Zobrazeno 1 - 10
of 32
pro vyhledávání: '"Dana Gingasu"'
Structural, Morphological, and Optical Properties of Single and Mixed Ni-Co Aluminates Nanoparticles
Autor:
Dana Gingasu, Ovidiu Oprea, Gabriela Marinescu, Jose Maria Calderon Moreno, Daniela C. Culita, Silviu Preda, Vasile-Adrian Surdu
Publikováno v:
Inorganics, Vol 11, Iss 9, p 371 (2023)
A series including single and mixed Ni-Co aluminates was obtained using the precursor method, with malic acid as a ligand. The malate precursors (polynuclear coordination compounds) were isolated and characterized by Fourier Transform Infrared (FTIR)
Externí odkaz:
https://doaj.org/article/66d92518bf96475ca2413deacae30722
Autor:
Dana Gingasu, Ioana Mindru, Adelina-Carmen Ianculescu, Lucian Diamandescu, Vasile-Adrian Surdu, Gabriela Marinescu, Cristina Bartha, Silviu Preda, Marcela Popa, Mariana Carmen Chifiriuc
Publikováno v:
Magnetochemistry, Vol 8, Iss 2, p 12 (2022)
Nanosized CoFe1.8RE0.2O4 (RE3+ = Tb3+, Er3+) ferrites were obtained through wet ferritization method. These ferrites were characterized by X-ray diffraction (XRD), scanning electron microscopy (FE-SEM), transmission electron microscopy (TEM/HR-TEM),
Externí odkaz:
https://doaj.org/article/25780e8e6d1144aaa953733f66f1788e
Autor:
Dana Gingasu, Lucian Diamandescu, Ioana Mindru, Gabriela Marinescu, Daniela C. Culita, Jose Maria Calderon-Moreno, Silviu Preda, Cristina Bartha, Luminita Patron
Publikováno v:
Croatica Chemica Acta, Vol 88, Iss 4, Pp 445-451 (2015)
Chromium substituted cobalt ferrites (CoFe2–xCrxO4, 0 ≤ x ≤ 2) were synthesized through solution combustion method using glycine as fuel, named glycine-nitrates process (GNP). As evidenced by X-ray diffraction data (XRD), single cubic spinel ph
Externí odkaz:
https://doaj.org/article/822b3618e16f4e5894f3027e19393c3f
Publikováno v:
Journal of the Serbian Chemical Society, Vol 73, Iss 10, Pp 979-988 (2008)
Lithium ferrite was prepared by the thermal decomposition of three polynuclear complex compounds containing as ligands the anions of malic, tartaric and gluconic acid: (NH4)2[Fe2.5Li0.5(C4H4O5)3(OH)4(H2O)2]×4H2O (I), (NH4)6[Fe2.5Li0.5(C4H4O6)3(OH)8]
Externí odkaz:
https://doaj.org/article/09399ac3915143618e551f689c979da2
Autor:
Simona Somacescu, Silviu Preda, Adelina Ianculescu, Dana Gingasu, Gabriela Marinescu, Daniela C. Culita, Vasile-Adrian Surdu, Ovidiu Oprea, Ioana Mindru, Bogdan Stefan Vasile
Publikováno v:
Journal of Materials Science: Materials in Electronics. 32:11220-11231
This paper introduces for the first time the preparation of cobalt aluminate (CoAl2O4) nanoparticles through a solution combustion method using a Mentha piperita leaves extract. The active constituents present in the mentha leaves extract act as both
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::482640ae6ae78906dbb3260aa81cbdac
https://doi.org/10.1007/s10854-021-05791-z
https://doi.org/10.1007/s10854-021-05791-z
Autor:
Dana Gingasu, Daniela C. Culita, Jose Maria Calderon Moreno, Ovidiu Oprea, Gabriela Marinescu, Silviu Preda, Andrei Kuncser
Publikováno v:
Materials Today Communications. 33:104656
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d4e2388242a02a0e1320f2887b97e0d7
https://doi.org/10.1016/j.mtcomm.2022.104656
https://doi.org/10.1016/j.mtcomm.2022.104656
Autor:
Dana Gingasu, Silviu Preda, Daniela C. Culita, Jose M. Calderon-Moreno, Ioana Mindru, Simona Greculeasa, Cristina Bartha, Ovidiu Oprea, Nicusor Iacob
Publikováno v:
Applied Physics A. 127
This paper describes for the first time two processing routes—the precursor method and the two-step wet chemical process—for the synthesis of magnetic cobalt ferrite using the Tamarindus indica fruit extract. These green approaches are eco-friend
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b3276a69423ccd111ddda2347baed834
https://doi.org/10.1007/s00339-021-05044-0
https://doi.org/10.1007/s00339-021-05044-0
Autor:
Constantin-Daniel Negut, Vasile-Adrian Surdu, Silviu Preda, Luminita Patron, Ioana Mindru, Ovidiu Oprea, Adelina Ianculescu, Daniela C. Culita, Dana Gingasu
Publikováno v:
Materials Science and Engineering: B. 246:42-48
The nanostructured cobalt aluminate (CoAl2O4) was obtained through an eco-friendly precursor method using aqueous extract of tamarind fruit. The use of plant extracts is a simple and effective approach for the preparation of CoAl2O4 nanoparticles. Th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8f16fe37c47ae607546d28848fce0458
https://doi.org/10.1016/j.mseb.2019.05.031
https://doi.org/10.1016/j.mseb.2019.05.031
Autor:
Viorica Parvulescu, Dana Gingasu, Gabriela Marinescu, Ioana Mindru, Jose M. Calderon-Moreno, Silviu Preda, Luminita Patron, Lucian Diamandescu, Daniela C. Culita, Ovidiu Oprea
Publikováno v:
Chemical Papers. 72:3203-3213
Chromium substituted cobalt ferrites CoFe2−xCrxO4 (x = 0; 1; 1.5) were synthesized through a soft chemistry method—the gluconate precursor route. The gluconate precursors were characterized by infrared spectroscopy (IR), ultraviolet–visible spe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e8ac65d3f293afaaabd752152671af27
https://doi.org/10.1007/s11696-018-0553-0
https://doi.org/10.1007/s11696-018-0553-0
Autor:
Mihail Secu, Daniela C. Culita, Gabriela Marinescu, Jose M. Calderon-Moreno, Luminita Patron, Dana Gingasu, Ioana Mindru, Silviu Preda
Publikováno v:
Ceramics International. 43:16668-16675
Un-doped and doped strontium aluminates (Sr 3 Al 2 O 6 , Sr 3 Al 2 O 6 :Tb 3+ , Sr 3 Al 2 O 6 :Tb 3+ ,Eu 3+ and Sr 3 Al 2 O 6 :Tb 3+ ,Eu 3+ /Eu 2+ ) were synthesized through a soft chemical method – the tartarate precursor route. The tartarate prec
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::69eb565851356e1ed6c4badb0ff18dd4
https://doi.org/10.1016/j.ceramint.2017.09.057
https://doi.org/10.1016/j.ceramint.2017.09.057