Zobrazeno 1 - 10
of 111
pro vyhledávání: '"Jekaterina Kozlova"'
Autor:
Jaana Lilloja, Oluwaseun E. Fetuga, Elo Kibena‐Põldsepp, Arvo Kikas, Maike Käärik, Jaan Aruväli, Jekaterina Kozlova, Alexey Treshchalov, Vambola Kisand, Jaan Leis, Kaupo Kukli, Kaido Tammeveski
Publikováno v:
ChemElectroChem, Vol 11, Iss 19, Pp n/a-n/a (2024)
Abstract In this work, iron‐ and nitrogen‐doped carbide‐derived carbon and carbon nanotube (CDC/CNT) composites are prepared and used as oxygen reduction reaction (ORR) electrocatalysts in acidic conditions. Three different approaches are taken
Externí odkaz:
https://doaj.org/article/18271e25dc6643ebacde5713e0bd655e
Autor:
Yogesh Kumar, Elo Kibena-Põldsepp, Srinu Akula, Jekaterina Kozlova, Arvo Kikas, Jaan Aruväli, Vambola Kisand, Kaupo Kukli, Kaido Tammeveski
Publikováno v:
Electrochemistry Communications, Vol 157, Iss , Pp 107623- (2023)
The focus in the development of catalysts doped with transition metals aims to replace platinum group metal catalysts in fuel cells. However, these non-precious metal catalysts exhibit limited performance in acidic environment for the oxygen reductio
Externí odkaz:
https://doaj.org/article/45759659aa424913ba0d0c7a927c13ed
Autor:
Sanni M. A. Färkkilä, Monika Mortimer, Raivo Jaaniso, Anne Kahru, Valter Kiisk, Arvo Kikas, Jekaterina Kozlova, Imbi Kurvet, Uno Mäeorg, Maarja Otsus, Kaja Kasemets
Publikováno v:
Nanomaterials, Vol 14, Iss 1, p 10 (2023)
Plant resource sharing mediated by mycorrhizal fungi has been a subject of recent debate, largely owing to the limitations of previously used isotopic tracking methods. Although CdSe/ZnS quantum dots (QDs) have been successfully used for in situ trac
Externí odkaz:
https://doaj.org/article/809ad0221e344f0497056b9755a61a13
Autor:
Margus Kodu, Rainer Pärna, Tea Avarmaa, Indrek Renge, Jekaterina Kozlova, Tauno Kahro, Raivo Jaaniso
Publikováno v:
Chemosensors, Vol 11, Iss 8, p 460 (2023)
Chemiresistive gas sensors were produced by functionalizing graphene with a ~3 nm layer of mixed oxide xCu2O⸱yMnO using pulsed laser deposition (PLD) from a hopcalite CuMn2O4 target. Sensor response time traces were recorded for strongly oxidizing
Externí odkaz:
https://doaj.org/article/bb9a11fa26cf422281bc0e2c47df2412
Autor:
Yogesh Kumar, Srinu Akula, Elo Kibena-Põldsepp, Maike Käärik, Jekaterina Kozlova, Arvo Kikas, Jaan Aruväli, Vambola Kisand, Jaan Leis, Aile Tamm, Kaido Tammeveski
Publikováno v:
Materials, Vol 16, Iss 14, p 5105 (2023)
Rechargeable zinc-air batteries (RZAB) have gained significant attention as potential energy storage devices due to their high energy density, cost-effectiveness, and to the fact that they are environmentally safe. However, the practical implementati
Externí odkaz:
https://doaj.org/article/881d0a1ee40341d89e0fde1b1011eab8
Autor:
Jonas Mart Linge, Heiki Erikson, Peeter Ritslaid, Arvo Kikas, Vambola Kisand, Jaan Aruväli, Jekaterina Kozlova, Aile Tamm, Ave Sarapuu, Kaido Tammeveski
Publikováno v:
Catalysts, Vol 13, Iss 6, p 976 (2023)
As energy demand increases, new energy conversion methods are also sought. In this study, two MnO2 and multiwalled carbon nanotube (MWCNT) composites were prepared and decorated with silver using magnetron sputtering, to evaluate their electrocatalyt
Externí odkaz:
https://doaj.org/article/657000403a704a8388eae694e2a6aa5e
Autor:
Tauno Kahro, Kristina Raudonen, Joonas Merisalu, Aivar Tarre, Peeter Ritslaid, Aarne Kasikov, Taivo Jõgiaas, Tanel Käämbre, Markus Otsus, Jekaterina Kozlova, Harry Alles, Aile Tamm, Kaupo Kukli
Publikováno v:
Nanomaterials, Vol 13, Iss 8, p 1323 (2023)
SiO2 films were grown to thicknesses below 15 nm by ozone-assisted atomic layer deposition. The graphene was a chemical vapor deposited on copper foil and transferred wet-chemically to the SiO2 films. On the top of the graphene layer, either continuo
Externí odkaz:
https://doaj.org/article/a04d80afdb2a45dbada4cec7bab3baa9
Autor:
Kristjan Kalam, Markus Otsus, Jekaterina Kozlova, Aivar Tarre, Aarne Kasikov, Raul Rammula, Joosep Link, Raivo Stern, Guillermo Vinuesa, José Miguel Lendínez, Salvador Dueñas, Helena Castán, Aile Tamm, Kaupo Kukli
Publikováno v:
Nanomaterials, Vol 12, Iss 15, p 2593 (2022)
HfO2 and Fe2O3 thin films and laminated stacks were grown by atomic layer deposition at 350 °C from hafnium tetrachloride, ferrocene, and ozone. Nonlinear, saturating, and hysteretic magnetization was recorded in the films. Magnetization was expecte
Externí odkaz:
https://doaj.org/article/2271c693f7d7404ead496a8338d38daa
Publikováno v:
Carbon Trends, Vol 3, Iss , Pp 100037- (2021)
Sol-gel-derived porous carbon is an attractive electrode material for various applications because its structure, along with its physical properties, can be tailored to the specified task by selecting suitable precursors and synthesis conditions. To
Externí odkaz:
https://doaj.org/article/5d4585f9564f4ab4aa917ef0005f5518
Autor:
Iris Palm, Elo Kibena-Põldsepp, Uno Mäeorg, Jekaterina Kozlova, Maike Käärik, Arvo Kikas, Jaan Leis, Vambola Kisand, Aile Tamm, Kaido Tammeveski
Publikováno v:
Electrochemistry Communications, Vol 125, Iss , Pp 106976- (2021)
In this study, two compounds (melamine phosphate and hexachlorocyclotriphosphazene) were used as nitrogen and phosphorus precursors to dope silicon carbide-derived carbon (SiCDC) with nitrogen and phosphorus moieties. The successful heteroatom doping
Externí odkaz:
https://doaj.org/article/9d57cf7fdebd405da2c473e035a2db04