Journal of Sol-Gel Science and Technology最新文献

{"title":"Electrocatalytic oxidation of methanol and ethanol on CoNi₂O₄/MXene hybrid catalysts for direct alcohol fuel cells","authors":"Fatemeh Jamali,&nbsp;Majid Seifi,&nbsp;Mohammad Bagher Askari","doi":"10.1007/s10971-026-07117-z","DOIUrl":"10.1007/s10971-026-07117-z","url":null,"abstract":"<div><p>The escalating demand for sustainable energy amid fossil fuel depletion and environmental crises has propelled research into advanced electrocatalysts for direct alcohol fuel cells (DAFCs). This study introduces a pioneering CoNi₂O₄/MXene nanocomposite, synthesized via a one-step hydrothermal method, as a high-performance anode catalyst for the methanol oxidation reaction (MOR) and ethanol oxidation reaction (EOR), outperforming pristine CoNi₂O₄. Unlike prior works focusing on single-metal or loosely integrated composites such as nickel ferrite/MXene or Ni nanoparticles on Mxene this hybrid uniquely leverages the spinel structure of CoNi₂O₄ with its mixed oxidation states (Co²⁺/Co³⁺ and Ni²⁺/Ni³⁺) and MXene’s (Ti₃C₂) layered conductivity, achieving unprecedented synergy for enhanced electron transfer, active site exposure, and CO poisoning resistance. Physical analyses (XRD, FESEM, BET) confirmed successful integration, revealing a doubled specific surface area (109.36 vs. 61.64 m²/g) and porous fibrous morphology. Electrochemical evaluations showed superior activity with significantly enhanced peak current densities and lower oxidation potentials for both MOR and EOR compared to pristine CoNi₂O₄, alongside exceptional stability (94.6% and 91.6% retention after 1000 cycles at 100 mV/s). Lower Tafel slopes (138 mV/dec for MOR, 72.6 mV/dec for EOR) and reduced charge transfer resistance (&lt;7 Ω) underscore its edge over noble metal alternatives. This transformative design not only addresses scalability and durability gaps in existing catalysts but also paves the way for cost-effective, efficient DAFCs in renewable energy applications.</p><div><figure><div><div><picture><source><img></source></picture><span>The alternative text for this image may have been generated using AI.</span></div></div></figure></div></div>","PeriodicalId":664,"journal":{"name":"Journal of Sol-Gel Science and Technology","volume":"118 3","pages":""},"PeriodicalIF":3.2,"publicationDate":"2026-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10971-026-07117-z.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148010062","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effects of Sm+3 and La+3 substitution on the structural, elastic, thermal, and magnetic properties of iron cobaltite for advanced applications","authors":"Aicha Loucif,&nbsp;Jawza Sh Alnawmasi,&nbsp;Safia Alleg","doi":"10.1007/s10971-026-07178-0","DOIUrl":"10.1007/s10971-026-07178-0","url":null,"abstract":"<div><p>This study examines the structural, morphological, elastic, thermal, and magnetic properties of FeCo₂O₄ (FCO), FeSm_0.01Co_1.99O₄ (Sm-FCO), and FeLa_0.01Co_1.99O₄ (La-FCO) spinel ferrite powders synthesized via the sol-gel method. XRD analysis reveals a dominant cubic spinel phase, with secondary phases resulting from limited rare-earth solubility. In addition, doping with La and Sm induces lattice expansion and increased crystallite size. FESEM shows grain growth with rare-earth doping, while FTIR spectra indicate small shifts in M-O vibrational modes, with an additional band at ~ 650 cm^-1 in Sm-FCO linked to a hexagonal Sm phase. Elastic and thermal analysis reveal lattice softening in Sm-FCO and enhancement in La-FCO. Room-temperature magnetic hysteresis loops were fitted with ferromagnetic (FM) and paramagnetic (PM) contributions. FCO and La-FCO samples show dominant FM behavior, with saturation magnetization of 46.6 emu/g and 22.7 emu/g, respectively. In contrast, Sm-FCO exhibits PM behavior and negligible saturation magnetization (0.059 emu/g), attributed to a secondary hexagonal Sm phase. The microwave resonance frequencies are X-band (8-12 GHz) for FCO and C-band (4-8 GHz) for La-FCO, highlighting their potential for high-frequency applications such as radar and satellite communications.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture><span>The alternative text for this image may have been generated using AI.</span></div></div></figure></div></div>","PeriodicalId":664,"journal":{"name":"Journal of Sol-Gel Science and Technology","volume":"118 3","pages":""},"PeriodicalIF":3.2,"publicationDate":"2026-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10971-026-07178-0.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148009889","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"La-doped CdS/SnO2 double electron transport layer for Sb2S3 solar cells","authors":"Siyu Zhang,&nbsp;Ruitao He,&nbsp;Chaomin Cai,&nbsp;Yuxia Sun,&nbsp;Ruiming Li,&nbsp;Man Yang,&nbsp;Hongri Liu","doi":"10.1007/s10971-025-07072-1","DOIUrl":"10.1007/s10971-025-07072-1","url":null,"abstract":"<div><p>Antimony sulfide (Sb₂S₃) is a highly promising environmentally friendly semiconductor for the development of stable thin-film solar cells, owing to its high absorption coefficient, suitable bandgap ( ~ 1.7 eV), and the abundance of its constituent elements. Conventionally, CdS is employed as a buffer layer in CdS/Sb₂S₃/spiro/Au-structured solar cells. However, due to its intrinsic defects, various strategies have been implemented to enhance device performance and improve the power conversion efficiency (PCE) of Sb₂S₃ solar cells. In this study, we first fabricated a SnO₂ electron transport layer (ETL) and subsequently optimized the water bath temperature to achieve a smoother CdS layer. Furthermore, a La³⁺ ion doping process was introduced to further decrease the resistance of the CdS layer. The incorporation of an appropriate concentration of La³⁺ into the CdS layer effectively redeced its resistivity. By integrating these enhancements, we developed a La-doped CdS/SnO₂ double ETL structure. The grain size of Sb₂S₃ deposited on the 1% La-doped CdS/SnO₂ double ETL was significantly increased, leading to a substantial reduction in grain boundary density. This improvement minimized non-radiative recombination at both the grain boundaries and the CdS/Sb₂S₃ heterointerface while simultaneously enhancing charge-carrier transport across the heterojunction. Consequently, the optimized solar cell achieved an open-circuit voltage (V_OC) of 749 mV and a short-circuit current density (J_s_c) of 17.01 mA/cm², resulting in a power conversion efficiency (PCE) of 7.66%. This work presents an effective doping strategy to enhance the performance of the CdS buffer layer, offering valuable insights for the advancement of Sb₂S₃-based thin-film solar cells.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture><span>The alternative text for this image may have been generated using AI.</span></div></div></figure></div></div>","PeriodicalId":664,"journal":{"name":"Journal of Sol-Gel Science and Technology","volume":"118 3","pages":""},"PeriodicalIF":3.2,"publicationDate":"2026-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10971-025-07072-1.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148009888","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The role of individual Er and Tb incorporation in CO2 gas-sensing properties of hydrothermally grown ZnO nanorods","authors":"Fatih Bulut,&nbsp;Özgür Öztürk,&nbsp;Şükrü Çelik,&nbsp;Gürcan Yıldırım,&nbsp;Selim Acar","doi":"10.1007/s10971-026-07183-3","DOIUrl":"10.1007/s10971-026-07183-3","url":null,"abstract":"<div><p>This study systematically investigated the role of independently doped Erbium (Er) and Terbium (Tb) incorporation on the structural, morphological, optical, and carbon dioxide (CO₂) gas-sensing properties of ZnO nanorods synthesized by the hydrothermal method with dopant concentrations of 0, 1, 3, 5, and 7 wt%. X-ray diffraction (XRD) analysis confirmed the successful substitutional incorporation of Er and Tb ions into the ZnO lattice, preserving the hexagonal wurtzite structure without the formation of secondary phases, except at the highest Tb concentration. These findings are in good agreement with scanning electron microscopy (SEM) results, which revealed vertically aligned ZnO nanorods with uniform spatial distribution and apparent diameters below 100 nm. Further, dopant incorporation significantly influenced nanorod morphology and interfacial characteristics, including variations in diameter uniformity, surface charge homogeneity, and ZnO shell composition and thickness due to differences in ionic radii, valence states, and outer-shell electron configurations of the Er³⁺ and Tb³⁺ dopant ions. This modified local strain fields and defect chemistry within the ZnO matrix. Optical characterization also showed a systematic reduction in optical bandgap energy with increasing dopant content. This is consistent with bandgap narrowing induced by enhanced carrier concentration and defect-related band tailing, accompanied by noticeable changes in optical transmittance. CO₂ gas-sensing experiments displayed that rare-earth doping markedly enhanced sensor performance compared to that of undoped ZnO nanorods. In particular, 5 wt% Er-doped semiconductor exhibited the highest sensitivity, along with rapid response and recovery times, indicating an optimal balance between surface reactivity, charge transport, and defect-mediated adsorption-desorption dynamics. To sum up, the experimental results and theoretical approach obtained highlighted Er- and Tb-doped ZnO nanorods as promising low-cost, chemically stable, and high-performance sensing materials for CO₂ detection in environmental and industrial monitoring applications.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture><span>The alternative text for this image may have been generated using AI.</span></div></div></figure></div></div>","PeriodicalId":664,"journal":{"name":"Journal of Sol-Gel Science and Technology","volume":"118 3","pages":""},"PeriodicalIF":3.2,"publicationDate":"2026-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10971-026-07183-3.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148009327","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Hierarchical nanoconfinement in a green chitosan-copper oxide nanocomposite decouples cytotoxicity from pro-healing bioactivity","authors":"Aml Mahmoud Mohammed,&nbsp;A. M. Ahmed,&nbsp;H. F. Mohamed,&nbsp;Walaa M. Abd El-Raheem,&nbsp;Alaa Hassan Said","doi":"10.1007/s10971-026-07184-2","DOIUrl":"10.1007/s10971-026-07184-2","url":null,"abstract":"<div><p>The therapeutic use of copper oxide nanoparticles for wound healing is limited by intrinsic cytotoxicity arising from uncontrolled Cu²⁺ release. This study reports a hierarchical nanocomposite design that decouples bioactivity from cytotoxicity via green sol–gel synthesis followed by polymer-mediated nanoconfinement. Green synthesis using <i>Rhus coriaria</i> (sumac) extract contributed to structural changes through two primary mechanisms: (i) phytochemicals adsorbed to growing crystal surfaces, limiting Ostwald ripening and restricting crystallite growth; (ii) incorporation of organic capping agents induced lattice distortions during nucleation. Williamson-Hall analysis revealed a 54% reduction in crystallite size (to 13.7 nm) and an 89% increase in lattice microstrain (ε = 4.81 × 10^-3) compared to conventionally synthesized CuO NPs. These green-synthesized CuO NPs were encapsulated within a chitosan matrix via coordination chemistry. X-ray diffraction showed severe attenuation of CuO Bragg peaks, confirming nanoconfinement of crystalline domains below 5 nm. Fourier-transform infrared spectroscopy revealed a hypsochromic shift of the amide I band from 1653 cm^–1 to 1567 cm^–1, evidencing interfacial Cu²⁺–NH₂coordination. At 125 µg/mL, the nanocomposite maintained 94.0% viability in human dermal fibroblasts versus 4.9% for bare CuO NPs, while enhancing fibroblast migration by 44% and achieving 85.4% in vitro wound closure over 48 h. The nanocomposite also exhibited broad-spectrum antibacterial activity (inhibition zones up to 20 mm), comparable to gentamicin. This work demonstrates that green sol–gel synthesis combined with polymer nanoconfinement produces a hierarchical chitosan-CuO hybrid that balances safety and efficacy, offering a generalizable design strategy for metal-oxide nanotherapeutics.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture><span>The alternative text for this image may have been generated using AI.</span></div></div></figure></div></div>","PeriodicalId":664,"journal":{"name":"Journal of Sol-Gel Science and Technology","volume":"118 3","pages":""},"PeriodicalIF":3.2,"publicationDate":"2026-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10971-026-07184-2.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147968159","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Morphological, chemical, structural and thermal features of yttria-stabilized zirconia powders synthesized by sol-gel","authors":"Antonio Díaz-Parralejo,&nbsp;David Maya-Retamar,&nbsp;María F. Alexandre-Franco,&nbsp;Angel L. Ortiz,&nbsp;Eduardo M. Cuerda-Correa","doi":"10.1007/s10971-026-07181-5","DOIUrl":"10.1007/s10971-026-07181-5","url":null,"abstract":"<div><p>Despite YSZ being a mature ceramic system, powder-level control of phase composition, crystallite size, surface chemistry, and pore hierarchy remains decisive for current processing routes and applications (e.g., electrolyte and electrode fabrication, thermal spray feedstock conditioning, and functional coatings). Powders of ZrO₂ stabilized with 3, 9, or 12 mol% Y₂O₃ (YSZ) were synthesized by a controlled sol–gel route and characterized after drying at 100 °C and calcination at 500 °C by field-emission scanning electron microscopy, N₂ adsorption, Fourier-transform infrared spectroscopy, X-ray diffractometry (XRD; including Rietveld refinement), and thermogravimetry (TG)-differential scanning calorimetry (DSC) coupled to mass spectrometry (MS). Drying at 100 °C yields predominantly microporous powders with high surface areas that decrease markedly with yttria content (Specific surface area, SSA ≈ 219, 108, and 98 m²·g⁻¹ for 3YSZ-100, 9YSZ-100, and 12YSZ-100, respectively), whereas calcination at 500 °C produces a micro-to-mesopore transition with strongly reduced porous development (SSA ≈ 35, 35, and 22 m²·g⁻¹ for 3YSZ-500, 9YSZ-500, and 12YSZ-500). XRD confirms amorphous character at 100 °C and crystallization at 500 °C, with 3YSZ-500 containing a mixed tetragonal/cubic assemblage (66.8/33.2 wt%) while 9YSZ-500 and 12YSZ-500 are cubic; crystallite sizes decrease from ~12 to ~6–7 nm as Y₂O₃-doping increases. TG-DSC-MS identifies dopant-dependent decomposition/oxidation events (CO₂ evolution near ~315 °C and ~480 °C) that rationalize the transition from an organics-containing amorphous network to a crystalline oxide lattice and the attendant collapse of microporosity. These results provide a composition-resolved correlation between pore hierarchy, crystallization/phase assemblage, and thermal decomposition pathways under identical sol–gel processing conditions.</p><div><figure><div><div><picture><source><img></source></picture><span>The alternative text for this image may have been generated using AI.</span></div></div></figure></div></div>","PeriodicalId":664,"journal":{"name":"Journal of Sol-Gel Science and Technology","volume":"118 2","pages":""},"PeriodicalIF":3.2,"publicationDate":"2026-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10971-026-07181-5.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147938476","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Green synthesis of gold nanoparticles using Garcinia mangostana peel extract: characterization and catalytic, antimicrobial, antioxidant, and anticancer activities","authors":"P. Georgia Chris Selwyna,&nbsp;N. Nithyavathy","doi":"10.1007/s10971-026-07176-2","DOIUrl":"10.1007/s10971-026-07176-2","url":null,"abstract":"<div><p>The preparation of nanoparticles through sustainable chemical practices offers an eco-friendly and feasible route to advanced nanomaterials. In this study, gold nanoparticles (Au-NPs) were synthesized using <i>Garcinia mangostana</i> (GM) peel extract, which is rich in antioxidants and provides biomolecules acting as bio-reductants, capping, and stabilizing agents. The synthesized Au-NPs were characterized by X-Ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), UV–Vis spectroscopy, scanning electron microscopy (SEM), and photoluminescence (PL) spectroscopy. XRD confirmed the face-centered cubic structure of Au-NPs, while UV–Vis spectra exhibited a characteristic absorption peak around 540 nm. TEM images revealed polydispersed nanoparticles with diverse shapes and sizes. FTIR analysis indicated the presence of phenols, flavonoids, benzophenones, and anthocyanins, suggesting their role in the reduction and stabilization of Au-NPs. The catalytic activity of Au-NPs was demonstrated by the effective degradation of Fuchsin Basic dye, achieving up to 89% clearance efficiency under optimized conditions. Parameters such as catalyst dosage, scavenger activity, and the effect of electrolytes were systematically investigated. Furthermore, the Au-NPs exhibited significant antibacterial, antifungal, antioxidant, and cytotoxic activities, with pronounced cytotoxic effects against HepG2 cancer cells. Overall, the green-synthesized Au-NPs demonstrated excellent photocatalytic, antimicrobial, antioxidant, and anticancer properties, highlighting their potential for diverse applications in nano-biomedicine.</p><div><figure><div><div><picture><source><img></source></picture><span>The alternative text for this image may have been generated using AI.</span></div></div></figure></div></div>","PeriodicalId":664,"journal":{"name":"Journal of Sol-Gel Science and Technology","volume":"118 2","pages":""},"PeriodicalIF":3.2,"publicationDate":"2026-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10971-026-07176-2.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147938475","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Influence of copper incorporation on structure and cell-type specific cytocompatibility of sol–gel-derived 13–93 bioactive glass for potential soft tissue applications","authors":"Aylin M. Deliormanlı,&nbsp;Harika Atmaca","doi":"10.1007/s10971-026-07174-4","DOIUrl":"10.1007/s10971-026-07174-4","url":null,"abstract":"<div><p>Copper (Cu²⁺)-containing silicate-based 13-93 bioactive glasses were synthesized via the sol–gel method to investigate their physicochemical properties and in vitro cytocompatibility. CuO contents ranging from 0.5 to 5 wt% were incorporated into 13-93 bioactive glass powders, which were characterized for particle size, structural integrity, and hydroxyapatite formation in simulated body fluid (SBF) and phosphate-buffered saline (PBS). Disc-shaped scaffolds were fabricated and tested on three distinct human cell lines: gastric adenocarcinoma (AGS), intestinal fibroblasts (HIF), and embryonic kidney epithelial cells (HEK-293). Cu²⁺ incorporation up to 5 wt% did not hinder hydroxyapatite formation, associated with reduced network connectivity. Cytotoxicity assays revealed a cell-type and concentration-dependent response, with HIF fibroblasts being most sensitive ( ≥1 wt% Cu²⁺), AGS cells exhibiting moderate tolerance, and HEK-293 cells maintaining stable viability across all optimized concentrations ( ≤1.5 wt%). Morphological observations of fibroblasts and AGS cells were consistent with the MTT assay results, indicating differences in cell viability under the tested conditions. These results highlight the critical importance of cell-type-specific evaluation when optimizing Cu²⁺ content for biomedical applications. Overall, Cu²⁺-containing 13-93 bioactive glasses demonstrate potential as therapeutic scaffolds for gastrointestinal tissue repair and ulcer treatment, with an optimal Cu²⁺ incorporation range of 0.5–1.5 wt% to ensure cytocompatibility across diverse cell types.</p><div><figure><div><div><picture><source><img></source></picture><span>The alternative text for this image may have been generated using AI.</span></div></div></figure></div></div>","PeriodicalId":664,"journal":{"name":"Journal of Sol-Gel Science and Technology","volume":"118 2","pages":""},"PeriodicalIF":3.2,"publicationDate":"2026-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10971-026-07174-4.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147938517","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A rapid sustainable sol-gel synthesis of phase-pure BaTiO₃ nanostructures with minimal energy demand","authors":"I. E. Correa,&nbsp;J. A. Ascencio,&nbsp;S. E. Borjas,&nbsp;A. Medina","doi":"10.1007/s10971-026-07172-6","DOIUrl":"10.1007/s10971-026-07172-6","url":null,"abstract":"<div><p>The present work reports the production of BaTiO₃ ceramic nanostructures through a sustainable sol-gel synthesis route that drastically reduces energy demand while improving phase purity. Two synthesis strategies were compared: (A) a conventional route based on Ba(OH)₂ under controlled humidity and inert conditions, and (B) a modified route employing BaCl₂ as precursor under ambient atmosphere. This optimized method achieved an ~81% reduction in energy consumption, decreasing synthesis from 180 °C for 24 h to 130 °C for 3 h. Importantly, carbon-related impurities were significantly suppressed, obviating the need for post-synthesis acid washing treatments. Structural and morphological analyses (FT-IR, XRD with Rietveld refinement, FE-SEM, chemical mapping, and BET) confirmed enhanced phase purity, a drastic reduction in particle size (~100 nm to ~25 nm), and high surface area (&gt;50 m²/g). This method provided a scalable and environmentally responsible pathway that allows the scalable production of high-purity BaTiO₃, advancing sustainable materials processing for electronic and energy-related applications.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture><span>The alternative text for this image may have been generated using AI.</span></div></div></figure></div></div>","PeriodicalId":664,"journal":{"name":"Journal of Sol-Gel Science and Technology","volume":"118 2","pages":""},"PeriodicalIF":3.2,"publicationDate":"2026-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10971-026-07172-6.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147938638","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Sol–gel fabrication of nickel-substituted MnO catalysts for the photodegradation of 2-methoxybenzaldehyde","authors":"Divya Katal,&nbsp;Gunika Kour,&nbsp;Anand Somvanshi,&nbsp; Suman,&nbsp;Azad Quyoom Malik,&nbsp;Vaseem Raja,&nbsp;Karthikeyan Ravi,&nbsp;Abdulrhman Alsayari,&nbsp;Shadma Wahab,&nbsp;Rohit Jasrotia","doi":"10.1007/s10971-026-07166-4","DOIUrl":"10.1007/s10971-026-07166-4","url":null,"abstract":"<div><p>Manganese oxide (MnO) and nickel-doped manganese oxide (Ni–MnO) nanoparticles were synthesized via a cost-effective sol–gel method and comprehensively characterized using FTIR, XRD, FESEM, and HRTEM analyses. XRD confirmed the crystalline structure and average crystallite size, while FESEM and HRTEM revealed the morphology and nanoscale dimensions, with particle sizes ranging from 18 to 25 nm. The synthesized nanoparticles were evaluated for their photocatalytic efficiency in the degradation of 2-methoxybenzaldehyde. Under optimized catalyst dosage and constant experimental parameters (pH, pollutant concentration, and reaction time), the Ni–MnO nanoparticles exhibited remarkable photocatalytic performance, achieving over 92% degradation. Furthermore, the catalyst maintained high activity under alkaline conditions, with ~85% degradation observed at pH 12. Comparative analysis indicates that Ni doping significantly enhances the photocatalytic activity of MnO nanoparticles, making Ni–MnO a promising candidate for the efficient degradation of organic pollutants in wastewater treatment applications.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture><span>The alternative text for this image may have been generated using AI.</span></div></div></figure></div></div>","PeriodicalId":664,"journal":{"name":"Journal of Sol-Gel Science and Technology","volume":"118 2","pages":""},"PeriodicalIF":3.2,"publicationDate":"2026-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10971-026-07166-4.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147797233","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}