising method. TiO2 based aerogels are porous solid materials with high surface area, ultra-low density [...]

Magnetotransport Properties and Tunnel Effect of Thin Film Nano-Structures

Neamtu J., Volmer M., Medianu R.V., National Institute for Research&Development in Electrical Engineering, RO

The investigation of magnetotransport and tunnel effect of magnetic nanostructures plays an important role in design of micro&nanosystems for spintronics. The nano-structures as FM/NM/FM/AFM were deposited by magnetron-sputtering on the oxidized Si wafers, as continuous [...]

Structural and Magneto-Optical Properties of Co-doped ZnO Thin Films Prepared by Sol-Gel Method

Neamtu J., Teodorescu C., Georgescu G., Ferré J., Malaeru T., Jitaru I., National Institute for Research&Development in Electrical Engineering, RO

Co doped ZnO thin film has promising potential for spintronic devices. Theoretical calculations predict ferromagnetism for Diluted Magnetic Semiconductors (DMS): ZnO doped with transition metals (Fe,Co,Ni). We have investigated Co (x=0.05-0.30) doped ZnO (Zn1-xCoxO), films [...]

Multifunctional Materials Based on Chitosan, Globular Protein and Gold Nanoparticles

Indrea E., Dreve S., Bratu I., Mihailescu G., Olenic L., Tomoaia G., Tomoaia-Cotisel M., Mocanu A., Horovitz O., Tomoaia-Cotisel M., Babes-Bolyai University of Cluj-Napoca, RO

Our studies are focused on the structure of thin films of chitosan and of globular protein in both the absence and the presence of negatively charged gold nanoparticles. Deacetilated chitosan of high molecular weight and [...]