Inorganic Chemistry Communications最新文献

{"title":"Machine learning-guided photocatalytic degradation of Eriochrome Black T using green Nb2O5-NPs@CeO2-NPs","authors":"Adriano Losekann Mota Nunes ,&nbsp;Leandro Rodrigues Oviedo ,&nbsp;Maurício Dalla Costa Rodrigues da Silva ,&nbsp;Cristiane dos Santos ,&nbsp;Giovani Pavoski ,&nbsp;Denise Crocce Romano Espinosa ,&nbsp;William Leonardo da Silva","doi":"10.1016/j.inoche.2025.114779","DOIUrl":"10.1016/j.inoche.2025.114779","url":null,"abstract":"<div><div>This study aims to synthesize a green niobium-based catalyst doped with cerium oxide nanoparticles (Nb₂O₅-NPs@CeO₂-NPs) for Eriochrome Black T (EBT) dye degradation under visible radiation and to propose a degradation reaction pathway by machine learning. Nb₂O₅-NPs@CeO₂-NPs were characterized by X-Ray diffraction analysis (XRD), zero-charge point (pH_ZCP)_, Field Emission Gun Scanning Electron Microscopy (FEG-SEM) coupled with Energy Dispersive Spectroscopy (EDS), Diffuse reflectance spectroscopy (DRS), N₂ porosimetry and zeta potential (ZP). The algorithms Decision tree (DT), Random Forest (RF), and Extreme Gradient Boosting (XGBoost) were used to identify the main degradation products of EBT degradation. The incorporation of CeO₂-NPs onto the Nb₂O₅-NPs reduced the band gap from 2.89 to 2.44 eV, resulting in a stable nanocatalyst (ZP = −22.7 mV). Similarly, S_BET increased from 19 to 102 m² g⁻¹, and D_p from 8.5 to 9.25 nm. However, V_p reduced from 0.04 to 0.2 cm³ g⁻¹. Nb₂O₅-NPs@CeO₂-NPs showed pH_ZCP 6.54, which justifies the higher EBT degradation in the photocatalytic assay (pH 5), probably due to higher electrostatic interactions. Moreover, 68 % EBT degradation (<em>k</em> = 0.0101 min⁻¹) was achieved after 120 min, with good photocatalytic activity up to 3 cycles. O₂^–<img> and h⁺ showed a key role in the EBT degradation reaction. RF algorithm showed the best performance among the ML algorithms (R²_training = 0.9539 and R²_test = 0.8364) and lower RMSE (RMSE_training = 25.46 and RMSE_test = 49.24). Therefore, the nanocatalyst is promising catalytic activity and machine learning is a useful tool for photocatalytic applications.</div></div>","PeriodicalId":13609,"journal":{"name":"Inorganic Chemistry Communications","volume":"179 ","pages":"Article 114779"},"PeriodicalIF":4.4,"publicationDate":"2025-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144178330","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":"Enhanced photoelectrocatalytic degradation of tetracycline by g-C3N4-TiO2/Ti3C2 Mxene composite modified TiO2 nanostructures photoelectrode","authors":"Samira Yousefzadeh ,&nbsp;Omid Mokhatab ,&nbsp;Monireh Faraji","doi":"10.1016/j.inoche.2025.114785","DOIUrl":"10.1016/j.inoche.2025.114785","url":null,"abstract":"<div><div>Herein, TiO₂ nanograsses on nanotubes array (TGTA) electrode was modified by g-C₃N₄-TiO₂/Ti₃C₂ composite and TGTA/g-C₃N₄-TiO₂/Ti₃C₂ photoelectrode was investigated in the photoelectrocatalytic degradation of tetracycline. g-C₃N₄-TiO₂/Ti₃C₂ composite displayed better visible light absorption and charge separation compared to the g-C₃N₄. Based on these properties, the TGTA/g-C₃N₄-TiO₂/Ti₃C₂ photoelectrode indicated significantly the highest light absorption, resulting degradation efficiency of 76.14 % within 105 min. Rate constant of the TGTA/g-C₃N₄-TiO₂/Ti₃C₂ was evaluated at about 13.64 × 10⁻³ min⁻¹, which is approximately 7 and 3 times greater than that of the TGTA and TGTA/g-C₃N₄ photoelectrodes, respectively. Moreover, optimal applied potential of 1.5 V and the tetracycline concentration of 10 mg/L were determined for the TGTA/g-C₃N₄-TiO₂/Ti₃C₂ photoelectrode with significant stability after 5 cycles. According to the results, the g-C₃N₄-TiO₂/Ti₃C₂ composite on the TGTA electrode enhanced the light absorption, charge separation and transfer, introducing a promising photoelectrode for photoelectrocatalytic degradation of tetracycline.</div></div>","PeriodicalId":13609,"journal":{"name":"Inorganic Chemistry Communications","volume":"179 ","pages":"Article 114785"},"PeriodicalIF":4.4,"publicationDate":"2025-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144177509","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":"Synthesis, crystal structure and biological activities of a novel palladium(II) complex of 4-methyl-1,3,4,5-tetrahydro-2H-1,5-benzodiazepin-2-one","authors":"Haseeba Sadaf ,&nbsp;Imtiaz-ud-Din ,&nbsp;Mohammed Fettouhi ,&nbsp;Shafqat Nadeem ,&nbsp;Saeed Ahmad","doi":"10.1016/j.inoche.2025.114780","DOIUrl":"10.1016/j.inoche.2025.114780","url":null,"abstract":"<div><div>A palladium(II) complex of 4-methyl-1,3,4,5-tetrahydro-2<em>H</em>-1,5-benzodiazepin-2-one (Bdazp), {<em>trans</em>-[Pd(Bdazp)₂Cl₂]<strong>.</strong>CH₃CN} (<strong>1</strong>) was synthesized and characterized using thermal analysis and, IR and NMR (¹H and ¹³C) spectroscopy. The crystal structure of the complex was determined by X-ray crystallography. The X-ray analysis shows that the palladium(II) ion in <strong>1</strong> is coordinated by two nitrogen (N5) atoms of Bdazp and two chloride ions at <em>trans</em> positions, assuming a nearly regular square planar geometry. The IR and NMR spectral results are consistent with the coordination of Bdazp to the palladium center. The biological evaluation of the complex indicated that it displayed moderate antibacterial activity and toxicity level against brine shrimps, but its antidiabetic properties were significant compared to the standard drug.</div></div>","PeriodicalId":13609,"journal":{"name":"Inorganic Chemistry Communications","volume":"179 ","pages":"Article 114780"},"PeriodicalIF":4.4,"publicationDate":"2025-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144178329","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":"Efficient Antimicrobial/Antifungal activity and photocatalytic degradation of mixed pollutants (CV, CR, and RhB) using Ag-doped CNT-ZnO hybrid nanocomposites","authors":"Rinku Gupta ,&nbsp;Deepak Kumar ,&nbsp;Kirti Bhardwaj ,&nbsp;Deepanshu Rana ,&nbsp;Pashupati Pratap Neelratan ,&nbsp;Shivom ,&nbsp;Sanjeev Kumar Sharma","doi":"10.1016/j.inoche.2025.114720","DOIUrl":"10.1016/j.inoche.2025.114720","url":null,"abstract":"<div><div>In the present work, Ag-doped CNT-ZnO nanocomposites (CNT-AZO NCs) (0,1,3,5,7, and 10 at.%) were synthesized via hydrothermal precipitation at 130 °C and evaluated the antimicrobial, antifungal, and photocatalytic performance. XRD confirmed a wurtzite ZnO phase with 17–27 nm crystallite sizes, where the 7 at.% sample had the smallest size (17 nm), highest microstrain (0.00668), and dislocation density (0.00346 nm⁻²), enhancing catalytic activity. Significant bandgap reduction from undoped (3.10 eV) to 7 at.% (2.54 eV) improved light absorption and charge carrier separation. The 7 at.% showed the highest antibacterial activity (41.5 % inhibition of E. coli), while the 1 at.% sample exhibited the best antifungal performance (72.7 % inhibition of C. albicans). Photocatalytic tests of mixed pollutants (Crystal Violet:CV, Congo Red:CR, and Rhodamine B:RhB) demonstrated a 92 % removal efficiency within 60 min for the optimized sample (7 at.%), with a maximum rate constant of 0.1808 min⁻¹. The enhanced antimicrobial and photocatalytic effects were attributed to Ag-induced reactive oxygen species (ROS) generation, structural membrane disruption, and metal ion interactions. This study establishes that Ag-doped CNT-ZnO is a promising biomedical and environmental remediation material.</div></div>","PeriodicalId":13609,"journal":{"name":"Inorganic Chemistry Communications","volume":"179 ","pages":"Article 114720"},"PeriodicalIF":4.4,"publicationDate":"2025-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144168332","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":"Insights into the anchoring sites of Ag and Bi co-doped TiO2/biocarbon for photocatalytic degradation of formaldehyde gas under visible light","authors":"Meng-Wei Zheng ,&nbsp;Le Thi Hoang Yen ,&nbsp;Ngoc Thanh Thuy Tran ,&nbsp;Thi My Duyen Huynh ,&nbsp;Kai-An Tsai ,&nbsp;Ying-Chih Pu ,&nbsp;Shou-Heng Liu","doi":"10.1016/j.inoche.2025.114767","DOIUrl":"10.1016/j.inoche.2025.114767","url":null,"abstract":"<div><div>Photocatalytic degradation of formaldehyde (HCHO), recognized as a prominent volatile organic compound (VOC) air pollutant, is one of the ideal solutions for combating indoor air pollution. Ag/Bi co-doped TiO₂ composites decorated with biocarbon (denoted as xAg/Bi-TiO₂/BC) are prepared in this study. Experimentally, the 1.0Ag/Bi-TiO₂/BC photocatalyst shows a superior efficiency toward 90 % removal rate of HCHO (<em>k</em> = 0.0167 min⁻¹) under visible-light irradiation. Further tests are conducted under diverse conditions, including variations in dosage, humidity, and temperature, along with cyclic runs. We observe that the doping sites of Bi and Ag play an important role in the photodecomposition of HCHO. Substitutional doping of Bi can enhance the photocatalytic activity under visible light due to the alleviation of electron-hole recombination and improved light absorption in the visible spectrum. The density functional theory (DFT) shows that Ag in the interstitial site exhibits stronger Ag-Bi interaction than that in the substitution site, resulting in the higher adsorption energy of HCHO and boosting the photocatalytic reaction. Similarly, interstitial doping of Ag causes a red shift in the optical absorption edge, which not only enhances visible light absorption but also serves as an efficient electron transfer mediator. Moreover, possible photodegradation mechanisms and intermediate species are investigated by DFT and in-situ diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS). This comprehensive investigation contributes to an improved understanding of Ag/Bi doping sites on HCHO photodegradation, offering novel and effective avenue for the elimination of HCHO from indoor environments.</div></div>","PeriodicalId":13609,"journal":{"name":"Inorganic Chemistry Communications","volume":"179 ","pages":"Article 114767"},"PeriodicalIF":4.4,"publicationDate":"2025-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144168407","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":"Preparation of novel DTPA-Modified silica aerogel from rice husk for effective removal of Pb2+ ions from water","authors":"Tu Anh Ho ,&nbsp;Van Doan Nguyen ,&nbsp;Nham Bui Van ,&nbsp;Kiem Thuy Vu ,&nbsp;Tri Dung Dinh ,&nbsp;Anh Tu Nguyen Duc ,&nbsp;Thi Duyen Do ,&nbsp;Manh Khai Nguyen ,&nbsp;Son Thanh Le ,&nbsp;Dieu Thu Le ,&nbsp;Quang Minh Pham ,&nbsp;Anh-Tuan Vu","doi":"10.1016/j.inoche.2025.114768","DOIUrl":"10.1016/j.inoche.2025.114768","url":null,"abstract":"<div><div>Rice husk (RH), a common agricultural byproduct in Southeast Asia, represents a significant untapped resource, prompting governments to explore its conversion into valuable materials. In this work, silica aerogel (SA) produced from RH was modified with chitosan (CS) binder and diethylenetriaminepentaacetic acid (DTPA) to generate a novel SA/CS-DTPA adsorbent for Pb²⁺ elimination. The SA exhibits a highly porous, boasting a substantial surface area of 267.09 m2/g. CS and DTPA modification halved SA’s surface area but greatly boosted Pb²⁺ adsorption. The adsorbents were comprehensively analyzed by scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDX), X-ray diffraction (XRD), high-resolution transmission electron microscopy (HR-TEM), zeta potential, and N₂ adsorption/desorption. Under controlled conditions such as reaction solution pH of 6, temperature 30 of ^oC, 85.03 % Pb²⁺ 40 ppm was sequestered by 0.5 g/L SA/CS-DTPA at a rate of 0.03 <span><span>g.mg</span><svg><path></path></svg></span>⁻¹.min⁻¹. The second-order model and Langmuir isothermal closely monitored the monolayer chemical sorption process, revealing the maximum sequestration capacity of 74.85 mg/g. In addition, the multicomponent adsorption system found that SA/CS-DTPA exhibited the best adsorption affinity for Tartazine (TA) and Pb²⁺, with elimination efficiencies of 88.83 and 69.84 %, respectively. In a harsh environment, SA/CS-DTPA could be regenerated with the fourth cycle efficiency of 72 % of the first cycle, potentially indicating the moderate stability of the synthesized adsorbent. These findings imply that SA/CS-DTPA is a valuable adsorbent for the in situ treatment of pollutants, providing a satisfactory solution for practical wastewater processes.</div></div>","PeriodicalId":13609,"journal":{"name":"Inorganic Chemistry Communications","volume":"179 ","pages":"Article 114768"},"PeriodicalIF":4.4,"publicationDate":"2025-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144168448","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":"A simple, quick, and field-portable colorimetric assay for detecting Pefloxacin mesylate in biological and food samples","authors":"Muhammad Adnan Sami ,&nbsp;Imdad Ali ,&nbsp;Farid Ahmed ,&nbsp;Muhammad Raza Shah","doi":"10.1016/j.inoche.2025.114766","DOIUrl":"10.1016/j.inoche.2025.114766","url":null,"abstract":"<div><div>The simple colorimetric assay for detection of Pefloxacin mesylate in biological and food samples was developed using 4-hydroxycoumarin triazole thiazole stabilized silver nanoparticles (HCTT-AgNPs). HCTT-AgNPs were synthesized via chemical reduction method using sodium borohydride (NaBH₄) and characterized using different spectroscopic techniques such as UV–visible spectroscopy, atomic force microscopy (AFM), scanning electron microscopy (SEM), dynamic light scattering (DLS), and powder X-ray diffraction (XRD). HCTT-AgNPs were found to be highly stable under different physiological parameters such as pH, electrolyte, and elevated temperature stability. The addition of Pefloxacin to HCTT-AgNPs produced a significant reduction in the absorption intensity along with naked eye detectable color change, while all other tested analytes did not produce any detectable change. The developed nano sensor is highly selective for the recognition of Pefloxacin in the presence of other similar analytes as no interference was recorded in competitive experiments. The detection limit for Pefloxacin was 0.002 µM (2 nM) with linearity (R²) of 0.9952 and a stoichiometric binding ratio of 1:2, between HCTT-AgNPs + Pefloxacin antibiotics drug. Further the nano probe was successfully employed for the detection of Pefloxacin in environmental (tap water), biological (plasma, serum, urine, etc.), and food samples.</div></div>","PeriodicalId":13609,"journal":{"name":"Inorganic Chemistry Communications","volume":"179 ","pages":"Article 114766"},"PeriodicalIF":4.4,"publicationDate":"2025-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144168446","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":"Research on the application of metal-organic framework (MOF)-based nanozymes in colorimetric and electrochemical detection of biomolecules","authors":"Xingxing Li ,&nbsp;Li Fu ,&nbsp;Fei Chen ,&nbsp;Yanfei Lv ,&nbsp;Shichao Zhao ,&nbsp;Hassan Karimi-Maleh","doi":"10.1016/j.inoche.2025.114752","DOIUrl":"10.1016/j.inoche.2025.114752","url":null,"abstract":"<div><div>Metal–organic framework (MOF)-based nanozymes have emerged as promising enzyme mimics that integrate the structural tunability of MOFs with catalytic functionalities for biosensing applications. This review highlights recent advances in the design, synthesis, and application of MOF-nanozymes for the colorimetric and electrochemical detection of biomolecules. Strategies to engineer active sites—such as selecting redox-active metal nodes, defect modulation, and post-synthetic modifications—are examined for enhancing peroxidase-, oxidase-, and hydrolase-like activities. Colorimetric detection leverages visible signal outputs triggered by chromogenic substrates, enabling facile analyte recognition with minimal instrumentation, and has demonstrated effective detection of glucose, hydrogen peroxide, antioxidants, and macromolecules through direct catalysis or inhibition mechanisms. Electrochemical sensing benefits from MOF-nanozymes’ dual role as electrocatalysts and immobilization matrices, enabling sensitive detection of small molecules and biomarkers like dopamine, DNA, and proteins through amperometric, voltammetric, or impedance-based methods. Representative systems exhibit impressive sensitivity with detection limits in the femtomolar to micromolar range, and many have shown operational robustness in complex biological matrices. Performance optimization via hybridization with conductive materials or integration into wearable and microfluidic platforms further expands practical applications. Despite substantial progress, challenges remain in improving substrate specificity, understanding active site mechanisms, and achieving long-term operational stability. This review provides a comprehensive synthesis of the current research landscape and identifies future directions for MOF-nanozyme-based biosensors in point-of-care diagnostics, environmental monitoring, and biomedical analysis.</div></div>","PeriodicalId":13609,"journal":{"name":"Inorganic Chemistry Communications","volume":"179 ","pages":"Article 114752"},"PeriodicalIF":4.4,"publicationDate":"2025-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144168442","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":"Synthesis and characterization of Li0.5Co2.5O4 spinel oxide for electrochemical performance","authors":"Rajendra P. Patil ,&nbsp;Prashant N. Nikam ,&nbsp;Basem E. Keshta ,&nbsp;Lalitha Gnanasekaran ,&nbsp;Sadiq H. Khoreem ,&nbsp;Manikandan Ayyar ,&nbsp;AbdAllah A. Alotibi ,&nbsp;Madhappan Santhamoorthy ,&nbsp;Hany Koheil","doi":"10.1016/j.inoche.2025.114759","DOIUrl":"10.1016/j.inoche.2025.114759","url":null,"abstract":"<div><div>A nanocrystalline material of Li_0.5Co_2.5O₄(LCO) is prepared by the sol–gel combustion approach and is used as an electrode for fabricating a high-performance supercapacitor. The characterization of the proposed material using the diffraction X-ray pattern shows the creation of a single-phase cubic spinel oxide structure. The scanning and transmission electron microscopy reveals that these spinel-type lithium cobalt oxide samples contain homogeneous nanocrystalline and uniform grains, while the magnetic investigation demonstrates the ferrimagnetic behavior. Furthermore, the electrochemical properties of the developed electrode are investigated using Cyclic Voltammetry (CV), Galvanostatic Charge Discharge (GCD), and Electrochemical Impedance Spectroscopy (EIS)<!--> <!-->studies in a 1 M KOH electrolyte. The synthesized material is discovered to have a specific capacitance of 2565.5F/g at a current density of 5 mA/cm² with a corresponding energy density of 57Wh/kg and power density of 476 W/kg. Moreover, the proposed electrode material demonstrates excellent capacitance retention well over 91.24 % even after 5000 GCD cycles. Hence, the result shows that the electrode Li_0.5Co_2.5O₄ is a potential candidate for supercapacitor application.</div></div>","PeriodicalId":13609,"journal":{"name":"Inorganic Chemistry Communications","volume":"179 ","pages":"Article 114759"},"PeriodicalIF":4.4,"publicationDate":"2025-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144168406","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":"Structural, optical electrical and magnetic properties of Zn0.5Mg0.5Fe2O4 ferrite","authors":"O. Amorri ,&nbsp;M. Khalfa ,&nbsp;R. Jemai ,&nbsp;J. Horchani ,&nbsp;L. Bessais ,&nbsp;K. Khirouni","doi":"10.1016/j.inoche.2025.114753","DOIUrl":"10.1016/j.inoche.2025.114753","url":null,"abstract":"<div><div>Although spinel ferrites find applications in different fields, their multifunctionality can be improved by substitution in each site. The insertion of different transition metals in this fmily of compounds tailors the electrical and magnetic properties.</div><div>In this study, nano-sized powders of ZnFe₂O₄ doped with Mg²⁺ transition metal ions are synthesized by the solid-state reaction method, with a sintering step at 1200 °C. X-ray diffraction analysis confirms that the resulting structure is cubic, belonging to the <span><math><mrow><mi>F</mi><mi>d</mi><mover><mrow><mn>3</mn></mrow><mrow><mo>¯</mo></mrow></mover><mi>m</mi></mrow></math></span> space group, and exhibits a single-phase with crystallite size of around 35 nm. Optical properties are studied by UV–visible spectroscopy, revealing a direct transition with a bandgap of 3.71 eV. Impedance spectroscopy reveals a thermally activated DC conductivity with an activation energy of 223 meV, while the corroleated barrier hopping (CBH) modelexplained the conduction mechanism in AC regims. Analysis of the Nyquist plots shows the contribution of grains and grain boundaries to the material’s electrical response. The magnetic study evidences a transition between a ferrimagnetic state at low temperature and a superparamagnetic state at room temperature, with a blocking temperature around 80 K. High coercivity and remanent magnetization reflect a stable magnetic order. We deduce that the substitution of Zn by Mg influences the cation distribution and favors superparamagnetism at high temperatures. These results suggest that Zn_0.5Mg_0.5Fe₂O₄is interesting for use in optoelectronic and magnetic devices.</div></div>","PeriodicalId":13609,"journal":{"name":"Inorganic Chemistry Communications","volume":"179 ","pages":"Article 114753"},"PeriodicalIF":4.4,"publicationDate":"2025-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144168447","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}