Zobrazeno 1 - 10
of 125
pro vyhledávání: '"Silviu, Preda"'
Autor:
Cristina Maria Vlăduț, Crina Anastasescu, Silviu Preda, Oana Catalina Mocioiu, Simona Petrescu, Jeanina Pandele-Cusu, Dana Culita, Veronica Bratan, Ioan Balint, Maria Zaharescu
Publikováno v:
Beilstein Journal of Nanotechnology, Vol 15, Iss 1, Pp 1283-1296 (2024)
Although the microwave-assisted sol–gel method is quite frequently used for the preparation of oxide nanostructures, the synergism of the reaction pathways is not fully explained. However, state-of-the-art theoretical and practical results of high
Externí odkaz:
https://doaj.org/article/593f1b15e51a4aa88bb3739a8cddc65f
Autor:
Mariuca Gartner, Anna Szekeres, Simeon Simeonov, Maria Covei, Mihai Anastasescu, Silviu Preda, Jose Maria Calderon-Moreno, Luminita Predoana, Hermine Stroescu, Daiana Mitrea, Madalina Nicolescu
Publikováno v:
Molecules, Vol 29, Iss 22, p 5480 (2024)
We present comparative studies of sol–gel ITO multilayered films undoped and doped with Nb or Zn (4 at.%). The films were obtained by successive depositions of five layers using the dip-coating sol–gel method on microscopic glass, SiO2/glass, and
Externí odkaz:
https://doaj.org/article/5263551f6f5c40a6bbb927fa9dbc29bd
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:
Ligia Todan, Luminița Predoană, Gabriela Petcu, Silviu Preda, Daniela Cristina Culiță, Adriana Băran, Roxana-Doina Trușcă, Vasile-Adrian Surdu, Bogdan Ștefan Vasile, Adelina-Carmen Ianculescu
Publikováno v:
Gels, Vol 9, Iss 8, p 624 (2023)
Magnesium oxide (MgO) was synthesized by three different methods: the sol–gel (SG), microwave-assisted sol–gel (MW), and hydrothermal (HT) methods for comparing the influence of the preparation conditions on the properties of the products. The po
Externí odkaz:
https://doaj.org/article/f05ac29052004a25954f50ee849484f1
Autor:
Diana Pelinescu, Mihai Anastasescu, Veronica Bratan, Valentin-Adrian Maraloiu, Catalin Negrila, Daiana Mitrea, Jose Calderon-Moreno, Silviu Preda, Ioana Catalina Gîfu, Adrian Stan, Robertina Ionescu, Ileana Stoica, Crina Anastasescu, Maria Zaharescu, Ioan Balint
Publikováno v:
Gels, Vol 9, Iss 8, p 650 (2023)
Nanostructured oxides (SiO2, TiO2) were synthesized using the sol–gel method and modified with noble metal nanoparticles (Pt, Au) and ruthenium dye to enhance light harvesting and promote the photogeneration of reactive oxygen species, namely singl
Externí odkaz:
https://doaj.org/article/1519a812c0d3430dbcdde5fa593c4f16
Autor:
Gabriela Petcu, Florica Papa, Elena Maria Anghel, Irina Atkinson, Silviu Preda, Simona Somacescu, Daniela C. Culita, Adriana Baran, Elena Madalina Ciobanu, Luiza Maria Jecu, Mariana Constantin, Viorica Parvulescu
Publikováno v:
Gels, Vol 9, Iss 6, p 503 (2023)
The present work reports the synthesis of efficient Ti–Au/zeolite Y photocatalysts by different processing of aluminosilicate gel and studies the effect of titania content on the structural, morphological, textural, and optical properties of the ma
Externí odkaz:
https://doaj.org/article/f170c82641dc4a6f88d56ce215f652e9
Autor:
Luminița Predoană, Gabriela Petcu, Silviu Preda, Jeanina Pandele-Cușu, Simona Viorica Petrescu, Adriana Băran, Nicoleta G. Apostol, Ruxandra M. Costescu, Vasile-Adrian Surdu, Bogdan Ştefan Vasile, Adelina C. Ianculescu
Publikováno v:
Gels, Vol 9, Iss 4, p 267 (2023)
Using the microwave-assisted sol–gel method, Zn- and Cu-doped TiO2 nanoparticles with an anatase crystalline structure were prepared. Titanium (IV) butoxide was used as a TiO2 precursor, with parental alcohol as a solvent and ammonia water as a cat
Externí odkaz:
https://doaj.org/article/38c4263e32d7411cbf4b959cc768adb0
Autor:
Crina Anastasescu, Simona Neagu, Silviu Preda, Daniela Culita, Mihaela Stancu, Cristian Banciu, Cornel Munteanu, Veronica Bratan, Jose Maria Calderon-Moreno, Razvan State, Mihai Anastasescu, Madalin Enache, Ioan Balint, Maria Zaharescu
Publikováno v:
Antioxidants, Vol 12, Iss 3, p 691 (2023)
ZnSe, ZnSe-TiO2 microspheres and nanostructured TiO2 obtained by hydrothermal and sol–gel methods were tested against Staphylococcus aureus ATCC 25923 and Micrococcus lysodeikticus ATCC 4698 before and after lysozyme (Lys) loading. Morphological ch
Externí odkaz:
https://doaj.org/article/08dcf4590801467a9683188bd738dfa5
Autor:
Cristina Maria Vlăduț, Oana-Cătălina Mocioiu, Silviu Preda, Jeanina Pandele-Cusu, Veronica Bratan, Roxana Trusca, Maria Zaharescu
Publikováno v:
Gels, Vol 8, Iss 12, p 811 (2022)
In this paper, we conducted a fundamental study concerning the effect of thermal treatment on the structure and morphology of 2 mol% vanadium doped ZnO nanopowders obtained by microwave assisted sol–gel method (MW). The samples were analyzed by DTA
Externí odkaz:
https://doaj.org/article/681a524b1e534c7dbe1f1c334b6434e8
Autor:
Madalina Nicolescu, Daiana Mitrea, Cristian Hornoiu, Silviu Preda, Hermine Stroescu, Mihai Anastasescu, Jose Maria Calderon-Moreno, Luminita Predoana, Valentin Serban Teodorescu, Valentin-Adrian Maraloiu, Maria Zaharescu, Mariuca Gartner
Publikováno v:
Gels, Vol 8, Iss 11, p 717 (2022)
The aim of the present study was the development of Nb-doped ITO thin films for carbon monoxide (CO) sensing applications. The detection of CO is imperious because of its high toxicity, with long-term exposure having a negative impact on human health
Externí odkaz:
https://doaj.org/article/737919e62b274e4a8a2a410bcf4c9a43