Solid State Sciences最新文献

{"title":"Advanced ZnO-g-C3N4 nanocomposite: A highly sensitive electrochemical sensor for simultaneous determination of lead and mercury ions","authors":"Vikas Jangra ,&nbsp;Harpreet Kaur ,&nbsp;Narvdeshwar Kumar ,&nbsp;Anand Ratnam ,&nbsp;Lal Bahadur Prasad ,&nbsp;Piyush Kumar Sonkar","doi":"10.1016/j.solidstatesciences.2025.108116","DOIUrl":"10.1016/j.solidstatesciences.2025.108116","url":null,"abstract":"<div><div>This study reports the development of a sensitive and reliable electrochemical sensor based on a zinc oxide nanoparticle-modified graphitic carbon nitride (ZnO@g-C₃N₄) nanocomposite for the individual and simultaneous determination of Pb²⁺ and Hg²⁺ ions. Three different weight ratio of nanocomposites were prepared and characterized by spectroscopic techniques like UV–Vis spectroscopy, Fourier-transform infrared (FT-IR) spectroscopy, X-Ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and microscopic techniques such as scanning electron microscope (SEM), transmission electron microscopy (TEM) and Atomic Force Microscopy (AFM). Thermogravimetric analysis (TGA) was also performed to assess the thermal stability and decomposition behaviour of the prepared samples. The ZnO@g-C₃N₄ nanocomposite modified GCE was successfully fabricated on electrode surface to determine Pb²⁺ and Hg²⁺ simultaneously using differential pulse voltammetry (DPV). Under optimized conditions, the anodic current exhibited a linear relationship with metal ion concentration, covering 0.1–100 μM for Pb²⁺ with a detection limit of 5.17 nM (S/N = 3), and 0.1–10 μM for Hg²⁺ with a detection limit of 7.9 nM (S/N = 3). Finally, the effective application of this novel electrode material allowed for the simultaneous determination of Pb²⁺ and Hg²⁺ in real water samples, cosmetics, and fish tissues, yielding satisfactory recovery results.</div></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":"170 ","pages":"Article 108116"},"PeriodicalIF":3.3,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145414893","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-performance PVA based nanocomposite films reinforced with Si3N4-WC nanoparticles for radiation attenuation and flexible electronics capacitive pressure sensor","authors":"Shaimaa Mazhar Mahdi ,&nbsp;Majeed Ali Habeeb ,&nbsp;Jassim M. AL-Issawe","doi":"10.1016/j.solidstatesciences.2025.108114","DOIUrl":"10.1016/j.solidstatesciences.2025.108114","url":null,"abstract":"&lt;div&gt;&lt;div&gt;Polyvinyl alcohol (PVA) can be improved in terms of optical and electrical properties by incorporating Si&lt;sub&gt;3&lt;/sub&gt;N&lt;sub&gt;4&lt;/sub&gt; (silicon nitride) and WC (tungsten carbide) nanoparticles. The incorporation of Si&lt;sub&gt;3&lt;/sub&gt;N&lt;sub&gt;4&lt;/sub&gt; and WC can further improve these properties, rendering the resulting material appropriate for a variety of applications, including optoelectronics and electronics. The casting technique is the method of producing nanocomposite. We were able to observe that the Si&lt;sub&gt;3&lt;/sub&gt;N&lt;sub&gt;4&lt;/sub&gt;-WC nanoparticles form an interconnected network within the purified PVA polymer using optical microscopy. Shifts in peak positions, the presence of physical interaction, and differences in size and shape are revealed by Fourier transform infrared spectroscopy (FTIR). Based on the electrical properties of alternating current, the dielectric loss value (&lt;em&gt;ε&lt;/em&gt;″) and dielectric constant (&lt;em&gt;ε&lt;/em&gt;′) of nanocomposites decrease as the frequency (f) increases. In spite of this, these values increase as the concentration of nanomaterials increases. Upon reaching a concentration of 5.1 wt percent of Si&lt;sub&gt;3&lt;/sub&gt;N&lt;sub&gt;4&lt;/sub&gt;-WC at 100 Hz, the electrical conductivity σa.c and the &lt;em&gt;ε&lt;/em&gt; ′ of PVA increased from 20 to 42 and 3 × 10&lt;sup&gt;−10&lt;/sup&gt; to 9 × 10&lt;sup&gt;−10&lt;/sup&gt; S/cm, respectively. The observed data indicates that the absorption of PVA saturated with Si3N4-WC NPs is markedly increased at a wavelength of 562 nm. Further, the energy gap of the permitted indirect transitions was reduced by an average of 50 % (from 4.2 to 2.6 eV), whereas the forbidden indirect transitions were reduced by approximately 120 % (from 3.89 to 1.6 eV). Pure PVA polymer exhibited an upward trend in optical properties as the quantity of Si&lt;sub&gt;3&lt;/sub&gt;N&lt;sub&gt;4&lt;/sub&gt;-WC NPs increased. Due to the improved electrical and structural properties of Si&lt;sub&gt;3&lt;/sub&gt;N&lt;sub&gt;4&lt;/sub&gt;-WC nanoparticles, PVA-Si&lt;sub&gt;3&lt;/sub&gt;N&lt;sub&gt;4&lt;/sub&gt;-WC nanostructures are highly desirable materials for a wide range of applications. Many optoelectronic devices, including solar cells, transistors, electronic gates, photovoltaic, lasers, diodes, and other related sectors, employ these materials. PVA-Si&lt;sub&gt;3&lt;/sub&gt;N&lt;sub&gt;4&lt;/sub&gt;-WC nanostructures exhibit high pressure sensitivity, exceptional flexibility, and high resistance to environmental factors in comparison to other sensors, as demonstrated by pressure sensor applications. PVA-Si&lt;sub&gt;3&lt;/sub&gt;N&lt;sub&gt;4&lt;/sub&gt;-WC nanocomposite films exhibit substantial attenuation coefficients in response to gamma ray exposure. As a consequence, the optical properties of the resulting nanocomposites were significantly enhanced by the addition of Si&lt;sub&gt;3&lt;/sub&gt;N&lt;sub&gt;4&lt;/sub&gt;-WC nanoparticles. Consequently, this material is considered a promising candidate for gamma-ray blocking and flexible optoelectronic applications.&lt;/div&gt;&lt;div&gt;Thus, the objective of this research is to create environmentally benign and cost-effective polyvinyl alcohol (PVA) nan","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":"170 ","pages":"Article 108114"},"PeriodicalIF":3.3,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145414890","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":"Computational design of Na2LiXF6 (X = Al, Ga, In, Tl) alkali halide perovskites for emerging optoelectronic technologies","authors":"Md. Mahin Tasdid ,&nbsp;Md. Rubayed Hasan Pramanik ,&nbsp;Aijaz Rasool Chaudhry ,&nbsp;Ahmad Irfan ,&nbsp;Nacer Badi ,&nbsp;Md. Ferdous Rahman","doi":"10.1016/j.solidstatesciences.2025.108133","DOIUrl":"10.1016/j.solidstatesciences.2025.108133","url":null,"abstract":"<div><div>This research employs density functional theory (DFT) within the GGA-PBE framework to investigate the structural, electronic, mechanical, and optical characteristics of lead-free fluoride-based double perovskites Na₂LiXF₆ (X = Al, Ga, In, Tl). All compounds are found to crystallize in a stable cubic Fm<span><math><mrow><mover><mn>3</mn><mo>‾</mo></mover></mrow></math></span>m structure, with Goldschmidt tolerance factors confirming their structural integrity. The materials exhibit direct band gaps at the Γ-point, which decrease progressively from 6.83 eV (for Al) to 3.32 eV (for Tl), indicating potential suitability for UV to near-visible optoelectronic applications. The calculated elastic constants verify mechanical stability, showing an increasing trend in ductility with heavier atomic masses. Optical evaluations demonstrate strong transparency in the UV region, distinct dielectric responses, and absorption and reflectivity patterns consistent with band gap variation. Overall, Na₂LiXF₆ compounds emerge as promising lead-free candidates for efficient optoelectronic device applications.</div></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":"170 ","pages":"Article 108133"},"PeriodicalIF":3.3,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145517872","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":"Magnetic and electronic properties of LiFe1-xGaxCr4O8 double spinel by Ga doping","authors":"E.P. Arévalo-López ,&nbsp;J. Pilo ,&nbsp;H. Muñoz ,&nbsp;J.M. Cervantes ,&nbsp;L. Huerta ,&nbsp;J.E. Antonio ,&nbsp;R. Valerio-Méndez ,&nbsp;J. Vargas-Bustamante ,&nbsp;E. Benitez-Flores ,&nbsp;Claire Minaud ,&nbsp;C. Cosio-Castañeda ,&nbsp;R. Escamilla ,&nbsp;M. Romero","doi":"10.1016/j.solidstatesciences.2025.108129","DOIUrl":"10.1016/j.solidstatesciences.2025.108129","url":null,"abstract":"<div><div>In this work, the solid solution of the double spinel LiFe_1-xGa_xCr₄O₈ was synthesized and characterized by X-ray diffraction, magnetic susceptibility measurements, UV–Vis–NIR spectroscopy, and X-ray photoelectron spectroscopy (XPS). Rietveld refinements show that the crystal structure is cubic with space group F <span><math><mrow><mover><mn>4</mn><mo>‾</mo></mover></mrow></math></span> 3m (No. 216), which is maintained as Fe is gradually substituted by Ga. The lattice parameter <em>a</em> and unit cell volume <em>V</em> decrease consistently due to the smaller ionic radius of Ga compared to Fe. Magnetic susceptibility data indicate that increasing Ga content reduces ferrimagnetic behavior while enhancing the antiferromagnetic component. From Density Functional Theory (DFT) calculations and using Hubbard-corrected Local Spin Density Approximation (LSDA + U) we observe that LiGaCr₄O₈ has a direct electronic band gap (E_g) of 1.73 eV at the Γ point. Additionally, UV–Vis–NIR spectroscopy reveals an increasing of the direct optical band gap (E_g) with increasing Ga concentration, from 1.43 eV at <em>x</em> = 0.25–1.54 eV at <em>x</em> = 1.00. XPS analysis of Li <em>1s</em>, Fe <em>3p</em>, Ga <em>3d</em>, Cr <em>3p</em>, and O <em>1s</em> core levels, together with the valence band (VB), reveals through detailed spectral deconvolution that the oxidation states of Li¹⁺, Fe³⁺, Ga³⁺, and Cr³⁺ remain constant throughout the solid solution.</div></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":"170 ","pages":"Article 108129"},"PeriodicalIF":3.3,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145463972","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":"Ar-irradiation effects on graphite thin film revealed from first-principles based simulations","authors":"Takashi Ikeda","doi":"10.1016/j.solidstatesciences.2025.108138","DOIUrl":"10.1016/j.solidstatesciences.2025.108138","url":null,"abstract":"<div><div>The Ar-irradiation effects on graphite thin film have been investigated using first-principles MD simulations. We introduced a novel damping medium to avoid artifacts due to periodic boundary conditions. This methodology allows to elucidate the detailed processes of the defect formation. We find that the irradiation of our graphite sample with 380 keV Ar tends to create di-vacancies in graphene sheets. This process is due to intralayer displacements of the C atom targeted by the incoming Ar. The inclusion of di-vacancies in the irradiated samples is proved by comparing our simulated Raman spectra with the experimental ones.</div></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":"170 ","pages":"Article 108138"},"PeriodicalIF":3.3,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145569174","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 influence of heavy valence band in Bi88Sb12","authors":"Bin He ,&nbsp;Haihua Hu ,&nbsp;Xiaolong Feng ,&nbsp;Claudia Felser","doi":"10.1016/j.solidstatesciences.2025.108109","DOIUrl":"10.1016/j.solidstatesciences.2025.108109","url":null,"abstract":"<div><div>Bi-Sb based topological insulators garnered significant research interest due to their role as a platform for investigating the topological surfaces states and achieving a high thermoelectric figure of merit at and below room temperature. However, electronic transport measurements yield contradictory results, particularly above nitrogen temperature. While zero-field transport exhibits a clear two-carrier signature, field-dependent transport reveals only a single-carrier signature. In this study, we systematically investigated the temperature and field dependent transport properties of Bi₈₈Sb₁₂ including <em>p</em>-type doped crystals. A distinct <em>p-n</em> transition is observed above 60 K, with the crystals exhibiting <em>n</em>-type behavior above 100 K regardless of doping. We propose that Bi₈₈Sb₁₂ is intrinsically close to an <em>n</em>-type semiconductor, a characteristic attributed to heavy T-holes that induce an asymmetric electronic structure between the conduction and valence bands.</div></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":"170 ","pages":"Article 108109"},"PeriodicalIF":3.3,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145517383","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":"Bandgap engineering of CIGS thin films via rapid thermal processing for photovoltaic applications","authors":"Sachin V. Desarada ,&nbsp;Shweta N. Chaure ,&nbsp;Vijaya S. Vallabhapurapu ,&nbsp;Sreedevi Vallabhapurapu ,&nbsp;Nandu B. Chaure","doi":"10.1016/j.solidstatesciences.2025.108131","DOIUrl":"10.1016/j.solidstatesciences.2025.108131","url":null,"abstract":"<div><div>We report a rapid thermal processing (RTP) technique for post-processing the selenization and sulfurization of CuInGaSe₂ (CIGS) thin films. CIGS films fabricated via RF-sputtering were exposed to cyclic RTP in elemental sulfur and selenium vapor atmospheres. Sulfurization was performed at 300–700 °C with multiple cycles of 10-s pulses, while selenization employed 350–450 °C. Comprehensive characterization using Raman spectroscopy, XRD with Rietveld refinement, SEM, UV–Vis spectroscopy, and EDS revealed controlled S/(S + Se) tuning from 0.10 to 0.63 during sulfurization and bandgap modulation from 1.08 to 1.24 eV. Single-phase CuInGa(S,Se)₂ formation was confirmed at 500 °C. Crystallite size increased from 27 nm for as-deposited to 78 nm for RTP annealed sample, with proportional microstrain reduction. RTP enables 50–60 % faster processing compared to conventional tube furnace methods, significantly reducing thermal budget while maintaining precise compositional control. This approach eliminates toxic H₂S and H₂Se gases, making it suitable for industrial-scale manufacturing of bandgap-engineered CIGS solar cells and tandem photovoltaic applications.</div></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":"170 ","pages":"Article 108131"},"PeriodicalIF":3.3,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145569112","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 flower-like zinc ferrite photoanode for enhanced photoelectrocatalytic water splitting effect of ammonium fluoride-assisted morphological control","authors":"R.A. Kadam ,&nbsp;S.B. Madake ,&nbsp;M.A. Yewale ,&nbsp;A.A. Jadhawar ,&nbsp;S.A. Alshehri ,&nbsp;R. Venkatesan ,&nbsp;D.K. Shin ,&nbsp;Minjae Kim","doi":"10.1016/j.solidstatesciences.2025.108115","DOIUrl":"10.1016/j.solidstatesciences.2025.108115","url":null,"abstract":"<div><div>In this study, hierarchical ZnFe₂O₄ nanostructures were synthesized via a hydrothermal method using ammonium fluoride (NH₄F) as a morphology-directing agent. By varying NH₄F concentrations (30–120 mM), we successfully modulated the material morphology from agglomerated nanoparticles to highly ordered flower-like architectures. Comprehensive structural and morphological analyses confirmed the formation of phase-pure spinel ZnFe₂O₄ with tailored crystal orientation and reduced lattice strain. Among the samples, the ZF-AF-120mM nanostructure, composed of radially assembled nanosheets, exhibited outstanding photoelectrochemical (PEC) performance for solar water splitting. It delivered a peak photocurrent density of 6.25 mA cm⁻² at 1.3 V vs. Ag/AgCl and an applied bias photon-to-current efficiency (ABPE) of 0.45 %, along with excellent stability (61.1 % retention over 2h). Electrochemical impedance spectroscopy revealed the lowest charge transfer resistance (R_ct = 16.09 Ω) for ZF-AF-120mM, indicating enhanced charge transport and reduced recombination. The exceptional PEC activity is attributed to the hierarchical nanoflower morphology, which promotes superior light harvesting, increased surface area, and efficient charge carrier dynamics. These results underscore the crucial role of NH₄F-mediated morphology engineering in optimizing spinel ferrite photoanodes for efficient and durable solar-driven hydrogen generation.</div></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":"170 ","pages":"Article 108115"},"PeriodicalIF":3.3,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145463971","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":"Impact of Ni substitution at Mn site in Nd2CoMnO6: Insights into structural, magnetic, and magnetocaloric properties","authors":"Nibedita Nayak,&nbsp;S. Ravi","doi":"10.1016/j.solidstatesciences.2025.108106","DOIUrl":"10.1016/j.solidstatesciences.2025.108106","url":null,"abstract":"<div><div>The bulk Nd₂CoMn_1-<em>x</em>Ni_<em>x</em>O₆ (<em>x</em> = 0.0–0.4) (NCMNO) compounds were prepared by the solid-state reaction approach. Analysis of X-Ray diffraction patterns confirmed the formation of a single-phase monoclinic structure for all samples with a space group of P2₁/n. Long-range ferromagnetic (FM) ordering with a transition temperature (<span><math><mrow><msub><mi>T</mi><mrow><mi>C</mi><mn>1</mn></mrow></msub></mrow></math></span>) of 161 <em>K</em> is observed for <em>x</em> = 0.0 sample and it increases to 170 <em>K</em> for <em>x</em> = 0.1. The <span><math><mrow><msub><mi>T</mi><mrow><mi>C</mi><mn>1</mn></mrow></msub></mrow></math></span> value decreases from 167 <em>K</em> for <em>x</em> = 0.2–146 <em>K</em> for <em>x</em> = 0.4. Interestingly, a second magnetic transition (<span><math><mrow><msub><mi>T</mi><mrow><mi>C</mi><mn>2</mn></mrow></msub></mrow></math></span>) emerges at 177 <em>K</em> for <em>x</em> = 0.3 and it shifts to 185 <em>K</em> for <em>x</em> = 0.4. All samples exhibit a downward trend in magnetic susceptibility with decreasing temperature, indicating short-range FM interactions in the paramagnetic (PM) region and pointing to the presence of Griffiths phase in the PM region. At 5 <em>K</em>, isothermal magnetization loops are recorded and the saturation magnetization (<span><math><mrow><msub><mi>M</mi><mi>S</mi></msub></mrow></math></span>) values are estimated using the Law of Approach to Saturation model. The value of <span><math><mrow><msub><mi>M</mi><mi>S</mi></msub></mrow></math></span> is calculated to be 54.5 <em>emu/g</em> for the parent sample, which reduced to 24.4 <em>emu/g</em> for <em>x</em> = 0.4 sample. The magnetocaloric effect is also analysed by determining the change in magnetic entropy (<span><math><mrow><mo>−</mo><msub><mrow><mo>Δ</mo><mi>S</mi></mrow><mi>M</mi></msub></mrow></math></span>), which shows a peak at the transition temperature and it increases with applied magnetic field. A maximum <span><math><mrow><mo>−</mo><msub><mrow><mo>Δ</mo><mi>S</mi></mrow><mi>M</mi></msub></mrow></math></span> value at 9 <em>T</em> field is calculated to be 3.71 J/kg.K for <em>x</em> = 0.1 sample. Additionally, relative cooling power (RCP) and temperature averaged entropy change (TEC) are calculated for refrigeration relevance. The second order nature of phase transition is confirmed by Arrott plots and is further supported by the analysis of the power law exponent n. The variation of n with field and temperature (N (T, H)) is also calculated for both the samples.</div></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":"170 ","pages":"Article 108106"},"PeriodicalIF":3.3,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145414891","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 of novel N,S-rGO/MnFe2O4 nanocomposites with high photocatalytic activity for nitro group removal from toxic nitroaromatic compounds","authors":"Farshid Salimi Nanekaran,&nbsp;Ali Oji Moghanlou,&nbsp;Sahand Salamati","doi":"10.1016/j.solidstatesciences.2025.108104","DOIUrl":"10.1016/j.solidstatesciences.2025.108104","url":null,"abstract":"<div><div>This study introduces the synthesis of innovative N,S-rGO/MnFe₂O₄ nanocomposites designed for the photocatalytic reduction of toxic nitroaromatic pollutants into their aminoaromatic counterparts. Utilizing a hydrothermal approach, graphene oxide undergoes reduction to its reduced form (rGO) while nitrogen and sulfur are doped into its framework and MnFe₂O₄ nanoparticles are incorporated between its layers. Comprehensive structural and optical characterizations, including FT-IR, XPS, XRD, SEM, TEM, UV–vis DRS, EDS, photoluminescence spectroscopy, and electrochemical impedance spectroscopy, confirmed the successful doping and uniform integration of MnFe₂O₄ nanoparticles. The synthesized nanocomposites exhibited outstanding photocatalytic efficiency under visible-light irradiation, achieving a remarkable 100 % conversion of nitrobenzene to aniline within just 45 min, with hydrazine monohydrate serving as the hydrogen source. Furthermore, the developed photocatalyst demonstrated exceptional stability and recyclability, maintaining its structural integrity and catalytic effectiveness over eight consecutive significant degradation.</div></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":"170 ","pages":"Article 108104"},"PeriodicalIF":3.3,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145414960","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}