Journal of Sol-Gel Science and Technology最新文献

{"title":"Eco-friendly flame-retardant finishing of polyester fabrics with diammonium hydrogen phosphate, gelatin, and silica gel for cultural heritage preservation","authors":"Tekalgn Mamay Daget,&nbsp;Bantamlak Birlie Kassie,&nbsp;Molla Tadesse Abate,&nbsp;Meseret Fentahun Teshome,&nbsp;Mekides Mastewal Arega,&nbsp;Desalegn Atalie","doi":"10.1007/s10971-025-06773-x","DOIUrl":"10.1007/s10971-025-06773-x","url":null,"abstract":"<div><p>The preservation of cultural heritage, particularly in fire-prone settings like churches and museums, is critical, yet traditional flame-retardant treatments often involve harmful chemicals, emphasizing the need for eco-friendly alternatives that do not compromise fabric integrity. This study develops and evaluates a sustainable, eco-friendly flame-retardant finish for polyester fabrics that enhances fire resistance while preserving the necessary mechanical properties for use in these surroundings. A layer-by-layer application method was employed, utilizing Diammonium hydrogen phosphate (DAP), gelatin, and silica gel to treat selected polyester and polypropylene fabrics. The treated fabrics were assessed for flame retardancy, thermal stability, and mechanical properties using TGA and FTIR analysis. Results showed substantial improvements in flame retardancy, with average burning times reduced to 3–5 s and char residue between 4.28% and 6.51%. TGA analysis confirmed enhanced thermal stability through increased residual char formation, while FTIR results indicated successful chemical modifications. Although there were minor reductions in tensile strength (up to 7.64%) and elongation (up to 16.36%), the fabrics retained adequate mechanical properties. These findings present a viable approach to achieving eco-friendly flame retardancy in textiles, balancing fire protection with the preservation of fabric integrity, and offering a promising solution for protecting cultural artifacts in fire-prone environments, thus contributing to both safety and sustainability in heritage conservation.</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":"1095 - 1108"},"PeriodicalIF":2.3,"publicationDate":"2025-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144091195","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":"Elaboration and characterization of ZnO/CuO nano-composites produced by sol-gel route for supercapacitor application","authors":"Mohd Oulmessaoud Boughanem,&nbsp;Nassim Touka,&nbsp;Salim Mokhtari,&nbsp;Salima Kaizra,&nbsp;Salah Eddine Berrabah,&nbsp;Dalila Tabli,&nbsp;Nourddine Selmi,&nbsp;Mohamed Trari","doi":"10.1007/s10971-025-06763-z","DOIUrl":"10.1007/s10971-025-06763-z","url":null,"abstract":"<div><p>In the present work, CuO with concentration of 0.15 mol/L, ZnO with a concentration of 0.25 mol/L, and ZnO/CuO Nano composites with following ratios (50% ZnO &amp; 50% CuO and 70% ZnO &amp; 30% CuO) were prepared and deposited on glass substrates by the sol-gel spin coating process. Physical techniques such as X-ray diffraction analysis (XRD), atomic force microscopy, and UV-Vis spectroscopy were used for the characterization of the crystal structure, surface topography, and optical properties. The XRD analysis showed that CuO and ZnO crystallize respectively in monoclinic and hexagonal symmetries. Crystallite size decreased while dislocation density and microstress increased upon addition of CuO. These increases are responsible for the reduction in crystallite size. The AFM microscopy demonstrates alteration in the surface morphology, with inclusion of CuO leading to decrease in the average roughness (Ra) of ZnO. The UV-Vis spectrophotometry indicate that the band edge absorption is red-shifted whereas 50%ZnO/50%CuO is highly red-shift in spectra. The gap energies (Eg) of 1.73, 3.25, 3.19, and 2.88 eV are found respectively for CuO, ZnO, 70%ZnO/30%CuO and 50%ZnO/50%CuO. The films exhibit high super-capacitor properties, the electrochemical study showed that the electrode 50% ZnO/50%CuO has high specific capacitance of 217.81 F/g at 1 mV/s and excellent cyclic stability with nearly 96% capacity retention after 5000 cycles at 0.1 mA/cm².</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":"1040 - 1050"},"PeriodicalIF":2.3,"publicationDate":"2025-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144091156","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":"Improved magnetic properties of sol–gel prepared CoFe1.95Sm0.05O4 and CoFe1.95Gd0.05O4 ferrites","authors":"M. Siddeshwar,&nbsp;Kanchana Latha Chittury,&nbsp;V. Rama Devi,&nbsp;Puli Nageswar Rao,&nbsp;T. Ramesh,&nbsp;P. Sowjanya,&nbsp;Nehru Boda,&nbsp;N. Pavan Kumar","doi":"10.1007/s10971-025-06756-y","DOIUrl":"10.1007/s10971-025-06756-y","url":null,"abstract":"<div><p>Two distinct Rare Earth (RE) element doped cobalt nano ferrite compounds CoFe_1.95Sm_0.05O₄ and CoFe_1.95Gd_0.05O₄ were synthesized using the sol–gel method without using an organic gelation agent and investigated their optical, structural, and magnetic properties. Rietveld’s study of XRD noted the formation of a single-phase cubic <i>Fd-3m</i> spinel structure. SEM EDS confirms the presence of all elements as per the composition. CoFe_1.95Sm_0.05O₄ shows lower band gap value than CoFe_1.95Gd_0.05O₄ which were measured from UV-Visible spectra. FTIR spectra confirmed the presence of characteristic spinel vibrations. Magnetic parameters were measured by using M vs H and M vs 1/H² spectra from vibrating sample magnetometer (VSM measurements). The M_s (saturation magnetization) values were 51.51 emu/g and 47.86 emu/g for CoFe_1.95Sm₀.₀₅O₄ and CoFe_1.95Gd_0.05O₄ respectively. The higher coercivity values i.e., 2062 Oe for CoFe_1.95Sm_0.05O₄ and 2697 Oe for CoFe_1.95Gd_0.05O₄ were observed compared to literature. The prepared RE-doped cobalt nano ferrite materials offer promising applications for functional devices and enhanced magnetic properties of the composites.</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":"1051 - 1061"},"PeriodicalIF":2.3,"publicationDate":"2025-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144091157","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":"Impact of fluoroalkoxysilane incorporation on the mechanical properties of sol-gel coatings on stainless steel and glass surfaces","authors":"Elif Keskin,&nbsp;Simge Tarkuç,&nbsp;Süleyman Alper Yeşilçubuk,&nbsp;Nilgün Kızılcan,&nbsp;Nesrin Köken","doi":"10.1007/s10971-025-06766-w","DOIUrl":"10.1007/s10971-025-06766-w","url":null,"abstract":"<div><p>Organic–inorganic hybrid sol–gel coatings were prepared using 3-glycidoxypropyltrimethoxysilane (GPTMS) and 3-aminopropyltriethoxysilane (APTES) as precursors, with and without the incorporation of a fluoroalkoxysilane. The coatings were applied to stainless steel and glass substrates to evaluate the influence of the fluoroalkoxysilane on the physicochemical and protective properties of the resulting coatings. The GEAN coating, prepared without fluoroalkoxysilane using GPTMS (3-glycidoxypropyl-trimethoxysilane) and APTES (3-aminopropyl triethoxysilane) as precursors, exhibited hydrophilic characteristic with a water contact angle of 74°. In contrast, the incorporation of 1H,1H,2H,2H-perfluorooctyltriethoxysilane (PFOTES) as a fluoroalkoxysilane in the coating composition (GEAND) significantly increased the hydrophobicity, achieving a water contact angle of 111°. In addition to modifying surface wettability, the incorporation of 1H,1H,2H,2H-perfluorooctyltriethoxysilane (PFOTES) significantly enhanced the mechanical properties of the coating, including elasticity, impact resistance, and resistance to deformation. The physicochemical stability and adhesion performance of the coatings under humid and corrosive environments were evaluated through durability testing. The GEAND coating kept its adhesion and structural integrity for up to 720 h (30 days) under humid conditions, whereas the GEAN coating exhibited the loss of adhesion after 120 h (5 days). In salt spray testing, adhesion loss was observed in the GEAN-S and GEAND-S coatings after 24 and 48 h, respectively. These results demonstrate that the enhanced hydrophobicity imparted by the PFOTES-modified GEAND coating contributes to improve resistance to degradation under environmental conditions.</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":"1062 - 1081"},"PeriodicalIF":2.3,"publicationDate":"2025-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10971-025-06766-w.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144091158","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":"Synthesis of MWW-type zeolite through seed-assisted interzeolite transformation from FAU zeolite","authors":"Mengxuan Zhu,&nbsp;Yifan Liu,&nbsp;Jiaxin Ma,&nbsp;Longyang Wang,&nbsp;Rui Wang,&nbsp;Heng Jiang,&nbsp;Changzi Jin","doi":"10.1007/s10971-025-06769-7","DOIUrl":"10.1007/s10971-025-06769-7","url":null,"abstract":"<div><p>Developing the novel green routes for synthesis of important aluminosilicate zeolites is of significant for theoretical research and practical application. In this work, MCM-22 zeolite with MWW-topology was synthesized through seed-assisted interzeolite transformation from FAU zeolite without using additional organic template. The key influence factor to the synthesis process was investigated and the zeolite products were characterized by a series of modern techniques. It has been shown that not only the presence of MCM-22 seed, but also the appropriate SiO₂/Al₂O₃ and Na₂O/SiO₂ molar ratio of starting synthesis gel with were crucial to synthesize pure MWW zeolite. The hexamethyleneimine template occluded in seed also played a key role in successful interzeolite transformation, but did not participate structure-directing of MWW product. Although the zeolite synthesized by interzeolite transformation showed lower surface area and pore volume compared with MCM-22 zeolite prepared by conventional route, the Pt modified sample exhibited promising catalytic performance in hydroisomerization of <i>n</i>-heptane.</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":"1029 - 1039"},"PeriodicalIF":2.3,"publicationDate":"2025-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144091116","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":"Tuning the morphological and dispersion parameters of electrospun PAN/CZTS nanofibers as a potential candidate for advanced optoelectronic applications","authors":"Ahmed I. Abdelamir,&nbsp;Fouad Sh. Hashim","doi":"10.1007/s10971-025-06765-x","DOIUrl":"10.1007/s10971-025-06765-x","url":null,"abstract":"<div><p>For the first time, Cu₂ZnSnS₄ (CZTS) nanoparticles synthesized through the solvothermal method, were incorporated into polyacrylonitrile (PAN) to improve the morphological and optical properties of PAN/CZTS nanofibers. Fourier transform infrared (FTIR) verified a strong interaction between PAN and CZTS. X-ray diffraction (XRD) analysis showed the semicrystalline PAN matrix and the tetragonal crystal structure for the CZTS. Field emission scanning electron microscopy (FESEM) images presented the formation of quasi-spherical and nanoworm-like geometries for the CZTS and uniform nanofibers with average diameters of 155, 132, 126, and 124 nm in the pristine and nanocomposite films. Transmission electron microscopy (TEM) analysis revealed that CZTS promoted the formation of nanofiber composites with a core-shell structure. The highest absorbance value appeared within the wavelength range of 250–260 nm. The indirect energy gap <span>({(E}_{{g; indir}}^{{opt}}))</span> decreased from 3.7 to 2.81 eV, and Urbach energy increased from 0.28 to 0.79 eV with the addition 2–6 wt.% CZTS. Additionally, the skin depth, extinction coefficient, refractive index, and optical conductivity were studied. The refractive index behavior was studied by employing the Wemple-Di Domenico single oscillator model. The optical susceptibility <i>χ</i>⁽¹⁾, <i>χ</i>⁽³⁾ and nonlinear refractive index n₂ of PAN and PAN/CZTS were enhanced from 0.046 to 0.127 esu, 0.78 to 44.2 esu, and 23.7 to 1034 esu, respectively. The results show that the PAN/CZTS nanofibers are potential optoelectronic devices.</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":"115 2","pages":"998 - 1014"},"PeriodicalIF":3.2,"publicationDate":"2025-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145170021","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":"Polyvinyl alcohol assisted Fe2O3/NiO hyper cross-linked polymer as a photocatalytic signal damper to aromatic hydrocarbons","authors":"A. Thiruppavai,&nbsp;M. Banupriya,&nbsp;M. Umadevi,&nbsp;R. Parimaladevi","doi":"10.1007/s10971-025-06768-8","DOIUrl":"10.1007/s10971-025-06768-8","url":null,"abstract":"<div><p>In this study, poly vinyl alcohol assisted Fe₂O₃/NiO hyper cross linked polymer (HCP) were synthesized via Sol-gel method were mainly focused to remove aromatic hydrocarbons, but it also exhibit the adsorption of organic pollutants making it versatile for environmental remediation. The X-ray diffraction analysis shows the formation Fe₂O₃/NiO composites. The morphological studies confirm the formation of hyper cross linked polymer in agglomerated state. Besides the Tauc plot depict the increase in the bandgap after the incorporation of NiO on Fe₂O₃ nanoparticles. Then the Fe₂O₃/NiO HCP composites were characterized using diesel oil as a typical adsorbate via batch adsorption-photocatalytic experiment in aqueous solution. It shows an effective adsorption of Methylene blue (84% in 80 min) and the diesel oil in aqueous solution with the maximum adsorption efficiency of 93% with the linear correlation coefficient of 0.9768 via photocatalytic UV light signal damper. Also the Fourier transform infrared spectra confirm the maximum adsorption occurs for Fe₂O₃/NiO HCP as composites. The TOC analysis shows highest reduction efficiency for Fe₂O₃/NiO HCP as 94.64% (Methylene blue dye), and 85.87% (Diesel sample). This work depict the adsorption of aromatic based compounds in the aqueous solution, since the composite is magnetic in nature it could be removed and recycled for the further use.</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":"1127 - 1136"},"PeriodicalIF":2.3,"publicationDate":"2025-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144091066","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":"Fabrication of hollow sphere silica materials using polystyrene waste templates","authors":"Van Quy Nguyen,&nbsp;Thoai Quoc Nguyen,&nbsp;Tuan Nguyen Anh Huynh,&nbsp;Khanh Bao Vu,&nbsp;Ha Ngoc Giang","doi":"10.1007/s10971-025-06764-y","DOIUrl":"10.1007/s10971-025-06764-y","url":null,"abstract":"<div><p>Hollow sphere silica nanoparticle (HSSN) is a special material with many potential applications. Hard polystyrene (PS) templates are usually applied as the cores and removed by calcination after the silica shell formation. In this study, PS source recycled from waste expanded PS foam was applied to fabricate the nano-size PS dispersion by simple nanoprecipitation technique. With only one precipitation cycle in methanol, the recycled PS was pure enough and the templates with particle size ranging from 168 to 350 nm could be obtained. The cationic surfactant - cetyltrimethylammonium bromide (CTAB) could alter the zeta potential of PS nanoparticles. The positive zeta potential of 71.86 ± 0.3 mV could ensure the good stability of the nano-dispersed system and was essential for silica deposition to PS surfaces. The effect of CTAB concentration and PS amount on the particle size was investigated. Although changing the CTAB concentrations did not show a clear tendency, the particle size was increased when a higher PS concentration in tetrahydrofuran solvent was used. The core@shell structure of PS@SiO₂ was formed via hydrolysis and condensation of triethyl orthosilicate (TEOS) in the PS template solution. The collected precipitation amount and the mass after calcination were monitored. The hollow sphere structure was confirmed by transmission electron microscope (TEM). Therefore, HSSN could be successfully fabricated using TEOS and the PS templates synthesized from waste. An investigation of using NaOH instead of NH₄OH as a catalyst for TEOS hydrolysis/condensation and the use of a silica source from rice husk was also performed. The presence of Na⁺ in NaOH or the use of silica source from rice husk might result in less ability to form the hollow sphere structure. The obtained materials were also characterized with X-ray diffraction (XRD) and nitrogen sorption technique to confirm the crystalline and mesoporous structure.</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":"997 - 1010"},"PeriodicalIF":2.3,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144091026","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":"Exploring effect of lanthanum substitution on physical and magneto-ferroelectric behavior of strontium hexaferrite nanomaterials for its applications in data storage to electronics industries","authors":"Pammi Kumari,&nbsp;Rakesh Kumar Singh,&nbsp;Aniket Manash,&nbsp;Nishant Kumar","doi":"10.1007/s10971-025-06758-w","DOIUrl":"10.1007/s10971-025-06758-w","url":null,"abstract":"<div><p>The M-type hexagonal ferrite nanoscale materials; SrLa_xFe_12-xO₁₉ (<i>X</i> = 0.0, 0.1, 0.2, 0.4, 0.6) prepared by the sol-gel process have enhanced properties in the data storage device to electronics industries. X-ray diffraction analysis revealed a decrease in crystal size and strain from 83.493 nm to 31.716 nm and 15.3*10⁻⁴ to 4.7*10⁻⁴ by increasing rare earth element La content. Rietveld refinement finding shows that the hexagonal structure space group P63/mmc. TGA displays a significant weight loss at a temperature of 700 °C thus leading to annealing the sample at temperature 750 °C. The SEM analysis revealed an agglomerated and porous structure. The microstructure of prepared ferrite displays the nanocrystalline agglomeration as measured by TEM. Raman analysis shows a single wider peak bifurcated in the first substitution and again merged in maximal substitution at Raman shift 300–450 cm⁻¹, consistent result supporting new band formation. The ferroelectric behavior having the largest loop size at SrLa_0.6Fe_11.4O₁₉ with 6KV and 8 KV found. The M-H loop analysis of SrF₁₂O₁₉ and SrLa_0.6Fe_11.4O₁₉ reveals high coercivity (4770.432–5056.490 Oe), retentivity (27.97–28.08 emu/g), squareness ratio 0.5, and anisotropic constant from 0.53764 to 0.42558 erg/cm³. The squareness ratio increases from 0.576 to 0.711 and is directly proportional to the coercivity, which is an important feature of magnetic recording media, and memory storage potential The switching field distribution graph shows weak exchange coupling with double peaks, tuning structural, ferroelectric, and magnetic properties that are beneficial in high-frequency microwave applications, the electronic industry, and data storage.</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":"1011 - 1028"},"PeriodicalIF":2.3,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144091025","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 nitrogen-doped graphene-supported MoS2 nanosheets with synergistic effect for high-performance supercapacitor electrodes","authors":"Nithyialakshmi Ravindran,&nbsp;M. Sookhakian,&nbsp;Goh Boon Tong,&nbsp;Y. Alias","doi":"10.1007/s10971-025-06762-0","DOIUrl":"10.1007/s10971-025-06762-0","url":null,"abstract":"<div><p>Efficient supercapacitor electrodes have been developed from a nitrogen-doped graphene-molybdenum disulfide composite (NG/MoS₂) with varying NG concentrations fabricated on nickel foil electrodes. The successful synthesis of NG and MoS₂ nanosheets was confirmed through Raman spectroscopy, X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS). At the same time, the morphology was studied using FESEM and TEM. The influence of varying NG concentrations on the electrochemical properties of the MoS₂ nanosheets was investigated. The composite containing 1% NG achieved a maximum specific capacitance of 897.6 F/g at a current density of 1 A g⁻¹, surpassing the electrochemical performance of pristine MoS₂, which had a capacitance of 291.1 F/g under the same conditions. This improvement arises from the synergistic interaction between superior catalytic properties found in the MoS₂ nanosheets and conductivity provided by the addition of NG, which was confirmed through electrochemical impedance spectroscopy (EIS). In conclusion, this work may offer a way to fabricate supercapacitor electrodes with improved specific capacitance and energy density for energy storage.</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":"983 - 996"},"PeriodicalIF":2.3,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144091023","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}