Journal of Sol-Gel Science and Technology最新文献

{"title":"The effect on zirconyl type salt on the phase composition, particle size and sinterability of zirconia based powders obtained via reversed co-precipitation","authors":"Tatiana E. Lomakina,&nbsp;Yaroslav V. Konakov,&nbsp;Ivan Yu. Archakov,&nbsp;Olga Yu. Kurapova,&nbsp;Vladimir G. Konakov","doi":"10.1007/s10971-025-06676-x","DOIUrl":"10.1007/s10971-025-06676-x","url":null,"abstract":"<div><p>Stabilized zirconia is a structural ceramics being of high interest due to large area of applications in industry. Zirconia ceramics is widely used in the fields of hydrogen energy, high temperature oxygen sensing, biomedical applications due to the unique combination of high oxygen-ion conductivity, strength, fracture toughness, and low thermal conductivity. Despite the variety of techniques is available for zirconia powders manufacturing, there is a need for nanosized powders with the controlled particle size distribution and high sinterability. The work aims the study of the nature of the zirconyl salt (nitrate and chloride) on the phase composition, particle size, and crystallization temperatures and enthalpies of the zirconia powders produced via sol-gel synthesis in a variation of the co-precipitation. The undoped zirconia, 4 and 8 mol.% yttria stabilized zirconia (4YSZ and 8YSZ) were studied. Special attention is paid to the differences in the hydrolysis and precipitation behavior taking place during sol-gel synthesis from zirconyl nitrate and chloride salts. The annealing of 4YSZ powder performed in the range 650–1100 °C for 3 h showed the stability of the tetragonal phase. The powders manufactured via the sol-gel method demonstrated excellent sinterability during spark plasma sintering (SPS) compared to the SPS-ed commercial zirconia powders. Undoped zirconia ceramics SPS-ed at 1450 °C for 1 h showed relative density over 99% and Vickers hardness of 730 ± 80 HV0.3, while the ceramics SPS-ed from Tosoh powders at the same conditions showed relative density of 98.2% and Vickers hardness of 280 ± 6 HV0.3.</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":"113 3","pages":"926 - 941"},"PeriodicalIF":2.3,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143422994","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":"Solvent engineering of SnO2 ETL for enhanced performance of carbon-based CsPbIBr2 PSCs","authors":"Tianheng Du,&nbsp;Liguo Jin","doi":"10.1007/s10971-025-06680-1","DOIUrl":"10.1007/s10971-025-06680-1","url":null,"abstract":"<div><p>This study thoroughly investigates the effects of different solvent engineering strategies on the structure and properties of SnO₂ electron transport layers (ETLs) and evaluates their performance-enhancing effects on carbon-based all-inorganic CsPbIBr₂ perovskite solar cells (PSCs). By comparing the SnO₂ ETLs prepared with ethanol (ET-SnO₂) and isopropanol (IPA-SnO₂) solvents and constructing corresponding CsPbIBr₂ PSCs devices, we comprehensively analysed the structure, morphology, wettability, light transmittance and electronic transport properties of the SnO₂ ETLs using characterization methods such as XRD, SEM, contact angle measurement, transmission spectroscopy, steady-state fluorescence spectroscopy and electrochemical impedance spectroscopy. Combined with the J-V characteristics of the device, we revealed the mechanism of the effect of solvent engineering on the performance of PSCs. The results showed that IPA-SnO₂ exhibited better performance with lower contact angle and higher compactness, which is conducive to electron transport and reduces interfacial defects. IPA-SnO₂ also promoted the growth of CsPbIBr₂ crystals, forming larger and denser crystal structures and reducing pinhole defects. In addition, IPA-SnO₂ improves the light transmittance of the FTO substrate and the light absorption of the CsPbIBr₂ film, thereby increasing the light trapping efficiency. Finally, the IPA-SnO₂-based PSCs achieved a PCE of 5.95%, an improvement of 25% compared to ET-SnO₂, demonstrating good application prospects. This study provides an important experimental basis for optimizing the preparation process of SnO₂ ETL and improving the performance of carbon-based CsPbIBr₂ PSCs.</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":"113 3","pages":"942 - 951"},"PeriodicalIF":2.3,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143423063","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":"Density functional theory studies on the reaction mechanism of alumina synthesis with a new sol-gel routine","authors":"Xianbo Liu,&nbsp;Hongjie Bai,&nbsp;Zhengshang Wang,&nbsp;Wen Cui,&nbsp;Hang Chen,&nbsp;Feng Wang,&nbsp;Xudong Cui","doi":"10.1007/s10971-024-06584-6","DOIUrl":"10.1007/s10971-024-06584-6","url":null,"abstract":"<div><p>Alumina is a widely used advanced ceramic material whose properties depend on the particle size, porosity and purity of the ceramic. Powder with high quality is the key to get high performance alumina. Among those powder synthesis methods, the sol-gel method is considered to be a good route to get high quality powders. However, the existing sol-gel methods for preparing alumina still have some disadvantages, such as complicated process and high production cost of the raw material (aluminum alkoxide). With the assistance of density functional theory, we aim to explain the reaction mechanism of alumina powder synthesis by an improved sol-gel routine. This is expected to solve the above-mentioned disadvantages. In this study, the hydrolysis-polymerization mechanism of tris(dimethylamino)aluminum (Al(NMe₂)₃) monomer and dimer were investigated at the level of B3LYP-D3BJ/6-311G(d,p) using Gaussian16 software. It provides a theoretical guidance for experimental studies on the synthesis of alumina powders. The results show that the hydrolysis reaction of Al(NMe₂)₃ monomer is completed in three steps, all of which are spontaneous and can occur rapidly. The calculated polymerization reaction is also spontaneous, but the depolymerization reaction can hardly occur due to the high energy barrier. The hydrolysis of the dimer is finished in six steps, all of which are spontaneous, including the calculated polymerization reaction. Our studies show that the hydrolysis-polymerization reaction of Al(NMe₂)₃ dimer is theoretically feasible and can be used to prepare alumina. In addition, alumina powder was synthesized using above method, verified the feasibility of it.</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":"113 3","pages":"910 - 925"},"PeriodicalIF":2.3,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143422946","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":"Development of two novel supramolecular metallogels of Mn(II) and Zn(II)-ion derived from L-(+) tartaric acid for fabricating light responsive junction type semiconducting diodes with non-ohmic conduction mechanism","authors":"Subhendu Dhibar,&nbsp;Arka Dey,&nbsp;Bijnaneswar Mondal,&nbsp;Kripasindhu Karmakar,&nbsp;Arpita Roy,&nbsp;Subham Bhattacharjee,&nbsp;Aditi Trivedi,&nbsp;Aiswarya Mohan,&nbsp;Ratnakar Saha,&nbsp;Priyajit Chatterjee,&nbsp;Aniruddha Mondal,&nbsp;Timothy O. Ajiboye,&nbsp;Bidyut Saha","doi":"10.1007/s10971-025-06673-0","DOIUrl":"10.1007/s10971-025-06673-0","url":null,"abstract":"<div><p>A rapid development strategy was successfully implemented to create a suEPSR111459pramolecular metallogel comprising Mn(II) (referred to as MnA-TA) and Zn(II) (referred to as ZnA-TA) ions. These gels were formed using L-(+)-tartaric acid as a low molecular weight gelator in DMF medium at ambient conditions. Rheological analysis was employed to assess the mechanical stability of the synthesized MnA-TA and ZnA-TA metallogel. The results of the analysis revealed the gel’s impressive resilience when subjected to various angular frequencies and levels of oscillator stress. The exploration of MnA-TA and ZnA-TA metallogel’s distinct morphological patterns was conducted using FESEM images. FESEM analysis revealed that MnA-TA metallogel exhibited a flake-like hierarchical network structure, while ZnA-TA metallogel demonstrated a diamond-shaped architecture. EDX analysis was utilized for elemental mapping, confirming the presence of primary chemical constituents in the metallogels. The formation strategy and nature of the gel materials were examined through FT-IR spectroscopy and PXRD analysis. The synthesized metallogels exhibited semiconducting properties, as confirmed by optical band-gap measurements. Furthermore, a metal-semiconductor junction-based device was successfully fabricated by combining Al metal with Mn(II)- and Zn(II)-metallogels. The device displayed nonlinear charge transport behavior, resembling that of a Schottky diode, as evidenced by its I-V characteristic. This indicates the potential use of the sandwich-like configuration of ITO/MnA-TA metallogel/Al and ITO/ZnA-TA metallogel/Al in the development of advanced electronic devices based on supramolecular Mn(II)- and Zn(II)-metallogels. Notably, the direct utilization of tartaric acid and Mn(II)/Zn(II) sources in the MnA-TA and ZnA-TA metallogels presents an innovative approach, highlighting their suitability as semiconducting materials for device fabrication. This study delves into the multifunctional applications of MnA-TA and ZnA-TA metallogels, providing valuable insights for researchers in the field of material science.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><img></picture></div><div><p>Derived from a low molecular weight gelator tartaric acid, supramolecular metallogels composed of Mn(II)- and Zn(II)-ions demonstrate remarkable stability at room temperature offer promising prospects for integration into electronic devices, specifically Schottky barrier diodes, operating effectively at room temperature.</p></div></div></figure></div></div>","PeriodicalId":664,"journal":{"name":"Journal of Sol-Gel Science and Technology","volume":"113 3","pages":"896 - 909"},"PeriodicalIF":2.3,"publicationDate":"2025-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10971-025-06673-0.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143423497","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":"Exploring the ZnO/CuO/g-C3N4 nanocomposite for superior energy storage capabilities","authors":"C. Thirupathi,&nbsp;J. Bosco Franklin,&nbsp;J. Mohemed Ali,&nbsp;M. Mercy Jenifer,&nbsp;M. Sangamithirai,&nbsp;S. John Sundaram,&nbsp;Mir Waqas Alam,&nbsp;Pitcheri Rosaiah","doi":"10.1007/s10971-025-06671-2","DOIUrl":"10.1007/s10971-025-06671-2","url":null,"abstract":"<div><p>In this study, the synthesis and electrochemical performance of a zinc oxide/copper oxide/graphitic carbon nitride ZnO/CuO/g-C₃N₄ composite for energy storage applications were investigated. The synthesis was carried out using a multi-step process, where ZnO/CuO was prepared via co-precipitation, and g-C₃N₄ was synthesized through thermal polymerization. Fourier-transform infrared spectroscopy (FTIR) revealed the presence of metal-oxide bonds and carbon-nitrogen functional groups, verifying the successful integration of g-C₃N₄ into the ZnO/CuO system. UV-visible absorption studies exhibited a red shift and a broader absorption band in the ZnO/CuO/g-C₃N₄ composite, indicating enhanced optical properties, which are favorable for energy storage applications. Furthermore, cyclic voltammetry (CV) measurements demonstrated superior capacitance and excellent rate capability, achieving a specific capacitance of 253 F/g at a scan rate of 10 mV/s. The combined structural, optical, and electrochemical properties of the ZnO/CuO/g-C₃N₄ composite underscore its potential as an advanced material for energy storage 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":"113 3","pages":"885 - 895"},"PeriodicalIF":2.3,"publicationDate":"2025-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143423397","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":"Synthesize and characterization of a novel sol–gel-driven Bi2O3 semiconductor: complete degradation and fast photocatalytic activity for paracetamol","authors":"Derman Akşit,&nbsp;Cigdem Sayil,&nbsp;Gülin Selda Pozan Soylu","doi":"10.1007/s10971-025-06668-x","DOIUrl":"10.1007/s10971-025-06668-x","url":null,"abstract":"<div><p>The pollutants are getting released fluently as a waste from the pharmaceutical pollutants leading to the decrease in quality of water. The widespread occurrence of pharmaceutical pollutants poses a serious threat to the environment and human health. Besides, today carbon dioxide emissions and other forms of pollution appear to be a critical global issue. In this study, Bi₂O₃ catalyst has been prepared via co-precipitation (CP) and a facile sol–gel (SG) methods used as photocatalyst for the degradation of paracetamol (PAR) under different light sources. The preparation method has significant effect on the optical and structural properties of the catalysts. The tetragonal phase of Bi₂O₃, the presence of more surface OH groups and lower band gap energy remarkably improved the sun-light-driven photoactivity of PAR. The photocatalysts have been characterized by some structural and morphological analysis techniques and optical analysis techniques. In addition, zeta potential (ZP) measurements were performed to explain the impact of the initial pH of solution on photocatalytic degradation. Identification of PAR and the reaction intermediates was determined using Liquid Chromatography-Mass/Mass Spectrometry (LC-MS/MS) technique. Higher photocatalytic activity was obtained with the Bi₂O₃-SG (1:2) catalyst at pH 5 compared to the activity of Bi₂O₃-CP. Moreover, Bi₂O₃-SG (1:2) achieved the highest photocatalytic activity at pH 3. The photocatalytic activity was enhanced, and the time required for 100% degradation of PAR was reduced from 60 min to 30 min and 15 min under UVB irradiation and directly sun light irradiation, respectively. The highest reaction rate (0.086 (min⁻¹)) were obtained in 15 min with the Bi₂O₃-SG (1:2) catalyst. The results showed TOC removal could be achieved in 60 min 99.19 and 88.97% for Bi₂O₃-SG and Bi₂O₃-CP, respectively. In general, sol–gel-driven Bi₂O₃ as a flower and needle-like morphology, can reveal excellent opportunities in the photocatalytic technology.</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":"113 3","pages":"868 - 884"},"PeriodicalIF":2.3,"publicationDate":"2025-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10971-025-06668-x.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143423268","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":"Facile fabrication of binary metal chalcogenides (MS@NS) for supercapacitors applications via hydrothermal route","authors":"Muhammad Zeshan,&nbsp;Salma Eman,&nbsp;Ahmed M. Fallatah,&nbsp;Mohamed M. Ibrahim,&nbsp;Abdulraheem SA Almalki,&nbsp;Muhammad Aslam,&nbsp;Zeinhom M. El-Bahy","doi":"10.1007/s10971-025-06665-0","DOIUrl":"10.1007/s10971-025-06665-0","url":null,"abstract":"<div><p>This work conducts an experimental comparison of various binary transition metal selenides (BTMSe’s) to discover promising materials for supercapacitor (SCs) electrodes. Researchers are currently investigating the potential of selenide-based materials and their nanostructures in the realm of energy storage devices. Although, there is limited research examining the practicality of employing BTMSe’s as electrode materials. Herein, selenide-based materials such as MnSe, NbSe₂ and their nanocomposite MnSe@NbSe₂ were synthesized via the hydrothermal technique. Supercapacitors (SCs) with exceptional characteristics were observed, notably outstanding cycling stability exceeding 6000th cycle, specific energy (58.72 Wh kg⁻¹), specific power (281 Wh kg⁻¹), and specific capacitance (<i>C</i>_sp) of 2079 F g⁻¹ at 1 A g⁻¹, as indicated by thorough analysis. There is a significant consensus in material synthesis methods and a plethora of new insights into the charge-storage process in emerging capacitive electrodes for future storage 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":"113 3","pages":"855 - 867"},"PeriodicalIF":2.3,"publicationDate":"2025-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143423269","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":"The effects of substrates on the structural, morphological, magnetic and electronic properties of V2O5 thin films","authors":"R. S. Gupta,&nbsp;Sachin Pandey,&nbsp;A. Ghosh,&nbsp;S. K. Sahoo,&nbsp;A. Rahaman,&nbsp;U. K. Goutam,&nbsp;S. Pandey,&nbsp;V. R. Singh","doi":"10.1007/s10971-025-06666-z","DOIUrl":"10.1007/s10971-025-06666-z","url":null,"abstract":"<div><p>This study highlights the influence of various substrates on the structural integrity, phase purity, morphology, composition, magnetic properties, and electronic behavior of V₂O₅ thin films synthesized through chemical solution methods on Si (111), ITO-coated glass, and glass substrates. The amorphous and smooth surfaces of the films were found on glass substrates, while those on ITO-coated glass and Si (111) substrates displayed a polycrystalline nature, with crystallinity increasing from ITO-coated glass to Si. Atomic force microscopy (AFM) confirmed the RMS roughness of the films, and morphology was conducted using high-resolution scanning electron microscopy (HR-SEM) and also energy-dispersive spectroscopy (EDS) mapping for elemental characterization. To know the functional groups present in the samples, Fourier-transform infrared (FT-IR) spectroscopy was employed. The band gap, measured by UV-Vis spectroscopy, ranged from 0.79 ± 0.01 to 0.9 ± 0.01 eV. The bulk magnetization measurements suggest that it exhibits ferromagnetic (FM) behavior with a saturation magnetization of 0.0–0.5 µB/cc. Core-level spectroscopy revealed that vanadium exists in a mixed oxidation state of 5+ and 4+. Findings from XPS, HR-SEM, and UV-Vis measurements confirm oxygen vacancies have a significant role in reducing the band gap and enhancing FM-like behavior in V₂O₅/Si films, which are also influenced by the films’ crystallinity and morphology. These results could pay great attention to the development of spintronic 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":"113 3","pages":"837 - 844"},"PeriodicalIF":2.3,"publicationDate":"2025-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143423195","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":"Effect of copper sulfide nanoparticle incorporation on cost-effective carbon-based hole-transport-free perovskite solar cells","authors":"Mahdieh Mirzaei,&nbsp;Mohsen Shojaeifar,&nbsp;Mehdi Tajaldini","doi":"10.1007/s10971-024-06653-w","DOIUrl":"10.1007/s10971-024-06653-w","url":null,"abstract":"<div><p>This investigation posits the development of an economically feasible graphite-based carbon electrode for use in hole transport-free perovskite solar cells. The weight ratio of graphite was systematically optimized, and the incorporation of copper sulfide nanoparticles was implemented to augment the electrical characteristics of the carbon-based electrode. Copper sulfide nanoparticles were synthesized through a hydrothermal method and subsequently combined with pre-prepared carbon paste to produce CuS-modified carbon electrodes. The synthesized nanoparticles exhibit flower-like morphologies with crystalline nanosheets measuring approximately 30 nanometers. The influence of varying doping ratios of CuS nanoparticles on the electrical properties of carbon-based hole transport-free perovskite solar cells was meticulously examined. The integration of CuS nanoparticles into the carbon electrode facilitates enhanced charge extraction, thereby resulting in increased current density within the perovskite solar cells. The suggested carbon-based hole transport-free perovskite solar cell demonstrates adequate stability over a duration exceeding one year.</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":"113 3","pages":"845 - 854"},"PeriodicalIF":2.3,"publicationDate":"2025-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143423196","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":"Activating design of tunable CuCo2O4@NiMnO3 heterostructure towards superior oxygen evolution reaction","authors":"Adel El-marghany,&nbsp;Muhammad Khalil,&nbsp;Abdul Wahab Haroon,&nbsp;Fawad Ahmad,&nbsp;Ome Parkash Kumar,&nbsp;Abdul Ghafoor Abid,&nbsp;Shahroz Saleem,&nbsp;Zobia Siddique","doi":"10.1007/s10971-024-06645-w","DOIUrl":"10.1007/s10971-024-06645-w","url":null,"abstract":"<div><p>The cost-effective electrocatalyst for oxygen evolution is an essential substitute for the growing energy needs as well as to energy conversion devices. The CuCo₂O₄@NiMnO₃ heterostructure is prepared by a one-step solvothermal method on stainless steel strip (SSS) support and was subsequently investigated for oxygen evolution reaction (OER). The hydrothermally developed metallic oxide electrocatalysts were confirmed by using several techniques to investigate physical features. The integration of Cu and Co with bimetallic NiMnO₃ has improved charge transfer capabilities by giving rise to active sites. The potential CuCo₂O₄@NiMnO₃ electrocatalyst demonstrated an overpotential of 134 mV, a lowered Tafel slope of 26.17 mVdec⁻¹, and a high turnover frequency of 0.06 s⁻¹ at the current density of 10 mA cm⁻². In addition, it shows that OER required a low operating potential of 1.48 V in 1 M KOH solution. Besides, CuCo₂O₄@NiMnO₃ heterostructure displays optimal free energy prerequisite for reactant adsorption, a substantial electroactive surface area of 33.1 cm⁻². Furthermore, it provides exceptional stability for 100 h in regulated electrolysis experiments with no discernible decrease in OER activity. This study offers a simple synthetic method for creating effective, low-cost, and binder-free electrocatalysts.</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":"113 3","pages":"804 - 818"},"PeriodicalIF":2.3,"publicationDate":"2025-01-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143423496","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}