Journal of Sol-Gel Science and Technology最新文献

{"title":"Ammonium fluoride-catalyzed sol‒gel route for curcumin encapsulation: potential application for pH sensor development","authors":"Paula C. Kazmirczak,&nbsp;Matheus C. Cichero,&nbsp;João Henrique Z. dos Santos","doi":"10.1007/s10971-025-06721-9","DOIUrl":"10.1007/s10971-025-06721-9","url":null,"abstract":"<div><p>Curcumin has potential application as a colorimetric sensor and can be used to monitor the freshness of foods; however, some of its physicochemical properties, such as its solubility and stability, limit its use. In the present work, a natural curcumin extract was incorporated into organic‒inorganic hybrid silica matrices produced by the sol-gel method using ammonium fluoride as the main catalyst. Curcumin was encapsulated in the presence of a series of organosilanes (methytriethoxysilane, octyltriethoxysilane, octadecyltrimethoxysilane and 3-(aminopropyltriethoxysilane); this resulted in a set of hybrid silicas that were characterized by a series of complementary analytical techniques. The immobilization of the compounds in a solid matrix could cause a shift in the maximum absorption bands in the ultraviolet‒visible region due to the interactions between the organic molecules and the solid support. When curcumin was incorporated into silica, a small disturbance in the percentage of cyclic siloxane arrangements was observed. Nitrogen porosimetry demonstrated that the pore structures remained similar to those of the respective matrices; however, significant variation was observed in the porosities of these materials, and the specific areas varied between 211.1 m²g⁻¹ and 551.2 m²g⁻¹. The incorporation of curcumin into different silica matrices improved the performance of the sensors for ammonia detection by up to 3.5 times greater than that obtained by the free compound.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":664,"journal":{"name":"Journal of Sol-Gel Science and Technology","volume":"114 3","pages":"731 - 741"},"PeriodicalIF":2.3,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144091140","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Hybrid silica aerogels from bridged silicon alkoxides: ultralow thermal conductivity for low-temperature applications","authors":"A. M. Abebe,&nbsp;M. Biesuz,&nbsp;C. Vakifahmetoglu,&nbsp;M. Cassetta,&nbsp;G. D. Sorarù","doi":"10.1007/s10971-025-06724-6","DOIUrl":"10.1007/s10971-025-06724-6","url":null,"abstract":"<div><p>Hybrid silica aerogels are promising materials for thermal insulation applications. Highly porous aerogels were synthesized from bridged bis(triethoxysilyl)methane BTEM and triethoxysilane TREOS silicon alkoxides via the sol‒gel process. The carbon content in the hybrid aerogels decreased with increasing amounts of TREOS. Crack-free monolith aerogels were synthesized through supercritical drying, which is crucial for thermal and optical investigations. The aerogels are characterized by high BET surface areas ranging from 700 to 1400 m²/g, pore volumes between 2.0 and 10.5 cm³/g, and a maximum porosity of 95%. The thermal conductivity of the aerogels at room temperature was measured via a hot disk apparatus. The materials exhibited ultralow thermal conductivity, reaching a minimum value of 15 mW/mK. This value ranks among the lowest reported values for silica-based aerogels in the literature. Optical transmittance measurements indicated high transparency, exceeding 80% in the visible region. Therefore, these exceptional properties of low density, high optical transparency, and low thermal conductivity make these materials promising candidates for transparent insulation applications.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":664,"journal":{"name":"Journal of Sol-Gel Science and Technology","volume":"114 3","pages":"1117 - 1126"},"PeriodicalIF":2.3,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10971-025-06724-6.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144091141","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":"Excellent photocatalytic activity of ZnO-NiO heterojunction thin film in the sunlight range with enhanced of UV photodetection behavior","authors":"Meriem Gasmi,&nbsp;Abdelkader Djelloul,&nbsp;Sabrina Iaiche,&nbsp;Khemissi Lahouel,&nbsp;Nilgun Baydogan","doi":"10.1007/s10971-025-06728-2","DOIUrl":"10.1007/s10971-025-06728-2","url":null,"abstract":"<div><p>Herein, we investigated the photocatalytic activity and photoresponse of pristine ZnO and NiO, as well as ZnO-NiO heterojunction grown by the sol-gel dip-coating method on glass substrates. The obtained samples were characterized via X-ray diffraction (XRD), field-emission scanning electron microscopy (FE-SEM), energy-dispersive X-ray spectroscopy (EDS), high-resolution atomic force microscopy (AFM), and UV–vis spectroscopy. Structural, optical, and morphological studies have demonstrated the presence of two phases of zinc and nickel oxides. The photocatalytic activity of the coatings was evaluated by methylene blue (MB) degradation under natural sunlight illumination for 150 min. The p-n ZnO-NiO heterojunction enhanced the degradation rates, exhibiting superior photocatalytic activity by degrading 96.73% in 150 min compared to pristine ZnO (74.56%), and pristine NiO (42.83%). Furthermore, the thin film demonstrated higher stability, reusability, and recoverability after five cyclic tests, rendering it suitable for wastewater purification. Based on the sensitivity, responsivity, and detectivity of the ZnO-NiO heterojunction sample to light, exposure to UV light irradiates the photocatalysts to generate electrons and holes, thus inducing a photocurrent.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":664,"journal":{"name":"Journal of Sol-Gel Science and Technology","volume":"114 3","pages":"699 - 717"},"PeriodicalIF":2.3,"publicationDate":"2025-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144091044","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Lowering the combustion temperature of organic components in organosiloxane gels by an incorporation of copper ions","authors":"Naonobu Oura,&nbsp;Arisa Fukatsu,&nbsp;Kenji Okada,&nbsp;Kazutaka Kamitani,&nbsp;Masahide Takahashi","doi":"10.1007/s10971-025-06718-4","DOIUrl":"10.1007/s10971-025-06718-4","url":null,"abstract":"<div><p>The sol-gel method enables glass fabrication at significantly lower temperatures than conventional methods such as the melt-quenching processes. However, heat treatment at high temperatures is still required to remove organic residues and densify the structure. Lowering the combustion temperatures of gels derived by the sol-gel method can provide not only industrial benefits but also environmental ones. In the present work, we investigated the catalytic effect of Cu compounds on lowering the combustion temperature of organic residues, thereby facilitating the removal of organic residues at reduced temperatures. Specifically, the role of Cu²⁺ as a catalyst for the decomposition of organic groups within siloxane structures was focused. Methylsiloxane, which contains methyl groups attached to the siloxane side chain, was used as a model compound to quantitatively evaluate the catalytic effect of Cu²⁺ in lowering the combustion temperature of methyl groups. Methylsiloxane powders were synthesized via the sol-gel method, and Cu²⁺-doped methylsiloxane powders were prepared by incorporating copper sources such as Cu(NO₃)₂ or others into the precursor solution. Thermogravimetric-differential thermal analysis (TG-DTA) and Fourier-transform infrared (FT-IR) spectroscopy revealed that the Si-CH₃ bonds in the Cu-doped powders underwent combustion and decomposition at significantly lower temperatures compared to those in undoped methylsiloxane powders. These findings demonstrate that Cu can effectively catalyze the low-temperature combustion of organic components. The present finding has the potential to enable silica glass fabrication at lower temperatures than previously achievable, thereby reducing energy consumption. Additionally, it offers promising opportunities for expanding the applicability of glass materials to new domains.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":664,"journal":{"name":"Journal of Sol-Gel Science and Technology","volume":"114 3","pages":"691 - 698"},"PeriodicalIF":2.3,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144091166","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Structural, optical, and dielectric properties of copper-doped ZnO nanorods prepared by modified sol-gel process","authors":"Zaineb Hammami,&nbsp;Aymen Selmi,&nbsp;Alaa Eddine Maayoufi,&nbsp;Tariq Altalhi,&nbsp;Soufiane Touil,&nbsp;Amine Mezni","doi":"10.1007/s10971-025-06717-5","DOIUrl":"10.1007/s10971-025-06717-5","url":null,"abstract":"<div><p>In the current research work, Copper doped ZnO (Zn_1-xCu_xO) nanorods photocatalyst was established using a simple modified sol-gel protocol. The shape of the nanomaterial was found to be crucial for both optical response and photocatalytic activity. However, the nanorods present a 2D direction which exalts the intrinsic properties of the photocatalyst. Triethyleneglycol (TREG) was used as a solvent which is believed to be the responsible parameter that leads to preparing Cu/ZnO with this important shape. The photocatalyst after that was characterized in terms of structure, microstructure and optical absorption. The optical behavior of Cu/ZnO photocatalyst was more studied by dielectric conductivity and impedance investigation. The XRD measurements reveal the formation of ZnO wurtzite structures. Electronic microscopy images confirm the formation of the desired nanorods with nanometric size. The photodegradation activity of the Cu/ZnO photocatalyst exhibits high performance compared to pristine ZnO. The mechanism of this behavior was discussed and improved compared to previous works.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":664,"journal":{"name":"Journal of Sol-Gel Science and Technology","volume":"114 3","pages":"669 - 678"},"PeriodicalIF":2.3,"publicationDate":"2025-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144091079","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Revealing the factors affecting the textural properties of Ni-doped carbon xerogels produced via resorcinol-formaldehyde polycondensation","authors":"Grigory B. Veselov,&nbsp;Yury V. Shubin,&nbsp;Pavel E. Plyusnin,&nbsp;Aleksey A. Vedyagin","doi":"10.1007/s10971-025-06719-3","DOIUrl":"10.1007/s10971-025-06719-3","url":null,"abstract":"<div><p>In the present work, a series of Ni-doped carbon xerogels were prepared via resorcinol-formaldehyde polycondensation and subsequent pyrolysis of organic xerogels. As found, introducing nickel acetate into the resorcinol-formaldehyde gels does not lead to the reduction of Ni or the formation of large Ni particles. Due to the even distribution of acetate ions in the organic xerogel matrix, their decomposition occurs at a temperature of ~520 °C, when the matrix is almost disintegrated. This gives additional amounts of carbon oxides, which are released at this temperature and affect the porous structure. Carbon xerogel containing 2.5 wt% Ni possesses the lowest density (0.54 g/cm³) and the largest pore volume (1.62 cm³/g). Compared with pure carbon xerogel, this sample retains high values of the external (278 m²/g) and total (783 m²/g) specific surface areas and does not undergo graphitization. It is worth noting that pH has little effect on the porous structure of carbon xerogel doped with a low amount of nickel. Contrarily, varying the concentration of resorcinol and formaldehyde in the solution allows obtaining Ni-doped carbon xerogels with tunable pore radius ranging from 16 to 200 nm and density in the range of 0.27–0.80 g/cm³. On the other hand, the textural properties of the xerogel matrix were found to influence the agglomeration process of nickel particles during the pyrolysis stage. In the case of mesoporous and macroporous xerogels, the agglomeration of Ni particles is hindered due to the texture limitations or the blockage of small nickel particles inside the matrix.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":664,"journal":{"name":"Journal of Sol-Gel Science and Technology","volume":"114 2","pages":"625 - 640"},"PeriodicalIF":2.3,"publicationDate":"2025-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143830777","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhanced properties of TiO₂-based self-cleaning films through surface modification with silane/maleic anhydride","authors":"Hongzhang Deng,&nbsp;Peiwen Xiao,&nbsp;Liqiang Yang,&nbsp;Jianhui Luo,&nbsp;Meiying He,&nbsp;Pingmei Wang,&nbsp;Bo Jiang,&nbsp;Bo Xiao","doi":"10.1007/s10971-025-06669-w","DOIUrl":"10.1007/s10971-025-06669-w","url":null,"abstract":"<div><p>Sol-gel and dip-coating are common methods for preparing TiO₂ thin films. However, due to the incomplete hydrolysis of the precursor, the surface of TiO₂ nanoparticles still contains a lot of alkoxy groups, which has an adverse effect on the wettability of TiO₂ films. In this work, superhydrophilic TiO₂ films with enhanced photocatalytic performance were prepared by chemical modification of TiO₂ sol. FTIR spectroscopy and TGA verified that the carboxyl group was successfully grafted onto the surface of TiO₂ nanoparticles after two steps of modification. With the increase of the amount of modified reagents, the hydrophilic and photocatalytic properties of the film were gradually enhanced. When the mass of 3-triethoxysilylpropylamine (KH550) used reached 50% of the dry weight of TiO₂ (T-50), the film showed superhydrophilic and excellent photocatalytic properties. The enhanced wettability and photocatalytic performance make the modified TiO₂ films have greater advantages in the field of self-cleaning.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div><div><p>TiO₂ films with enhanced hydrophilic and photocatalytic properties were obtained by two-step chemical modification of sol and dip coating.</p></div></div></figure></div></div>","PeriodicalId":664,"journal":{"name":"Journal of Sol-Gel Science and Technology","volume":"114 3","pages":"679 - 690"},"PeriodicalIF":2.3,"publicationDate":"2025-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144091080","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Cysteine and chicken egg white Co-capped Ag-nanoclusters for efficient photocatalytic applications","authors":"Andrew Okram,&nbsp;Ashish Kumar Singh,&nbsp;Manjeet Singh","doi":"10.1007/s10971-025-06720-w","DOIUrl":"10.1007/s10971-025-06720-w","url":null,"abstract":"<div><p>This research involved the synthesis of silver nanoclusters co-capped by chicken egg white (CEW) and cysteine for photocatalytic degradation. The determination of size and morphology of synthesized CEW and cysteine co-capped AgNCs (CC-AgNCs) have been carried out by using TEM (Transmission Electron Microscopy), XRD (X-ray diffraction), HRMS (high-resolution mass spectroscopy) and XPS (X-ray photoelectron spectroscopy) analysis. The optical properties have been studied using UV-visible and photoluminescence spectroscopy (PL). The simultaneous capping resulted in ultra-small AgNCs having average size of 2–3 nm. The HRMS indicated the formation of Ag2, Ag3, Ag5 and Ag9 clusters, while other existing methods shows nanoclusters formation having higher number of atoms. The nanoclusters formation having less atoms was due to the strong co-capping from both ligands. The synthesized CC-AgNCs displayed notably high photocatalytic degradation efficeincy for toxic methylene blue dye. The degradation efficiency of the synthesized CC-AgNCs was 88% within 60 min under irradiation by 30 W LED light, showcasing outstanding performance in comparison to the AgNCs synthesized using cysteine and chicken egg white separately as capping ligand.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div><div><p>The transition of electron from HOMO to LUMO in the Ag-nanoclusters generates electron in LUMO and hole in HOMO for the photocatalytic degradation of methylene blue dye.</p></div></div></figure></div></div>","PeriodicalId":664,"journal":{"name":"Journal of Sol-Gel Science and Technology","volume":"114 2","pages":"612 - 624"},"PeriodicalIF":2.3,"publicationDate":"2025-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143830776","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"MoS₂-decorated etched-TiO₂ rods film for superior photocatalytic dye degradation","authors":"Shazleen Ahmad Ramli,&nbsp;Rosnah Mohd Zin,&nbsp;M. K. Ahmad,&nbsp;N. I. Azyan,&nbsp;N. K. A. Hamed,&nbsp;D. G. Saputri,&nbsp;A. M. S. Nurhaziqah,&nbsp;N. Nafarizal,&nbsp;K. Silambarasan,&nbsp;A. B. Suriani,&nbsp;M. Y. Ahmad","doi":"10.1007/s10971-025-06702-y","DOIUrl":"10.1007/s10971-025-06702-y","url":null,"abstract":"<div><p>The drive to enhance photocatalytic performance for dye degradation has spurred the invention of cutting-edge materials with modified surfaces. This study investigates the synthesis and application of films of vertically and intricately aligned titanium dioxide (TiO₂) rods, fabricated by etching to enhance surface properties, and subsequently decorated with molybdenum disulfide (MoS₂) for the degradation of Methylene Blue (MB). The etching process is crucial in creating more active sites on the TiO₂ rods, improving their ability to interact with light and reactants. The MoS₂ decoration was implemented with different reaction durations. The photocatalytic performance of each sample was evaluated over 10 h with MB concentration of 5 ppm at pH 12. Comprehensive characterizations of the MoS₂-decorated etched-TiO₂ rods films were conducted using X-ray powder diffraction (XRD), field emission scanning electron microscopy (FESEM) and atomic force microscopy (AFM), and ultraviolet–visible spectrophotometry (UV-Vis) to elucidate their structural, morphological, topological and dye degradation properties, respectively. Photocatalytic performance was assessed under visible radiation. The results demonstrated that the etched-TiO₂ rods, decorated with MoS₂ for 7 h, exhibited the greatest MB degradation efficiency, with a 47% improvement over the as-deposited TiO₂ and a 31.13% increase compared to the etched-TiO₂ rods film. This significant enhancement with etching treatment is attributed to improved crystallinity, surface morphology, and surface roughness facilitated by the optimal MoS₂ decoration. The study reveals that a 7 h hydrothermal reaction produces the most efficient photocatalyst for MB degradation, underscoring the potential of MoS₂-decorated etched-TiO₂ rods films in dye treatment applications.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":664,"journal":{"name":"Journal of Sol-Gel Science and Technology","volume":"114 2","pages":"641 - 659"},"PeriodicalIF":2.3,"publicationDate":"2025-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143830739","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Insights into the microstructural, optical and magnetic characteristics of cobalt and dysprosium co-doped BaFe12O19 M-type hexagonal ferrites","authors":"Himanshi,&nbsp;Basant Lal,&nbsp; Suman,&nbsp;Natrayan Lakshmaiya,&nbsp;Jahangeer Ahmed,&nbsp;Saad M. Alshehri,&nbsp;Parteek Singh Thind,&nbsp;Sandeep Singh,&nbsp;Abhishek Kandwal,&nbsp;Rohit Jasrotia","doi":"10.1007/s10971-025-06705-9","DOIUrl":"10.1007/s10971-025-06705-9","url":null,"abstract":"<div><p>This current work aims to analyze the fabrication of Cobalt and Dysprosium co-doped BaFe₁₂O₁₉ of chemical composition, Ba_1-xCo_xDy_yFe_12-yO₁₉ (x = y = 0.2–0.6) via, the sol-gel auto-combustion (SGAC) technique, with its main objective to improve their structural, surface, microstructural, optical, and magnetic traits. X-ray diffraction reveals the hexagonal structure of prepared co-doped barium hexaferrites with an additional phase of α-Fe₂O₃ and it is also validated by the Rietveld refinement. The computed crystallite size (D) falls between 22.40 and 41.02 nm. The grain size distribution at the surface of doped barium hexaferrites is reported by the field emission scanning electron microscopy (FESEM) study within in the range of 102.05 to 189.43 nm. The FESEM results confirms a hexagonal morphology for all the samples. The fundamental metal-oxygen (M-O) stretching vibrations at the tetrahedral and octahedral positions are detected via Fourier-transform infrared spectroscopy (FTIR). This approves the existence of distinctive functional groups within the developed hexaferrites. Seven Raman active band positions are found in the Raman spectra of Ba_1-xCo_xDy_yFe_12-yO₁₉ hexaferrites. The computed specific surface area is found to be 3.478 and 3.352 m²/g for the CDH1 and CDH3 hexaferrites. The magnetic results show that with the doping, the coercivity and saturation magnetization decreases. Therefore, due to the excellent Brunauer-Emmett-Teller (BET) and Vibrating sample magnetometry (VSM) results, the Ba_1-xCo_xDy_yFe_12-yO₁₉ hexaferrites are highly beneficial in the sensors and magnetic recording applications.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":664,"journal":{"name":"Journal of Sol-Gel Science and Technology","volume":"114 2","pages":"581 - 593"},"PeriodicalIF":2.3,"publicationDate":"2025-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143830737","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}