Open Access Conference Proceedings

Abstract: Titanium catalysts are important materials for many types of oxidation reactions. Conventionally prepared microporous titanosilicate, namely TS-1, is well-known catalyst used in oxidation reaction with hydrogen peroxide. [..] Read more

Abstract: The recognition of heterocyclic amines and their possible capture from polluted waters by porphyrins represents an ecological challenge. A novel metalloporphyrin bearing a pyridine functional group, Zn (II)-4-pyridyl-tris-(4-phenoxyphenyl) porphyrin (Zn-PyPPP), with high steric hindrance, whose base ligand was synthesized and characterized in our group, was used for a comparative study in order to investigate how the substituent –CH3 group of 1-methyilimidazole would influence the access of the free nitrogen atom to the Zinc atom of the porphyrin, in comparison to pyridine, despite the fact that the whole molecule is smaller than the six-membered cyclic compound. [..] Read more

Abstract: Gas and migration barrier coatings which are flexible and transparent can be generated on polymer films by combining Combustion Chemical Vapor Deposition (CCVD) and Sol-Gel Technology.The CCVD (especially the Pyrosil® method) allows the formation of highly compact oxide layers based on siloxanes under atmospheric pressure. In order to make them more flexible and to reduce the permeability, the use of the Sol-Gel technique is suitable. [..] Read more

Abstract: Perovskite-type compounds are an important class of materials and there are extensively studied in high-temperature catalytic processes. Dry (carbon dioxide) reforming of methane (DRM) to synthesis gas is one of the most important reactions using such materials as catalysts. [..] Read more

Abstract: The article deals with an experiment that was carried out on a test spinning device designed for the production of nanofibres by electrostatic spinning from a string. In the experiment, a spinning device was created in the form of a vertical stringed moving electrode. [..] Read more

Abstract: The paper deals with the analysis of the equipment for electrospinning from the free layer using wire spinneret. Simulations of the electrostatic field were performed by using the finite element method. [..] Read more

Abstract: Kaolin/ZnO nanocomposites were prepared by heat-induced (100 – 600 °C) decomposition of sodium zinc carbonate clusters synthesized from zinc chloride and sodium carbonate in water suspension of kaolinite-rich kaolin KKAF. X-ray diffraction analysis revealed that highly crystalline ZnO nanoparticles (NPs) are obtained in nanocomposite at a temperature above 400 °C. [..] Read more

Abstract: The aim of the present work was the preparation of photoactive composites of g-C3N4/MMT type. In this work, g-C3N4/MMT photocatalysts were prepared by thermal polycondensation of the mechanical mixture of melamine and MMT at different temperatures (450, 550, 600, 620, 650, and 700°C). [..] Read more

Abstract: ZnTa2O6 and ZnV2O6 nanomaterials were obtained by hydrothermal and co-precipitation synthesis methods. Optical measurements (UV-VIS) were realized for ZnTa2O6 and ZnV2O6 nanomaterials. [..] Read more

Abstract: Hydrothermally obtained Mg3Ta208 pseudo-binary nanomaterial from MgO and Ta2O5 (3:1) precursors was deposited using the pulsed laser deposition (PLD) technique on carbon steel disks. The PLD main processes parameters, i.e. [..] Read more

Abstract: This paper presents some results of the study regarding the corrosion inhibition properties evaluated in HCl environment of drop casting deposited layers on steel, using ZnV2O6 oxide (obtained by hydrothermal and co-precipitation methods) and two Zn–metalloporphyrins, namely: Zn–5-pyridyl-10,15,20-tris(3,4-dimethoxyphenyl)-porphyrin (ZnPyDiMeOPP) and Zn-5(3OH-phenyl)-10,15, 20-tris-(3,4-dimethoxyphenyl)-porphyrin (Zn3OHtris34DiMeOPP).The open circuit potential measurement and potentiodynamic polarization electrochemical technique with Tafel representation were used to investigate the corrosion protection of mixed sandwich deposited layers.The performed tests revealed that the best corrosion resistance was obtained in the case of the steel coated with hydrothermally obtained ZnV2O6 oxide as first layer and Zn–5-pyridyl-10,15,20-tris(3,4-dimethoxyphenyl)-porphyrin (ZnPyDiMeOPP) as the second layer, i. e. [..] Read more

Abstract: Wooden buildings are a traditional type of construction that has been gradually replaced by brick and monolithic technologies. The current trends lead up to use renewable materials even include different types of thermal insulations. [..] Read more

Abstract: With the development of chemical vapour deposition techniques, and thanks to its chemical and electrical properties, boron-doped nanocrystalline diamond has attracted the interest of electrochemists for various applications from chemical sensing to water treatment. Potential applications, such as super capacitors and dye sensitized solar cells, would greatly benefit from an increase in specific surface area. [..] Read more

Abstract: Nowadays 'green' synthesis of gold nanoparticles (Au NPs), utilizing organic compounds as a reducing and stabilizing agents (e.g. plant extracts, biodegradable polymers), is gaining considerable attention. [..] Read more

Abstract: In this work, we present new preparation method, photocatalytic activity and photocatalytic reactivation of photoactive layered graphitic carbon nitride (g-C3N4), which was incorporated into silica structure containing zinc-silicate nanoparticles (ZnO-m·SiO2). Prepared material exhibits more than ten times larger specific surface area than pure bulk g-C3N4. [..] Read more

Abstract: Optical fiber based sensors are well established as superior to other (especially the electrically conductive) types of sensors within the same applications due to their: light weight, flexibility, sensitivity, large surface area, potential for multi-functionality and multiplexing, immunity to interference with electromagnetic fields, resilience to harsh environmental conditions as well as their safe and hazard-free use during biological interaction. Also, as the lightwaves can cross over cavities and gaps, there is no essential need for continuity in the structure; as it is required in electrically conductive materials. [..] Read more

Abstract: Composite nanofiber materials offer advanced properties and functions applicable in many fields, especially in medicine. Nowadays, these materials are mainly fabricated using the DC electrospinning technology with multi-spinnerets electrodes designed for such purpose. [..] Read more

Abstract: Plasma polymerisation in atmospheric pressure is an emerging method of creating highly hydrophilic surfaces, with water contact angles below 10 °. Unlike low-pressure plasma polymerisation, it is cheaper, faster and can be done inline, but requires larger amounts of precursor. [..] Read more

Abstract: In this work, activated carbon (AC) web was prepared by using waste acrylic fibers followed by physical activation under the layer of charcoal in high temperature furnace. The carbonization of acrylic fibrous waste was performed at different temperature (800, 1000 and 1200 ◦C) with heating rate of 300 ◦Chr-1 and at different holding time. [..] Read more

Abstract: The developing nanotechnology is getting increased attention through wide range of industries. A variety of nanofibers (mostly polymer-based) can be made for applications in many research and industrial branches as well as civil engineering. One of our aims is to find out more about application of nanofibers in civil engineering. [..] Read more