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Search results for: N-DOPED TIO2
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Impact of TiO2 Nanostructures on Dye-Sensitized Solar Cells Performance
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Photocatalytic Decomposition of Acetaldehyde on Different TiO2-Based Materials: A Review
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Hydrogen evolution on the reduced TiO2 under simulated solar lamp
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TiO2-Nitrogen Modified for Water Decolourisation under VIS Radiation
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TiO2-anatase modified by carbon as the photocatalyst under visible light
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Photocatalytic activity and OH radical formation on TiO2 in the relation to crystallinity
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TiO2 Nanoparticles with High Photocatalytic Activity Under Visible Light
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Preparation and characterization of TiO2/carbon nanowall composite on a transparent substrate
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Paving the Way for A Sustainable and Efficient SiO2/TiO2 Photocatalytic Composite
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Solar Photocatalytic Degradation of Sulfamethoxazole by TiO2 Modified with Noble Metals
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TiO2-based photocatalysts in indoor swimming pool air purification
PublicationWzrastająca ilość basenów kąpielowych i aquaparków jest obecnie wyzwaniem dla naukowców zajmujących się badaniem i kontrolowaniem powietrza hali basenowej. Mikroorganizmy powstałe w powietrzu hali stanowią ogromne zagrożenie dla zdrowia. Ponadto, w fazie gazowej obecne są także uboczne produkty dezynfekcji (DBP), które mogą mieć szkodliwy wpływ zarówno na kąpiących się, jak i personel. W pracy omówiono potencjalne zagrożenia spowodowane...
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Wpływ środowiska spawania na własności złączy próbnych Tekken ze stali S355J2C+N
PublicationIstnieją trzy metody spawania pod wodą, sucha, mokra oraz pośrednia między nimi, wykorzystująca lokalną komorę suchą. Ze względu na niskie koszty najszerzej rozpowszechnioną jest metoda mokra z wykorzystaniem elektrod otulonych. Woda jako środowisko spawania znacznie utrudnia przeprowadzenie procesu, którego realizacja niesie ze sobą wiele problemów. Pierwszym z nich jest zła widoczność po-wstającego złącza oraz niestabilność...
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Investigation of thin perovskite layers between cathode and doped ceria used as buffer layer in solid oxide fuel cells
PublicationIn this paper, thin perovskite layers between cathode material of solid oxide fuel cells and gadolinia-doped ceria buffer layer are investigated. Thin layers made of LaNi0.6Fe0.4O3-δ (LNF), La0.6Sr0.4Co0.2Fe0.8O3-δ (LSCF), or SrTi0.65Fe0.35O3-δ (STF) were symmetrically deposited by spin coating method from metallo-organic polymer precursors on a Ce0.8Gd0.2O2-δ (CGO) substrate. Porous and about 40-μm-thick LNF cathodes were deposited...
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Electrophoretic co-deposition of Fe2O3 and Mn1,5Co1,5O4: Processing and oxidation performance of Fe-doped Mn-Co coatings for solid oxide cell interconnects
PublicationThe “in-situ” Fe-doping of the manganese cobalt spinel was achieved by electrophoretic co-deposition of Mn1,5Co1,5O4 and Fe2O3 powders followed by a two-step reactive sintering treatment. The effects on the coating properties of two different Fe-doping levels (5 and 10 wt.% respectively) and two different temperatures of the reducing treatment (900 and 1000 °C) are discussed. Samples with Fe-doped coatings demonstrated a lower...
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The scanning electron microscopy (SEM) studies of heavy boron-doped diamond oxidation under high-temperature
Open Research DataThe dataset contains the results of scanning electron microscopy (SEM) images of heavy boron-doped diamond (BDD) electrodes subjected to high-temperature oxidation in a furnace at 600 Celsius. The micrographs reveal the material decomposition of BDD grains due to high temperature.
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Modeling external carbon addition in combined N-P activated sludge systems with an extension of the IWA Activated Sludge Models
PublicationThe aim of this study was to expand the IWA Activated Sludge Model No. 2d (ASM2d) to account for a newly defined readily biodegradable substrate that can be consumed by polyphosphate accumulating organisms (PAOs) under anoxic and aerobic conditions, but not under anaerobic conditions. The model change was to add a new substrate component and process terms for its use by PAOs and other heterotrophic bacteria under anoxic and aerobic...
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Modeling external carbon addition in combined N-P activated sludge systems with an extension of the IWA Activated Sludge Models
PublicationThe aim of this study was to expand the IWA Activated Sludge Model No. 2d (ASM2d) to account for a newly defined readily biodegradable substrate that can be consumed by polyphosphate accumulating organisms (PAOs) under anoxic and aerobic conditions, but not under anaerobic conditions. The model change was to add a new substrate component and process terms for its use by PAOs and other heterotrophic bacteria under anoxic and aerobic...
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Synthesis and transport studies of model dipeptides with modified n-terminal amino groups into e. coli k12 mutant strains
Publicationotrzymano na drodze syntezy chemicznej kilka modelowych dipeptydów zawierających n-terminalna guanidynę oraz betainę. zbadano transport tych peptydów do komorek e. coli k12, posiadających zróżnicowane systemy transportowe. wyniki badań potwierdziły brak transportu do komórek bakteryjnych z wykorzystaniem permeaz peptydowych. dodatnio naładowana i silnie polarna grupa aminowa uniemożliwia efektywny transport tych związków do komórek...
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New LED photoreactor with modulated UV–vis light source for efficient degradation of toluene over WO3/TiO2 photocatalyst
PublicationThe efficiencies of prepared WO3/TiO2 photocatalysts with varying amounts of WO3 were evaluated for gas-phase photocatalytic degradation of toluene. The obtained results revealed that the best photocatalytic properties were characteristic for samples calcined at 500ºC, which can be associated with high crystalline phase content (> 97%) and favourable BET surface area. The photocatalytic degradation tests were performed in two photoreactors...
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Tuning the Laser-Induced Processing of 3D Porous Graphenic Nanostructures by Boron-Doped Diamond Particles for Flexible Microsupercapacitors
PublicationCarbon (sp3)-on-carbon (sp2) materials have the potential to revolutionize fields such as energy storage and microelectronics. However, the rational engineering and printing of carbon-on-carbon materials on flexible substrates remains a challenge in wearable electronics technology. This study demon-strates the scalable fabrication of flexible laser-induced graphene (LIG)-boron doped diamond nanowall (BDNW) hybrid nanostructures...
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Spontaneous generation of chirality and chiroptical spectra of N-nitroso-2,4-diaryl-3-azabicyclo[3.3.1]nonanes
PublicationBadane związki o szkielecie 2,4-diarylo-3-azabicyclo[3.3.1]nonanów krystalizują w chiralnej grupie przestrzennej jako konglomeraty, co oznacza że uzyskane, makroskopowej wielkości kryształy można rozdzielić manualnie na dwie grupy zgodnie z asymetrią ich powierzchni. Homochiralne kryształy wybranych enancjomerów zsyntetyzowanych związków poddano badaniom rentgenostrukturalnym oraz zarejestrowano ich widma CD i UV-vis. Konfigurację...
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Measurements of OF QoS/QoE parameters for media streaming in a PMIPv6 TESTBED WITH 802.11 b/g/n WLANs
PublicationA growing number of mobile devices and the increasing popularity of multimedia services result in a new challenge of providing mobility in access networks. The paper describes experimental research on media (audio and video) streaming in a mobile IEEE 802.11 b/g/n environment realizing network-based mobility. It is an approach to mobility that requires little or no modification of the mobile terminal. Assessment of relevant parameters...
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Synthesis and structure of selected quaternary N-(1,4-anhydro-5-deoxy-2,3-O-isopropylidene-D,L-ribitol-5-yl)ammonium salts.
PublicationOpracowano metody otrzymywania czwartorzędowych soli amoniowych, pochodnych rybitolu, zawierających reszty: pirydyny, 2-metylopirydyny, 3-karbamoilopirydyny, 4-(N,N-dimetyloamino)pirydyny, chinoliny oraz dwóch amin alifatycznych trimetyloaminy i trietyloaminy. Związki te powstają w reakcji 1,4-anhydro-2,3-O-izopropylideno-5-O-tozylo-D,L-rybitolu z odpowiednimi zasadami azotowymi.
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Chemical and structural studies of screen-printed carbon electrodes (SPCE) with boron-doped diamond foils
Open Research DataThis dataset contains chemical analyses and structural studies by XPS and Raman spectroscopy, carried out for SPCE containing boron-doped diamond BDD foils done with scanning electron microscope. Different points for XPS analysis mark different electrode spots: A) working electrode, B) reference electrode, C) counter electrode, D) pads.
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Wpływ starzenia termicznego na właściwości elektryczne cienkich warstw TiO2:Nb oraz TiO2:(Co, Pd), jako materiału na półprzewodnikowe czujniki gazu.
PublicationZaobserwowany w ostatnich latach dynamiczny rozwój nowej dziedziny nauki, jaką jest transparentna elektronika, spowodował zintensyfikowanie badań, mających na celu odkrycie i charakteryzację nowych materiałów, w szczególności opartych na tlenkach metali. Współcześnie tlenki zaczęły niekiedy wypierać typowe materiały półprzewodnikowe. Szczególnie interesująca wydaje się perspektywa wykorzystania tlenków metali w czujnikach jako...
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Efficient removal of 2,4,6-trinitrotoluene (TNT) from industrial/military wastewater using anodic oxidation on boron-doped diamond electrodes
PublicationWith growing public concern about water quality particular focus should be placed on organic micropollutants, which are harmful to the environment and people. Hence, the objective of this research is to enhance the security and resilience of water resources by developing an efficient system for reclaiming industrial/military wastewater and protecting recipients from the toxic and cancerogenic explosive compound – 2,4,6-trinitrotoluene...
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Formation of high-carbon abrasion-resistant surface layers when high-energy heating by high-frequency currents
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Study on surface termination of boron-doped diamond electrodes under anodic polarization in H2SO4 by means of dynamic impedance technique
PublicationAnodic oxidation is a popular way to modify termination bonds at boron doped diamond electrodes altering their electrochemical and physicochemical properties. Our studies, performed with dynamic electrochemical impedance spectroscopy technique, supported with X-ray photoelectron spectroscopy and ellipsometry analysis prove its utility in continuous on-line monitoring of impedance changes on the electrode surface under polarization...
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N,N’-Bis(salicylidene)ethylenediamine (Salen) as an Active Compound for the Recovery of Ni(II), Cu(II), and Zn(II) Ions from Aqueous Solutions
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Pozorne objętości molowe oraz ściśliwości adiabatyczne nadchloranów i chlorków metali szeregu Mn(II) - Zn(II) w N,N-dimetyloacetamidzie
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Synthesis of some quaternary N-(1,4-anhydro-5-deoxy-D,L-ribitol-5-yl)ammonium salts
PublicationOpisano matodę pomyślnego usuwania izopropylidenowych grup ochronnych z 1,4-anhydro-2,3-O-izopropylideno-5-O-tozylo-D,L-rybitolu i czwartorzędowych soli N-(1,4-anhydro-5-deoksy-D,L-rybitolo-5-yl)amoniowych. Struktury otrzymanych związków zostały określone przy pomocy analizy spektralnej, w tym 2D NMR. Otrzymano także dane dyfrakcyjne dla monokryształów 1,4-anhydro-5-O-tozylo-D,L-rybitolu i jego pochodnych 2,3-O-izopropylidenowych.
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Systemy zarządzania bezpieczeństwem i higieną pracy według PN-N-18001:2004 na przykładzie stoczni jachtowej w Gdańsku
PublicationW artykule opisano model zarządzania bezpieczeństwem pracy w stoczni jachtowej, który został opracowany na potrzeby skuteczniejszego zarządzania bezpieczeństwem pracy w stoczni na podstawie Polskiej Normy PN-N-18001: „Systemy zarządzania bezpieczeństwem i higieną pracy. Wymagania".
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Electrochemical Stability of Few-Layered Phosphorene Flakes on Boron-Doped Diamond: A Wide Potential Range of Studies in Aqueous Solutions
PublicationTwo-dimensional phosphorene has attracted great interest since its discovery as a result of its extraordinary properties. Two-dimensional single crystals of phosphorene can be useful for electrochemical (EC) sensing applications due to their enhanced surface-to-volume ratio. We proposed to investigate the electrochemical performance of phosphorene deposited directly on boron-doped diamond (BDD) electrodes. Noncovalent interaction...
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Enhanced electrochemical kinetics of highly-oriented (111)-textured boron-doped diamond electrodes induced by deuterium plasma chemistry
PublicationNovel highly-oriented (111)-textured boron-doped diamond electrodes (BDDD) featuring high electrochemical activity and electrode stability toward electrochemical analytics were fabricated by deuterium-rich microwave plasma CVD. The high flux deuterium plasma-induced preferential formation of (111)-faceted diamond as revealed by XRD. The highly-oriented diamond surface exhibited improved boron dopant incorporation and activation,...
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Necessary conditions for optimal control of general N-D model
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DT-diaphorase catalyzes N-denitration and redox cycling of tetryl
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Kinetics and mechanism of the dehydrohalogenation of Ar2CHCX3 and Ar2CHCHX2 by strong N-bases
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15 N NMR and FTIR studies of 2,4-dinitroanilines and their salts
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GBTX Emulation for BM@N/MPD Data Acquisition Systems
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(CA)n Microsatellite polymorphism of ERBB-1 in breast cancer
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Improvement of Imperfect String Matching Based on Asymetric n-Grams
PublicationTypical approaches to string comparing treats them as either different or identical without taking into account the possibility of misspelling of the word. In this article we present an approach we used for improvement of imperfect string matching that allows one to reconstruct potential string distortions. The proposed method increases the quality of imperfect string matching, allowing the lookup of misspelled words without significant...
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Mainstream shortcut N removal modeling current status and perspectives
PublicationThis work gives an overview of the state-of-the-art in modelling of short-cut processes for nitrogen removal in mainstream wastewater treatment and presents future perspectives for directing research efforts in line with the needs of practice. The modelling status for deammonification (i.e., anammox-based) and nitrite-shunt processes is presented with its challenges and limitations. The importance of mathematical models for considering...
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Femtosecond Er-doped fiber laser source tunable from 872 to 1075 nm for two-photon vision studies in humans
PublicationWe report the development of a widely-tunable femtosecond fiber laser system and its application for two-photon vision studies. The source is based on an Er-doped fiber laser with spectral shift up to 2150 nm, followed by a second harmonic generation module to generate a frequency-doubled beam tunable from 872 to 1075 nm. The source delivers sub-230 fs pulses with nearly-constant duration over the entire tuning range, with output...
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Linear and nonlinear impedance of alkali and iron doped silicate-lead glasses
Open Research DataLinear and nonlinear impedance was studied for lead-silicate glass samples doped with iron ions and alkaline oxides. The compositions of glasses were as follows: (in %mol) 50% SiO2, 25% PbO, 15% Fe2O3 and 15% one of alkaline oxides: Na2O, K2O, Li2O. All samples were prepared by the conventional melt quenching technique. The substrates were powdered...
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Facile formation of self-organized TiO2 nanotubes in electrolyte containing ionic liquid - ethylammonium nitrate and their remarkable photocatalytic properties
PublicationThe oriented TiO2 nanotube arrays (NTs) are identified as a stable, active and recyclable photocatalytic surface. However, their photoactivity is strictly depended on morphology (especially length), which could be controlled by anodic oxidation parameters, including electrolyte properties. To control the morphology, were successfully synthesized a series of NTs by a novel approach where ionic liquid (IL), ethylammonium nitrate...
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Photoactivity of decahedral TiO2 loaded with bimetallic nanoparticles: Degradation pathway of phenol-1- 13 C and hydroxyl radical formation
PublicationDecahedral TiO2decorated with bimetallic nanoparticles were synthesized via radiolysis and photode-position method. The effect of bimetallic surface composition (Ag Pt, Ag Au, Au Pd, Au Pt) as well asdeposition technique (simultaneous or sequential) on the photocatalytic activity in phenol degradationand efficiency of hydroxyl radicals generation under UV–vis light irradiation were investigated. Modifiedand pristine decahedral...
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Synthesis and biological evaluation of N-acylated tyramine sulfamates containing C-F bonds as steroid sulfatase inhibitors
PublicationSteroid sulfatase (STS) is responsible for the hydrolysis of biologically inactive sulfated steroids into their active un-sulfated forms and promotes the growth of various hormone-dependent cancers (e.g., breast cancer). Therefore, the STS enzyme is a promising therapeutic target for the treatment of steroid-sensitive cancers. Herein, we report the synthesis and biological evaluation of sulfamate analogs as potential STS inhibitors...
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Marcin Wekwejt dr inż.
PeopleMarcin Wekwejt holds a bachelor’s degree in Biomedical Engineering (2016; J. and J. Śniadecki Bydgoszcz University of Technology & L. Rydygier Collegium Medicum), a master’s degree in Mechanical-Medical Engineering (2018; Gdańsk University of Technology & Gdańsk Medical University), and a PhD in Materials Engineering (2021; Gdańsk University of Technology). He was awarded the title of Doctor of Engineering and Technical...
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Opposite pressure impact on electron-phonon coupling in Eu2+ and Ce3+ doped AlN
Open Research DataThis data analyzes the influence of pressure on electron–lattice interactions in the 5d excited states of Ce3+ and Eu2+ in the AlN host based on pressure-dependent photoluminescence and photoluminescence excitation spectra. High-pressure measurements on AlN samples doped with Eu2+ and Ce3+ ions reveal that the Stokes shift increases with pressure for...
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Effects of Urea and Trimethylamine-N-oxide on the Properties of Water and the Secondary Structure of Hen Egg White Lysozyme
PublicationW celu określenia sposobu hydratacji mocznika i N-tlenku trimetyloaminy, wykorzystano spektroskopię oscylacyjną FTIR. Dane eksperymentalne, otrzymane z pomiarów widm oscylacyjnych wody półciężkiej (HDO) rozcieńczonej izotopowo w wodnych roztworach badanych związków, analizowane były za pomocą "metody widm różnicowych". Strukturalno-energetyczna charakterystyka wody zaburzonej przez cząsteczki osmolitów wskazuje, że woda zaburzona...