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Evaluation of Nanoporous Carbon Synthesized from Direct Carbonization of a Metal–Organic Complex as a Highly Effective Dye Adsorbent and Supercapacitor
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Catalytic carbonization of polypropylene into cup-stacked carbon nanotubes with high performances in adsorption of heavy metallic ions and organic dyes
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Partition coefficients of selected environmentally important volatile organic compounds determined by gas - liquid chromatography with polydimethylsiloxane stationary phase
PublikacjaPrzedstawiono wartości współczynników podziału (stałych podziału) 14 lotnych związków organicznych istotnych dla stanu środowiska (często oznaczanych w powietrzu w pomieszczeniach zamkniętych) między fazą gazową (N2) a ciekłą (PDMS). Wyznaczano je dwiema technikami (izotermiczną i z liniowo programowanym wzrostem temperatury). Dowiedziono, że istnieje możliwość wyznaczania współczynników podziału techniką LTPRI w oparciu o skalę...
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Highly efficient organic electrophosphorescent light-emitting diodes with a reduced quantum efficiency roll off at large current densities.
PublikacjaW pracy opisano diody elektrofosforescencyjne zbudowane na bazie organicznych komplesów platyny PtOEP oraz Pt(thpy)2. Pokazano, ze mechanizmem ograniczjącym wydajność świecenia tych diod w zakresiedużych prądów elektycznych jest elektrycznopolowa dysocjacja ekscytonutrypletowego z transferem dziury na molekułę TPD.
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Single-dopant organic white electrophosphorescent diodes with very high efficiency and its reduced current density roll-off
PublikacjaW pracy opisano konstrukcję wysokowydajnej diody elektrofosforescencyjnej zawierającej domieszkę organicznego kompleksu platyny PtL2Cl (L oznacza organiczny ligand). Dioda emituje światło białe które pochodzi od ekscymerów świecących w czerwieni i wzbudzonych monomerów świecących w części niebieskiej widma. Kwantowa wydajność świecenia diody wynosi ok. 15% i słabo maleje ze wzrostem gęstości płynącego prądu elektrycznego.
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Membrane-SPME the best 'green' sample preparation technique for the gas chromatographic determination polar organic pollutants in polar media
PublikacjaOne of the most popular technique for sample preparation, which fulfill requirements of green analytical chemistry, is solid phase microextraction (SPME). Because of the undoubted advantages of SPME technique, solvent-free character of the extraction process and the enormous potential in analytical practice, a series of studies has been undertaken to develop new technical solutions, where improving the sensitivity and the extraction...
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New approach based on solid-phase extraction for the assessment of organic compound pollutions in so-called pharmaceutically pure water
PublikacjaOpisano mozliwość zastosowania nowej procedury analitycznej opartej na wykorzystaniu techniki ekstrakcji do fazy stałej (na etapie izolacji i wzbogacania analitów) do oznaczania śladowych ilości zanieczyszczeń organicznych w wodzie specjalnej czystości używanej do celów farmaceutycznych.Próbka badanej wody jest przepuszczana przez złoże sorbenta, które jest osuszane za pomocą strumienia oczyszczonego powietrza, przed etapem termicznej...
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Exciton quenching in emitter blends for organic light emitting devices probed by electric field-dependent time-resolved luminescence
PublikacjaW pracy badano mechanizm wygaszania ekscytonów w układzie dwuamina TPD:organiczny kompleks Eu:matryca TPD przez pomiar zaniku fotoluminescencji w zewnętrznym polu elektrycznym.
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Self-Sensitized Photocatalytic Degradation of Colorless Organic Pollutants Attached to Rutile Nanorods—Experimental and Theoretical DFT+D Studies
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Predicting enthalpy of vaporization for Persistent Organic Pollutants with Quantitative Structure–Property Relationship (QSPR) incorporating the influence of temperature on volatility
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Nutritional Value of Jerusalem Artichoke Tubers (Helianthus tuberosus L.) Grown in Organic System under Lithuanian and Polish Conditions
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Studies of the Variability of Sugars, Vitamin C, and Chlorophylls in Differently Fermented Organic Leaves of Willowherb (Chamerion angustifolium (L.) Holub)
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The river water influence on cationic and anionic dyes collection by nickel foam with carbonized metal-organic frameworks and carbon nanotubes
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Surface Site Modulations by Conjugated Organic Molecules To Enhance Visible Light Activity of ZnO Nanostructures in Photocatalytic Water Splitting
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Ratio of selenium concentrations between soil, forage plants and blood serum of beef cattle studied in organic and conventional farms
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Entrained Flow Plasma Gasification of Sewage Sludge–Proof-of-Concept and Fate of Inorganics
PublikacjaSewage sludge is a residue of wastewater processing that is biologically active and consists of water, organic matter, including dead and living pathogens, polycyclic aromatic hydrocarbons, and heavy metals, as well as organic and inorganic pollutants. Landfilling is on the decline, giving way to more environmentally friendly utilisation routes. This paper presents the results of a two-stage gasification–vitrification system, using...
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Łukasz Ponikiewski dr hab. inż.
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Passive sampling and/or extraction techniques in environmental analysis: a review
PublikacjaThe current state-of-the-art of passive sampling and/or extraction methods for long-term monitoring of pollutants in different environmental compartments is discussed in this review. Passive dosimeters that have been successfully used to monitor organic and inorganic contaminants in air, water, sediments, and soil are presented. The application of new approaches to the determination of pollutants at the sampling stage is discussed....
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Factors causing degradation of sulfadimetoxine
PublikacjaSulfadimetoxine is a representative of sulfonamide drugs which presence inhibits growth of activated sludge bacteria, rhat is necessary for the effective mineralization of organic and inorganic contaminants. Therefore factors which con prevent this situation are searched. Aim of this study is selection of conditions causing efficien degradation of the drug- sulfadimetoxine. The impact of such aspects as : the type of oxidizing...
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Study of the influence of the presence of Dr fimbriae on the hydrophobicity of cells of recombinant Escherichia coli strains: AAEC191A and BL21(DE3)
Dane BadawczeThe ability of a cell surface to repel or adhere to surfaces is crucial, and it was assessed through a microbiological adhesion test involving hexadecane and xylene. In this method, microorganisms in an aqueous layer are mixed with an organic layer, and after completion, the absorbance of each sample is measured at a 570 nm wavelength. The results obtained...
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Fabrication and photoactivity of ionic liquid–TiO2 structures for efficient visible-light-induced photocatalytic decomposition of organic pollutants in aqueous phase
PublikacjaTo investigate the effect of the ionic liquid (IL) chain length on the surface properties and photoactivity of TiO2, a series of TiO2 microspheres have been synthesized via a solvothermal method assisted by 1-methyl-3-octadecylimidazolium chloride ([ODMIM][Cl]) and 1-methyl-3-tetradecylimidazolium chloride ([TDMIM][Cl]). All as-prepared samples were characterized by X-ray powder diffraction (XRD), X-ray photoelectron spectroscopy...
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Electronic nose as a tool for differentiation of volatile organic compounds = Elektroniczny nos jako instrument do rozróżniania lotnych związków organicznych
PublikacjaW pracy porównano dwie metody analizy zapachów lotnych związków organicznych: klasyczną analizę opartą na percepcji ludzkiego węchu i technikę elektronicznego nosa. W przeprowadzonych badaniach za pomocą klasycznej analizy brało udział 8 ochotników w okresie 2 tygodni. Do instrumentalnej metody analizy zapachu wykorzystano zaprojektowany przez autorów prototypowy 6-cio czujnikowy elektroniczny nos. Przeprowadzone badania z wykorzystaniem...
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Synergistic catalysis of Fe3O4/CuO bimetallic catalyst derived from Prussian blue analogues for the efficient decomposition of various organic pollutants
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Converting real-world mixed waste plastics into porous carbon nanosheets with excellent performance in the adsorption of an organic dye from wastewater
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Volatile organic pollutants in the Odra river - sources. Lotne związki organiczne obecne w wodach rzeki Odry - próba identyfikacji.
PublikacjaPrzedstawiono wyniki oznaczania i identyfikacji lotnych związków organicznych obecnych w wodach Odry. Próbki do analiz pobierano w ramach Międzynarodowego Programu Odra. W badaniach wykorzystano zestaw do jednoczesnego wymywania i wychwytywania analitów na stałym sorbencie (Purge and Trap)Oznaczenia końcowe wykonano z wykorzystaniem techniki chromatografii gazowej połączonej ze spektrometrem mas. W wodach zidentyfikowano szeroką...
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New heterometallic Co/Zn, Ag/Co, and Ag/Zn imidazolates: structural characterization and catalytic activity in the oxidation of organic compounds
PublikacjaNanocrystalline powders of monometallic and bimetallic imidazolates of Co, Zn, and Ag were produced by a reaction carried out in water. The powders were characterized by powder X-ray diffraction and the crystal structures of new compounds Ag2ZnIm4 and Ag2CoIm4 (Im = imidazolate) were solved. Heterometallic Co/Zn imidazolates showed the standard ZIF-8 crystal structure while Ag/Zn and Ag/Co systems were isostructural with the copper...
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Development of headspace-gas chromatography-flame ionization detection procedure to determine volatile fatty acids in zoo organic waste leachate
PublikacjaNadrzędnym celem pracy było opracowanie metodyki oznaczania lotnych kwasów tłuszczowych z fazy nadpowierzchniowej opartej na chromatografii gazowej z detektorem płomieniowo-jonizacyjnym oraz sprawdzenie jej przydatności w analizie próbek odcieku ze składowiska odpadów ogrodu zoologicznego. Na podstawie przeprowadzonych badań określono warunki, w jakich przebiegać powinna izolacja lotnych kwasów tłuszczowych, a także określono najlepsze...
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Differentiation of the concentration of heavy metals and persistent organic pollutants in lake sediments depending on the catchment management (Lake Gopło case study)
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Direct QSPR: the most efficient way of predicting organic carbon/water partition coefficient (log K OC) for polyhalogenated POPs
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Synthesis of Micro-Spikes and Herringbones Structures by Femtosecond Laser Pulses on a Titanium Plate—A New Material for Water Organic Pollutants Degradation
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Thermally induced formation of zinc oxide nanostructures with tailoring morphology during metal organic framework (MOF-5) carbonization process
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Selective Photocatalytic Oxidation of 4-Methoxybenzyl Alcohol to p-Anisaldehyde in Organic-Free Water in a Continuous Annular Fixed Bed Reactor
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Bioactive hybrid metal-organic framework (MOF)-based nanosensors for optical detection of recombinant SARS-CoV-2 spike antigen
PublikacjaFast, efficient, and accurate detection of SARS-CoV-2 spike antigen is pivotal to control the spread and reduce themortality of COVID-19. Nevertheless, the sensitivity of available nanobiosensors to detect recombinant SARS-CoV-2 spike antigen seems insufficient. As a proof-of-concept, MOF-5/CoNi2S4 is developed as a low-cost, safe, and bioactive hybrid nanostructure via the one-pot high-gravity protocol. Then, the porphyrin, H2TMP,...
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Biocomposites from recycled resources as candidates for laboratory reference material to validate analytical tools used in organic compounds emissions investigation
PublikacjaA suitably chosen reference material should meet specific criteria like representing one of the compound classes most commonly occurring in indoor materials as well as having optimal long-term stability during storage and transport to its destination point and having a compact size. The described interdisciplinary pilot research was aimed to develop and characterize a polymer-based candidate for the laboratory reference material...
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Exploring the Reactivity of Unsymmetrical Diphosphanes toward Heterocumulenes: Access to Phosphanyl and Phosphoryl Derivatives of Amides, Imines, and Iminoamides
PublikacjaWe present a comprehensive study on the diphosphanation of iso(thio)cyanates by unsymmetrical diphosphanes. The reactions involving unsymmetrical diphosphanes and phenyl isocyanate or phenyl thioisocyanate gave rise to phosphanyl, phosphoryl, and thiophosphoryl derivatives of amides, imines, and iminoamides. The structures of the diphosphanation products were confirmed through NMR spectroscopy, IR spectroscopy, and single-crystal...
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Ordered titania nanotubes layer selectively annealed by laser beam for high contrast electrochromic switching
PublikacjaThe phase conversion from amorphous into crystalline one in the selected area of as-anodized titania nanotubes was achieved via laser treatment. The optimized processing parameters enable fast, one-minute crystallization of titania within an area limited by a shadow mask and without any morphology damage of ordered TiO2 tubular film. The laser annealed titania nanotubes could be easily overgrown by a conducting polymer without...
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Electrochemical and photoelectrochemical properties of the interface between titania nanotubes covered by conducting polymer in aqueous by conducting polymer in aqueous electrolytes – The effect of various geometry and electrolytes concentration
PublikacjaIn the present work we show the impact of nanotubes (NTs) geometry of titania utilized as a substrate in organic-inorganic systems acting as a p-n junction on efficient conversion of radiation energy into electrochemical energy. The electrolytic bath composition and electrolysis conditions were controlled in order to obtain TiO2NTs of various geometry as a result of electrochemical oxidation of titanium foil. The electrode material...
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The effects of gas exposure on the graphene/AlGaN/GaN heterostructure under UV irradiation
PublikacjaThis work demonstrates a graphene/AlGaN/GaN sensing device with two-dimensional electron gas (2DEG) toward nitrogen dioxide (NO2), tetrahydrofuran, and acetone detection under UV light irradiation. We propose combining measurements of the DC characteristics with a fluctuation-enhanced sensing method to provide insight into the gas detection mechanisms in the synergistic structure of highly stable GaN and gas-sensitive graphene....
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Polymer and graphitic carbon nitride based nanohybrids for the photocatalytic degradation of pharmaceuticals in wastewater treatment – A review
PublikacjaPharmaceuticals, including antibiotics and anti-inflammatory drugs, have been frequently detected in water reservoirs, in concentrations ranging from ng/L to μg/L, owing to their wide use in treatment of human and animal disease. Their uncontrolled use results in their increased release into the environment which is harmful for humans, animals, aquatic life and aquatic system. To remove these pollutants from water bodies, various...
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Magdalena Śliwka-Kaszyńska dr hab.
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Recent Developments in the Synthesis of Unsymmetrical Disulfanes (Disulfides). A Review
PublikacjaThe synthesis of unsymmetrical disulfanes is an important transformation in organic synthesis and medicinal chemistry. The current review is intended to summarize achievements in the synthesis of unsymmetrical disulfanes over the last decade (2004–2014).
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Effect of Laminar Pulsatile Fluid Flow on Separation of Volatile Organic Compounds from Aqueous Solution by a Hollow Fiber Membrane-Based Process
PublikacjaIn this study, a laminar pulsatile fluid flow was used for the separation of benzene, toluene, ethylbenzene, and xylene isomers (BTEX) from aqueous solutions. Polyether sulfone hollow fiber membrane has been applied to this process. The effects of BTEX concentration, and feed and extraction flow rates were examined. It was found that the application of the pulsatile fluid flow with...
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Solubility Characteristics of Acetaminophen and Phenacetin in Binary Mixtures of Aqueous Organic Solvents: Experimental and Deep Machine Learning Screening of Green Dissolution Media
PublikacjaThe solubility of active pharmaceutical ingredients is a mandatory physicochemical characteristic in pharmaceutical practice. However, the number of potential solvents and their mixtures prevents direct measurements of all possible combinations for finding environmentally friendly, operational and cost-effective solubilizers. That is why support from theoretical screening seems to be valuable. Here, a collection of acetaminophen...
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High-Speed Videoendoscopy Enhances the Objective Assessment of Glottic Organic Lesions: A Case-Control Study with Multivariable Data-Mining Model Development
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Materiały wewnętrzne jako źródło lotnych związków organicznych w powietrzu wewnętrznym = Indoor building materials as source of volatile organic compound
PublikacjaW pracy przedstawiono źródła lotnych związków organicznych w powietrzu wewnętrznym, ze szczególnym uwzględnieniem materiałów budowlanych i materiałów wykorzystywanych jako elementy wyposażenia pomieszczeń. Omówiono sposób prowadzenia badań przesiewowych oraz badań z zastosowaniem komory testowej, które pozwoliły na ocenę natężenia strumienia emisji lotnych związków organicznych z materiałów wewnętrznych.
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A new pH/organic modifier gradient RP HPLC method for convenient determination of lipophilicity and acidity of drugs as applied to established imidazoline agents
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Determination of nicotine in saliva, urine and wastewater samples using tantalum metal organic framework pipette tip micro-solid phase extraction
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Chemical Quality of Bottled Waters: A Review
PublikacjaBottled water has become very popular for quenching thirst and as a dietary (mineral) supplement. Theplethora of natural mineral waters precludes any unequivocal system of classification, which makes it difficult for theconsumer to choose a water with properties that suits him/her exactly. The ever-increasing popularity of bottled watersmeans that it is of the utmost importance to determine not only their mineral content, but above...
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Rafał Grubba dr hab. inż.
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Classification of submandibular salivary stones based on ultrastructural studies
PublikacjaIntroduction: Sialolithiasis remains a clinical problem with unclear etiopathogenesis, lack of prevention methods, and only surgical treatment. Materials and methods: An ultrastructure examination of submandibular sialoliths obtained from patients with chronic sialolithiasis was conducted using a scanning electron microscope and X‐ray photoelectron spectroscopy. Results: Based on the results, we divided sialoliths into three types:...