TY - JOUR AU - Nagy, Lajos AU - Üneri, Haymana Serra AU - Kordován, Marcell Árpád AU - Nagy, Tibor AU - Kuki, Ákos AU - Nyul, Dávid AU - Pál, Petra AU - Erdélyi, Zoltán AU - Zsuga, Miklós AU - Kéki, Sándor TI - Organic Solvent-Based Li–Air Batteries with Cotton and Charcoal Cathode JF - JOURNAL OF THE ELECTROCHEMICAL SOCIETY J2 - J ELECTROCHEM SOC VL - 171 PY - 2024 IS - 4 SN - 0013-4651 DO - 10.1149/1945-7111/ad3857 UR - https://m2.mtmt.hu/api/publication/34802521 ID - 34802521 AB - We report on the construction and investigation of Li–air batteries consisting of a charcoal cathode and cotton texture soaked with different organic solvents containing a lithium triflate (LiOTf) electrolyte. Charcoal was found to be an appropriate cathode for Li–air batteries. Furthermore, cycling tests showed stable operation at over 800 cycles when dimethyl sulfoxide (DMSO) and diethylene glycol dimethyl ether (DEGME) were used as solvents, whereas low electrochemical stability was observed when propylene carbonate was used. The charging, discharging, and long-term discharging steps were mathematically modeled. Electrochemical impedance spectroscopy showed Gerischer impedance, suggesting intensive oxygen transport at the surface of the charcoal cathode. Diffusion, charge transfer, and solid electrolyte interphase processes were identified using distribution of relaxation time analysis. In the polypropylene (PP) membrane soaked with LiOTf in DEGME, three different states of Li ions were identified by 7 Li-triple-quantum time proportional phase increment nuclear magnetic resonance measurements. On the basis of the latter results, a mechanism was suggested for Li-ion transport inside the PP membrane. The activity of the charcoal cathode was confirmed by Raman and cyclic voltammetry measurements. LA - English DB - MTMT ER - TY - JOUR AU - Ecsédi, Bertold AU - Forgács, Attila AU - Balogh, Zoltán AU - Fábián, István AU - Kalmár, József TI - Hydration and wetting mechanism of borosilicate – Polyvinyl alcohol (PVA) hybrid aerogels of potential bioactivity JF - JOURNAL OF MOLECULAR LIQUIDS J2 - J MOL LIQ VL - 401 PY - 2024 PG - 8 SN - 0167-7322 DO - 10.1016/j.molliq.2024.124605 UR - https://m2.mtmt.hu/api/publication/34763386 ID - 34763386 LA - English DB - MTMT ER - TY - JOUR AU - Nagy, Tibor AU - Róth, Gergő AU - Kuki, Ákos AU - Pardi-Tóth, Veronika Csilla AU - Nyul, Dávid AU - Kyzy, Zuura Kaldybek AU - Palacios, Isaac Alexander Iglesias AU - Benedek, Máté AU - Nagy, Lajos AU - Zsuga, Miklós AU - Kéki, Sándor TI - The triumvirate of effective and rapid synthesis, analysis, and artificial intelligence to explore the structure-property relationship of copolymers JF - GIANT J2 - GIANT VL - 17 PY - 2024 PG - 8 SN - 2666-5425 DO - 10.1016/j.giant.2024.100248 UR - https://m2.mtmt.hu/api/publication/34744438 ID - 34744438 AB - Understanding the structure-property relationship is of paramount importance for tailoring copolymers for specific applications. Poly(N-acryloylmorpholine)-block-poly(N-isopropylacrylamide) (PNAM-b-PNIPAM) diblock copolymers were synthesized by reversible addition?fragmentation chain transfer (RAFT) polymerization with varying Mn and composition, providing the basis for deducing structure-property relationships. The chemical structure of the copolymers was analyzed by mass spectrometry (MS). A novel and efficient mass spectrum processing methodology was developed for the detailed analysis of polymers/copolymers that greatly expands the upper mass limit of the time-of-flight (TOF) analyzers in the linear mode up to 20,000 Da. Our method "makes visible" the mass peaks of the individual copolymer species and their isotopologues providing effective and fast automatized analysis. The self-assembly property of the thermoresponsive PNAM-b-PNIPAM diblocks in aqueous solutions was investigated by dynamic light scattering (DLS) experiments, and quantified by determining the incipient temperature of the phase transition. For rapid evaluation, an artificial neural network (ANN) was created to explore the hidden relationships between the structural information obtained by our novel mass analysis method and the properties as well as to predict the self-assembly behavior of the copolymers. LA - English DB - MTMT ER - TY - JOUR AU - Balogh, Zoltán AU - Kalmár, József AU - Gommes, Cedric J. TI - Wetting of alginate aerogels, from mesoporous solids to hydrogels: a small-angle scattering analysis JF - JOURNAL OF APPLIED CRYSTALLOGRAPHY J2 - J APPL CRYSTALLOGR VL - 57 PY - 2024 IS - 2 SP - 369 EP - 379 PG - 11 SN - 0021-8898 DO - 10.1107/S1600576724001705 UR - https://m2.mtmt.hu/api/publication/34655160 ID - 34655160 N1 - Accepted on 20-Febr-2024. Published on-line on 21-March-2024. LA - English DB - MTMT ER - TY - JOUR AU - Duong, Thoa AU - Vivero-Lopez, Maria AU - Ardao, Inés AU - Alvarez-Lorenzo, Carmen AU - Forgács, Attila AU - Kalmár, József AU - García-González, Carlos A. TI - Alginate aerogels by spray gelation for enhanced pulmonary delivery and solubilization of beclomethasone dipropionate JF - CHEMICAL ENGINEERING JOURNAL J2 - CHEM ENG J VL - 485 PY - 2024 PG - 15 SN - 1385-8947 DO - 10.1016/j.cej.2024.149849 UR - https://m2.mtmt.hu/api/publication/34629003 ID - 34629003 N1 - Accepted on 18-February-2024. Published online on 20-February-2024. LA - English DB - MTMT ER - TY - JOUR AU - Papp, István AU - Vajda, Nóra AU - Bokori, Edit AU - Molnár, Zsuzsa TI - Determination of 93Zr, 237Np and Th radionuclides in radioactive waste and mineral samples: extension of the method for determination of actinides JF - JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY- LETTERS J2 - J RADIOANAL NUCL CH LE (1984-1996) PY - 2024 SN - 0236-5731 DO - 10.1007/s10967-023-09350-0 UR - https://m2.mtmt.hu/api/publication/34583653 ID - 34583653 AB - A novel method has been developed for the simultaneous determination of difficult-to-measure (DTM) nuclides 93 Zr, 237 Np, 232 Th, 230 Th and 228 Th using a DGA resin ® (containing N,N,N′,N′-tetra- n -octyl-diglycolamide) column for simultaneous separation of Zr and actinides followed by purification of Zr, Np and Th on a TEVA resin ® (containing Aliquat 336) column. Samples are destroyed by fusion with sodium hydroxide or by acid destruction using HNO 3 , HCl and HF. Pre-concentration procedure tailored to the extraction chromatography is based on co-precipitation of Zr and actinides and removal of alumina, silica, iron and calcium. The concentrations of 93 Zr, 237 Np and Th nuclides are determined by ICP-MS and α spectrometry, respectively. High chemical recoveries (≥ 73%) and separation factors were obtained for Zr, Np and Th both in evaporation concentrates of an NPP and various samples of mineral origin such as soil and concrete. The procedure can be easily combined with the simultaneous separation of other actinides (Pu, Am, U) using the same DGA column that has been described in our previous papers (Cassette et al. in Appl Radiat Isot 68:122–130, 2010 and Groska et al. in J Radioanal Nucl Chem 309(3):1145–1158, 2016). LA - English DB - MTMT ER - TY - JOUR AU - Balogh, Zoltán AU - Len, Adél AU - Baksa, Viktória AU - Krajnc, Andraž AU - Herman, Petra AU - Szemán-Nagy, Gábor AU - Czigány, Zsolt AU - Fábián, István AU - Kalmár, József AU - Dudás, Zoltán Imre TI - Nanoscale structural characteristics and in vitro bioactivity of borosilicate – polyvinyl alcohol (PVA) hybrid aerogels for bone regeneration JF - ACS APPLIED NANO MATERIALS J2 - ACS APPL NANO MATER VL - 7 PY - 2024 IS - 4 SP - 4092 EP - 4102 PG - 11 SN - 2574-0970 DO - 10.1021/acsanm.3c05668 UR - https://m2.mtmt.hu/api/publication/34538335 ID - 34538335 LA - English DB - MTMT ER - TY - JOUR AU - Sajtos, Zsófi AU - Ragyák, Ágota AU - Hódi, Fruzsina AU - Szigeti, Viktória AU - Bellér, Gábor AU - Baranyai, Edina TI - Hydroxymethylfurfural content of old honey samples – Does the sticky treat really last forever? JF - LWT-FOOD SCIENCE AND TECHNOLOGY J2 - LWT-FOOD SCI TECHNOL PY - 2024 SN - 0023-6438 DO - 10.1016/j.lwt.2024.115781 UR - https://m2.mtmt.hu/api/publication/34523622 ID - 34523622 N1 - In Press, Journal Pre-proof LA - English DB - MTMT ER - TY - JOUR AU - Bonczidai-Kelemen, Dóra AU - Tóth, Klaudia AU - Fábián, István AU - Lihi, Norbert TI - The role of the terminal cysteine moiety in a metallopeptide mimicking the active site of the NiSOD enzyme JF - JOURNAL OF THE CHEMICAL SOCIETY-DALTON TRANSACTIONS J2 - J CHEM SOC DALTON TRANS VL - 53 PY - 2024 IS - 4 SP - 1648 EP - 1656 PG - 9 SN - 1472-7773 DO - 10.1039/D3DT03638C UR - https://m2.mtmt.hu/api/publication/34433135 ID - 34433135 N1 - HUN-REN-UD Mechanisms of Complex Homogeneous and Heterogeneous Chemical Reactions Research Group, Department of Inorganic and Analytical Chemistry, Faculty of Science and Technology, University of Debrecen, Debrecen, H-4032, Hungary Doctoral School of Chemistry, University of Debrecen, Debrecen, H-4032, Hungary Export Date: 16 January 2024 CODEN: DTARA Correspondence Address: Lihi, N.; HUN-REN-UD Mechanisms of Complex Homogeneous and Heterogeneous Chemical Reactions Research Group, Hungary; email: lihi.norbert@science.unideb.hu AB - Superoxide dismutase enzymes (SOD) are pivotal in regulating oxidative stress. In order to model Ni containing SOD enzymes, the results of thermodynamic, spectroscopic and SOD activity studies on the complexes... LA - English DB - MTMT ER - TY - JOUR AU - Guo, Xin AU - Zhang, Lei AU - Hu, Jie-Sheng AU - Szilágyi , Balázs AU - Yu, Meng AU - Chen, Shizhen AU - Tircsó, Gyula AU - Zhou, Xin AU - Tao, Jun TI - Improving the Potential of ParaCEST through Magnetic-coupling Induced Line Sharpening JF - CHEMICAL SCIENCE J2 - CHEM SCI VL - 14 PY - 2023 IS - 48 SP - 14157 EP - 14165 PG - 9 SN - 2041-6520 DO - 10.1039/D3SC04770A UR - https://m2.mtmt.hu/api/publication/34398343 ID - 34398343 AB - Magnetic coupling between paramagnetic centers is a crucial phenomenon in the design of efficient MRI contrast agents. In this study, we investigate the paraCEST properties and magnetic coupling effects of... LA - English DB - MTMT ER -