Dalton Transactions最新文献

{"title":"Elucidation of trans/cis-isomerization of cinnamate ligand on structural, spectroscopic and magnetic properties of cobalt(II) single-molecule magnets","authors":"Petr Halaš, Ivan Nemec, Erik Cizmar, Radovan Herchel","doi":"10.1039/d5dt01004g","DOIUrl":"https://doi.org/10.1039/d5dt01004g","url":null,"abstract":"Two new pseudo-octahedral Co(II) complexes 1 [Co(neo)2(trans-cin)]ClO4 and 2 [Co(neo)2(cis-cin)]ClO4 with trans and cis-cinnamic acid (Hcin) and neocuproine (neo) as ligands were prepared. Both complexes were characterized via single-crystal X-ray analysis, infrared spectroscopy, magnetic measurements, and EPR spectroscopy. DC magnetic susceptibility measurements revealed large axial magnetic anisotropy with axial zero-field splitting (ZFS) parameters D = 49.9 and 59.5 cm-1, and rhombicity E/D = 0.307 and 0.147 for 1 and 2, respectively. These results were in accordance with CASSCF/NEVPT2 calculations. AC magnetic data showed the presence of slow relaxation of magnetization for both compounds in the applied DC field. UV irradiation studies in solution show that complexes most likely undergo trans/cis photoisomerisation, which is, however, accompanied by side reactions and degradation. This was elucidated further utilizing DFT and TD-DFT calculations.","PeriodicalId":71,"journal":{"name":"Dalton Transactions","volume":"19 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2025-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144177241","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Mechanism of Nitrogenase: formation and release of the second NH3 and completion of the cycle","authors":"Ian Dance","doi":"10.1039/d5dt00658a","DOIUrl":"https://doi.org/10.1039/d5dt00658a","url":null,"abstract":"The enzyme nitrogenase catalyses the reaction N<small>₂</small> + 8e<small>^–</small> + 8H<small>⁺</small> = 2NH<small>₃</small> + H<small>₂</small>. Two prior papers in this series report a computed mechanism for the first and second phases of this catalysis. In the first phase H<small>₂</small> is formed, the H<small>₂</small>/N2 exchange occurs, N<small>₂</small> is captured in a concerted step forming the bound HNHH intermediate. The second phase breaks the N-N bond and converts this intermediate to bound NH plus the first NH<small>₃</small>, which dissociates. This third paper describes the final phase, which forms and then releases the second NH<small>₃</small>, and recovers the resting state. The mechanism is supported by density functional calculations with a 483+ atom quantum model of the active site, FeMo-co, and relevant surrounding amino acids and water. Calculated reaction trajectories and potential energy profiles generate five mechanistic pathways through this NH<small>₃</small> formation phase of the reaction. These pathways are evaluated with incorporation of entropic components and possible kinetic contributions by H atom tunneling, leading to the identification of the most favourable pathway for generation of NH<small>₃</small> and its subsequent dissociation. The steps regenerating the resting state and completing the mechanism cycle are described. All steps in this third and final phase of the mechanism are thermodynamically and kinetically feasible. Atom S2B of FeMo-co, whose retention during enzyme turnover is experimentally controversial, remains intact as a bridge between Fe2 and Fe6 and is an essential H transfer agent in the proposed mechanism. The architecture of the active site and its surrounds that promote the chemical choreography of nitrogenase in its performance space are outlined, and key features and principles of the proposed complete mechanism are summarised.","PeriodicalId":71,"journal":{"name":"Dalton Transactions","volume":"9 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2025-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144177194","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Hierarchical MOF-74/Cu2O/Cu composite derived from metal-organic frameworks toward degradation of 4-nitrophenol","authors":"Huan Chen, Junchao Ma, Wenxiu He, Yu Fu","doi":"10.1039/d5dt01162k","DOIUrl":"https://doi.org/10.1039/d5dt01162k","url":null,"abstract":"Metal-organic frameworks (MOFs) are recognized as advanced functional materials and ideal sacrificial templates due to their high specific area, abundant active sites, well-organized framework structure, and diverse morphologies. However, single component MOFs have been unable to meet the increasing application requirements. Herein, MOF-74 was used as a sacrificial template to synthesize a composite material MOF-74/Cu2O/Cu by calcinating hierarchical MOF-74 at 250 \"℃\" . A series of characterization techniques were employed to analyse the morphology, chemical components, and valence state of Cu in the MOF-74/Cu2O/Cu. The results revealed that the MOF-74/Cu2O/Cu inherits the hierarchical structure of parent MOF-74, which is constructed by nanosheets. Furthermore, particial Cu2+ nodes were transformed into Cu2O and Cu during the pyrolysis process of MOF-74, resulting in the formation of multicomponent composite material MOF-74/Cu2O/Cu. Considering its multicomponent and hierarchical structure, the catalytic performance of MOF-based composite material was evaluated for degrading 4-NP in the presence of NaBH4. Additionally, the presence of Cu2O and Cu was found to effectively shorten induction period for reducing 4-NP and enhance the catalytic rate. Moreover, MOF-74/Cu2O/Cu presented improved catalytic in the degradation of the dyes MO and MB. This study proposes a facile approach for synthesizing multiple phase composites based on the incompletely pyrolysis of MOFs, aiming to advance the development of functional materials.","PeriodicalId":71,"journal":{"name":"Dalton Transactions","volume":"25 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2025-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144177196","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Self-assembled multidyes-sensitized erbium single molecules for boosting energy transfer light-upconversion in solution.","authors":"Claude Piguet, Filipe Alves, Ines Taarit, Laure Guénée","doi":"10.1039/d5dt00438a","DOIUrl":"https://doi.org/10.1039/d5dt00438a","url":null,"abstract":"Efficient near-infrared (NIR) to visible (VIS) light-upconversion should combine large absorption coefficients NIR with massive quantum yields UC so that the overall brightness BUC = NIRUC is maximum. Relying on linear optics, several photons are collected by strongly absorbing dyes, stored on long-lived intermediate excited states and finally piled up using mechanisms of simple or double operator natures. The miniaturization to implement detectable linear light-upconversion in a single molecule is challenging because of the existence of the thermal vibrational bath which increases non-radiative relaxation and limits quantum yields to 10−9 ≤ UC ≤ 10−6. An acceptable brightness thus requires the connection of a maximum of cationic cyanine dyes around trivalent lanthanide luminophores. Taking advantage of the thermodynamic benefit brought by strict self-assembly processes, three cationic IR-780 dye could be arranged around a single Er(III) cation in the trinuclear [ZnErZn(L5)3]10+ triple-stranded helicate. NIR excitation at 801 nm in acetonitrile at room temperature induces light-upconversion via the energy transfer upconversion (ETU) mechanism. The final green Er(2H11/2,4S3/24I15/2) emission with UC = 3.610−8 shows a record brightness of BUC = 2.810−2 M−1cm−1 (Pexc = 25 Wcm−2) for a molecular-based upconversion process.","PeriodicalId":71,"journal":{"name":"Dalton Transactions","volume":"12 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2025-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144165636","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Reactive Main Group Metal Complexes of the Neutral NNNN Macrocycle, Me4TACD","authors":"Jun Okuda, Priyabrata Ghana, Louis J. Morris","doi":"10.1039/d4dt03357d","DOIUrl":"https://doi.org/10.1039/d4dt03357d","url":null,"abstract":"Currently, there is considerable interest in introducing molecularly defined main group metal compounds as precursors and model complexes of homogeneous catalysts for various bond cleavage and forming transformations. With a focus on the NNNN macrocyclic ligand Me4TACD (N,N’,N’’,N’’’-tetramethyl-1,4,7,10-tetraazacyclododecane), this review summarizes the versatility of the ligand Me4TACD for the stabilization of reactive main group s- and p-block (group 1, 2, 12-14) metals. Metal hydrides, hydrocarbyls and silyls are often monomeric and catalyze alkene hydrofunctionalisations. In contrast to the rich coordination chemistry of d- and f-block transition metals using a plethora of ligands, main group metals still leave room for new reactivities, aligning with the current efforts to develop a systematic understanding in s- and p-block metal-ligand combinations.","PeriodicalId":71,"journal":{"name":"Dalton Transactions","volume":"71 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2025-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144165638","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Nickel complexes based on amidine for applications in gas-assisted methods and photocatalysis","authors":"A. Butrymowicz-Kubiak, A. Topolski, T. M. Muzioł, I. B. Szymańska","doi":"10.1039/d5dt00550g","DOIUrl":"https://doi.org/10.1039/d5dt00550g","url":null,"abstract":"The new nickel(&lt;small&gt;II&lt;/small&gt;) complexes were investigated as potential precursors for gas-assisted methods: chemical vapor deposition and focused electron or ion beam induced deposition, which are techniques to produce nanomaterials. We report the conventional and mechanochemical ‘green’ synthesis of amidine-carboxylate [Ni&lt;small&gt;&lt;sub&gt;2&lt;/sub&gt;&lt;/small&gt;(NH&lt;small&gt;&lt;sub&gt;2&lt;/sub&gt;&lt;/small&gt;(NH&lt;img alt=\"[double bond, length as m-dash]\" border=\"0\" src=\"https://www.rsc.org/images/entities/char_e001.gif\"/&gt;)CR&lt;small&gt;&lt;sub&gt;f&lt;/sub&gt;&lt;/small&gt;)&lt;small&gt;&lt;sub&gt;2&lt;/sub&gt;&lt;/small&gt;(μ-O&lt;small&gt;&lt;sub&gt;2&lt;/sub&gt;&lt;/small&gt;CR&lt;small&gt;&lt;sub&gt;f&lt;/sub&gt;&lt;/small&gt;)&lt;small&gt;&lt;sub&gt;4&lt;/sub&gt;&lt;/small&gt;] (R&lt;small&gt;&lt;sub&gt;f&lt;/sub&gt;&lt;/small&gt; = CF&lt;small&gt;&lt;sub&gt;3&lt;/sub&gt;&lt;/small&gt;, C&lt;small&gt;&lt;sub&gt;2&lt;/sub&gt;&lt;/small&gt;F&lt;small&gt;&lt;sub&gt;5&lt;/sub&gt;&lt;/small&gt;) and imidoylamidinate [Ni(NHC(CF&lt;small&gt;&lt;sub&gt;3&lt;/sub&gt;&lt;/small&gt;)NC(CF&lt;small&gt;&lt;sub&gt;3&lt;/sub&gt;&lt;/small&gt;)NH)&lt;small&gt;&lt;sub&gt;2&lt;/sub&gt;&lt;/small&gt;] complexes with perfluorinated substituents and their characteristics. Infrared spectroscopy, electron impact mass spectrometry, and density-functional theory calculations were used to confirm the formation of dinuclear amidine-carboxylate and mononuclear imidoylamidinate complexes. Additionally, the structure of [Ni(NHC(CF&lt;small&gt;&lt;sub&gt;3&lt;/sub&gt;&lt;/small&gt;)NC(CF&lt;small&gt;&lt;sub&gt;3&lt;/sub&gt;&lt;/small&gt;)NH)&lt;small&gt;&lt;sub&gt;2&lt;/sub&gt;&lt;/small&gt;]·(NH&lt;small&gt;&lt;sub&gt;4&lt;/sub&gt;&lt;/small&gt;)(CF&lt;small&gt;&lt;sub&gt;3&lt;/sub&gt;&lt;/small&gt;CONH)·(CF&lt;small&gt;&lt;sub&gt;3&lt;/sub&gt;&lt;/small&gt;CONH&lt;small&gt;&lt;sub&gt;2&lt;/sub&gt;&lt;/small&gt;)·H&lt;small&gt;&lt;sub&gt;2&lt;/sub&gt;&lt;/small&gt;O was solved using single crystal X-ray diffraction. Thermal stability and volatility of the studied compounds were investigated using thermal analysis and sublimation experiments. These results show that [Ni&lt;small&gt;&lt;sub&gt;2&lt;/sub&gt;&lt;/small&gt;(NH&lt;small&gt;&lt;sub&gt;2&lt;/sub&gt;&lt;/small&gt;(NH&lt;img alt=\"[double bond, length as m-dash]\" border=\"0\" src=\"https://www.rsc.org/images/entities/char_e001.gif\"/&gt;)CC&lt;small&gt;&lt;sub&gt;2&lt;/sub&gt;&lt;/small&gt;F&lt;small&gt;&lt;sub&gt;5&lt;/sub&gt;&lt;/small&gt;)&lt;small&gt;&lt;sub&gt;2&lt;/sub&gt;&lt;/small&gt;(μ-O&lt;small&gt;&lt;sub&gt;2&lt;/sub&gt;&lt;/small&gt;CC&lt;small&gt;&lt;sub&gt;2&lt;/sub&gt;&lt;/small&gt;F&lt;small&gt;&lt;sub&gt;5&lt;/sub&gt;&lt;/small&gt;)&lt;small&gt;&lt;sub&gt;4&lt;/sub&gt;&lt;/small&gt;] and [Ni(NHC(CF&lt;small&gt;&lt;sub&gt;3&lt;/sub&gt;&lt;/small&gt;)NC(CF&lt;small&gt;&lt;sub&gt;3&lt;/sub&gt;&lt;/small&gt;)NH)&lt;small&gt;&lt;sub&gt;2&lt;/sub&gt;&lt;/small&gt;] sublimate over a range of 358–423 K under 10&lt;small&gt;&lt;sup&gt;−2&lt;/sup&gt;&lt;/small&gt; mbar pressure. Electron impact mass spectrometry of complexes and microscopy studies (SEM/EDX and TEM/EDX) reveal that [Ni&lt;small&gt;&lt;sub&gt;2&lt;/sub&gt;&lt;/small&gt;(NH&lt;small&gt;&lt;sub&gt;2&lt;/sub&gt;&lt;/small&gt;(NH&lt;img alt=\"[double bond, length as m-dash]\" border=\"0\" src=\"https://www.rsc.org/images/entities/char_e001.gif\"/&gt;)CC&lt;small&gt;&lt;sub&gt;2&lt;/sub&gt;&lt;/small&gt;F&lt;small&gt;&lt;sub&gt;5&lt;/sub&gt;&lt;/small&gt;)&lt;small&gt;&lt;sub&gt;2&lt;/sub&gt;&lt;/small&gt;(μ-O&lt;small&gt;&lt;sub&gt;2&lt;/sub&gt;&lt;/small&gt;CC&lt;small&gt;&lt;sub&gt;2&lt;/sub&gt;&lt;/small&gt;F&lt;small&gt;&lt;sub&gt;5&lt;/sub&gt;&lt;/small&gt;)&lt;small&gt;&lt;sub&gt;4&lt;/sub&gt;&lt;/small&gt;] is the most sensitive to low- and high-energy electrons. For this compound, the nickel-based materials were grown on silicon, glass, and finally titania nanotubes using the chemical vapor deposition (CVD) process. Kinetic tests have shown that the modification of titania ","PeriodicalId":71,"journal":{"name":"Dalton Transactions","volume":"244 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2025-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144165633","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Ferroelectricity and phase transition of halide solid-solution dabcoH(BrxI1−x)","authors":"Yuki Ohishi, Junya Fujiwara, Atsuko Masuya-Suzuki, Yoko Tatewaki, Sadafumi Nishihara, Shun Dekura, Tomoyuki Akutagawa, Ryo Tsunashima","doi":"10.1039/d5dt00583c","DOIUrl":"https://doi.org/10.1039/d5dt00583c","url":null,"abstract":"The temperature and composition dependence of the ferroelectric and structural phase transition behaviours of hydrogen-bonding molecular relaxor dabcoHX (X = Br, I) were investigated using a halide solid-solution, dabcoH(Br<small>_<em>x</em></small>I<small>_{1−<em>x</em>}</small>). A typical relaxor ferroelectric type polarisation-electric field relationship was observed with increases in temperature and Br-content. In addition, the phase transition temperature depends on the composition, and the structure of I-rich solid-solutions changed reversibly back to a hydrogen-bonded hexagonal phase after heating. These results demonstrated the tuning of relaxor ferroelectrics by tuning the ratio of Br and I ions in the one-dimensional dabco-based hydrogen bonding system.","PeriodicalId":71,"journal":{"name":"Dalton Transactions","volume":"18 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2025-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144165637","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"High C-rate Li-NMC/Graphite Pouch Cell End-of-Life Prediction via Cycle-Dependent Variations and Machine Learning","authors":"Jung-goo Choi, Jethro Daniel Agbayani Pascasio, Jaeyoung Lee","doi":"10.1039/d5dt00659g","DOIUrl":"https://doi.org/10.1039/d5dt00659g","url":null,"abstract":"The accurate prediction of end-of-life for lithium-ion batteries is crucial for enhancing safety, reliability, and cost-efficiency in electric vehicles and energy storage systems. This study investigates the degradation characteristics of Li-NMC/graphite pouch cells under high C-rate conditions and introduces a machine learning-based predictive model for EoL estimation. Incremental capacity analysis is integrated with ensemble models such as Random Forest, Gradient Boosting, and CatBoost to extract electrochemical degradation features. Our model accurately predicts the cycle number at which state of health reaches 80%, with the Gradient Boosting algorithm achieving the highest prediction accuracy, with a root mean squared error of 17.63 and a mean absolute percentage error of 3.11. These findings demonstrate the potential of data-driven approaches for reliable battery health monitoring. The proposed framework can significantly contribute to the advancement of predictive maintenance strategies in battery management systems.","PeriodicalId":71,"journal":{"name":"Dalton Transactions","volume":"6 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2025-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144165644","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Multi -functional zinc cobaltite materials for perovskite solar cell and hydrogen evolution reaction applications","authors":"K. P. Muthukumaran, V. Arjun, A. Nithya, Jingbo Zhang, S. Karuppuchamy","doi":"10.1039/d5dt00765h","DOIUrl":"https://doi.org/10.1039/d5dt00765h","url":null,"abstract":"Spinel-structured zinc cobaltite nanoparticles (ZnCo<small>₂</small>O<small>₄</small> NPs) were successfully synthesized <em>via</em> a hydrothermal method, and their functionality in perovskite solar cells (PSCs) and hydrogen evolution reactions (HERs) was explored. ZnCo<small>₂</small>O<small>₄</small> NPs were incorporated with methyl ammonium lead iodide (MAPbI<small>₃</small>). ZnCo<small>₂</small>O<small>₄</small>-MAPbI<small>₃</small> was used as an absorber layer in perovskite solar cells, and its photovoltaic behaviour was examined. The fabricated ZnCo<small>₂</small>O<small>₄</small>(Z2)-MAPbI<small>₃</small>-based PSC exhibited the highest PCE of 9.58%, with a fill factor (FF) of 0.59, an open circuit voltage (<em>V</em><small>_oc</small>) of 0.9 V and a short circuit current (<em>J</em><small>_sc</small>) of 18.05 mA cm<small>⁻²</small>. The fabricated device showed stability by retaining 84% of its original efficiency under ambient conditions. Additionally, ZnCo<small>₂</small>O<small>₄</small> NPs were used as electrocatalysts for hydrogen evolution reactions. The ZnCo<small>₂</small>O<small>₄</small> catalyst exhibited excellent electrocatalytic activity and achieved an overpotential of 109.21 mV at 10 mA cm<small>⁻²</small>.","PeriodicalId":71,"journal":{"name":"Dalton Transactions","volume":"43 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2025-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144165635","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Electrical conductivity of low-doped ceria-based ceramics","authors":"Igor Zagaynov, Sergey V. Fedorov, Olga Antonova","doi":"10.1039/d4dt03165b","DOIUrl":"https://doi.org/10.1039/d4dt03165b","url":null,"abstract":"Ceria-based ceramic materials (M0.01Ce0.99O2) were successfully synthesized by the co-precipitation method and sintered at 1000 °C for 4 h in air. The electrical conductivity of these systems was measured by AC impedance spectroscopy at 500-750 °C in air; it has been established that the small introduction of dopants such as copper, bismuth, samarium, and neodymium increased this parameter by 4-5 times. However, the optimal dopants are Bi or Nd due to their higher conductivity and oxide ion transference number.","PeriodicalId":71,"journal":{"name":"Dalton Transactions","volume":"33 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2025-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144154099","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}