Temat: Photocatalyst - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Hydrothermal fabrication of CeVO4 nanoflowers assisted effective photocatalytic mineralization of aqueous methylene blue solution
Autorzy:: Muthuvel, I.
Jayasri, U.
Gowthami, K.
Kumar, N. Dinesh
Thirunarayanan, G.
Balakrishnan, K.
Rajachandrasekar, T.
Powiązania:: https://bibliotekanauki.pl/articles/1031461.pdf
Data publikacji:: 2020
Wydawca:: Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:: CeVO4
Cerium vanadate
Methylene Blue
Photocatalyst
Wastewater treatment
Opis:: A tetragonal zircon type cerium vanadate (CeVO4) photocatalyst was successfully synthesized hydrothermal method using Ce(NH4)2(NO3)6 and NH4VO3. The products were characterized using the FT-IR, XRD, FE-SEM and UV-DRS. The XRD results show that crystallite size of cerium vanadate is 27.2 nm. The effect of operational parameters such as effect of pH, catalyst suspension, initial dye concentration and reusability were observed. Hence the catalyst can be reused for continuous treatment of wastewater.
Źródło:: World Scientific News; 2020, 142; 103-119
2392-2192
Pojawia się w:: World Scientific News
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Novel (Ag,Y) doped TiO2 plasmonic photocatalyst with enhanced photocatalytic activity under visible light
Autorzy:: Kallel, Wannes
Chaabene, Sirine
Bouattour, Soraa
Powiązania:: https://bibliotekanauki.pl/articles/110853.pdf
Data publikacji:: 2019
Wydawca:: Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:: titanium dioxide
XRD
plasmonic photocatalyst
Methylene Blue
visible light
Opis:: Nano-sized Y- Ag doped and co-doped TiO2 particles were synthesized using the sol–gel method and Ti(OBu)4 as TiO2 precursor. Their structural and optical properties were examined by scanning electron microscopy (SEM), XRD, thermogravimetric-differential thermal analysis (TG-DTA), FT-IR and UV-vis absorption spectroscopies. The photocatalytic activity of these materials was investigated for the photodegradation of methylene blue (MB) as a model reaction under visible light irradiation. Ground state diffuse reflectance absorption studies reveal that both Y and Ag dopant cause deviations of the band gap to higher energies attesting that co-doping the TiO2 with Y and Ag could enhance the photocatalytic activity by delaying the electron–hole recombination by means of higher energy band gaps. Co-doping TiO2 at a level of 4% (Y, Ag) samples leads to a significant decrease in the crystallite size of photocatalyst and containing both anatase and Ag/AgCl components. However, the high photocatalytic performance is attributed to an efficient electron-hole pairs separation at the photocatalyst interfaces in addition to localized surface plasmon resonance of Ag particles. The development of these visible light- activated nanocatalysts has the potential of providing environmentally benign routes for water treatment.
Źródło:: Physicochemical Problems of Mineral Processing; 2019, 55, 3; 745-759
1643-1049
2084-4735
Pojawia się w:: Physicochemical Problems of Mineral Processing
Dostawca treści:: Biblioteka Nauki

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