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Carbon dioxide and methane are two of the principal greenhouse gases. Reduction of their content in the atmosphere is currently the subject of much worldwide research. Dry and combined reforming of methane are effective methods of CO2 and CH4 utilization and production of synthesis gas (syngas) in chemical technology. Testing of catalysts that provide the desired H2/CO ratio and long operation time is one of the critical aspects of syngas production and the focus of much study. In this study, K-promoted Ni/MgAl2O4 catalysts prepared using a co-precipitation-impregnation method with different K/Ni ratios (range of 0–0.15) were examined in dry reforming of methane (DRM). The obtained catalysts were characterized using X-ray diffractometry (XRD), atomic emission spectrometry (MP-AES), Brunauer–Emmett–Teller (BET) specific surface area, BJH pore size distribution, TEM imaging, analysis of reducibility H2-TPR, infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS), Hammet basicity analysis, thermogravimetric analysis (TG) and elemental carbon-hydrogen-nitrogen analysis (CHN). Promotion of nickel catalysts with potassium led to changes in nickel distribution, metal-support interactions and deceleration of carbon deposition while enhancing sorption of carbon dioxide and reduction of nH2:CO to 0.5 for 0.7 K–Ni/MgAl2O4 catalyst. To obtain the required H2:CO ratio close to unity a study on the effect of steam in inlet stream was performed. It was found that maintaining inlet stream composition equal CH4:CO2:H2O = 1.0:1.0:0.1 obtained an H2:CO ratio close to unity.
Izabela Wysocka; Aleksandra Mielewczyk-Gryń; Marcin Łapiński; Bartłomiej Cieślik; Andrzej Rogala. Effect of small quantities of potassium promoter and steam on the catalytic properties of nickel catalysts in dry/combined methane reforming. International Journal of Hydrogen Energy 2020, 46, 3847 -3864.
AMA StyleIzabela Wysocka, Aleksandra Mielewczyk-Gryń, Marcin Łapiński, Bartłomiej Cieślik, Andrzej Rogala. Effect of small quantities of potassium promoter and steam on the catalytic properties of nickel catalysts in dry/combined methane reforming. International Journal of Hydrogen Energy. 2020; 46 (5):3847-3864.
Chicago/Turabian StyleIzabela Wysocka; Aleksandra Mielewczyk-Gryń; Marcin Łapiński; Bartłomiej Cieślik; Andrzej Rogala. 2020. "Effect of small quantities of potassium promoter and steam on the catalytic properties of nickel catalysts in dry/combined methane reforming." International Journal of Hydrogen Energy 46, no. 5: 3847-3864.
A better understanding how to the component concentration, photocatalytic properties and toxicity of multicomponent TiO2-based nanomaterials (NMs) may lead to rational design of new and safe NMs with wide application in air purification.
Anna Malankowska; Alicja Mikołajczyk; Joanna Of Mędrzycka; Izabela Wysocka; Grzegorz Nowaczyk; Marcin Jarek; Tomasz Puzyn; Ewa Mulkiewicz. The effect of Ag, Au, Pt, and Pd on the surface properties, photocatalytic activity and toxicity of multicomponent TiO2-based nanomaterials. Environmental Science: Nano 2020, 7, 3557 -3574.
AMA StyleAnna Malankowska, Alicja Mikołajczyk, Joanna Of Mędrzycka, Izabela Wysocka, Grzegorz Nowaczyk, Marcin Jarek, Tomasz Puzyn, Ewa Mulkiewicz. The effect of Ag, Au, Pt, and Pd on the surface properties, photocatalytic activity and toxicity of multicomponent TiO2-based nanomaterials. Environmental Science: Nano. 2020; 7 (11):3557-3574.
Chicago/Turabian StyleAnna Malankowska; Alicja Mikołajczyk; Joanna Of Mędrzycka; Izabela Wysocka; Grzegorz Nowaczyk; Marcin Jarek; Tomasz Puzyn; Ewa Mulkiewicz. 2020. "The effect of Ag, Au, Pt, and Pd on the surface properties, photocatalytic activity and toxicity of multicomponent TiO2-based nanomaterials." Environmental Science: Nano 7, no. 11: 3557-3574.
Hybrid materials of conjugated polymer and titanium(IV) oxide have attracted considerable attention concerning their potential benefits, including (i) efficient exploitation of visible light, (ii) a high adsorption capacity for organic contaminants, (iii) and effective charge carriers separation. The new class of the photocatalysts is promising for the removal of environmental pollutants in both aqueous and gaseous phases. For the first time, in this study, the polyaniline (PANI)–TiO2 hybrid composite was used for the degradation of phenol in water and toluene in the gas phase. Polyaniline–TiO2 was prepared by the in situ polymerization of aniline on the TiO2 surface. The obtained hybrid material was characterized by diffuse reflectance spectroscopy (DR/UV-Vis), X-ray diffraction (XRD), fast-Fourier transformation spectroscopy (FTIR), photoluminescence (PL) spectroscopy, microscopy analysis (SEM/TEM), and thermogravimetric analysis (TGA). An insight into the mechanism was shown based on the photodegradation analysis of charge carrier scavengers. Polyaniline is an efficient TiO2 photosensitizer for photodegradation in visible light (λ > 420 nm). The trapping experiments revealed that mainly h+ and ˙OH were the reactive oxygen species that were responsible for phenol degradation. Furthermore, the PANI–TiO2 hybrid nanocomposite was used in gypsum plaster to study the self-cleaning properties of the obtained building material. The effect of PANI–TiO2 content on the hydrophilic/hydrophobic properties and crystallographic structure of gypsum was studied. The obtained PANI–TiO2-modified gypsum plaster had improved photocatalytic activity in the reaction of toluene degradation under Vis light.
Agnieszka Sulowska; Izabela Wysocka; Daniel Pelczarski; Jakub Karczewski; Anna Zielińska-Jurek. Hybrid TiO2–Polyaniline Photocatalysts and their Application in Building Gypsum Plasters. Materials 2020, 13, 1516 .
AMA StyleAgnieszka Sulowska, Izabela Wysocka, Daniel Pelczarski, Jakub Karczewski, Anna Zielińska-Jurek. Hybrid TiO2–Polyaniline Photocatalysts and their Application in Building Gypsum Plasters. Materials. 2020; 13 (7):1516.
Chicago/Turabian StyleAgnieszka Sulowska; Izabela Wysocka; Daniel Pelczarski; Jakub Karczewski; Anna Zielińska-Jurek. 2020. "Hybrid TiO2–Polyaniline Photocatalysts and their Application in Building Gypsum Plasters." Materials 13, no. 7: 1516.
Hybrid materials of conjugated polymer and titanium(IV) oxide have attracted considerable attention concerning potential benefits, including (i) efficient exploitation of visible light, (ii) high adsorption capacity for organic contaminants, (iii) effective charge carriers separation. The new class of the photocatalysts is promising for the removal of environmental pollutants in both aqueous and gaseous phases. For the first time, in this study, the PANI/TiO2 hybrid composite was used for the degradation of phenol in water and toluene in the gas phase. Polyaniline-TiO2 was prepared by in-situ polymerization of aniline on the TiO2 surface. The obtained hybrid material was characterized by diffuse reflectance spectroscopy (DR/UV-Vis), X-ray diffraction (XRD), fast-Fourier transformation spectroscopy (FTIR), photoluminescence (PL) spectroscopy, microscopy analysis (SEM/TEM) and thermogravimetric analysis (TGA). An insight into the mechanism was shown based on the photodegradation analysis of charge carriers scavengers. Polyaniline is an efficient TiO2 photosensitizer for photodegradation in visible light (λ> 420 nm). The trapping experiments revealed that mainly h+ and ˙OH were reactive oxygen species responsible for phenol degradation. Furthermore, the PANI-TiO2 hybrid nanocomposite was used in gypsum plaster to study the self-cleaning properties of the obtained building material. The effect of PANI-TiO2 content on hydrophilic/hydrophobic properties and crystallographic structure of gypsum was studied. The obtained PANI-TiO2 modified gypsum plaster had improved photocatalytic activity in the reaction of toluene degradation under Vis light.
Agnieszka Sulowska; Izabela Wysocka; Daniel Pelczarski; Anna Zielińska-Jurek. Hybrid TiO2-Polyaniline Photocatalysts and Their Application in Building Gypsum Plasters. 2020, 1 .
AMA StyleAgnieszka Sulowska, Izabela Wysocka, Daniel Pelczarski, Anna Zielińska-Jurek. Hybrid TiO2-Polyaniline Photocatalysts and Their Application in Building Gypsum Plasters. . 2020; ():1.
Chicago/Turabian StyleAgnieszka Sulowska; Izabela Wysocka; Daniel Pelczarski; Anna Zielińska-Jurek. 2020. "Hybrid TiO2-Polyaniline Photocatalysts and Their Application in Building Gypsum Plasters." , no. : 1.
Different TiO2 photocatalysts, i.e., commercial samples (ST-01 and P25 with minority of rutile phase), nanotubes, well-crystallized faceted particles of decahedral shape and mesoporous spheres, were used as supports for deposition of Pt nanoparticles (NPs). Size-controlled Pt NPs embedded in TiO2 were successfully prepared by microemulsion and wet-impregnation methods. Obtained photocatalysts were characterized using XRD, TEM, X-ray photoelectron spectroscopy (XPS), Brunauer–Emmett–Teller (BET) specific surface area, DR/UV-vis and action spectrum analysis. The effect of deposition method, amount of Pt precursor and TiO2 properties on size, distribution, and chemical states of deposited Pt NPs were investigated. Finally, the correlations between the physicochemical properties and photocatalytic activities in oxidation and reduction reactions under UV and Vis light of different Pt-TiO2 photocatalysts were discussed. It was found that, regardless of preparation method, the photoactivity mainly depended on platinum and TiO2 morphology. In view of this, we claim that the tight control of NPs’ morphology allows us to design highly active materials with enhanced photocatalytic performance. Action spectrum analysis for the most active Pt-modified TiO2 sample showed that visible light-induced phenol oxidation is initiated by excitation of platinum surface plasmon, and photocatalytic activity analysis revealed that photoactivity depended strongly on morphology of the obtained Pt-modified TiO2 photocatalysts.
Anna Zielińska-Jurek; Zhishun Wei; Marcin Janczarek; Izabela Wysocka; Ewa Kowalska. Size-Controlled Synthesis of Pt Particles on TiO2 Surface: Physicochemical Characteristic and Photocatalytic Activity. Catalysts 2019, 9, 940 .
AMA StyleAnna Zielińska-Jurek, Zhishun Wei, Marcin Janczarek, Izabela Wysocka, Ewa Kowalska. Size-Controlled Synthesis of Pt Particles on TiO2 Surface: Physicochemical Characteristic and Photocatalytic Activity. Catalysts. 2019; 9 (11):940.
Chicago/Turabian StyleAnna Zielińska-Jurek; Zhishun Wei; Marcin Janczarek; Izabela Wysocka; Ewa Kowalska. 2019. "Size-Controlled Synthesis of Pt Particles on TiO2 Surface: Physicochemical Characteristic and Photocatalytic Activity." Catalysts 9, no. 11: 940.
The photocatalytic deactivation of volatile organic compounds and mold fungi using TiO2 modified with mono- and bimetallic (Pt, Cu, Ag) particles is reported in this study. The mono- and bimetal-modified (Pt, Cu, Ag) titanium(IV) oxide photocatalysts were prepared by chemical reduction method and characterized using XRD, XPS, DR/UV-Vis, BET, and TEM analysis. The effect of incident light, type and content of mono- and bimetallic nanoparticles deposited on titanium(IV) oxide was studied. Photocatalytic activity of as-prepared nanocomposites was examined in the gas phase using LEDs array. High photocatalytic activity of Ag/Pt-TiO2 and Cu/Pt-TiO2 in the reaction of toluene degradation resulted from improved efficiency of interfacial charge transfer process, which was consistent with the fluorescence quenching effect revealed by photoluminescence (PL) emission spectra. The photocatalytic deactivation of Penicillium chrysogenum, a pathogenic fungi present in the indoor environment, especially in a damp or water-damaged building using mono- and bimetal-modified (Pt, Cu, Ag) titanium(IV) oxide was evaluated for the first time. TiO2 modified with mono- and bimetallic NPs of Ag/Pt, Cu, and Ag deposited on TiO2 exhibited improved fungicidal activity under LEDs illumination than pure TiO2 .
Izabela Wysocka; Agata Markowska‐Szczupak; Piotr Szweda; Jacek Ryl; Maya Endo‐Kimura; Ewa Kowalska; Grzegorz Nowaczyk; Anna Zielińska‐Jurek. Gas‐phase removal of indoor volatile organic compounds and airborne microorganisms over mono‐ and bimetal‐modified (Pt, Cu, Ag) titanium(IV) oxide nanocomposites. Indoor Air 2019, 29, 979 -992.
AMA StyleIzabela Wysocka, Agata Markowska‐Szczupak, Piotr Szweda, Jacek Ryl, Maya Endo‐Kimura, Ewa Kowalska, Grzegorz Nowaczyk, Anna Zielińska‐Jurek. Gas‐phase removal of indoor volatile organic compounds and airborne microorganisms over mono‐ and bimetal‐modified (Pt, Cu, Ag) titanium(IV) oxide nanocomposites. Indoor Air. 2019; 29 (6):979-992.
Chicago/Turabian StyleIzabela Wysocka; Agata Markowska‐Szczupak; Piotr Szweda; Jacek Ryl; Maya Endo‐Kimura; Ewa Kowalska; Grzegorz Nowaczyk; Anna Zielińska‐Jurek. 2019. "Gas‐phase removal of indoor volatile organic compounds and airborne microorganisms over mono‐ and bimetal‐modified (Pt, Cu, Ag) titanium(IV) oxide nanocomposites." Indoor Air 29, no. 6: 979-992.
Noble metal nanoparticles (NMNPs) enhanced TiO2 response and extended its activity under visible light. Photocatalytic activity of TiO2 modified with noble metal nanoparticles strongly depends on the physicochemical properties of NMNPs. Among others, the differences in the size of NMNPs seems to be one of the most important factors. In this view, the effect of the metal's nanoparticles size, type and amount on TiO2 photocatalytic and biocidal activity was investigated. TiO2 modified with mono- and bimetallic nanoparticles of Pt, Cu and Ag were prepared using chemical and thermal reduction methods. Obtained nanocomposites were characterized using transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD) and diffuse-reflectance spectroscopy (DR/UV-Vis) techniques. The photocatalytic activity was examined in 2-propanol oxidation and hydrogen generation processes. The mechanism of modified TiO2 excitation was evaluated in action spectrum measurements during phenol oxidation. A possibility of using less energy-consuming light sources as a set of light-emitting diodes (LEDs) selected based on action spectrum results was examined. It was found that the differences in NMNPs size were the result of the reduction method. Moreover, coupling with a second metal strongly affected and differentiated the photocatalytic and biocidal activity of the obtained TiO2-based photocatalysts.
Izabela Wysocka; Ewa Kowalska; Jacek Ryl; Grzegorz Nowaczyk; Anna Zielińska-Jurek. Morphology, Photocatalytic and Antimicrobial Properties of TiO2 Modified with Mono- and Bimetallic Copper, Platinum and Silver Nanoparticles. Nanomaterials 2019, 9, 1129 .
AMA StyleIzabela Wysocka, Ewa Kowalska, Jacek Ryl, Grzegorz Nowaczyk, Anna Zielińska-Jurek. Morphology, Photocatalytic and Antimicrobial Properties of TiO2 Modified with Mono- and Bimetallic Copper, Platinum and Silver Nanoparticles. Nanomaterials. 2019; 9 (8):1129.
Chicago/Turabian StyleIzabela Wysocka; Ewa Kowalska; Jacek Ryl; Grzegorz Nowaczyk; Anna Zielińska-Jurek. 2019. "Morphology, Photocatalytic and Antimicrobial Properties of TiO2 Modified with Mono- and Bimetallic Copper, Platinum and Silver Nanoparticles." Nanomaterials 9, no. 8: 1129.
Dry reforming of methane (DRM) is an eco-friendly method of syngas production due to the utilization of two main greenhouse gases—methane and carbon dioxide. An industrial application of methane dry reforming requires the use of a catalyst with high activity, stability over a long time, and the ability to catalyze a reaction, leading to the needed a hydrogen/carbon monoxide ratio. Thus, the aim of the study was to investigate the effect of support and noble metal particles on catalytic activity, stability, and selectivity in the dry reforming process. Ni and Ni–Ru based catalysts were prepared via impregnation and precipitation methods on SiO2, ZrO2, Al2O3, and MgAl2O4 supports. The obtained catalysts were characterized using X-ray diffractometry (XRD), inductively coupled plasma optical emission spectrometry (ICP-OES), Brunauer–Emmett–Teller (BET) specific surface area, and elemental carbon-hydrogen-nitrogen-sulphur analysis (CHNS) techniques. The catalytic activity was investigated in the carbon dioxide reforming of a methane process at 800 °C. Catalysts supported on commercial Al2O3 and spinel MgAl2O4 exhibited the highest activity and stability under DRM conditions. The obtained results clearly indicate that differences in catalytic activity result from the dispersion, size of an active metal (AM), and interactions of the AM with the support. It was also found that the addition of ruthenium particles enhanced the methane conversion and shifted the H2/CO ratio to lower values.
Izabela Wysocka; Jan Hupka; Andrzej Rogala. Catalytic Activity of Nickel and Ruthenium–Nickel Catalysts Supported on SiO2, ZrO2, Al2O3, and MgAl2O4 in a Dry Reforming Process. Catalysts 2019, 9, 540 .
AMA StyleIzabela Wysocka, Jan Hupka, Andrzej Rogala. Catalytic Activity of Nickel and Ruthenium–Nickel Catalysts Supported on SiO2, ZrO2, Al2O3, and MgAl2O4 in a Dry Reforming Process. Catalysts. 2019; 9 (6):540.
Chicago/Turabian StyleIzabela Wysocka; Jan Hupka; Andrzej Rogala. 2019. "Catalytic Activity of Nickel and Ruthenium–Nickel Catalysts Supported on SiO2, ZrO2, Al2O3, and MgAl2O4 in a Dry Reforming Process." Catalysts 9, no. 6: 540.
Increased interest in the use of microemulsion and nanoemulsion delivery systems for medical, cosmetic and food purposes, promotes the development of research on their physical and chemical stability, and the safety of use. Here, we have for the first time evaluated the oxidative stability of linseed oil dispersed in the microemulsion, nanoemulsion, and their gelled systems, stored under different conditions, and compared to the bulk oil. Oxidative stability was determined by measuring the peroxide value and p-anisidine value of the oil phase. All systems had an identical proportion of oil to surfactant mixture and were obtained by low energy methods. Carbopol 940 was used as the gelator. The influence of sunlight in ambient conditions, elevated temperature, oxygen presence and UV radiation on the oxidation of oil in emulsions was determined. The results indicate different influence of the analyzed conditions on the oxidation stages of individual emulsions. Due to the high transparency and small particle sizes, micro-, nanoemulsions, and particularly their gelled forms were the most sensitive to UV radiation. However, the gelation process inhibited the oxidation caused by temperature and the presence of oxygen. In addition, the results show a counter-intuitive result in that, under all test conditions, the oxidative stability of the oil was higher in emulsions compared to bulk oil.
Patrycja Szumała; Izabela Wysocka. Effect of gelation and storage conditions on the oxidative stability of microemulsion and nanoemulsion delivery systems. European Journal of Pharmaceutical Sciences 2018, 124, 17 -25.
AMA StylePatrycja Szumała, Izabela Wysocka. Effect of gelation and storage conditions on the oxidative stability of microemulsion and nanoemulsion delivery systems. European Journal of Pharmaceutical Sciences. 2018; 124 ():17-25.
Chicago/Turabian StylePatrycja Szumała; Izabela Wysocka. 2018. "Effect of gelation and storage conditions on the oxidative stability of microemulsion and nanoemulsion delivery systems." European Journal of Pharmaceutical Sciences 124, no. : 17-25.
The combination of TiO2 photocatalyst and magnetic oxide nanoparticles enhances the separation and recoverable properties of nanosized TiO2 photocatalyst. Metal-modified (Me = Pd, Au, Pt, Cu) TiO2/[email protected] nanocomposites were prepared by an ultrasonic-assisted sol-gel method. All prepared samples were characterized by X-ray powder diffraction (XRD) analysis, Brunauer-Emmett-Teller (BET) method, X-ray photoelectron spectroscopy (XPS), scanning transmission electron microscopy (STEM), Mott-Schottky analysis and photoluminescence spectroscopy (PL). Phenol oxidation pathways of magnetic photocatalysts modified with Pt, Pd, Cu and Au nanoparticles proceeded by generation of reactive oxygen species, which oxidized phenol to benzoquinone, hydroquinone and catechol. Benzoquinone and maleic acid were products, which were determined in the hydroquinone oxidation pathway. The highest mineralization rate was observed for Pd-TiO2/[email protected] and Cu-TiO2/[email protected] photocatalysts, which produced the highest concentration of catechol during photocatalytic reaction. For Pt-TiO2/[email protected] nanocomposite, a lack of catechol after 60 min of irradiation resulted in low mineralization rate (CO2 formation). It is proposed that the enhanced photocatalytic activity of palladium and copper-modified photocatalysts is related to an increase in the amount of adsorption sites and efficient charge carrier separation, whereas the keto-enol tautomeric equilibrium retards the rate of phenol photomineralization on Au-TiO2/[email protected] The magnetization hysteresis loop indicated that the obtained hybrid photocatalyst showed magnetic properties and therefore could be easily separated after treatment process.
Izabela Wysocka; Ewa Kowalska; Konrad Trzciński; Marcin Łapiński; Grzegorz Nowaczyk; Anna Zielińska-Jurek. UV-Vis-Induced Degradation of Phenol over Magnetic Photocatalysts Modified with Pt, Pd, Cu and Au Nanoparticles. Nanomaterials 2018, 8, 28 .
AMA StyleIzabela Wysocka, Ewa Kowalska, Konrad Trzciński, Marcin Łapiński, Grzegorz Nowaczyk, Anna Zielińska-Jurek. UV-Vis-Induced Degradation of Phenol over Magnetic Photocatalysts Modified with Pt, Pd, Cu and Au Nanoparticles. Nanomaterials. 2018; 8 (1):28.
Chicago/Turabian StyleIzabela Wysocka; Ewa Kowalska; Konrad Trzciński; Marcin Łapiński; Grzegorz Nowaczyk; Anna Zielińska-Jurek. 2018. "UV-Vis-Induced Degradation of Phenol over Magnetic Photocatalysts Modified with Pt, Pd, Cu and Au Nanoparticles." Nanomaterials 8, no. 1: 28.
In the present study treatability of persistent organic compounds from the flow back water after hydrauling fracturing was investigated. The combination of TiO2 photocatalyst and magnetic oxide nanoparticles enhance the separation and recoverable property of nanosized TiO2 photocatalyst. Fe3O4/TiO2 and [email protected]/TiO2 nanocomposites were prepared by heteroagglomeration. The photocatalysts’ characteristics by X-ray diffractometry (XRD), scanning electron microscopy (SEM), diffuse reflectance spectroscopy (DRS) showed that sample with the mass ratio of Fe3O4 to TiO2 equal 1:4 and molar ratio of TEOS:Fe3O4 = 8:1 and NH4OH:TEOS = 16:1 obtained by deposition TiO2 P25 (Evonik) on magnetite core had about 124 m2 g−1 specific surface area and superparamagnetic properties. The prepared composites contained TiO2 and Fe3O4 crystal phases. The photocatalytic activity was estimated by measuring the decomposition rate of three model pollutants identified in the flow back water from one of the Baltic Shale Basin. Regarding flow back water treatment after shale gas exploration, the progress of photocatalytic degradation of organic compounds was measured by chemical oxygen demand (COD) concentration. The [email protected]/TiO2_P25 composite nanoparticles were recovered and re-used without significant reduction of efficiency.
Anna Zielińska-Jurek; Zuzanna Bielan; Izabela Wysocka; Judyta Strychalska; Marcin Janczarek; Tomasz Klimczuk. Magnetic semiconductor photocatalysts for the degradation of recalcitrant chemicals from flow back water. Journal of Environmental Management 2017, 195, 157 -165.
AMA StyleAnna Zielińska-Jurek, Zuzanna Bielan, Izabela Wysocka, Judyta Strychalska, Marcin Janczarek, Tomasz Klimczuk. Magnetic semiconductor photocatalysts for the degradation of recalcitrant chemicals from flow back water. Journal of Environmental Management. 2017; 195 ():157-165.
Chicago/Turabian StyleAnna Zielińska-Jurek; Zuzanna Bielan; Izabela Wysocka; Judyta Strychalska; Marcin Janczarek; Tomasz Klimczuk. 2017. "Magnetic semiconductor photocatalysts for the degradation of recalcitrant chemicals from flow back water." Journal of Environmental Management 195, no. : 157-165.
Series of Pt–N/TiO2 photocatalysts were synthesized using the sol–gel method. The photocatalysts’ characteristics by X-ray diffractometry (XRD), scanning transmission electron microscopy (STEM), diffuse reflectance spectroscopy (DRS), X-ray photoelectron spectroscopy (XPS) showed that sample with the molar ratio Ti:N equal 1:4 and platinum nanoparticles size of about 3 nm had anatase structure, about 94 m2/g specific surface area and nitrogen content about 0.7 at.%. The photocatalytic activity was estimated by measuring the decomposition rate of phenol in 0.2 mM aqueous solution under Vis and UV/Vis light irradiation. Compared to N–TiO2 and Pt–TiO2 samples, the photocatalytic activity was improved markedly for samples Pt–N/TiO2 regarding the observed synergistic effect of nitrogen and platinum. The formation of hydroxyl radicals (OH) on the surface of Pt–N/TiO2 nanocomposites was detected by the luminescence technique using terephthalic acid as probe molecules. Regarding flow back fluid treatment after shale gas exploration, the progress of photocatalytic degradation of organic compounds was measured by the total organic carbon (TOC) concentration.
Anna Zielińska-Jurek; Izabela Wysocka; Marcin Janczarek; Waldemar Stampor; Jan Hupka. Preparation and characterization of Pt–N/TiO 2 photocatalysts and their efficiency in degradation of recalcitrant chemicals. Separation and Purification Technology 2015, 156, 369 -378.
AMA StyleAnna Zielińska-Jurek, Izabela Wysocka, Marcin Janczarek, Waldemar Stampor, Jan Hupka. Preparation and characterization of Pt–N/TiO 2 photocatalysts and their efficiency in degradation of recalcitrant chemicals. Separation and Purification Technology. 2015; 156 ():369-378.
Chicago/Turabian StyleAnna Zielińska-Jurek; Izabela Wysocka; Marcin Janczarek; Waldemar Stampor; Jan Hupka. 2015. "Preparation and characterization of Pt–N/TiO 2 photocatalysts and their efficiency in degradation of recalcitrant chemicals." Separation and Purification Technology 156, no. : 369-378.
Anna Zielińska-Jurek; Zhishun Wei; Izabela Wysocka; Piotr Szweda; Ewa Kowalska. The effect of nanoparticles size on photocatalytic and antimicrobial properties of Ag-Pt/TiO2 photocatalysts. Applied Surface Science 2015, 353, 317 -325.
AMA StyleAnna Zielińska-Jurek, Zhishun Wei, Izabela Wysocka, Piotr Szweda, Ewa Kowalska. The effect of nanoparticles size on photocatalytic and antimicrobial properties of Ag-Pt/TiO2 photocatalysts. Applied Surface Science. 2015; 353 ():317-325.
Chicago/Turabian StyleAnna Zielińska-Jurek; Zhishun Wei; Izabela Wysocka; Piotr Szweda; Ewa Kowalska. 2015. "The effect of nanoparticles size on photocatalytic and antimicrobial properties of Ag-Pt/TiO2 photocatalysts." Applied Surface Science 353, no. : 317-325.
Raw data for XRD diffractograms of MAX phases: V2AlC and Mo3AlC2 and corresponding MXenes after selective etching of Al. MAX matrices (V2AlC and Mo3AlC2) were purchased from Luoyang Tongrun Info Technology, China. MXenes were prepared via selective etching of aluminium using hydrofluoric acid (40%) for 96 h at room temperature. After the etching, the powders were flirted, washed with water and ethanol until pH reached 6. Then, the MXenes were dried under vacuum at 50˚C for 24 h.
Izabela Wysocka. XRD data of V2AlC, Mo3AlC2, Mo3CTx and V2AlCTx. 2021, 1 .
AMA StyleIzabela Wysocka. XRD data of V2AlC, Mo3AlC2, Mo3CTx and V2AlCTx. . 2021; ():1.
Chicago/Turabian StyleIzabela Wysocka. 2021. "XRD data of V2AlC, Mo3AlC2, Mo3CTx and V2AlCTx." , no. : 1.