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Wyszukujesz frazę "photo reduction" wg kryterium: Temat


Wyświetlanie 1-2 z 2
Tytuł:
Investigation of structural, optical and antibacterial effect of copper nanoparticles synthesis by photoreduction
Autorzy:
Hilal, Zahraa Hadi
Wahab, Farah Lateef
Hila, Israa Hadi
Powiązania:
https://bibliotekanauki.pl/articles/1191426.pdf
Data publikacji:
2016
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Nanocopper
photo reduction
optical properties
Antibacterial effect
Opis:
The copper nanoparticles films has been prepared via the reduction of copper salts CuSO4•5H2O by UV-lamps. The irradiation time changed from 15 min. to one hour effects on the morphology of dispersed copper nanoparticles were studied. The structure properties of the films were determined by X-ray diffraction, the change on the surface morphology was observed using atomic force microscope (AFM). Finally, The optical transmission of thin films was measured by UV-VIS spectrometer, during the preparation of observed that the color of dispersion gradually changed from blue coloration, brown finally dark brown by changing with irradiation time .As well as studies the biochemical and antibacterial effect of nano colloid studying by using Pseudomonas aeruginosa, Bacillus subtitis, Escherichia coli and Klebsiella phenmoniae. The copper nanoparticles is increasing its antibacterial activities. Actions of copper nanoparticles synthesized in both above method was also observed against both gram (-) and gram (+) bacteria.
Źródło:
World Scientific News; 2016, 40; 1-11
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Study the Radiation Time Effect of Synthesis Silver Nanoparticles by Photo Reduction Method
Autorzy:
Abdullah, H. l.
Kadhim, K. J.
Hilal, I. H.
Powiązania:
https://bibliotekanauki.pl/articles/1192092.pdf
Data publikacji:
2016
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
silver nanocolloids
AFM
photo reduction
Opis:
Highly stable dispersion of nanosized silver nanoparticles were prepared by the reduction of silver salt (silver nitrite - AgNO3 ) by photo reduction methods UV-lamps. The irradiation time from 6 min. to one hour effects on the morphology of dispersed silver nanoparticles were studied. The formation of silver nanoparticles characterized by means of ultraviolet-visible spectroscopy, X-ray diffraction spectroscopy and transmission electron microscopy (AFM). During the preparation of observed that the color of dispersion gradually changed from white, yellow, orange, brown finally dark brown by changing with irradiation time, it is also the acidic solutions (PH) have decreased by increasing the duration of irradiation in addition to get different nanoparticles size lies between (33.988-93.175) nm.
Źródło:
World Scientific News; 2016, 37; 220-231
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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