@{MTMT:34409869,
	title = {Functionalized carbon nanostructures for PEMFCs: catalyst and membrane},
	url = {https://m2.mtmt.hu/api/publication/34409869},
	author = {Selim, Asmaa Khaled Mohamed and Ayyubov, Ilgar and Tálas, Emília and Borbáth, Irina and Tompos, András},
	booktitle = {Handbook of Functionalized Carbon Nanostructures: From Synthesis Methods to Applications},
	doi = {10.1007/978-3-031-14955-9_76-1},
	unique-id = {34409869},
	year = {2024}
}

@article{MTMT:32327556,
	title = {Synthesis and Characterization of Graphite Oxide Derived TiO2-Carbon Composites as Potential Electrocatalyst Supports},
	url = {https://m2.mtmt.hu/api/publication/32327556},
	author = {Ayyubov, Ilgar and Borbáth, Irina and Pászti, Zoltán and Sebestyén, Zoltán and Mihály, Judith and Szabó, Tamás and Nyergesné Illés, Erzsébet and Domján, Attila and Florea, Mihaela and Radu, Dana and Kuncser, Andrei and Tompos, András and Tálas, Emília},
	doi = {10.1007/s11244-021-01513-1},
	journal-iso = {TOP CATAL},
	journal = {TOPICS IN CATALYSIS},
	unique-id = {32327556},
	issn = {1022-5528},
	abstract = {TiO2-C (carbon) hybrid materials are promising electrocatalyst supports because the presence of TiO2 results in enhanced stability. Use of new types of carbonaceous materials such as reduced graphene oxide instead of traditional active carbon provides certain benefits. Although the rutile polymorph of TiO2 seems to have the most beneficial properties in these hybrid materials, the anatase type is more frequent in TiO2-rGO composites, especially in graphite oxide (GO) derived ones, as GO has several properties which may interfere with rutile formation. To explore and evaluate these peculiarities and their influence on the composite formation, we compared TiO2-C systems formulated with GO and Black Pearls (BP) carbon. Various physicochemical methods, such as attenuated total reflection infrared (ATR-IR)-, solid state NMR-, Raman- and X-ray photoelectron spectroscopy, X-ray powder diffraction (XRD), electron microscopy, etc. were used to characterize the samples from the different stages of our multistep sol–gel synthesis. Our experiments demonstrated that utilization of GO is indeed feasible for composite preparation, although its sodium contamination has to be removed during the synthesis. On the other hand, high temperature treatment and/or solvothermal treatment during composite synthesis resulted in decomposition of the functional groups of the GO and the functional properties of the final product were similar in case of both composites. However, Pt/TiO2-GO derived sample showed higher oxygen reduction reaction activity than Pt/TiO2-BP derived one. Based on the decrease of electrochemical surface area, the stability order was the following: Pt/C (commercial) < Pt/TiO2-BP derived C < Pt/TiO2-GO derived C. © 2021, The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.},
	year = {2024},
	eissn = {1572-9028},
	orcid-numbers = {Szabó, Tamás/0000-0001-8182-640X; Nyergesné Illés, Erzsébet/0000-0002-2901-9616; Florea, Mihaela/0000-0002-6612-6090}
}

@article{MTMT:34088284,
	title = {Reductive Treatment of Pt Supported on Ti0.8Sn0.2O2-C Composite: A Route for Modulating the Sn–Pt Interactions},
	url = {https://m2.mtmt.hu/api/publication/34088284},
	author = {Maria Cristina, Silva Cisneros and Salmanzade, Khirdakhanim and Borbáth, Irina and Dodony, Erzsébet and Olasz, Dániel and Sáfrán, György and Kuncser, Andrei and Pásztiné Gere, Erzsébet and Tompos, András and Pászti, Zoltán},
	doi = {10.3390/nano13152245},
	journal-iso = {NANOMATERIALS-BASEL},
	journal = {NANOMATERIALS},
	volume = {13},
	unique-id = {34088284},
	abstract = {The composites of transition metal-doped titania and carbon have emerged as promising supports for Pt electrocatalysts in PEM fuel cells. In these multifunctional supports, the oxide component stabilizes the Pt particles, while the dopant provides a co-catalytic function. Among other elements, Sn is a valuable additive. Stong metal-support interaction (SMSI), i.e., the migration of a partially reduced oxide species from the support to the surface of Pt during reductive treatment is a general feature of TiO2-supported Pt catalysts. In order to explore the influence of SMSI on the stability and performance of Pt/Ti0.8Sn0.2O2-C catalysts, the structural and catalytic properties of the as prepared samples measured using XRD, TEM, XPS and electrochemical investigations were compared to those obtained from catalysts reduced in hydrogen at elevated temperatures. According to the observations, the uniform oxide coverage of the carbon backbone facilitated the formation of Pt–oxide–C triple junctions at a high density. The electrocatalytic behavior of the as prepared catalysts was determined by the atomic closeness of Sn to Pt, while even a low temperature reductive treatment resulted in Sn–Pt alloying. The segregation of tin oxide on the surface of the alloy particles, a characteristic material transport process in Sn–Pt alloys after oxygen exposure, contributed to a better stability of the reduced catalysts.},
	year = {2023},
	eissn = {2079-4991},
	orcid-numbers = {Maria Cristina, Silva Cisneros/0000-0002-1333-7126; Olasz, Dániel/0000-0003-4136-4612; Sáfrán, György/0000-0003-3708-3551; Kuncser, Andrei/0000-0003-2841-5809}
}

@article{MTMT:33297776,
	title = {Nitrogen doped carbonaceous materials as platinum free cathode electrocatalysts for oxygen reduction reaction (ORR)},
	url = {https://m2.mtmt.hu/api/publication/33297776},
	author = {Ayyubov, Ilgar and Tálas, Emília and Berghian-Grosan, Camelia and Románszki, Loránd and Borbáth, Irina and Pászti, Zoltán and Szegedi, Ágnes and Mihály, Judith and Vulcu, Adriana and Tompos, András},
	doi = {10.1007/s11144-022-02331-6},
	journal-iso = {REACT KINET MECH CATAL},
	journal = {REACTION KINETICS MECHANISMS AND CATALYSIS},
	volume = {136},
	unique-id = {33297776},
	issn = {1878-5190},
	abstract = {Comparison of physicochemical properties and electrocatalytic behavior of different N-doped carbonaceous materials as potential catalysts for oxygen reduction reaction (ORR) was attended. Ball-milling of graphite with melamine and solvothermal treatment of graphite oxide, graphene nanoplatelets (GNP) with ammonia were used as preparation methods. Elemental analysis and N 2 physisorption measurements revealed the synthesis of N-doped materials with strongly different morphological parameters. Contact angle measurements proved that all three samples had good wettability properties. According to analysis of XRD data and Raman spectra a higher nitrogen concentration corresponded to a smaller size of crystallites of the N-doped carbonaceous material. Surface total N content determined by XPS and bulk N content assessed by elemental analysis were close, indicating homogenous inclusion of N in all samples. Rotating disc electrode tests showed that these N-doped materials weremuch less active in acidic medium than in an alkaline environment. Although the presence of in-plane N species is regarded to be advantageous for the ORR activity, no particular correlation was found in these systems with any type of N species. According to Koutecky–Levich analysis, both the N-containing carbonaceous materials and the reference Pt/C catalyst displayed a typical one-step, four-electron ORR route. Both ball-milled sample with high N-content but with low SSA and solvothermally synthesized N-GNP with high SSA but low N content showed significant ORR activity. It could be concluded that beside the total N content other parameters such as SSA, pore structure, structural defects, wettability were also essential for achieving high ORR activity.},
	year = {2023},
	eissn = {1878-5204},
	pages = {125-147}
}

@article{MTMT:32850810,
	title = {Design of electrocatalysts with reduced Pt content supported on mesoporous NiWO4 and NiWO4-graphene nanoplatelets composite for oxygen reduction and hydrogen oxidation in acidic medium},
	url = {https://m2.mtmt.hu/api/publication/32850810},
	author = {Somacescu, Simona and Osiceanu, Petre and Calderon Moreno, Jose Maria and Culita, Daniela C. and Neațu, Florentina and Trandafir, Mihaela M. and Neațu, Ștefan and Kuncser, Andrei and Szijjártó, Gábor and Tálas, Emília and Tompos, András and Borbáth, Irina and Florea, Mihaela},
	doi = {10.1016/j.ijhydene.2022.04.270},
	journal-iso = {INT J HYDROGEN ENERG},
	journal = {INTERNATIONAL JOURNAL OF HYDROGEN ENERGY},
	volume = {48},
	unique-id = {32850810},
	issn = {0360-3199},
	abstract = {Herein, a new direct synthesis route leading to a mesoporous NiWO4 with crystalline framework and NiWO4 - graphene nanoplatelets (GNP) composite is reported. Ni and W assembled into a mesoporous tungstate type of symmetry by co-precipitation synthesis route and its composite with GNP were used as supports for electrocatalysts, with reduced Pt content (8 wt.%), in oxygen reduction reaction (ORR) and hydrogen oxidation reaction (HOR) in acidic medium. A comprehensive assessment of the modifications related to the crystalline and porous structures, morphological aspects as well as the surface chemistry aiming to explain the electrochemical properties was performed. It was found that the presence of GNP during the synthesis process leads, mainly, to the enhanced growth of NiWO4 nanocrystallites, as well as induces changes in the surface chemistry. The electrochemical results show that the introduction of GNPs into the NiWO4 composite support leads to a significant improvement in the activity of the Pt electrocatalyst in ORR and HOR compared to both initial NiWO4 and Pt/NiWO4 samples, as well as mechanical mixtures of these catalysts with carbon. Mass activity for hydrogen oxidation, determined in a mixed kinetic-diffusion controlled region, obtained on the 8 wt.% Pt/NiWO4-GNP catalyst was significantly higher compared to the commercial 20 wt.% Pt/C Quintech catalyst. Our comprehensive structural and surface chemistry assessments indicate this composite material as a viable electrocatalyst for PEMFCs using a broader type of fuels. © 2022 Hydrogen Energy Publications LLC},
	keywords = {OXIDATION; OXYGEN; HYDROGEN; nickel compounds; Graphene; platinum; Surface chemistry; Electrolysis; Electrolytic reduction; ELECTROCATALYSTS; OXYGEN REDUCTION REACTION; Mesoporous materials; Tungsten compounds; Mesoporous; Hydrogen oxidation; Graphene nanoplatelets; Bifunctional electrocatalysts; hydrogen oxidation reaction; synthesis route; ]+ catalyst; Composite supported electrocatalysts; NiWO4; Composite supported electrocatalyst; Supported electrocatalysts},
	year = {2023},
	eissn = {1879-3487},
	pages = {6317-6335},
	orcid-numbers = {Florea, Mihaela/0000-0002-6612-6090}
}

@article{MTMT:32850797,
	title = {Electrocatalytic Properties of Mixed-Oxide-Containing Composite-Supported Platinum for Polymer Electrolyte Membrane (PEM) Fuel Cells},
	url = {https://m2.mtmt.hu/api/publication/32850797},
	author = {Ayyubov, Ilgar and Tálas, Emília and Salmanzade, Khirdakhanim and Kuncser, Andrei and Pászti, Zoltán and Neațu, Ștefan and Mirea, Anca G. and Florea, Mihaela and Tompos, András and Borbáth, Irina},
	doi = {10.3390/ma15103671},
	journal-iso = {MATERIALS},
	journal = {MATERIALS},
	volume = {15},
	unique-id = {32850797},
	year = {2022},
	eissn = {1996-1944},
	orcid-numbers = {Kuncser, Andrei/0000-0003-2841-5809; Neațu, Ștefan/0000-0002-2450-0291; Florea, Mihaela/0000-0002-6612-6090}
}

@article{MTMT:32550046,
	title = {Preparation of Pt electrocatalyst supported by novel, Ti(1−x)MoxO2-C type of composites containing multi-layer graphene},
	url = {https://m2.mtmt.hu/api/publication/32550046},
	author = {Ayyubov, Ilgar and Vulcu, Adriana and Berghian-Grosan, Camelia and Tálas, Emília and Borbáth, Irina and Sajó, István and Sáfrán, György and Mihály, Judith and Tompos, András},
	doi = {10.1007/s11144-021-02138-x},
	journal-iso = {REACT KINET MECH CATAL},
	journal = {REACTION KINETICS MECHANISMS AND CATALYSIS},
	volume = {135},
	unique-id = {32550046},
	issn = {1878-5190},
	abstract = {Ball milling is a relative simple and promising technique for preparation of inorganic oxide–carbon type of composites. Novel TiO2-C and Ti0.8Mo2O2-C type of composites containing multi-layer graphene were prepared by ball milling of graphite in order to get electrocatalyst supports for polymer electrolyte membrane fuel cells. Starting rutile TiO2 was obtained from P25 by heat treatment. Carbon-free Ti0.8Mo2O2 mixed oxide, prepared using our previously developed multistep sol–gel method, does not meet the requirements for materials of electrocatalyst support, therefore parent composites with Ti0.8Mo2O2/C = 75/25, 90/10 and 95/5 mass ratio were prepared using Black Pearls 2000. XRD study of parent composites proved that the oxide part existed in rutile phase which is prerequisite of the incorporation of oxophilic metals providing CO tolerance for the electrocatalyst. Ball milling of TiO2 or parent composites with graphite resulted in catalyst supports with enhanced carbon content and with appropriate specific surface areas. XRD and Raman spectroscopic measurements indicated the changes of graphite during the ball milling procedure while the oxide part remained intact. TEM images proved that platinum existed in the form of highly dispersed nanoparticles on the surface of both the Mo-free and of Mo-containing electrocatalyst. Electrocatalytic performance of the catalysts loaded with 20 wt% Pt was studied by cyclic voltammetry, COads-stripping voltammetry done before and after the 500-cycle stability test, as well as by the long-term stability test involving 10,000 polarization cycles. Enhanced CO tolerance and slightly lower stability comparing to Pt/TiO2-C was demonstrated for Pt/Ti0.8Mo2O2-C catalysts.},
	year = {2022},
	eissn = {1878-5204},
	pages = {49-69},
	orcid-numbers = {Sajó, István/0000-0002-1228-1407; Sáfrán, György/0000-0003-3708-3551}
}

@article{MTMT:32545585,
	title = {Effect of the reductive treatment on the state and electrocatalytic behavior of Pt in catalysts supported on Ti0.8Mo0.2O2-C composite},
	url = {https://m2.mtmt.hu/api/publication/32545585},
	author = {Maria Cristina, Silva Cisneros and Borbáth, Irina and Zelenka, K and Sajó, István and Sáfrán, György and Tompos, András and Pászti, Zoltán},
	doi = {10.1007/s11144-021-02131-4},
	journal-iso = {REACT KINET MECH CATAL},
	journal = {REACTION KINETICS MECHANISMS AND CATALYSIS},
	volume = {135},
	unique-id = {32545585},
	issn = {1878-5190},
	year = {2022},
	eissn = {1878-5204},
	pages = {29-47},
	orcid-numbers = {Sajó, István/0000-0002-1228-1407; Sáfrán, György/0000-0003-3708-3551}
}

@article{MTMT:32111014,
	title = {Recent progress on electrocatalysts and electrodes for portable fuel cells},
	url = {https://m2.mtmt.hu/api/publication/32111014},
	author = {Neatu, Stefan and Neatu, Florentina and Chirica, Maria-Iuliana and Borbáth, Irina and Tálas, Emília and Tompos, András and Somacescu, Simona and Osiceanu, Petre and Folgado, Antonia M and Martinez Chaparro, Antonio and Florea, Mihaela},
	doi = {10.1039/D1TA03644K},
	journal-iso = {J MATER CHEM A},
	journal = {JOURNAL OF MATERIALS CHEMISTRY A},
	volume = {9},
	unique-id = {32111014},
	issn = {2050-7488},
	year = {2021},
	eissn = {2050-7496},
	pages = {17065-17128}
}

@article{MTMT:31993635,
	title = {Investigation of Ti-Mo mixed oxide-carbon composite supported Pt electrocatalysts: Effect of the type of carbonaceous materials},
	url = {https://m2.mtmt.hu/api/publication/31993635},
	author = {Borbáth, Irina and Tálas, Emília and Pászti, Zoltán and Zelenka, K and Ayyubov, Ilgar and Salmanzade, K and Sajó, István and Sáfrán, György and Tompos, András},
	doi = {10.1016/j.apcata.2021.118155},
	journal-iso = {APPL CATAL A-GEN},
	journal = {APPLIED CATALYSIS A-GENERAL},
	volume = {620},
	unique-id = {31993635},
	issn = {0926-860X},
	year = {2021},
	eissn = {1873-3875},
	orcid-numbers = {Tálas, Emília/0000-0002-9401-2584; Sajó, István/0000-0002-1228-1407; Sáfrán, György/0000-0003-3708-3551}
}