Guoxin Ding , Xiangxiang Chen , Yuexiang Hu , Yan Liu , Jun Liu , Guojun Cheng
{"title":"Preparation and microwave absorption properties of MWCNTs/RGO/NiFe-LDH three-dimensional composites with varying metal ratios","authors":"Guoxin Ding , Xiangxiang Chen , Yuexiang Hu , Yan Liu , Jun Liu , Guojun Cheng","doi":"10.1016/j.jssc.2025.125348","DOIUrl":"10.1016/j.jssc.2025.125348","url":null,"abstract":"<div><div>The design of the material structure significantly influences microwave absorption properties. Enhancing electromagnetic performance requires the creation of diverse and heterogeneous interfaces to promote extensive wave reflections. This study developed 3D composites with point (NiFe-LDH), line (multi-walled carbon nanotubes, MWCNTs), and surface (reduced graphene oxide, RGO) architectures using ultrasonic stirring and a hydrothermal process, aiming to achieve improved electromagnetic properties. At a Ni:Fe ratio of 3:1, MWCNTs are interspersed within the layers of reduced RGO, forming a distinctive three-dimensional network structure. Additionally, on the MWCNTs/RGO composite's surface, NiFe-LDH flakes grow uniformly. The resulting composite exhibits an effective absorption bandwidth (EAB) of 5.2 GHz and a minimum reflection loss (RL<sub>min</sub>) of −57.93 dB at a thickness of 1.64 mm. Furthermore, a thickness of 1.70 mm achieves a maximum EAB of 6.88 GHz. These results demonstrate that the MWCNTs/RGO/NiFe-LDH composite provides a broad microwave absorption bandwidth and high absorption efficiency, making it a promising candidate for developing advanced materials for microwave absorption applications.</div></div>","PeriodicalId":378,"journal":{"name":"Journal of Solid State Chemistry","volume":"347 ","pages":"Article 125348"},"PeriodicalIF":3.2,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143759587","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}
Subham Naik , Suman S. Das , Aarti Gautam , S.E. Lofland , K.V. Ramanujachary , Saroj L. Samal , Ashok K. Ganguli
{"title":"Exploring the mixed valency of chromium in calcium-doped DyCrO3: Structural and magnetic properties","authors":"Subham Naik , Suman S. Das , Aarti Gautam , S.E. Lofland , K.V. Ramanujachary , Saroj L. Samal , Ashok K. Ganguli","doi":"10.1016/j.jssc.2025.125347","DOIUrl":"10.1016/j.jssc.2025.125347","url":null,"abstract":"<div><div>A series of new mixed rare-earth orthochromite solid solutions, Ca<sub><em>x</em></sub>Dy<sub>1-<em>x</em></sub>CrO<sub>3</sub> (<em>x</em> = 0.0, 0.1, 0.2, 0.3, 0.4), are synthesized using the solid-state route at 1100 °C. The distorted orthorhombic phase is retained till 40 mol% of Ca substitution in the series of solid solutions forming an A-site disordered orthorhombic perovskite. The structural characterizations of the solid solution show that the larger-sized and divalent Ca induces structural changes. The orthorhombic lattice is compressed by approximately 0.47 %, and the octahedral distortion has increased severalfold despite decreased octahedral tilting angles and increased average A-site cation size. The charge neutrality is maintained by promoting tri-valent Cr to tetravalency, compensating for the increase in mean Dy-site radius with larger-sized Ca substitution and decreasing the net magnetization in the series of solid solutions verified by XPS. The antiferromagnetic nature is retained in the whole series of compounds, whereas the ferromagnetic contribution to the overall magnetic moment decreases with decreased Dy content.</div></div>","PeriodicalId":378,"journal":{"name":"Journal of Solid State Chemistry","volume":"347 ","pages":"Article 125347"},"PeriodicalIF":3.2,"publicationDate":"2025-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143748463","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}
Xiaoshan Feng , Ling Chen , Siying su , Guoxin Zhuang , Quanming Xu , Bifei Huang , Fenglan Li , Daifeng Lin
{"title":"La0.97Yb0.03CoO3 perovskite with excellent CO2 and H2O resistance for total oxidation of propane","authors":"Xiaoshan Feng , Ling Chen , Siying su , Guoxin Zhuang , Quanming Xu , Bifei Huang , Fenglan Li , Daifeng Lin","doi":"10.1016/j.jssc.2025.125346","DOIUrl":"10.1016/j.jssc.2025.125346","url":null,"abstract":"<div><div>In this study, La<sub>1−x</sub>Yb<sub>x</sub>CoO<sub>3</sub> (x=0, 0.01, 0.03, 0.05) perovskite oxides were synthesized by a sol–gel route. The obtained materials were characterized by XRD, BET, H<sub>2</sub>-TPR, O<sub>2</sub>-TPD, SEM, TGA, XPS, and evaluated in the catalytic oxidation of propane. It is demonstrated that the suitable introduction of Yb in A site of LaCoO<sub>3</sub> perovskite can create structural defects promoting reducibility of Co ions, increasing Co<sup>2+</sup>/Co<sup>3+</sup> ratios and O<sub>ads</sub>/O<sub>latt</sub> ratio. When Yb is excessive, a cubic perovskite phase with decreased defects is found. As a result, La<sub>0.97</sub>Yb<sub>0.03</sub>CoO<sub>3</sub> catalyst shows the highest of reaction rate 1.15 μmol<sub>C3H8</sub>/(g·s) at 350°C, when it is 0.76 μmol<sub>C3H8</sub>/(g·s) for pristine LaCoO<sub>3</sub>. Moreover, it exhibits excellent stability in a duration test of 80 h at 400 °C and strong resistance against 5 vol% H<sub>2</sub>O and/or 5 vol% CO<sub>2</sub> during a lasting 40 h.</div></div>","PeriodicalId":378,"journal":{"name":"Journal of Solid State Chemistry","volume":"348 ","pages":"Article 125346"},"PeriodicalIF":3.2,"publicationDate":"2025-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143768134","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}
Zhiqiang Zhou, Xiao Zhang, Chunying Chen, Liyun Yang
{"title":"Colorimetric detection of thiocyanate via inhibiting the peroxidase-like activity of Fe-modified porphyrinic metal-organic framework","authors":"Zhiqiang Zhou, Xiao Zhang, Chunying Chen, Liyun Yang","doi":"10.1016/j.jssc.2025.125345","DOIUrl":"10.1016/j.jssc.2025.125345","url":null,"abstract":"<div><div>Monitoring thiocyanate (SCN<sup>−</sup>) levels is important for both food safety and the health of humans. In this study, a colorimetric strategy based on Fe-modified porphyrinic MOF (PCN-224-Fe) for SCN<sup>−</sup> detection was developed. The insertion of Fe<sup>3+</sup> to PCN-224 leads to the formation of Fe–N<sub>4</sub> structure and endows the nanoprobe with peroxidase-like activity, and colorless TMB is oxidized to blue oxTMB in the presence of H<sub>2</sub>O<sub>2</sub>. Based on the formation of Fe(SCN)<sub>6</sub><sup>3−</sup>, SCN<sup>−</sup> can poison the active Fe–N<sub>4</sub> site, thus inhibiting the peroxidase-like activity of the sensor. The colorimetric linear concentration-response of PCN-224-Fe towards SCN<sup>−</sup> is 0.1–1 μM and 1–20 μM with a limit detection of 44 nM and 0.41 μM, respectively. This approach has shown its sensing accuracy of SCN<sup>−</sup> in milk and human urine samples with recoveries ranging from 96.49 % to 102.79 %, proving its practical application in real samples analysis.</div></div>","PeriodicalId":378,"journal":{"name":"Journal of Solid State Chemistry","volume":"347 ","pages":"Article 125345"},"PeriodicalIF":3.2,"publicationDate":"2025-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143726024","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}
Wenbin Shi , A.V. Garshev , V.O. Yapaskurt , Jinlei Yao , A.V. Morozkin
{"title":"Synthesis of Sm26Co11Ga6-type R26Co5+xIn12-x compounds (RY, Dy–Tm) (x = 0–0.2) and magnetic properties of Tb26Co5In12","authors":"Wenbin Shi , A.V. Garshev , V.O. Yapaskurt , Jinlei Yao , A.V. Morozkin","doi":"10.1016/j.jssc.2025.125343","DOIUrl":"10.1016/j.jssc.2025.125343","url":null,"abstract":"<div><div>Ternary rare-earth-based <em>R</em><sub>26</sub>Co<sub>5</sub>–<sub>6</sub>In<sub>12-11</sub> (<em>R</em><img>Y, Tb–Tm) compounds have been prepared by arc melting and subsequent annealing at 870 K. The powder X-ray diffraction analysis reveals that the samples crystallizes in the tetragonal Sm<sub>26</sub>Co<sub>11</sub>Ga<sub>6</sub>-type structure (space group <em>P</em>4/<em>mbm</em>, N 127, <em>tP</em>86). The lattice parameters follow the lanthanide contraction rule, decreasing from <em>a</em> = 1.19413 nm and <em>c</em> = 1.58441 nm of Tb<sub>26</sub>Co<sub>5</sub>In<sub>12</sub> to <em>a</em> = 1.17353 nm and <em>c</em> = 1.56770 nm of Tm<sub>26</sub>Co<sub>5.2</sub>In<sub>11.8</sub>. Tb<sub>26</sub>Co<sub>5</sub>In<sub>12</sub> is ferromagnetic with the Curie temperature <em>T</em><sub>C</sub> = 72 K, and it shows two mixed ferro-antiferromagnetic ordering at <em>T</em><sub>m</sub>' ∼66 K and <em>T</em><sub>m</sub> = 18 K, respectively. Tb<sub>26</sub>Co<sub>5</sub>In<sub>12</sub> displays distinct hard magnet properties, e.g., the coercive field of 18 kOe, the saturation magnetization of 166 μ<sub>B</sub>/fu and the theoretical maximum energy product (<em>BH</em>)<sub>max</sub> of ∼314 kJ/m<sup>3</sup> at 2 K. The magnetocaloric effect of polycrystalline Tb<sub>26</sub>Co<sub>5</sub>In<sub>12</sub> has been investigated using magnetic and heat capacity measurements.</div></div>","PeriodicalId":378,"journal":{"name":"Journal of Solid State Chemistry","volume":"347 ","pages":"Article 125343"},"PeriodicalIF":3.2,"publicationDate":"2025-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143715421","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}
Hammam Abdurabu Thabit , Mohamad Syazwan Mohd Sanusi , Abdullah Bafaqeer , Usman Iliyasu , Y.S.M. Alajerami , Tariq Al-Abdullah
{"title":"Synthesis, structural, optical and radiation shielding properties: Of (7)AgNO3-(48)B2O3-(15)Li2O3-(30-X)TeO2 - xMoO3: Impact of MoO3-Modified borotellurite glasses","authors":"Hammam Abdurabu Thabit , Mohamad Syazwan Mohd Sanusi , Abdullah Bafaqeer , Usman Iliyasu , Y.S.M. Alajerami , Tariq Al-Abdullah","doi":"10.1016/j.jssc.2025.125344","DOIUrl":"10.1016/j.jssc.2025.125344","url":null,"abstract":"<div><div>This work explores the development and characterisation of a new glass system, (7)Ag2O-(48)B<sub>2</sub>O<sub>3</sub>-(15)Li<sub>2</sub>CO<sub>3</sub>-(30-x)TeO<sub>2</sub>-(x)MoO<sub>3</sub>, with variable MoO3 molar concentrations (0–20 mol%). The glasses were produced using the melt-quenching process, and their structural, optical, and radiation shielding capabilities were thoroughly investigated. X-ray diffraction approved the materials' amorphous structure, while Raman spectroscopy provided extensive information on their vibrational characteristics. The Raman analysis revealed characteristic bands corresponding to TeO<sub>3</sub>, TeO<sub>4</sub>, and MoO<sub>6</sub> units, with notable changes in band intensity and the emergence of a 900 cm<sup>−1</sup> band as the MoO<sub>3</sub> content increased, indicating structural modifications in the glass matrix. Optical measurements showed significant effects of MoO<sub>3</sub> on the glasses' behavior. A red-shift in the cut-off wavelength from 390 nm for ABLTM0 to 420 nm for ABLTM20 was observed, alongside a non-linear decrease in the optical bandgap energy from 2.67 eV to 2.60 eV. These trends were linked to the formation of non-bridging oxygens and disruptions in the glass network caused by the incorporation of MoO<sub>3</sub> as a network modifier. The refractive index and optical basicity increased slightly with MoO3 concentration, which improved the glasses' polarizability. Additional parameters such as dielectric constant, molar refraction, and optical electronegativity were also examined to provide a detailed understanding of the optical properties. The radiation shielding properties of the glasses were evaluated in terms of mass attenuation coefficients (MAC), half-value layers (HVL), and fast neutron removal cross-sections (FNRCS). The results showed that the glass samples had high MAC values at lower gamma-ray energies, meaning they effectively attenuated radiation. However, their effectiveness decreased at higher energies due to scattering effects. Notably, ABLTM20 demonstrated the best neutron shielding performance, achieving an FNRCS value of 0.106 cm<sup>−1</sup>, outperforming conventional shielding materials like concrete and water. These findings underscore the potential of this glass system for advanced applications in medical imaging, nuclear safety, and radiation shielding technologies.</div></div>","PeriodicalId":378,"journal":{"name":"Journal of Solid State Chemistry","volume":"348 ","pages":"Article 125344"},"PeriodicalIF":3.2,"publicationDate":"2025-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143768135","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":"Elucidation of atomic and magnetic structures of Al3+-doped Li-ferrite (LiFe5O8) compounds","authors":"S. Inckemann , S.-H. Park , A. Arauzo , M. Avdeev","doi":"10.1016/j.jssc.2025.125325","DOIUrl":"10.1016/j.jssc.2025.125325","url":null,"abstract":"<div><div>Chemical stress for structural deformation in <figure><img></figure> , denoted as Li60Al40, and <figure><img></figure> , denoted as Li50Al50, was achieved by introducing <figure><img></figure> into α- <figure><img></figure> known as a high-temperature multiferroic. These new solid solution compounds crystallize in the tetragonal space group <strong><em>P</em></strong>4<sub>3</sub>2<sub>1</sub>2. Their magnetic spin arrangements at 300<!--> <!-->K could be determined in the magnetic space group <strong><em>P</em></strong>4<sub>3</sub>2<sub>1</sub> <span><math><mrow><msup><mrow></mrow><mrow><mo>′</mo></mrow></msup><msup><mrow><mn>2</mn></mrow><mrow><mo>′</mo></mrow></msup></mrow></math></span> using high-resolution neutron powder diffraction (HRNPD) data. Within the experimental uncertainty in HRNPD, the magnetic moments of <figure><img></figure> ions within <figure><img></figure> in the B-sublattice are arranged along the crystallographic <strong><em>c</em></strong> axis and antiparallel to those of <figure><img></figure> in the A-sublattice. In comparison to the Fe-rich Li60Al40, the Fe-poor Li50Al50 shows a stronger dilute effect for the higher Li content at the octahedral site Fe1b. The dilute effect is associated with the lowering of both saturation magnetization and <span><math><msub><mrow><mi>T</mi></mrow><mrow><mi>C</mi></mrow></msub></math></span>. On the other hand, Li50Al50 shows large electric dipole moments in the strong distorted <figure><img></figure> and <figure><img></figure> polyhedra.</div></div>","PeriodicalId":378,"journal":{"name":"Journal of Solid State Chemistry","volume":"347 ","pages":"Article 125325"},"PeriodicalIF":3.2,"publicationDate":"2025-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143748462","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Zeinhom M. El-Bahy , Muhammad Nadeem , Najla AlMasoud , Amal A. Al-wallan , Taghrid S. Alomar , Hafiz Muhammad Asif
{"title":"CO2 conversion under visible-light driven photocatalysis by employing porphyrin MOF encapsulated Keggin polyoxometalates","authors":"Zeinhom M. El-Bahy , Muhammad Nadeem , Najla AlMasoud , Amal A. Al-wallan , Taghrid S. Alomar , Hafiz Muhammad Asif","doi":"10.1016/j.jssc.2025.125342","DOIUrl":"10.1016/j.jssc.2025.125342","url":null,"abstract":"<div><div>Effective conversion solutions are required to minimize climate change due to an increasing atmospheric CO<sub>2</sub> concentration. Photocatalytic conversion of CO<sub>2</sub> into valuable chemicals, such as formic acid, is a viable strategy for environmental remediation and sustainable energy. In this study, a novel porphyrin based MOFs (Metal organic framework) encapsulated with the Keggin type Polyoxometalate (POMs) namely (CPMOF@KPOM) have been synthesized and characterized by using different analytical techniques. Energy Dispersive X-ray spectroscopy (EDX) confirmed the homogeneous presence of C, N, O, Al, K, B, and W, verifying the incorporation of Keggin type POMs (K.POMs) within the framework. Scanning Electron Microscopy (SEM) revealed a porous, irregular cubic morphology, while fluorescence spectroscopy exhibited strong emission with a red shift upon varying excitation wavelengths. Electrochemical analysis via Cyclic Voltammetry (CV) and Mott-Schottky measurements demonstrated an n-type semiconductor behavior with a narrow band gap of 0.97 eV, positioning CPMOF@KPOM as a promising material for photo-electrocatalytic applications. Optical investigations, including UV–Visible absorption and diffuse Reflectance spectroscopy (DRS), confirmed significant visible-light harvesting attributed to porphyrin components. Thermal analyses including Thermogravimetric analysis and Differential scanning calorimetry (TGA and DSC) and Powder X-Ray Diffraction (PXRD) affirmed high thermal stability and phase purity. Photocatalytic reduction tests under xenon lamp irradiation yielded formic acid from CO<sub>2</sub>, with adsorption studies indicating a maximum CO<sub>2</sub> uptake of 4.78 mmol/g and a desorption efficiency of 20 % at 30 °C. These results establish CPMOF@KPOM as an efficient, stable, and versatile photocatalyst for CO<sub>2</sub> conversion and energy storage applications.</div></div>","PeriodicalId":378,"journal":{"name":"Journal of Solid State Chemistry","volume":"348 ","pages":"Article 125342"},"PeriodicalIF":3.2,"publicationDate":"2025-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143768133","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}
Yuan Li , Shengkai Sun , Hanfang Liu , Wenna Wang , Dehong Chen , Yu Yang , Feng Liu , Bin Yu , Jia Liu , Binjie Li , Lei Wang , Bin Li
{"title":"Optimizing adding sequence of carbon black in solid-state synthesis of hierarchical TS-1 zeolite for efficient 1-hexene epoxidation","authors":"Yuan Li , Shengkai Sun , Hanfang Liu , Wenna Wang , Dehong Chen , Yu Yang , Feng Liu , Bin Yu , Jia Liu , Binjie Li , Lei Wang , Bin Li","doi":"10.1016/j.jssc.2025.125339","DOIUrl":"10.1016/j.jssc.2025.125339","url":null,"abstract":"<div><div>Epoxidation of olefin catalyzed by titanium silicalite-1 (TS-1) can obtain important intermediate epoxides of industrial production in a green and pollution-free manner. However, due the problem of macromolecules transport path restraint, which cause the catalyst to fail in lifetime and activity. Strategically, to increase the transport channel of macromolecules and shorten the transport path, it is necessary to introduce mesoporous structures into zeolite. Here, we report a solid-state synthesis of hierarchical TS-1 zeolite by optimizing carbon black sequence. The texture property of hierarchical TS-1 can be optimized by carbon black. Most importantly, the addition sequence of carbon black can impact the porosity of hierarchical TS-1. The hierarchical zeolite is synthesized by incorporating 0.2 g carbon black into the seeds. When carbon black is firstly combined with seeds, the enhanced interaction facilitates the subsequent growth process, leading to large surface area from mesopores (121 m<sup>2</sup>/g) and abundant pores size (8–40 nm) and enhanced exposure of Ti active sites. The optimized hierarchical TS-1 possesses excellent catalytic performance with high conversion rate (24.4 %) and similar selectivity (93.8 %), which are 1.6 times higher than that of traditional TS-1 zeolites.</div></div>","PeriodicalId":378,"journal":{"name":"Journal of Solid State Chemistry","volume":"347 ","pages":"Article 125339"},"PeriodicalIF":3.2,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143706348","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}
V. Bilovol , P. Jeleń , K. Mech , K. Sokołowski , P. Botella , E. Bandiello , F.J. Manjón , D. Errandonea
{"title":"Effect of sintering temperature on cation distribution in CoFe2O4 nanoparticles","authors":"V. Bilovol , P. Jeleń , K. Mech , K. Sokołowski , P. Botella , E. Bandiello , F.J. Manjón , D. Errandonea","doi":"10.1016/j.jssc.2025.125338","DOIUrl":"10.1016/j.jssc.2025.125338","url":null,"abstract":"<div><div>We report a study of the cation arrangement in CoFe<sub>2</sub>O<sub>4</sub> nanoparticles synthesized using a co-precipitation method followed by high-temperature sintering in the range of 500–1000 °C. Analysis of the samples by Raman, infrared, and X-ray photoelectron spectroscopy (Fe 2p<sub>3/2</sub> and Co 2p<sub>3/2</sub>) revealed that the sintering temperature influences the distribution of cations in the spinel lattice. Specifically, increasing the sintering temperature leads to an increase in the inversion degree parameter (γ), which represents the fraction of Co ions residing in octahedral sites, driving the structure toward a fully inverted spinel. These results are in good agreement with those previously obtained by <sup>57</sup>Fe Mössbauer spectroscopy, X-ray diffraction, and X-ray absorption experiments on the same set of samples. Additionally, as shown by the UV–visible spectra, the cationic distribution in the samples clearly affects the band gap value (2.5–2.8 eV).</div></div>","PeriodicalId":378,"journal":{"name":"Journal of Solid State Chemistry","volume":"347 ","pages":"Article 125338"},"PeriodicalIF":3.2,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143697919","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}