Zobrazeno 1 - 10
of 17
pro vyhledávání: '"Virginija Kepenienė"'
Autor:
Zita Sukackienė, Gitana Valeckytė, Virginija Kepenienė, Irena Stalnionienė, Vitalija Jasulaitiene, Jūratė Vaičiūnienė, Loreta Tamašauskaitė-Tamašiūnaitė, Vidas Pakštas, Eugenijus Norkus
Publikováno v:
Materials, Vol 17, Iss 17, p 4353 (2024)
The production of high-purity hydrogen from hydrogen storage materials with further direct use of generated hydrogen in fuel cells is still a relevant research field. For this purpose, nickel-molybdenum-plated copper catalysts (NiMo/Cu), comprising b
Externí odkaz:
https://doaj.org/article/300ff51bc3a54331b6ca5894038214c9
Autor:
Zita Sukackienė, Aldona Balčiūnaitė, Virginija Kepenienė, Jūratė Vaičiūnienė, Giedrius Stalnionis, Vidas Pakštas, Loreta Tamašauskaitė-Tamašiūnaitė, Eugenijus Norkus
Publikováno v:
Batteries, Vol 8, Iss 9, p 129 (2022)
In this study, cobalt-nickel (Co-Ni), cobalt-iron (Co-Fe), cobalt-iron-manganese (Co-Fe-Mn), cobalt-iron-molybdenum (Co-Fe-Mo), and cobalt-zinc (Co-Zn) coatings were studied as catalysts towards the evolution of hydrogen (HER) and oxygen (OER). The b
Externí odkaz:
https://doaj.org/article/f1b634a0f79941d0b7b5698435ab6a75
Autor:
Virginija KEPENIENĖ, Loreta TAMAŠAUSKAITĖ-TAMAŠIŪNAITĖ, Jolita JABLONSKIENĖ, Jūratė VAIČIŪNIENĖ, Rokas KONDROTAS, Vidas PAKŠTAS, Eugenijus NORKUS
Publikováno v:
Medžiagotyra, Vol 22, Iss 2, Pp 243-248 (2016)
In the present work, Pt nanoparticles were deposited by means of microwave synthesis on the primary carbon supported Nb2O5 composite which was prepared in two different ways: (A) by dispersion of Nb2O5 and carbon with the mass ratio equal to 1:1 in a
Externí odkaz:
https://doaj.org/article/019fb2cd97854002aa7f7f590f55b758
Pd-Supported Co3O4/C Catalysts as Promising Electrocatalytic Materials for Oxygen Reduction Reaction
Autor:
Virginija Kepenienė, Raminta Stagniūnaitė, Sidra Rafique, Jūratė Vaičiūnienė, Vitalija Jasulaitiene, Vidas Pakštas, Zita Sukackienė, Rasa Vilkauskaite, Loreta Tamašauskaitė-Tamašiūnaitė, Eugenijus Norkus
Publikováno v:
Catalysts; Volume 12; Issue 8; Pages: 920
This paper describes the activity of PdCo3O4/C obtained by wet impregnation towards the oxygen reduction reaction (ORR). For this purpose, the Co3O4/C substrate was synthesized using the microwave irradiation heating method with further annealing of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3897a7ccb0a0386296eb0da34b210df4
Autor:
Aldona Balčiūnaitė, Aušrinė Zabielaitė, Zita Sukackienė, Virginija Kepenienė, Dijana Šimkūnaitė, Algirdas Selskis, Loreta Tamašauskaitė-Tamašiūnaitė, Eugenijus Norkus
Publikováno v:
Coatings; Volume 12; Issue 6; Pages: 850
Here we report the optimization of the fabrication conditions for AuNi bimetallic catalysts supported on self-ordered titania nanotube arrays (AuNi-TiO2ntb). A series of efficient AuNi-TiO2ntb catalysts with small amounts of Au in the range of 1.74 t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::19d8d969f645e6cb21a25486a1b56f83
Autor:
Antanas Nacys, Daina Upskuvienė, Jūratė Vaičiūnienė, Teofilius Kilmonis, Raminta Stagniūnaitė, Aldona Balčiūnaitė, Virginija Kepenienė, Jolita Jablonskienė, Eugenijus Norkus, Loreta Tamašauskaitė-Tamašiūnaitė, Martynas Skapas
Publikováno v:
Catalysts; Volume 11; Issue 12; Pages: 1431
Catalysts, Vol 11, Iss 1431, p 1431 (2021)
Catalysts, Vol 11, Iss 1431, p 1431 (2021)
In this study, one-pot microwave-assisted synthesis was used to fabricate the graphene (GR)-supported PtCoM catalysts where M = Mn, Ru, and Mo. The catalysts with the molar ratios of metals Pt:Co:Mn, Pt:Co:Ru, and Pt:Co:Mo equal to 1:3:1, 1:2:2, and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bc63b4186ac36eeedb57a3c9240283b8
Autor:
Daina Upskuvienė, Algirdas Selskis, Eugenijus Norkus, Loreta Tamašauskaitė-Tamašiūnaitė, Virginija Kepenienė, Dijana Šimkūnaitė, Jūratė Vaičiūnienė
Publikováno v:
Chemija. 31
In this study, the carbon powder supported gold nanoparticles composites (AuNPs/C) were prepared via the chemical reduction method by employing sodium citrate or a complex mixture of glucose and ascorbic acid as reducing agents in the presence of sma
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f93a6ef69840666bc0b13d090c0283d8
https://doi.org/10.6001/chemija.v31i4.4319
https://doi.org/10.6001/chemija.v31i4.4319
Autor:
Audrius Drabavičius, Eugenijus Norkus, Mindaugas Andrulevičius, Daina Upskuvienė, Raminta Stagniūnaitė, Vidas Pakštas, Loreta Tamašauskaitė-Tamašiūnaitė, Virginija Kepenienė
Publikováno v:
Chemija. 31
AuCeO2/C and Au/C catalysts were obtained by adsorption of AuNPs on the CeO2/C and pure carbon (C) substrates from an Au colloidal solution. It has been found that AuNPs of ca. 50 nm in size were adsorbed on the surfaces of CeO2/C and C; however, ele
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1d51ab40b656a2402c7bdc098c96471c
https://doi.org/10.6001/chemija.v31i2.4217
https://doi.org/10.6001/chemija.v31i2.4217
Autor:
Virginija Kepenienė, Raminta Stagniūnaitė, Audrius Drabavičius, Mindaugas Andrulevičius, Aivars Zhurinsh, Kätlin Kaare, Aldona Balčiūnaitė, Zita Sukackienė, Eugenijus Norkus, Galina Dobele, Ivar Kruusenberg, Loreta Tamašauskaitė-Tamašiūnaitė, Gediminas Niaura, Aleksandrs Volperts
Publikováno v:
Chemija. 30
In the present study, carbon-derived material from pulping residues, such as black liquor, was doped with a cheap nitrogen precursor, dicyandiamide, and after that modified with cobalt nanoparticles using electroless metal plating. The morphology, st
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a54610182c902d60e0f856f9c8140181
https://doi.org/10.6001/chemija.v30i2.3995
https://doi.org/10.6001/chemija.v30i2.3995
Autor:
Rimantas Vaitkus, Loreta Tamašauskaitė-Tamašiūnaitė, Aldona Balčiūnaitė, Dijana Šimkūnaitė, Daina Upskuvienė, Eugenijus Norkus, Virginija Kepenienė, Birutė Šimkūnaitė-Stanynienė, Zita Sukackienė
Publikováno v:
Scopus-Elsevier
The electrochemical oxidation of glucose was investigated on the Co and CoB alloy coatings, which were deposited on the copper substrate (Cu) and subsequently modified with a small amount of Au nanocrystallites. The catalysts were prepared via a simp
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3773ef4ea86718a11315781b7acd01bc
https://doi.org/10.6001/chemija.v30i1.3922
https://doi.org/10.6001/chemija.v30i1.3922