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Gałan Anna Jesionek Wioleta Majer-Dziedzic Barbara Lubicki Łukasz Choma Irena M. 《平面色谱法杂志一现代薄层色谱法》2015,28(2):178-183
JPC – Journal of Planar Chromatography – Modern TLC - Coffee, due to its common consumption, is one of the main sources of polyphenols in human diet. Coffee species and coffee-related... 相似文献
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M. Nowak B. Kauch P. Szperlich M. Jesionek M. K?pińska ?. Bober J. Szala G. Moskal T. Rzychoń D. Stró? 《Ultrasonics sonochemistry》2009,16(4):546-551
A novel sonochemical method for direct preparation of nanocrystalline antimony selenoiodide (SbSeI) has been established. The SbSeI gel was synthesized using elemental Sb, Se, and I in the presence of ethanol under ultrasonic irradiation (35 kHz, 2 W/cm2) at 50 °C for 2 h. The product was characterized by using techniques such as powder X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive X-ray analysis (EDAX), high-resolution transmission electron microscopy (HRTEM), selected area electron diffraction (SAED), and optical diffuse reflection spectroscopy (DRS). The SEM and HRTEM investigations exhibit that the as-prepared samples are made up of large quantity nanowires with lateral dimensions of about 20–50 nm and lengths reaching up to several micrometers and single crystalline in nature. 相似文献
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ABSTRACTThe dot-blot bioautography was used to evaluate the antibacterial properties of Thymus vulgaris L. and Salvia officinalis L. essential oils (EOs) produced by three different manufacturers. The whole samples were applied at three concentrations on thin-layer chromatography (TLC) plates which were then subjected to bioautography against Bacillus subtilis. The samples of the highest activity were found. Then, they were separated using TLC and once again subjected to bioautography against B. subtilis. As was proved, only the essential oils of T. vulgaris L. possessed strong antibacterial properties for which mostly thymol and carvacrol were responsible. Their contents were calculated using TLC–UV densitometry. The highest contents were found in the essential oils of the highest antibacterial activity revealed in the dot-blot test. It means that a dot-blot test can be used for simple and fast evaluation of antibacterial properties of essential oils. 相似文献
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M. Nowak M. Kotyczka-Morańska P. Szperlich ?. Bober M. Jesionek M. K?pińska D. Stró? J. Kusz J. Szala G. Moskal T. Rzychoń J. M?yńczak K. Kopczyński 《Ultrasonics sonochemistry》2010,17(5):892-901
The using of sonochemically prepared components for growth of SbI3·3S8 single crystals from the vapor phase is presented for the first time. The good optical quality of the obtained crystals is important because this material is valuable for optoelectronics due to its non-linear optical properties. The products were characterized by using techniques such as X-ray crystallography, powder X-ray diffraction, scanning electron microscopy, energy dispersive X-ray analysis, high-resolution transmission electron microscopy, selected area electron diffraction, optical diffuse reflection spectroscopy and optical transmittance spectroscopy. The direct and indirect forbidden energy gaps of SbI3·3S8 illuminated with plane polarized light with electric field parallel and perpendicular to the c-axis of the crystal have been determined. The second harmonic generation of light in the grown crystals was observed. 相似文献
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M. Nowak M. Jesionek P. Szperlich J. Szala T. Rzycho D. Str 《Ultrasonics sonochemistry》2009,16(6):800-804
This paper presents for the first time the nanocrystalline, semiconducting ferroelectrics antimony sulfoiodide (SbSI) grown in multiwalled carbon nanotubes (CNTs). It was prepared sonochemically using elemental Sb, S and I in the presence of methanol under ultrasonic irradiation (35 kHz, 2.6 W/cm2) at 323 K for 3 h. The CNTs filled with SbSI were characterized by using techniques such as powder X-ray diffraction, scanning electron microscopy, energy dispersive X-ray analysis, high-resolution transmission electron microscopy, selected area electron diffraction, and optical diffuse reflection spectroscopy. These investigations exhibit that the SbSI filling the CNTs is single crystalline in nature and in the form of nanowires. It has indirect forbidden energy band gap EgIf = 1.871(1) eV. 相似文献
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A. Starczewska R. Wrzalik M. Nowak P. Szperlich M. Jesionek G. Moskal T. Rzychoń J. Szala D. Stró? P. Ma?lanka 《Ultrasonics sonochemistry》2009,16(4):537-545
The influence of the substitution of methanol in place of ethanol during the ultrasonic production of antimony sulfoiodide (SbSI) nanowires is presented. The new technology is faster and more efficient at temperatures greater than 314 K. The products were characterized by using techniques such as powder X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive X-ray analysis (EDXA), high-resolution transmission electron microscopy (HRTEM), selected area electron diffraction (SAED), optical diffuse reflection spectroscopy (DRS) and IR spectroscopy. The coexistence of Pna21 (ferroelectric) and Pnam (paraelectric) phases at 298 K was observed in the SbSI nanowires produced in methanol. The methanol decomposes during the sonication or due to the adsorption process on SbSI nanowires. 相似文献
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Jesionek M Nowak M Szperlich P Stróż D Szala J Jesionek K Rzychoń T 《Ultrasonics sonochemistry》2012,19(1):179-185
This paper presents, for the first time, the nanocrystalline, semiconducting antimony selenoiodide (SbSeI) grown in multi-walled carbon nanotubes (CNTs). It was prepared sonochemically using elemental Sb, Se, and I in the presence of ethanol under ultrasonic irradiation (35 kHz, 2.6 W/cm2) at 323 K for 3 h. The CNTs filled with SbSeI were characterized by using techniques such as powder X-ray diffraction, scanning electron microscopy, energy dispersive X-ray analysis, high-resolution transmission electron microscopy, selected area electron diffraction, and optical diffuse reflection spectroscopy. These investigations exhibit that the SbSeI filling the CNTs is single crystalline in nature and in the form of nanowires. It has indirect allowed energy band gap EgIf = 1.61(6) eV. 相似文献
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