TY - JOUR AU - Mannazhi, Manu AU - Bergqvist, Saga AU - Török, Sandra AU - Madsen, Daniel AU - Lukács (Tóth), Pál AU - Le, Kim Cuong AU - Bengtsson, Per-Erik TI - Strongly reduced optical absorption efficiency of soot with addition of potassium chloride in sooting premixed flames JF - PROCEEDINGS OF THE COMBUSTION INSTITUTE J2 - P COMBUST INST VL - 39 PY - 2023 IS - 1 SP - 867 EP - 876 PG - 10 SN - 1540-7489 DO - 10.1016/j.proci.2022.07.143 UR - https://m2.mtmt.hu/api/publication/34094484 ID - 34094484 LA - English DB - MTMT ER - TY - JOUR AU - Liu, Ye AU - Zhang, Xuyang AU - Lukács (Tóth), Pál AU - Zhang, Wei AU - Lyu, Gang AU - Li, Yunqiang AU - Song, Chonglin TI - The role of volatile organic compounds in the oxidation-driven fragmentation of soot particles JF - PROCEEDINGS OF THE COMBUSTION INSTITUTE J2 - P COMBUST INST VL - 39 PY - 2023 IS - 1 SP - 1079 EP - 1088 PG - 10 SN - 1540-7489 DO - 10.1016/j.proci.2022.07.198 UR - https://m2.mtmt.hu/api/publication/34092437 ID - 34092437 LA - English DB - MTMT ER - TY - JOUR AU - Udayakumar, Mahitha AU - Lukács (Tóth), Pál AU - Wiinikka, Henrik AU - Malhotra, Jaskaran Singh AU - Likozar, Blaz AU - Gyergyek, Saso AU - Leskó, Anett Katalin AU - Thangaraj, Ravikumar AU - Németh, Zoltán TI - Hierarchical porous carbon foam electrodes fabricated from waste polyurethane elastomer template for electric double-layer capacitors JF - SCIENTIFIC REPORTS J2 - SCI REP VL - 12 PY - 2022 IS - 1 PG - 13 SN - 2045-2322 DO - 10.1038/s41598-022-16006-8 UR - https://m2.mtmt.hu/api/publication/33011026 ID - 33011026 AB - Plastic waste has become a major global environmental concern. The utilization of solid waste-derived porous carbon for energy storage has received widespread attention in recent times. Herein, we report the comparison of electrochemical performance of porous carbon foams (CFs) produced from waste polyurethane (PU) elastomer templates via two different activation pathways. Electric double-layer capacitors (EDLCs) fabricated from the carbon foam exhibited a gravimetric capacitance of 74.4 F/g at 0.1 A/g. High packing density due to the presence of carbon spheres in the hierarchical structure offered excellent volumetric capacitance of 134.7 F/cm3 at 0.1 A/g. Besides, the CF-based EDLCs exhibited Coulombic efficiency close to 100% and showed stable cyclic performance for 5000 charge–discharge cycles with good capacitance retention of 97.7% at 3 A/g. Low equivalent series resistance (1.05 Ω) and charge transfer resistance (0.23 Ω) due to the extensive presence of hydroxyl functional groups contributed to attaining high power (48.89 kW/kg). Based on the preferred properties such as high specific surface area, hierarchical pore structure, surface functionalities, low metallic impurities, high conductivity and desirable capacitive behaviour, the CF prepared from waste PU elastomers have shown potential to be adopted as electrodes in EDLCs. LA - English DB - MTMT ER - TY - JOUR AU - Yang, Wenbin AU - Lukács (Tóth), Pál AU - Song, Yu AU - Li, Wu TI - Structural alterations of aromatic fringes by HRTEM for Xinjing Vitrinite-rich anthracite. Impact of low-temperature pyrolysis TS - Impact of low-temperature pyrolysis JF - THERMOCHIMICA ACTA J2 - THERMOCHIM ACTA VL - 713 PY - 2022 PG - 13 SN - 0040-6031 DO - 10.1016/j.tca.2022.179230 UR - https://m2.mtmt.hu/api/publication/32854128 ID - 32854128 LA - English DB - MTMT ER - TY - JOUR AU - Chauhan, Tanya AU - Udayakumar, Mahitha AU - Shehab, Mohammed AU - Kristály, Ferenc AU - Leskó, Anett Katalin AU - Ek, Martin AU - Wahlqvist, David AU - Lukács (Tóth), Pál AU - Hernádi, Klára AU - Németh, Zoltán TI - Synthesis, characterization, and challenges faced during the preparation of zirconium pillared clays JF - ARABIAN JOURNAL OF CHEMISTRY J2 - ARAB J CHEM VL - 15 PY - 2022 IS - 4 PG - 10 SN - 1878-5352 DO - 10.1016/j.arabjc.2022.103706 UR - https://m2.mtmt.hu/api/publication/32643354 ID - 32643354 LA - English DB - MTMT ER - TY - JOUR AU - Báthory, Csongor AU - Dobó, Zsolt AU - Garami, Attila AU - Palotás, Árpád Bence AU - Lukács (Tóth), Pál TI - Low-cost monitoring of atmospheric PM—development and testing JF - JOURNAL OF ENVIRONMENTAL MANAGEMENT J2 - J ENVIRON MANAGE VL - 304 PY - 2022 PG - 8 SN - 0301-4797 DO - 10.1016/j.jenvman.2021.114158 UR - https://m2.mtmt.hu/api/publication/32600944 ID - 32600944 LA - English DB - MTMT ER - TY - JOUR AU - Fooladgar, Ehsan AU - Brackmann, Christian AU - Mannazhi, Manu AU - Ögren, Yngve AU - Bengtsson, Per-Erik AU - Wiinikka, Henrik AU - Lukács (Tóth), Pál TI - CFD modeling of pyrolysis oil combustion using finite rate chemistry JF - FUEL J2 - FUEL VL - 299 PY - 2021 PG - 10 SN - 0016-2361 DO - 10.1016/j.fuel.2021.120856 UR - https://m2.mtmt.hu/api/publication/32298806 ID - 32298806 LA - English DB - MTMT ER - TY - JOUR AU - Lukács (Tóth), Pál TI - Nanostructure quantification of turbostratic carbon by HRTEM image analysis: State of the art, biases, sensitivity and best practices JF - CARBON J2 - CARBON VL - 178 PY - 2021 SP - 688 EP - 707 PG - 20 SN - 0008-6223 DO - 10.1016/j.carbon.2021.03.043 UR - https://m2.mtmt.hu/api/publication/32296391 ID - 32296391 LA - English DB - MTMT ER - TY - JOUR AU - Udayakumar, Mahitha AU - El Mrabate, Bilal AU - Koós, Tamás AU - Szemmelveiszné Hodvogner, Katalin AU - Kristály, Ferenc AU - Leskó, Máté Zsigmond AU - Filep, Ádám AU - Géber, Róbert AU - Schabikowski, Mateusz AU - Baumli, Péter AU - Lakatos, János AU - Lukács (Tóth), Pál AU - Németh, Zoltán TI - Synthesis of activated carbon foams with high specific surface area using polyurethane elastomer templates for effective removal of methylene blue JF - ARABIAN JOURNAL OF CHEMISTRY J2 - ARAB J CHEM VL - 14 PY - 2021 IS - 7 PG - 18 SN - 1878-5352 DO - 10.1016/j.arabjc.2021.103214 UR - https://m2.mtmt.hu/api/publication/32035878 ID - 32035878 AB - Carbon foams have gained significant attention due to their tuneable properties that enable a wide range of applications including catalysis, energy storage and wastewater treatment. Novel synthesis pathways enable novel applications via yielding complex, hierarchical material structure. In this work, activated carbon foams (ACFs) were produced from waste polyurethane elastomer templates using different synthesis pathways, including a novel one-step method. Uniquely, the produced foams exhibited complex structure and contained carbon microspheres. The ACFs were synthesized by impregnating the elastomers in an acidified sucrose solution followed by direct activation using CO2 at 1000 celcius. Different pyrolysis and activation conditions were investigated. The ACFs were characterized by a high specific surface area (SBET) of 2172 m(2)/g and an enhanced pore volume of 1.08 cm(3)/g. Computer tomography and morphological studies revealed an inhomogeneous porous structure and the presence of numerous carbon spheres of varying sizes embedded in the porous network of the three-dimensional carbon foam. X-ray diffraction (XRD) and Raman spectroscopy indicated that the obtained carbon foam was amorphous and of turbostratic structure. Moreover, the activation process enhanced the surface of the carbon foam, making it more hydrophilic via altering pore size distribution and introducing oxygen functional groups. In equilibrium, the adsorption of methylene blue on ACF followed the Langmuir isotherm model with a maximum adsorption capacity of 592 mg/g. Based on these results, the produced ACFs have potential applications as adsorbents, catalyst support and electrode material in energy storage systems. (C) 2021 The Author(s). Published by Elsevier B.V. on behalf of King Saud University. LA - English DB - MTMT ER - TY - JOUR AU - Wiinikka, Henrik AU - Hage, Fredrik S. AU - Ramasse, Quentin M. AU - Lukács (Tóth), Pál TI - Spatial distribution of metallic heteroatoms in soot nanostructure mapped by aberration-corrected STEM-EELS JF - CARBON J2 - CARBON VL - 173 PY - 2021 SP - 953 EP - 967 PG - 15 SN - 0008-6223 DO - 10.1016/j.carbon.2020.12.004 UR - https://m2.mtmt.hu/api/publication/31880273 ID - 31880273 LA - English DB - MTMT ER -