@article{MTMT:34738036,
	title = {Bevezetés a tematikus blokkhoz},
	url = {https://m2.mtmt.hu/api/publication/34738036},
	author = {Pósfai, Mihály},
	journal-iso = {FIZIKAI SZEMLE},
	journal = {FIZIKAI SZEMLE},
	volume = {74},
	unique-id = {34738036},
	issn = {0015-3257},
	year = {2024},
	pages = {38-38},
	orcid-numbers = {Pósfai, Mihály/0000-0001-9355-3533}
}

@article{MTMT:34499208,
	title = {Formation and properties of spindle-shaped aragonite mesocrystals from Mg-bearing solutions},
	url = {https://m2.mtmt.hu/api/publication/34499208},
	author = {Molnár, Zsombor and Pekker, Péter and Rečnik, Aleksander and Pósfai, Mihály},
	doi = {10.1039/D3NR04672A},
	journal-iso = {NANOSCALE},
	journal = {NANOSCALE},
	volume = {16},
	unique-id = {34499208},
	issn = {2040-3364},
	abstract = {Spindle-shaped aragonite mesocrystals form by the attachment of Mg-bearing amorphous calcium carbonate particles that convert to aragonite nanocrystals through dissolution-reprecipitation.},
	year = {2024},
	eissn = {2040-3372},
	pages = {2012-2021},
	orcid-numbers = {Molnár, Zsombor/0000-0002-9836-3488; Pekker, Péter/0000-0002-0463-0742; Pósfai, Mihály/0000-0001-9355-3533}
}

@{MTMT:34731769,
	title = {Low-temperature synthesis of graphene/Ag nanocomposite as a photo-catalyst for the degradation of organic pollutants in wastewater},
	url = {https://m2.mtmt.hu/api/publication/34731769},
	author = {UDDIN, IMRAN and Shoaib, Mukhtar and Molnár, Zsombor and Pósfai, Mihály},
	booktitle = {Műszaki Kémiai Napok 2023 Konferencia},
	unique-id = {34731769},
	abstract = {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.},
	year = {2023},
	pages = {44},
	orcid-numbers = {Molnár, Zsombor/0000-0002-9836-3488; Pósfai, Mihály/0000-0001-9355-3533}
}

@CONFERENCE{MTMT:34525833,
	title = {Environmental and climatic changes over the past 10 000 years inferred from geochemistry of Lake Balaton},
	url = {https://m2.mtmt.hu/api/publication/34525833},
	author = {Pálfi, Ivett and Pósfai, Mihály and Demény, Attila and Czuppon, György and Pekker, Péter and May, Zoltán and Visnovitz, Ferenc and Kristály, Ferenc and Veres, D and Arnoud, F and Szalai, Zoltán and Korponai, J and Molnár, M and Szabó, Z and Magyari, Enikő Katalin},
	booktitle = {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},
	unique-id = {34525833},
	year = {2023},
	pages = {38},
	orcid-numbers = {Pálfi, Ivett/0000-0001-9814-3410; Pósfai, Mihály/0000-0001-9355-3533; Demény, Attila/0000-0003-0522-9018; Czuppon, György/0000-0002-7231-6042; Pekker, Péter/0000-0002-0463-0742; Visnovitz, Ferenc/0000-0002-7040-0080; Kristály, Ferenc/0000-0002-0075-5994; Szalai, Zoltán/0000-0001-5267-411X; Magyari, Enikő Katalin/0000-0002-2844-8937}
}

@article{MTMT:34430397,
	title = {Carbon Capture and Storage: From Global Cycles to Global Solutions},
	url = {https://m2.mtmt.hu/api/publication/34430397},
	author = {Blichert-Toft, J. and Canfield, D. and Gleeson, S. and Pancost, R. and Pósfai, Mihály},
	doi = {10.7185/geochempersp.12.2},
	journal-iso = {GEOCHEM PERSPECT},
	journal = {GEOCHEMICAL PERSPECTIVES},
	volume = {12},
	unique-id = {34430397},
	issn = {2223-7755},
	abstract = {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.},
	keywords = {temperature effect; sea level change; Global warming; carbon cycle; Installation; Carbon storage; geological time; Weathering profile},
	year = {2023},
	eissn = {2224-2759},
	pages = {179-349},
	orcid-numbers = {Pósfai, Mihály/0000-0001-9355-3533}
}

@article{MTMT:34162019,
	title = {Exploring the host range for genetic transfer of magnetic organelle biosynthesis},
	url = {https://m2.mtmt.hu/api/publication/34162019},
	author = {Dziuba, Marina V. and Müller, Frank-Dietrich and Pósfai, Mihály and Schüler, Dirk},
	doi = {10.1038/s41565-023-01500-5},
	journal-iso = {NAT NANOTECHNOL},
	journal = {NATURE NANOTECHNOLOGY},
	volume = {2023},
	unique-id = {34162019},
	issn = {1748-3387},
	year = {2023},
	eissn = {1748-3395},
	orcid-numbers = {Pósfai, Mihály/0000-0001-9355-3533; Schüler, Dirk/0000-0002-2327-0762}
}

@article{MTMT:34014104,
	title = {Nanoscale hydrous silicate melt inclusions at the clinopyroxene-amphibole interface in a mantle xenolith from the Perșani Mountains Volcanic Field},
	url = {https://m2.mtmt.hu/api/publication/34014104},
	author = {Lange, Thomas Pieter and Pálos, Zsófia and Pósfai, Mihály and Berkesi, Márta and Pekker, Péter and Szabó, Ábel and Szabó, Csaba and Kovács, István János},
	doi = {10.1016/j.lithos.2023.107210},
	journal-iso = {LITHOS},
	journal = {LITHOS},
	volume = {454-455},
	unique-id = {34014104},
	issn = {0024-4937},
	year = {2023},
	eissn = {1872-6143},
	orcid-numbers = {Lange, Thomas Pieter/0000-0002-8709-9239; Pósfai, Mihály/0000-0001-9355-3533; Berkesi, Márta/0000-0003-4380-057X; Pekker, Péter/0000-0002-0463-0742; Szabó, Csaba/0000-0002-1580-6344; Kovács, István János/0000-0002-3488-3716}
}

@CONFERENCE{MTMT:33879103,
	title = {The roles of precursor (Mg)-ACC in the formation of aragonite},
	url = {https://m2.mtmt.hu/api/publication/33879103},
	author = {Molnár, Zsombor and Pekker, Péter and Pósfai, Mihály},
	booktitle = {Goldschmidt 2023 Conference: abstracts},
	unique-id = {33879103},
	abstract = {Amorphous calcium carbonate (ACC) is often referred to as a phase that can transform into either of the three anhydrous crystalline CaCO3 forms (calcite, aragonite and vaterite). Here, we examined the conditions that make ACC transform into aragonite. Even though aragonite is the stable anhydrous crystalline CaCO3 polymorph at high pressure (4–40 GPa), it is also widespread on Earth’s surface. Nevertheless, the mechanism of its formation and the roles of solid precursors (such as ACC) in the process have not been studied as extensively as in the case of calcite.
		
		We studied aragonite formation by synthesizing it under laboratory conditions, focusing on the two, environmentally most relevant factors that are known to enhance its formation: (i) the presence of dissolved Mg2+ ions and (ii) the temperature of the mother solution (up to 80 °C). We used different experimental approaches in the two cases, and studied the precipitated materials with various scanning transmission electron microscopy (STEM) techniques.
		
		In Mg-rich solutions the first solid product was Mg-bearing ACC that transformed into aragonite aggregates with a typical, spindle-like appearance. Each spindle was an aggregate of crystallographically oriented nanocrystals, and two or more spindles could form star-like assemblies, with their members in twin orientation. Whereas the remarkable hierarchical structure suggested a growth mechanism by nanoparticle attachment, chemical differences observed between Mg-bearing ACC and aragonite indicated that the process must have involved dissolution and re-precipitation (DRP) as well.
		
		At elevated temperature ACC particles formed in the highly supersaturated (Mg-free) solutions, and their electron diffraction analysis suggested a trend of structural change with increasing temperature. The increasing temperature accelerated the transformation of ACC into crystalline forms (both calcite and aragonite), with aragonite formation favored at 80 °C. Morphological features suggested that the ACC could transform into either calcite or aragonite in solid state (preserving the globular shape of ACC), while simultaneously DRP produced aragonite crystals with aggregate or needle-like appearance. Thus, aragonite formation from ACC involved particle aggregation coupled with DRP in Mg-rich solutions, and solid-state transformation coupled with DRP at elevated temperatures. [1]
		
		[1] Support from NKFIH under grants RRF-2.3.1-21-2022-00014 and SNN-139585 is acknowledged.},
	year = {2023},
	orcid-numbers = {Molnár, Zsombor/0000-0002-9836-3488; Pekker, Péter/0000-0002-0463-0742; Pósfai, Mihály/0000-0001-9355-3533}
}

@article{MTMT:33741775,
	title = {Nanoscale Pathway of Modern Dolomite Formation in a Shallow, Alkaline Lake},
	url = {https://m2.mtmt.hu/api/publication/33741775},
	author = {Meister, P and Frisia, S and Dódony, István and Pekker, Péter and Molnár, Zsombor and Neuhuber, S and Gier, S and Kovács, Ivett and Demény, Attila and Pósfai, Mihály},
	doi = {10.1021/acs.cgd.2c01393},
	journal-iso = {CRYST GROWTH DES},
	journal = {CRYSTAL GROWTH & DESIGN},
	volume = {23},
	unique-id = {33741775},
	issn = {1528-7483},
	year = {2023},
	eissn = {1528-7505},
	pages = {3202-3212},
	orcid-numbers = {Meister, P/0000-0003-3623-6456; Pekker, Péter/0000-0002-0463-0742; Molnár, Zsombor/0000-0002-9836-3488; Kovács, Ivett/0000-0001-7015-7909; Demény, Attila/0000-0003-0522-9018; Pósfai, Mihály/0000-0001-9355-3533}
}

@article{MTMT:33628972,
	title = {Transformation of amorphous calcium carbonate in the presence of magnesium, phosphate, and mineral surfaces},
	url = {https://m2.mtmt.hu/api/publication/33628972},
	author = {Molnár, Zsombor and Dódony, István and Pósfai, Mihály},
	doi = {10.1016/j.gca.2023.01.028},
	journal-iso = {GEOCHIM COSMOCHIM AC},
	journal = {GEOCHIMICA ET COSMOCHIMICA ACTA},
	volume = {345},
	unique-id = {33628972},
	issn = {0016-7037},
	year = {2023},
	eissn = {1872-9533},
	pages = {90-101},
	orcid-numbers = {Molnár, Zsombor/0000-0002-9836-3488; Pósfai, Mihály/0000-0001-9355-3533}
}