@article{MTMT:34722932,
	title = {Structural Changes of Bioapatite during Heat Treatment},
	url = {https://m2.mtmt.hu/api/publication/34722932},
	author = {Dallos, Zsolt and Golle-Leidreiter, Philipp and Molnár, Zsombor and Kristály, Ferenc and Kovács Kis, Viktória and Dódony, István},
	doi = {10.1021/acs.cgd.3c01375},
	journal-iso = {CRYST GROWTH DES},
	journal = {CRYSTAL GROWTH & DESIGN},
	volume = {24},
	unique-id = {34722932},
	issn = {1528-7483},
	year = {2024},
	eissn = {1528-7505},
	pages = {2058-2063},
	orcid-numbers = {Dallos, Zsolt/0000-0001-9108-4366; Molnár, Zsombor/0000-0002-9836-3488; Kristály, Ferenc/0000-0002-0075-5994}
}

@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}
}

@article{MTMT:34403482,
	title = {Effect of Copper-Modification of g-C3N4 on the Visible-Light-Driven Photocatalytic Oxidation of Nitrophenols},
	url = {https://m2.mtmt.hu/api/publication/34403482},
	author = {Nguyen Xuan, Truong and Nguyen Thi, Dien and Tran Thuong, Quang and Nguyen Ngoc, Tue and Dang Quoc, Khanh and Molnár, Zsombor and Mukhtar, Shoaib and Szabóné Bárdos, Erzsébet and Horváth, Ottó},
	doi = {10.3390/molecules28237810},
	journal-iso = {MOLECULES},
	journal = {MOLECULES},
	volume = {28},
	unique-id = {34403482},
	issn = {1420-3049},
	abstract = {Graphitic carbon nitride (g-C3N4) has proved to be a promising heterogeneous photocatalyst in the visible range. It can be used, among others, for the oxidative conversion of environmentally harmful nitrophenols occurring in wastewater. However, its photocatalytic activity needs to be enhanced, which can be achieved by modification with various dopants. In our work, copper-modified g-C3N4 was prepared by ultrasonic impregnation of the pristine g-C3N4 synthesized from thiourea. The morphology, microstructure, and optical properties of the photocatalysts were characterized by XRD, FT-IR, DRS, SEM, XPS, and TEM. DRS analysis indicated a slight change in both the CB and the VB energies of Cu/g-C3N4 compared to those of g-C3N4. The efficiency of the photocatalysts prepared was tested by the degradation of nitrophenols. Copper modification caused a sevenfold increase in the rate of 4-nitrophenol degradation in the presence of H2O2 at pH = 3. This dramatic enhancement can be attributed to the synergistic effect of copper and H2O2 in this photocatalytic system. A minor Fenton reaction role was also detected. The reusability of the Cu/g-C3N4 catalyst was demonstrated through five cycles. Copper-modified g-C3N4 with H2O2 proved to be applicable for efficient visible-light-driven photocatalytic oxidative degradation of nitrophenols.},
	year = {2023},
	eissn = {1420-3049},
	orcid-numbers = {Nguyen Xuan, Truong/0000-0003-0201-7212; Molnár, Zsombor/0000-0002-9836-3488; Szabóné Bárdos, Erzsébet/0000-0002-2290-0240; Horváth, Ottó/0000-0002-5325-8430}
}

@mastersthesis{MTMT:34130643,
	title = {Kalcium-karbonát polimorfok heterogén nukleációja},
	url = {https://m2.mtmt.hu/api/publication/34130643},
	author = {Molnár, Zsombor},
	doi = {10.18136/PE.2023.841},
	unique-id = {34130643},
	year = {2023},
	orcid-numbers = {Molnár, Zsombor/0000-0002-9836-3488}
}

@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}
}

@CONFERENCE{MTMT:33828942,
	title = {Ikaite (CaCO3*6H2O) -> ACC (amorphous calcium carbonate) -> calcite transformation and its paleoclimatological implication},
	url = {https://m2.mtmt.hu/api/publication/33828942},
	author = {Lázár, Anett and Karlik, Máté and Molnár, Zsombor and Demény, Attila and Németh, Péter},
	booktitle = {EGU General Assembly 2023: Abstracts},
	doi = {10.5194/egusphere-egu23-1133},
	unique-id = {33828942},
	year = {2023},
	orcid-numbers = {Molnár, Zsombor/0000-0002-9836-3488; Demény, Attila/0000-0003-0522-9018; Németh, Péter/0000-0001-5592-5877}
}

@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}
}

@article{MTMT:33606758,
	title = {Insights into the amorphous calcium carbonate (ACC) → ikaite → calcite transformations},
	url = {https://m2.mtmt.hu/api/publication/33606758},
	author = {Lázár, Anett and Molnár, Zsombor and Demény, Attila and Kótai, László and Trif, László and Béres, Kende Attila and Bódis, Eszter and Bortel, Gábor and Aradi, László Előd and Karlik, Máté and Szabó, Máté Zoltán and Pekker, Áron and Németh, Gergely and Kamarás, Katalin and Garvie, L.A.J. and Németh, Péter},
	doi = {10.1039/d2ce01444k},
	journal-iso = {CRYSTENGCOMM},
	journal = {CRYSTENGCOMM},
	volume = {25},
	unique-id = {33606758},
	issn = {1466-8033},
	year = {2023},
	eissn = {1466-8033},
	pages = {738-750},
	orcid-numbers = {Molnár, Zsombor/0000-0002-9836-3488; Demény, Attila/0000-0003-0522-9018; Trif, László/0000-0002-3960-1829; Béres, Kende Attila/0000-0003-4257-0581; Aradi, László Előd/0000-0003-0276-3119; Kamarás, Katalin/0000-0002-0390-3331; Németh, Péter/0000-0001-5592-5877}
}