TY - JOUR AU - Gubieda, Alicia G. AU - Gandarias, Lucía AU - Pósfai, Mihály AU - Pattammattel, Ajith AU - Fdez-Gubieda, M. Luisa AU - Abad-Díaz-de-Cerio, Ana AU - García-Prieto, Ana TI - Temporal and spatial resolution of magnetosome degradation at the subcellular level in a 3D lung carcinoma model JF - JOURNAL OF NANOBIOTECHNOLOGY J2 - J NANOBIOTECHNOL VL - 22 PY - 2024 IS - 1 SN - 1477-3155 DO - 10.1186/s12951-024-02788-8 UR - https://m2.mtmt.hu/api/publication/35218689 ID - 35218689 LA - English DB - MTMT ER - TY - JOUR AU - UDDIN, IMRAN AU - MUKHTAR, SHOAIB AU - Horváth, Ottó AU - Pósfai, Mihály TI - Room-temperature synthesis of rGO/Ag nanocomposite as a photocatalyst for the degradation of organic pollutants in wastewater JF - MATERIALIA J2 - MATERIALIA VL - 36 PY - 2024 SP - 102179 SN - 2589-1529 DO - 10.1016/j.mtla.2024.102179 UR - https://m2.mtmt.hu/api/publication/35141127 ID - 35141127 N1 - cited By 0 LA - English DB - MTMT ER - TY - CHAP AU - Pósfai, Mihály AU - Molnár, Zsombor AU - Nyirő-Kósa, Ilona AU - Rácz, Kornél AU - Pekker, Péter AU - Istvánovics, Vera ED - Staicu, Lucian C. ED - Barton, Larry L. TI - Carbonate Mineral Formation in the Vicinity of Blooming Algae in a Shallow Lake T2 - Geomicrobiology: Natural and Anthropogenic Settings PB - Springer Nature Switzerland CY - Cham SN - 9783031543081 PY - 2024 SP - 261 EP - 280 PG - 20 DO - 10.1007/978-3-031-54306-7_13 UR - https://m2.mtmt.hu/api/publication/34890841 ID - 34890841 LA - English DB - MTMT ER - TY - JOUR AU - Pósfai, Mihály TI - Bevezetés a tematikus blokkhoz JF - FIZIKAI SZEMLE J2 - FIZIKAI SZEMLE VL - 74 PY - 2024 IS - 2 SP - 38 EP - 38 PG - 1 SN - 0015-3257 UR - https://m2.mtmt.hu/api/publication/34738036 ID - 34738036 LA - Hungarian DB - MTMT ER - TY - JOUR AU - Molnár, Zsombor AU - Pekker, Péter AU - Rečnik, Aleksander AU - Pósfai, Mihály TI - Formation and properties of spindle-shaped aragonite mesocrystals from Mg-bearing solutions JF - NANOSCALE J2 - NANOSCALE VL - 16 PY - 2024 IS - 4 SP - 2012 EP - 2021 PG - 10 SN - 2040-3364 DO - 10.1039/D3NR04672A UR - https://m2.mtmt.hu/api/publication/34499208 ID - 34499208 AB - Spindle-shaped aragonite mesocrystals form by the attachment of Mg-bearing amorphous calcium carbonate particles that convert to aragonite nanocrystals through dissolution-reprecipitation. LA - English DB - MTMT ER - TY - JOUR AU - Dziuba, Marina V. AU - Müller, Frank-Dietrich AU - Pósfai, Mihály AU - Schüler, Dirk TI - Exploring the host range for genetic transfer of magnetic organelle biosynthesis JF - NATURE NANOTECHNOLOGY J2 - NAT NANOTECHNOL VL - 19 PY - 2024 IS - 1 SP - 115 EP - 123 PG - 9 SN - 1748-3387 DO - 10.1038/s41565-023-01500-5 UR - https://m2.mtmt.hu/api/publication/34162019 ID - 34162019 LA - English DB - MTMT ER - TY - GEN AU - Blichert-Toft, Janne AU - Canfield, Don AU - Gleeson, Sarach AU - Pancost, Richard AU - Pósfai, Mihály TI - Carbon Capture and Storage: From Global Cycles to Global Solutions VL - 12 PY - 2023 SP - 179 EP - 349 PG - 171 DO - 10.7185/geochempersp.12.2 UR - https://m2.mtmt.hu/api/publication/35293492 ID - 35293492 N1 - cited By 3 LA - English DB - MTMT ER - TY - CHAP AU - UDDIN, IMRAN AU - MUKHTAR, SHOAIB AU - Molnár, Zsombor AU - Pósfai, Mihály TI - Low-temperature synthesis of graphene/Ag nanocomposite as a photo-catalyst for the degradation of organic pollutants in wastewater T2 - Műszaki Kémiai Napok 2023 Konferencia PB - Pannon Egyetem CY - Veszprém SN - 9789633962565 PY - 2023 SP - 44 UR - https://m2.mtmt.hu/api/publication/34731769 ID - 34731769 AB - We prepared a composite of graphene (Gr) and silver (Ag) nanoparticles by using chemically exfoliated graphene as the base matrix, and biosynthesized Ag nanoparticles. TEM micrographs show that Gr has a 2D delaminated layered structure with a sheet-like morphology, with a moderate concentration of isometric Ag NPs well dispersed over the basal planes of the Gr nanosheet. UV-visible absorption spectroscopy reveals a hump around 265 nm, which corresponds to π-π* electron resonance transitions owing to aromatic sp2 hybridized C-C bonds in graphene sheets, and a peak at 401 nm, which is attributed to Ag NPs. The photocatalytic potential of Gr/Ag nanocomposites was studied using the degradation of organic dyes (methylene blue, 4-nitrophenol, and cumarin) as models of water pollutants. The experiments show that the methylene blue degradation efficacy of the Gr/Ag nanocomposite catalyst after 2 hours is about 97% and 90% using UV and visible light irradiation, respectively. Furthermore, the Gr/Ag nanocomposite showed significant degradation activity toward 4-nitrophenol, and cumarin dye. This study suggests the nanocomposite synthesized at low temperatures can be used as an efficient adaptable photocatalyst for the photodegradation of organic dyes in industrial wastewater. LA - English DB - MTMT ER - TY - CONF AU - Pálfi, Ivett AU - Pósfai, Mihály AU - Demény, Attila AU - Czuppon, György AU - Pekker, Péter AU - May, Zoltán AU - Visnovitz, Ferenc AU - Kristály, Ferenc AU - Veres, D AU - Arnoud, F AU - Szalai, Zoltán AU - Korponai, J AU - Molnár, M AU - Szabó, Z AU - Magyari, Enikő Katalin ED - Kovács, B ED - Virthné Kemes, K TI - Environmental and climatic changes over the past 10 000 years inferred from geochemistry of Lake Balaton T2 - Víz- és szennyvízkezelés az iparban (VSZI '23) : IX. Soós Ernő Nemzetközi Tudományos Konferencia = Water and wastewater treatment in the industry 2023 : IX. Soós Ernő International Scientific Conference PB - Soós Ernő Kutató-fejlesztő Központ C1 - Nagykanizsa PY - 2023 SP - 38 UR - https://m2.mtmt.hu/api/publication/34525833 ID - 34525833 N1 - Poszter LA - English DB - MTMT ER - TY - JOUR AU - Blichert-Toft, J. AU - Canfield, D. AU - Gleeson, S. AU - Pancost, R. AU - Pósfai, Mihály TI - Carbon Capture and Storage: From Global Cycles to Global Solutions JF - GEOCHEMICAL PERSPECTIVES J2 - GEOCHEM PERSPECT VL - 12 PY - 2023 IS - 2 SP - 179 EP - 349 PG - 171 SN - 2223-7755 DO - 10.7185/geochempersp.12.2 UR - https://m2.mtmt.hu/api/publication/34430397 ID - 34430397 N1 - Export Date: 12 December 2023; Cited By: 0 AB - Anthropogenic carbon emissions have overwhelmed the natural carbon cycle, leading to a dramatic increase in atmospheric CO2 concentration. The rate of this increase may be unprecedented in Earth's history and is leading to a substantial increase in global temperatures, ocean acidification, sea level rise and potentially human health challenges. In this Geochemical Perspectives we review the natural carbon cycle and its link to global climate. Notably, as directly observed by field observations summarised in this volume, there is a natural negative feedback loop between increasing global temperature, continental weathering rates, and CO2 that has tended to limit Earth climate changes over geological time scales. Due to the rapid increase in atmospheric carbon concentrations, global average temperatures have increased by more than 1.2 oC since the start of the industrial revolution. One way to slow or even arrest this increasing global average temperature is through Carbon Capture and Storage (CCS). Carbon dioxide can be captured either from large industrial point sources or directly from the atmosphere. Taking account of the natural carbon cycle, the most secure approach to storing captured CO2 is by reacting it with mafic or ultramafic rocks to form stable carbonate minerals, a process referred to as "mineral carbonation". Although mineral carbonation can occur and be accelerated at the Earth's surface, due to the required scale and required time frames it is most effective in the subsurface. This subsurface mineralisation approach was developed into an industrial scale process through an academic-industrial collaboration called CarbFix. The history of CarbFix, from its beginnings as a concept through its installation as an industrial process is presented in detail. This Geochemical Perspectives concludes with an assessment of the future of subsurface mineralisation as a means to help address the global warming challenge, as well as a detailed list of potential research directions that need to be addressed to further upscale and optimise this carbon storage approach. © 2023 Associacao Portuguesa de Estudos sobre as Mulheres. All rights reserved. LA - English DB - MTMT ER -