Journal of Sol-Gel Science and Technology最新文献

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Structural and magnetic properties of Sm³-doped Mg-Cd nanoferrites by citrate gel-auto combustion technique 柠檬酸凝胶-自燃烧法制备Sm³掺杂Mg-Cd纳米铁氧体的结构和磁性能
IF 3.2 4区 材料科学
Journal of Sol-Gel Science and Technology Pub Date : 2025-07-16 DOI: 10.1007/s10971-025-06867-6
S. Venu, N. V. Krishna Prasad, T. Ramesh Reddy, N. Hari kumar, K. Chandrababu Naidu, G. Vinod, D. Ravinder
{"title":"Structural and magnetic properties of Sm³-doped Mg-Cd nanoferrites by citrate gel-auto combustion technique","authors":"S. Venu,&nbsp;N. V. Krishna Prasad,&nbsp;T. Ramesh Reddy,&nbsp;N. Hari kumar,&nbsp;K. Chandrababu Naidu,&nbsp;G. Vinod,&nbsp;D. Ravinder","doi":"10.1007/s10971-025-06867-6","DOIUrl":"10.1007/s10971-025-06867-6","url":null,"abstract":"<div><p>Sm³ ion-doped Mg-Cd nanoferrites chemical formula Mg <sub>0.8</sub>Cd <sub>0.2</sub>Sm <sub>x</sub>Fe<sub>2-x</sub>O<sub>4</sub> (MCSF), where x varies from 0.000 to 0.025 in increments of 0.005. The synthesis of materials using the Citrate Gel-Auto Combustion (CGAC) technique. Powder X-ray diffraction (P-XRD) analysis indicated that the crystalline size and lattice constant increase with a higher concentration of Sm³⁺ ions. High-resolution transmission electron microscopy (HR-TEM) revealed that the particle size ranged from 13.6 to 26.6 nm. The field emission scanning electron microscopy (FE-SEM) studies showed that the grain size increased from 19.4 to 46.6 nm. Energy Dispersive X-ray Analysis (EDAX) confirmed the presence of magnesium (Mg), cadmium (Cd), samarium (Sm), iron (Fe), and oxygen (O) in the samples, with no detectable impurities. Fourier Transform Infrared Spectroscopy (FT-IR) spectra confirmed the presence of the cubic spinel structure and identified various functional groups, including two stretching bonds of metal nitrates. Magnetic analysis using a Vibrating Sample Magnetometer (VSM) demonstrated hysteresis at 300 K, indicating that the synthesized samples exhibited ferromagnetic behavior. The squareness ratio varied from 0.100 to 0.211, along with a coercivity range from 66.44 to 106.99 Oe. These materials have potential applications in magnetic recording devices and magnetic sensors.</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 3","pages":"1530 - 1541"},"PeriodicalIF":3.2,"publicationDate":"2025-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144927084","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}
引用次数: 0
Sol-gel fabricated barium M-type hexaferrites: Effect of high cobalt doping on the structural, optical, surface, and magnetic traits of BaFe12O19 hexaferrites 溶胶-凝胶法制备钡m型六铁体:高钴掺杂对BaFe12O19六铁体结构、光学、表面和磁性的影响
IF 3.2 4区 材料科学
Journal of Sol-Gel Science and Technology Pub Date : 2025-07-14 DOI: 10.1007/s10971-025-06861-y
Himanshi, Rohit Jasrotia, Basant Lal, Natrayan Lakshmaiya, Jahangeer Ahmed, Ashwani Sood,  Suman, Abhishek Kandwal, Saad M. Alshehri
{"title":"Sol-gel fabricated barium M-type hexaferrites: Effect of high cobalt doping on the structural, optical, surface, and magnetic traits of BaFe12O19 hexaferrites","authors":"Himanshi,&nbsp;Rohit Jasrotia,&nbsp;Basant Lal,&nbsp;Natrayan Lakshmaiya,&nbsp;Jahangeer Ahmed,&nbsp;Ashwani Sood,&nbsp; Suman,&nbsp;Abhishek Kandwal,&nbsp;Saad M. Alshehri","doi":"10.1007/s10971-025-06861-y","DOIUrl":"10.1007/s10971-025-06861-y","url":null,"abstract":"<div><p>In this research work, cobalt-doped barium hexaferrites of composition, Ba<sub>1-x</sub>Co<sub>x</sub>Fe<sub>12</sub>O<sub>19</sub> (<i>x</i> = 0.2, 0.4, and 0.6) are fabricated via the sol-gel auto-combustion (SGC) method to investigate the morphological, structural, optical, surface, and magnetic traits. This research is performed to analyze the effect of the high cobalt doping at the lattice sites of barium cations. The magneto-plumbite crystal structure with a small trace of α-Fe<sub>2</sub>O<sub>3</sub> is confirmed via the XRD analysis. An increase in the values of crystallite size is observed with the increasing cobalt doping. FESEM show the formation of well-defined surface morphology with the aggregated grains. The mesoporous structure of cobalt doped barium hexaferrites are confirmed through the BET analysis. The existence of nine Raman active vibrational modes shows the formation of hexagonal structure for the prepared barium hexaferrites. The oxidation states of every element present in the synthesised specimens are confirmed by the XPS analysis. At room temperature, with the increasing cobalt doping, the values of coercivity (H<sub>c</sub>) and saturation magnetisation (M<sub>s</sub>) decreases from 2368 to 1542 Oe and 43.11 to 25.12 emu/g. Therefore, in this research work, the admirable values of M<sub>s</sub>, H<sub>c</sub>, and surface area are making these hexaferrites as the useful candidate for the recording media and environmental 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":"115 3","pages":"1497 - 1509"},"PeriodicalIF":3.2,"publicationDate":"2025-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144926978","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}
引用次数: 0
First-principles approach of novel iodine-based double perovskites Cs2BScI6 (where, B = Na and Rb) compounds 新型碘基双钙钛矿Cs2BScI6(其中,B = Na和Rb)化合物的第一性原理方法
IF 3.2 4区 材料科学
Journal of Sol-Gel Science and Technology Pub Date : 2025-07-12 DOI: 10.1007/s10971-025-06816-3
Umar Farooq, Wasif ur Rehman, Yong-Long Wang, Breej AlAahir, Refka Ghodhbani
{"title":"First-principles approach of novel iodine-based double perovskites Cs2BScI6 (where, B = Na and Rb) compounds","authors":"Umar Farooq,&nbsp;Wasif ur Rehman,&nbsp;Yong-Long Wang,&nbsp;Breej AlAahir,&nbsp;Refka Ghodhbani","doi":"10.1007/s10971-025-06816-3","DOIUrl":"10.1007/s10971-025-06816-3","url":null,"abstract":"<div><p>First principles approach is employed to explore the physical aspects of halide double perovskites (HDPs) Cs<sub>2</sub>BScI<sub>6</sub> (<span>({rm{B}}={rm{Rb}})</span> <span>({rm{and}})</span> <span>({rm{Na}})</span>) using the full-potential linearized augmented plane-waves method including local orbitals. The band structures and density of states are investigated using the GGA-PBEsol approximation. In addition, the Tran–Blaha-modified Becke–Johnson (TB-mBJ) potential, spin-orbit coupling (SOC) effects, and Hubbard U correction (LSDA + U) methods were applied to reveal the direct (3.027, 2.854, and 2.281) eV and indirect (2.745, 2.564, and 2.107) eV bandgaps for Cs<sub>2</sub>RbScI<sub>6</sub> and Cs<sub>2</sub>NaScI<sub>6</sub> respectively. Furthermore, the electron density and Poisson’s ratio confirmed the ionic nature of Cs<sub>2</sub>RbScI<sub>6</sub> and Cs<sub>2</sub>NaScI<sub>6</sub> compounds correspondingly. Moreover, to assess the potential of Na and Rb-based HDPs for optoelectronic applications, various optical parameters are calculated. Moreover, BoltzTraP2 code was employed to investigate the thermoelectric properties within the temperature range of 200–1000 K. The higher values of the Seebeck coefficient, combined with p-type charge mobility and superior ZT values, indicate their potential in thermoelectric generators and automotive technologies.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div><div><p>The physical properties of halide double perovskites Cs<sub>2</sub>BScI<sub>6</sub> (<span>({rm{B}}={rm{Rb}})</span> <span>({rm{and}})</span> <span>({rm{Na}})</span>) were explore using first principle approach. The GGA-PBEsol approximation were used to investigate the band structures and density of states. In addition, the TB-mBJ potential, spin-orbit coupling effects, and Hubbard U correction (LSDA + U) methods were applied to reveal the direct (3.027, 2.854, and 2.281) eV and indirect (2.745, 2.564, and 2.107) eV bandgaps for Cs<sub>2</sub>RbScI<sub>6</sub> and Cs<sub>2</sub>NaScI<sub>6</sub>, respectively. The higher values of the Seebeck coefficient, combined with p-type charge mobility and superior ZT values, indicate their potential in thermoelectric generators and automotive technologies.</p></div></div></figure></div></div>","PeriodicalId":664,"journal":{"name":"Journal of Sol-Gel Science and Technology","volume":"115 3","pages":"1479 - 1496"},"PeriodicalIF":3.2,"publicationDate":"2025-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144927137","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}
引用次数: 0
Self-cleaning graphene oxide based superhydrophobic coating on steel for improving corrosion and biofouling resistance 自清洁氧化石墨烯基超疏水涂层,提高钢的耐腐蚀性和抗生物污染能力
IF 3.2 4区 材料科学
Journal of Sol-Gel Science and Technology Pub Date : 2025-07-11 DOI: 10.1007/s10971-025-06854-x
S. C. Vanithakumari, G. Sahana, A. Ravi Shankar, S. Ningshen
{"title":"Self-cleaning graphene oxide based superhydrophobic coating on steel for improving corrosion and biofouling resistance","authors":"S. C. Vanithakumari,&nbsp;G. Sahana,&nbsp;A. Ravi Shankar,&nbsp;S. Ningshen","doi":"10.1007/s10971-025-06854-x","DOIUrl":"10.1007/s10971-025-06854-x","url":null,"abstract":"<div><p>Due to its good mechanical properties, carbon steel is one of the commonly used structural materials. Nevertheless, carbon steel is susceptible to deterioration in the marine environment by the combined interaction of corrosive ions and microorganisms. Therefore, in the present study, a superhydrophobic (SHP) graphene oxide (GO) based coating on carbon steel is developed and this coating is intended to protect the substrate from the aggressive corrosive environment. A composite coating of GO flakes, zirconia nanoparticles (ZrO<sub>2</sub>) and silane solution was coated on carbon steel substrates using dip coating and obtained a maximum water contact angle (WCA) of 169 ± 1°. Morphology and composition of SHP composite coating obtained from microscopy and spectroscopy studies were correlated to their non-wetting property. The corrosion protection performance of GO-ZrO<sub>2</sub>-silane coated SHP carbon steel was found to be better than the uncoated carbon steel in chloride solution. Bacterial adhesion studies in two different bacterial cultures showed that the total viable count of bacterial cells on GO-ZrO<sub>2</sub>-silane coated SHP carbon steel samples was 4 to 5 orders less than that of the uncoated carbon steel samples. This study paves the way for new approaches to address corrosion and biofouling of carbon steel in aqueous conditions.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div><div><p>Schematic describing the dip coating of GO + ZrO<sub>2</sub> + silane on polished and phosphated carbon steel specimen followed by curing resulting in a water contact angle of ~169°</p></div></div></figure></div></div>","PeriodicalId":664,"journal":{"name":"Journal of Sol-Gel Science and Technology","volume":"115 3","pages":"1465 - 1478"},"PeriodicalIF":3.2,"publicationDate":"2025-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10971-025-06854-x.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144927088","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}
引用次数: 0
Frequency-dependent dielectric properties and high-energy storage performance of strontium calcium titanate thin films synthesized via sol-gel-assisted spin coating technique 溶胶-凝胶辅助自旋镀膜技术合成钛酸锶钙薄膜的频率相关介电性能和高能存储性能
IF 3.2 4区 材料科学
Journal of Sol-Gel Science and Technology Pub Date : 2025-07-10 DOI: 10.1007/s10971-025-06858-7
Parthiban Palani, Didier Fasquelle
{"title":"Frequency-dependent dielectric properties and high-energy storage performance of strontium calcium titanate thin films synthesized via sol-gel-assisted spin coating technique","authors":"Parthiban Palani,&nbsp;Didier Fasquelle","doi":"10.1007/s10971-025-06858-7","DOIUrl":"10.1007/s10971-025-06858-7","url":null,"abstract":"<div><p>This study employed the sol-gel assisted spin coating method to prepare strontium calcium titanate thin films with Sr<sub>0.62</sub>Ca<sub>0.38</sub>TiO<sub>3</sub> composition. XRD and AFM were used to characterize the phase formation and crystallite size and the grain size and surface roughness, respectively. The XRD pattern revealed an orthorhombic phase with an average crystallite size of 47 nm. The root-mean-square (R<sub>q</sub>) and average roughness (R<sub>a</sub>) values were 7.5 nm and 5.9 nm, respectively. Furthermore, the thin film exhibited a quite stable dielectric permittivity (ε′) ≈ 186 over a wide frequency range between 100 Hz and 1 MHz with 5% frequency dispersion. The dielectric loss tangent (tanδ) remained lower than 0.5 between 100 Hz and 1 MHz. The polarization cycle revealed a very high energy recovery density (U<sub>e</sub>) of 120 J/cm<sup>3</sup> under an applied field of 6000 kV/cm. These results demonstrate the high interest in Sr<sub>0.62</sub>Ca<sub>0.38</sub>TiO<sub>3</sub> oxide for electrostatic energy storage applications and its exceptional resistance to breakdown.</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":"835 - 843"},"PeriodicalIF":3.2,"publicationDate":"2025-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145163451","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}
引用次数: 0
Fabrication and evaluation of AMPS-based enteric-coated hydrogel beads: a promising tool for colon targeting 基于amps的肠溶水凝胶珠的制备和评价:一种有前途的结肠靶向工具
IF 3.2 4区 材料科学
Journal of Sol-Gel Science and Technology Pub Date : 2025-07-09 DOI: 10.1007/s10971-025-06855-w
Kiran Rehman, Fahad Pervaiz, Hina Shoukat, Sadia Rehman, Sobia Noreen, Muhammad Sarfraz, Kifayat Ullah Khan, Aousaf Ahmad, Shakeel Ijaz
{"title":"Fabrication and evaluation of AMPS-based enteric-coated hydrogel beads: a promising tool for colon targeting","authors":"Kiran Rehman,&nbsp;Fahad Pervaiz,&nbsp;Hina Shoukat,&nbsp;Sadia Rehman,&nbsp;Sobia Noreen,&nbsp;Muhammad Sarfraz,&nbsp;Kifayat Ullah Khan,&nbsp;Aousaf Ahmad,&nbsp;Shakeel Ijaz","doi":"10.1007/s10971-025-06855-w","DOIUrl":"10.1007/s10971-025-06855-w","url":null,"abstract":"<div><p>Targeted drug delivery to the colon offers a promising approach to enhance therapeutic efficacy while minimizing systemic side effects. Our goal in this study was to create a pH-responsive, crosslinked hydrogel matrix for colonic drug release under control. Hydrogels based on poly (2-acrylamido-2-methylpropanesulfonic acid) (poly (AMPS)) were created by adjusting the amounts of the crosslinker (N, N’-methylene bisacrylamide, MBA) and monomer (AMPS). The resultant solidified hydrogel was converted into hydrogel beads. Several analytical approaches were used to thoroughly analyse the hydrogel beads’ structural, physicochemical, and pharmacokinetic characteristics. The existence of the intended chemical connections was confirmed by Fourier Transform Infrared Spectroscopy, and swelling investigations showed that swelling behavior was pH-dependent, with higher pH values causing more swelling. The investigation of drug entrapment efficiency revealed that nimesulide, a model drug, was effectively loaded into the hydrogel matrix. Studies on in vitro drug release showed pH-responsive and prolonged release characteristics, suggesting the possibility of specific delivery of drugs to the colon. Furthermore, the hydrogel beads’ capacity to expand and their biocompatibility were confirmed by in vivo testing in rabbit models, where no acute toxicity was noted. The results of our study highlight the potential therapeutic benefits of using pH-responsive poly (AMPS) based hydrogels for targeted medication delivery to the colon, particularly in the treatment of colorectal cancer and associated gastrointestinal problems.</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":"822 - 834"},"PeriodicalIF":3.2,"publicationDate":"2025-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145163885","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}
引用次数: 0
Efficient perovskite CaTiO3: Eu3+ co-doped with Mg2+ for light emitting diodes and degradation of organic dyes prepared by sol-gel combustion method 溶胶-凝胶燃烧法制备了用于发光二极管和降解有机染料的高效钙钛矿CaTiO3: Eu3+与Mg2+共掺杂
IF 3.2 4区 材料科学
Journal of Sol-Gel Science and Technology Pub Date : 2025-07-07 DOI: 10.1007/s10971-025-06838-x
Zahraa Abbas T., Dhia A. Hassan, Chao Li, Jian Xu
{"title":"Efficient perovskite CaTiO3: Eu3+ co-doped with Mg2+ for light emitting diodes and degradation of organic dyes prepared by sol-gel combustion method","authors":"Zahraa Abbas T.,&nbsp;Dhia A. Hassan,&nbsp;Chao Li,&nbsp;Jian Xu","doi":"10.1007/s10971-025-06838-x","DOIUrl":"10.1007/s10971-025-06838-x","url":null,"abstract":"<div><p>In this study, the preparation and characterization of Ca<sub>1-x</sub>Mg<sub>x/2</sub>TiO<sub>3</sub>:x/2Eu³⁺ perovskite phosphors via a hybrid sol-gel combustion method. The phosphors were characterized by X-ray diffraction analysis, photoluminescence, and scanning electron microscopy. The PL study reveals the prepared phosphor has a wide range of emission between 575-730 nm with a strong emission peak in the red region, indicating the potential use in wLED applications. The study aims to investigate the photocatalytic activity of the perovskites in the degradation of hazardous organic dyes such as methylene blue (MB) and crystal violet (CV). X-ray diffraction results demonstrate the formation of the pure crystalline phases with variable concentrations of Mg²⁺, whereas photoluminescence studies reveal the characteristic emissions from Eu³⁺. Photocatalytic characterization displayed an excellent degradation percentage; the degradation rate of MB was 78.33%, and that of CV was 84.08%, which indicates that the in-situ synthesized material may be a good adsorbent for remediation purposes in the environmental remediation procedure. The recovery of dyes from the surface of perovskite was studied to evaluate surface efficiency, and the reaction order was determined through the study of the degradation kinetics. Using a hybrid synthesis approach, this study demonstrated the creation of perovskite-based materials with significant improvements to their luminescent properties for optoelectronic devices and photocatalytic performance for environmental applications. The results highlight the versatility of the material, which can lead to further exploration and implementations in commercial LED technology and pollution control.</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":"808 - 821"},"PeriodicalIF":3.2,"publicationDate":"2025-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145163225","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}
引用次数: 0
Synthesis and characterization of europium doped zinc oxide nanoparticles: microstructural, optical band-gap and dielectric properties 掺铕氧化锌纳米粒子的合成与表征:微观结构、光学带隙和介电性能
IF 3.2 4区 材料科学
Journal of Sol-Gel Science and Technology Pub Date : 2025-07-02 DOI: 10.1007/s10971-025-06859-6
Houcine Labiadh, Wael Chouk, Sonia Louiz, Tariq Altalhi, Amine Mezni
{"title":"Synthesis and characterization of europium doped zinc oxide nanoparticles: microstructural, optical band-gap and dielectric properties","authors":"Houcine Labiadh,&nbsp;Wael Chouk,&nbsp;Sonia Louiz,&nbsp;Tariq Altalhi,&nbsp;Amine Mezni","doi":"10.1007/s10971-025-06859-6","DOIUrl":"10.1007/s10971-025-06859-6","url":null,"abstract":"<div><p>Using the concept of nucleation doping, rare earth metal doped zinc oxide (Eu/ZnO) nanoparticles were prepared in aqueous phase at 80 °C for a weight percent (10%) doping and characterized by X-ray diffraction, transmission electron microscopy to determine the morphology of the obtained nanoparticles, analyzed by X-ray photoelectron spectroscopy (XPS) and FT-IR spectroscopy. The energy difference (Eg) of the samples was estimated by means of the UV-visible technique by application of the Tauc equation. The study of the dynamic load of the structures studied shows that the edges of the insulators have a great influence on technical resistance. In addition, the electrical properties and relaxation phenomena are identical. Elliott was the first to introduce the “conductivity spectrum”, which he successfully explained with the “jump correlated barrier” model. These spectra of the material obtained at different temperatures are determined by Bruce’s law (double power of Jonscher). The study of the electrical conductivity in continuous mode reveals the semiconducting (SC) character of the nanoparticles. The conductivity of the SC is activated by a hopping phenomenon of small polarons at high temperature. The contribution of conductive grains and resistive boundary regions to the ZnO/Eu transport phenomena is explained by the Nyquist configuration. From this study, it can be concluded that the jump and relaxation processes are thermally activated. These results suggest that the prepared NPs could be considered as a promising candidate for different electronic applications, especially photovoltaic and supercapacitor materials.</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":"793 - 807"},"PeriodicalIF":3.2,"publicationDate":"2025-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145160992","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}
引用次数: 0
Exploring multifunctionality: optical, impedance, and photocatalytic properties of Dy0.5Er0.5CrO3 nanomaterial synthesized via sol-gel method 探索溶胶-凝胶法制备Dy0.5Er0.5CrO3纳米材料的光学、阻抗和光催化性能
IF 3.2 4区 材料科学
Journal of Sol-Gel Science and Technology Pub Date : 2025-07-02 DOI: 10.1007/s10971-025-06856-9
Manjeet Rani, Kuldeep Singh, Amrita Kumari, Meena Laad, Venkata Sreenivas Puli, Neeraj Panwar
{"title":"Exploring multifunctionality: optical, impedance, and photocatalytic properties of Dy0.5Er0.5CrO3 nanomaterial synthesized via sol-gel method","authors":"Manjeet Rani,&nbsp;Kuldeep Singh,&nbsp;Amrita Kumari,&nbsp;Meena Laad,&nbsp;Venkata Sreenivas Puli,&nbsp;Neeraj Panwar","doi":"10.1007/s10971-025-06856-9","DOIUrl":"10.1007/s10971-025-06856-9","url":null,"abstract":"<div><p>The multifunctional properties, including optical, complex impedance, and photocatalytic performance of Dy<sub>0.5</sub>Er<sub>0.5</sub>CrO<sub>3</sub> (DECO) compound fabricated <i>via</i> the sol-gel method have been thoroughly investigated. The optical study revealed an optical bandgap energy of 2.67 eV, indicating its potential for solar-light-driven photocatalytic degradation of harmful organic dyes. The AC-conductivity was investigated as a function of frequency and temperature. Its frequency dependence was found to follow Jonscher’s power law. The temperature-dependent <i>ac</i>-conductivity was explained by two models: the non-overlapping small polaron tunneling (NSPT) model and the correlated barrier hopping (CBH) model. The impedance data analysis revealed a non-Debye type relaxation. The prepared material in this study demonstrated degradation efficiencies of 57% for Methylene Blue (MB) dye and 70% for Rhodamine B (RhB) dye. Notably, the degradation rate for RhB dye was found to be 54% higher than that of MB dye. Better optical, dielectric, and photocatalytic properties make this material useful for multifunctional applications.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div><div><p>Schematic illustration of photocatalytic degradation process of MB and RhB dyes by visible light-irradiated Dy<sub>0.5</sub>Er<sub>0.5</sub>CrO<sub>3</sub> (DECO) nanoparticles.</p></div></div></figure></div></div>","PeriodicalId":664,"journal":{"name":"Journal of Sol-Gel Science and Technology","volume":"115 2","pages":"778 - 792"},"PeriodicalIF":3.2,"publicationDate":"2025-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145161311","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}
引用次数: 0
Facile synthesis of a novel ZnSr-MOF derived SrZnO2/C electrode for enhanced non-enzymatic electrochemical sensing of glucose 一种新型ZnSr-MOF衍生的SrZnO2/C电极的快速合成,用于增强葡萄糖的非酶电化学传感
IF 3.2 4区 材料科学
Journal of Sol-Gel Science and Technology Pub Date : 2025-06-30 DOI: 10.1007/s10971-025-06817-2
Zubaida Fareed, Abdul Rasheed Rashid, Kareem Yusuf, Mushtaq Hussain Lashari, Mehar Un Nisa
{"title":"Facile synthesis of a novel ZnSr-MOF derived SrZnO2/C electrode for enhanced non-enzymatic electrochemical sensing of glucose","authors":"Zubaida Fareed,&nbsp;Abdul Rasheed Rashid,&nbsp;Kareem Yusuf,&nbsp;Mushtaq Hussain Lashari,&nbsp;Mehar Un Nisa","doi":"10.1007/s10971-025-06817-2","DOIUrl":"10.1007/s10971-025-06817-2","url":null,"abstract":"<div><p>A nonenzymatic glucose electrochemical sensor is constructed using a ZnSr-MOF derived SrZnO<sub>2</sub>/C via one step solvothermal method. The fabricated material is characterized via different analytical techniques. Thus, developing an accurate, cost-effective, reliable, and stable glucose sensor is a significant but poses challenges at ultra-low levels. This study addresses glucose detection via a novel bi-metallic ZnSr-MOF derived SrZnO<sub>2</sub>/C based electrode material for electrochemical glucose sensing. The electrochemical properties of the current sensor were evaluated using chronoamperometry, electrochemical impedance spectroscopy (EIS), differential pulse voltammetry (DPV), and cyclic voltammetry (CV). The ZnSr-MOF derived SrZnO<sub>2</sub>/C shows increased current response, and accelerated electron transfer by providing excellent stability, a large electroactive surface area, and electrolyte diffusion. The ZnSr-MOF derived SrZnO<sub>2</sub>/C attained a wide linear range (0.02–0.12 μM), having a limit of detection limit (LOD) of 0.125 μM (S/N = 3.3) with high sensitivity. This work suggests a workable design for a new electrochemical sensing platform that blends biomolecules with bimetallic MOFs.</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":"765 - 777"},"PeriodicalIF":3.2,"publicationDate":"2025-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145171646","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}
引用次数: 0
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