{"title":"Synthesis and electrochemical evaluation of WS2/WO3-x heterostructure for binder-free high-performance supercapacitors","authors":"Nishtha Sagta, P.V. Sada, Ajay Kumar Mishra","doi":"10.1016/j.mseb.2026.119256","DOIUrl":"10.1016/j.mseb.2026.119256","url":null,"abstract":"<div><div>Transition metal-based electrodes are the forefront of advanced supercapacitor research due to their tunable redox activity and structural versatility. In this work, a binary composite tungsten disulfide/tungsten oxide (WS<sub>2</sub>/WO<sub>3-x</sub>) material was synthesized via an atmospheric pressure chemical vapor deposition (APCVD) technique and its application as a binder-free electrode for high-performance supercapacitors is studied. The as-synthesized WS<sub>2</sub>/WO<sub>3-x</sub> binary composite possesses a hierarchical flower-rod like morphology, resulting in combined electric double-layer and pseudocapacitive capacitance. A symmetric supercapacitor is assembled by coating WS<sub>2</sub>/WO<sub>3-x</sub> on a carbon cloth. The symmetric supercapacitor delivers an excellent specific capacitance of 380.8 F/g at 0.083 A/g with an energy density of 33.8 Wh/kg and power density of 133.3 W/kg. The electrode retains 84% of its initial capacitance after 2100 cycles at a current density of 2.6 A/g, underscoring its excellent cycling stability. Thus, these observed excellent electrochemical performances establish the WS<sub>2</sub>/WO<sub>3-x</sub> binary composite based electrodes, suggesting their tremendous potential as supercapacitor electrodes for energy storage systems.</div></div>","PeriodicalId":18233,"journal":{"name":"Materials Science and Engineering: B","volume":"327 ","pages":"Article 119256"},"PeriodicalIF":4.6,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146190521","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Er–Tm co-doped δ-Bi₂O₃ electrolytes: structural stability and high oxide-ion conductivity for IT-SOFC applications","authors":"Yasin Polat , İsmail Çalikuşu","doi":"10.1016/j.mseb.2026.119259","DOIUrl":"10.1016/j.mseb.2026.119259","url":null,"abstract":"<div><div>In this study, (Bi₂O₃)₁₋ₓ₋ᵧ(Er₂O₃)ₓ(Tm₂O₃)ᵧ ternary solid solutions were synthesized via a solid-state reaction method to achieve high oxygen-ion conductivity and phase stability for intermediate-temperature solid oxide fuel cells (IT-SOFCs). High-purity Bi₂O₃, Er₂O₃, and Tm₂O₃ powders were mixed in stoichiometric ratios and subjected to calcination, pressing, and sintering steps. Their structural, thermal, and electrical properties were then examined in detail. X-ray diffraction (XRD) analysis confirmed that all samples retained the δ-Bi₂O₃ phase at room temperature, indicating the formation of a single-phase crystalline structure. Crystallite size calculations revealed that increasing the dopant concentration reduced the grain size to the 35–45 nm range and intensified lattice defects. Electrical conductivity measurements exhibited Arrhenius-type behavior with distinct activation energies in the low- and high-temperature regimes. Notably, the E5T composition (20 mol% Er₂O₃ – 5 mol% Tm₂O₃) achieved the highest conductivity of approximately 1.14 × 10<sup>−1</sup> Ω<sup>−1</sup>·cm<sup>−1</sup> at 750 °C and the lowest activation energy of 1.33 eV. Thermogravimetric (TG) and differential thermal analysis (DTA) results showed no significant mass loss between 100 and 600 °C and revealed no clear endothermic or exothermic peaks associated with phase transitions, confirming excellent thermal stability. These findings demonstrate that co-doping with Er and Tm enhances both the oxygen-ion conductivity and the long-term thermal durability of δ-Bi₂O₃-based systems. Such characteristics position these materials as a strong alternative to conventional YSZ electrolytes for high-performance IT-SOFC applications operating at lower temperatures.</div></div>","PeriodicalId":18233,"journal":{"name":"Materials Science and Engineering: B","volume":"327 ","pages":"Article 119259"},"PeriodicalIF":4.6,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146080270","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Mn4+-doped Sr2CaWO6 red phosphors for enhanced forensic fingerprint analysis","authors":"Sung Jun Park , Woo Tae Hong , Hyun Kyoung Yang","doi":"10.1016/j.mseb.2026.119257","DOIUrl":"10.1016/j.mseb.2026.119257","url":null,"abstract":"<div><div>Mn<sup>4+</sup> doped Sr<sub>2</sub>CaWO<sub>6</sub> phosphors with different Mn<sup>4+</sup> ion concentration (0.1, 0.3, 0.5, 0.7, 1.0, and 3.0 mol%) were synthesized using solid-state reaction method. The structure, composition, morphology, and photoluminescence of Sr<sub>2</sub>CaWO<sub>6</sub>:Mn<sup>4+</sup> phosphors were investigated in this experiment. The Sr<sub>2</sub>CaWO<sub>6</sub>:Mn<sup>4+</sup> phosphors have a well-crystallized structure. The particle size of Sr<sub>2</sub>CaWO<sub>6</sub>:Mn<sup>4+</sup> phosphors is about several micrometers. The band gap value for Sr<sub>2</sub>CaWO<sub>6</sub>:Mn<sup>4+</sup> phosphors is 3.70 eV. Sr<sub>2</sub>CaWO<sub>6</sub>:Mn<sup>4+</sup> phosphors showed a deep red emission centered at 687 nm under excitation at 320 nm. The optimal doping concentration of Sr<sub>2</sub>CaWO<sub>6</sub>:Mn<sup>4+</sup> phosphors was found to be 0.7 mol%. The prepared phosphors were employed for fingerprint visualization on several substrates (stainless steel, glass, plastic card, and currency), resulting in improved resolution of the fingerprint patterns. The detailed patterns of fingerprint with different levels (1–3) can be clearly observed. These results show that Sr<sub>2</sub>CaWO<sub>6</sub>:Mn<sup>4+</sup> phosphors have promising applications for latent fingerprint detection.</div></div>","PeriodicalId":18233,"journal":{"name":"Materials Science and Engineering: B","volume":"327 ","pages":"Article 119257"},"PeriodicalIF":4.6,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146080932","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Yu Zhao , P.C. Nagajyothi , Ballipalli Chandra Babu , Sarah A. Alshehri , Jaesool Shim , Prasad Kumcham
{"title":"Urea-assisted hydrothermal synthesis of Co3O4/SnO2 composites as a battery-type material for hybrid supercapacitors","authors":"Yu Zhao , P.C. Nagajyothi , Ballipalli Chandra Babu , Sarah A. Alshehri , Jaesool Shim , Prasad Kumcham","doi":"10.1016/j.mseb.2026.119269","DOIUrl":"10.1016/j.mseb.2026.119269","url":null,"abstract":"<div><div>Metal oxide composites exhibiting battery-like behavior have attracted increasing attention for application in hybrid supercapacitors (HSCs). The combination of two distinct metal oxides enhances electrochemical activity compared to either oxide alone. In this study, Co₃O₄/SnO₂ composites were synthesized via a hydrothermal method using varying amounts of urea as a structure-directing agent. Four samples, designated CoSn-1, CoSn-2, CoSn-3, and CoSn-4, were prepared with 1, 2, 4, and 8 mmol of urea, respectively. The influence of urea concentration on the structural, morphological, and surface properties of the composites was systematically investigated. Among these, CoSn-3 exhibited a uniform rod-like morphology with small nanoparticles, resulting in an optimal balance of surface area and pore structure. All CoSn electrodes demonstrated battery-type characteristics; however, CoSn-3 achieved the highest specific capacity of 524.00C g<sup>−1</sup> at 0.5 A g<sup>−1</sup> and retained 93% of its initial capacity after 5000 cycles at 5 A g<sup>−1</sup>, indicating excellent capacity retention and long-term stability. These findings suggest that tuning the urea content during synthesis can significantly enhance the electrochemical performance of battery-type metal oxide composites in HSCs.</div></div>","PeriodicalId":18233,"journal":{"name":"Materials Science and Engineering: B","volume":"327 ","pages":"Article 119269"},"PeriodicalIF":4.6,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146190394","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Weihai Chen , Ruirui Cui , Xingyang Peng , Chonghui Qi , Zhanghai Tian , Chaoyong Deng
{"title":"Er3+-activated BaLa2WO7 multifunctional green phosphors for optical temperature sensing, fingerprint visualization and WLEDs","authors":"Weihai Chen , Ruirui Cui , Xingyang Peng , Chonghui Qi , Zhanghai Tian , Chaoyong Deng","doi":"10.1016/j.mseb.2026.119254","DOIUrl":"10.1016/j.mseb.2026.119254","url":null,"abstract":"<div><div>In this study, a series of Er<sup>3+</sup>-doped BaLa<sub>2</sub>WO<sub>7</sub> phosphor materials have been successfully synthesized by high-temperature solid-phase reaction method. By structural and morphological characterization, it was confirmed that Er<sup>3+</sup> was effectively doped into the BaLa<sub>2</sub>WO<sub>7</sub> matrix lattice. Under excitation from light sources at wavelengths of 379 and 980 nm, the BaLa<sub>2</sub>WO<sub>7</sub>:Er<sup>3+</sup> fluorescent powder exhibits green luminescence centered at 528 and 547 nm. Benefiting from the splitting of luminescence center peaks and based on the fluorescence intensity ratio (FIR) technique, this study innovatively proposes a multi-peak, multi-concentration comparison method to achieve dual-mode temperature sensing, thereby improving the sensitivity performance of temperature measurements. The maximum relative sensitivity and absolute sensitivity of the down-converted luminescence were 1.381% K<sup>−1</sup> (473 K) and 1.474% K<sup>−1</sup> (298 K), respectively, over the temperature range of 298–473 K, while the maximum relative sensitivity and absolute sensitivity of the up-converted luminescence were 1.27% K<sup>−1</sup> (473 K) and 0.97% K<sup>−1</sup> (298 K), respectively. Under 379 nm UV excitation, the optimal doping concentration of Er<sup>3+</sup> was determined to be 3%, and a white LED device with high color rendering index (<em>R</em><sub>a</sub> = 81.2) and low color temperature (5161 K) was successfully prepared based on the BaLa<sub>2</sub>WO<sub>7</sub>:3%Er<sup>3+</sup> phosphor. In addition, the phosphor demonstrated excellent performance in fingerprint visualization applications, enabling high-contrast imaging of tertiary fingerprint features. The results indicate that the Er<sup>3+</sup>-doped BaLa<sub>2</sub>WO<sub>7</sub> fluorescent material not only possesses excellent optical temperature sensing capability, but also has a promising application in the fields of white light LED illumination and fingerprint visualization.</div></div>","PeriodicalId":18233,"journal":{"name":"Materials Science and Engineering: B","volume":"327 ","pages":"Article 119254"},"PeriodicalIF":4.6,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146189931","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Leila Taghavi ranjbar , Seyed Mohammad Mirkazemi , Amir Masoud AArabi
{"title":"Synergistic effect of CoFe2O4 and Ag nanoparticles on TiO2 Photoanodes for high-efficiency dye-sensitized solar cells with and without external magnetic field","authors":"Leila Taghavi ranjbar , Seyed Mohammad Mirkazemi , Amir Masoud AArabi","doi":"10.1016/j.mseb.2026.119264","DOIUrl":"10.1016/j.mseb.2026.119264","url":null,"abstract":"<div><div>In this work, dye-sensitized solar cells (DSSCs) were fabricated using TiO<sub>2</sub> photoanodes modified with ferromagnetic CoFe<sub>2</sub>O<sub>4</sub> and plasmonic Ag nanoparticles and evaluated under standard conditions and an external magnetic field (B = 25 mT). Different weight percentages of CoFe<sub>2</sub>O<sub>4</sub> and Ag were incorporated into the TiO<sub>2</sub> matrix to optimize photovoltaic efficiency. Structural and morphological characterization (XRD, FESEM/BSE, and EDS) confirmed successful incorporation and distribution of the additives. Tauc analysis showed a pronounced optical-edge shift from 3.20 eV (TiO<sub>2</sub>) to 2.80 eV for TiO<sub>2</sub>/6 wt% CoFe<sub>2</sub>O<sub>4</sub>/0.6 wt% Ag, dominated by CoFe<sub>2</sub>O<sub>4</sub>incorporation (Ag contributes mainly via plasmonic/interfacial effects). The TiO<sub>2</sub>/6 wt% CoFe<sub>2</sub>O<sub>4</sub>/0.6 wt% Ag composite photoanode achieved a power conversion efficiency (PCE) of 6.23% under standard conditions, a 97% improvement over the 3.16% PCE of pure TiO<sub>2</sub>. Under the magnetic field, the TiO<sub>2</sub>/6 wt% CoFe<sub>2</sub>O<sub>4</sub> photoanode exhibited the highest PCE of 7.3%, whereas the three-component TiO<sub>2</sub>/6 wt% CoFe<sub>2</sub>O<sub>4</sub>/0.6 wt% Ag photoanode displayed only a slight improvement to 6.51% compared to its field-free condition. In contrast, Ag-only modification exhibited a performance decrease under the magnetic field (3.99% to 3.46% for 0.6 wt% Ag). These findings highlight the effectiveness of CoFe<sub>2</sub>O<sub>4</sub> and Ag-modified TiO<sub>2</sub> photoanodes in improving DSSC performance, particularly with passive magnetic field assistance, demonstrating significant potential for advancing solar energy conversion technologies through tailored nanocomposite photoanodes.</div></div>","PeriodicalId":18233,"journal":{"name":"Materials Science and Engineering: B","volume":"327 ","pages":"Article 119264"},"PeriodicalIF":4.6,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146190441","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Hira Arif , Hassan Akbar , Ayesha Bibi , Zeynep Ciğeroğlu , S.A. Abd El-Azeem , Jeong Ryeol Choi , Asghar Ali
{"title":"Design and optimization of ZnO/MnO2 nanocomposites for enhanced energy storage in supercapacitor applications","authors":"Hira Arif , Hassan Akbar , Ayesha Bibi , Zeynep Ciğeroğlu , S.A. Abd El-Azeem , Jeong Ryeol Choi , Asghar Ali","doi":"10.1016/j.mseb.2026.119281","DOIUrl":"10.1016/j.mseb.2026.119281","url":null,"abstract":"<div><div>Developing high-performance electrode materials remains a major challenge for advancing supercapacitor technology, primarily due to the limited electrical conductivity and cycling instability of conventional transition-metal oxides. In this work, ZnO/MnO<sub>2</sub> nanocomposites were synthesized via a hydrothermal route to exploit the complementary properties of MnO<sub>2</sub>'s pseudocapacitive redox activity and ZnO's structural stability and electron transport capability. Structural and morphological analyses by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and energy-dispersive X-ray spectroscopy (EDX) confirmed the successful formation of a ZnO/MnO₂ composite with strong interfacial coupling. Cyclic voltammetry (CV), galvanostatic charge-discharge (GCD), and electrochemical impedance spectroscopy (EIS) in a three-electrode configuration were used to determine the electrochemical performance. Electrochemical characterization demonstrated significantly enhanced capacitance and charge-storage kinetics, achieving 1152 F g<sup>−1</sup> at 0.8 A g<sup>−1</sup> (GCD) and 685 F g<sup>−1</sup> at 5 mV/s (CV). The composite further delivered an energy density of 31.4 Wh kg<sup>−1</sup> and a power density of 712 W kg<sup>−1</sup>, supported by reduced charge-transfer resistance in EIS. These results confirm a well-balanced capacitive and diffusion-controlled contribution in the combined composites, indicating synergistic charge-transfer kinetics and further clarifying the charge-storage process, as described by Dunn's model. The findings underscore ZnO/MnO<sub>2</sub> nanocomposites as promising electrode materials capable of delivering high energy-storage efficiency and improved cycling behavior, providing a viable pathway toward advanced next-generation supercapacitors.</div></div>","PeriodicalId":18233,"journal":{"name":"Materials Science and Engineering: B","volume":"327 ","pages":"Article 119281"},"PeriodicalIF":4.6,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146190391","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Huiwei Ding , Minghui Wei , Wenpei Peng , Chaoyun Yan , Keiko Sasaki , Qiaofeng Han
{"title":"Low-temperature synthesis of Bi5O7I-Bi4O5I2 solid solution/residual carbon composites with oxygen vacancies for efficient visible-light photocatalysis","authors":"Huiwei Ding , Minghui Wei , Wenpei Peng , Chaoyun Yan , Keiko Sasaki , Qiaofeng Han","doi":"10.1016/j.mseb.2026.119275","DOIUrl":"10.1016/j.mseb.2026.119275","url":null,"abstract":"<div><div>In this study, using bismuth citrate instead of bismuth nitrate significantly reduced the calcination temperature required for synthesizing Bi<sub>5</sub>O<sub>7</sub>I-Bi<sub>4</sub>O<sub>5</sub>I<sub>2</sub> solid solution. Furthermore, oxygen vacancies (OVs) and residual carbon from the incomplete decomposition of citrate groups were successfully introduced into the resulting composite. The existence of OVs and carbon could promote the carrier separation and thus enhance the photocatalytic activity. Hence, the resulting square sheet-like Bi<sub>5</sub>O<sub>7</sub>I-Bi<sub>4</sub>O<sub>5</sub>I<sub>2</sub> solid solution/carbon (denoted as O-mBBI/C) composites exhibited superior photocatalytic activity for the degradation of 20 mg·L<sup>−1</sup> of tetracycline (TC) and methylene blue (MB) under irradiation of visible light, with apparent rate constants of 0.04809 min<sup>−1</sup> and 0.02530 min<sup>−1</sup>, respectively, which were higher than those of pure BiOI (0.00354 min<sup>−1</sup>, 0.00234 min<sup>−1</sup>) and Bi<sub>5</sub>O<sub>7</sub>I/C (0.00539 min<sup>−1</sup>, 0.00429 min<sup>−1</sup>). Furthermore, O-mBBI/C showed superior photodegradation activity for other pollutants, such as 20 mg·L<sup>−1</sup> bisphenol A (BPA), 10 mg·L<sup>−1</sup> rhodamine B (RhB), 20 mg·L<sup>−1</sup> methyl violet (MV), etc.</div></div>","PeriodicalId":18233,"journal":{"name":"Materials Science and Engineering: B","volume":"327 ","pages":"Article 119275"},"PeriodicalIF":4.6,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146190389","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Shahin Parveen , Nidhi Bhatt , Abdul Whab , Mohammad Moeen Hasan Raza , Vinod Erkkara Madhavan , Pumlianmunga
{"title":"Effects of As2S3 incorporation on the structural, optical and electrical properties of Ge2Sb2Te5 films for phase change memory","authors":"Shahin Parveen , Nidhi Bhatt , Abdul Whab , Mohammad Moeen Hasan Raza , Vinod Erkkara Madhavan , Pumlianmunga","doi":"10.1016/j.mseb.2026.119283","DOIUrl":"10.1016/j.mseb.2026.119283","url":null,"abstract":"<div><div>This work explores the effects of As<sub>2</sub>S<sub>3</sub> doping on the structural, thermal, and electrical properties of Ge<sub>2</sub>Sb<sub>2</sub>Te<sub>5</sub> (GST) thin films, aiming to enhance their suitability for phase change memory (PCM) applications. A series of As<sub>2</sub>S<sub>3</sub>-doped GST compositions are synthesized and analyzed using XRD, Raman spectroscopy, VIS-NIR spectroscopy, thermal and electrical measurements. The results indicate that As<sub>2</sub>S<sub>3</sub> incorporation effectively suppresses crystallization, enhances amorphous phase stability, and improves thermal endurance. The 10-year data retention temperature increased from 78 °C (GST) to 106.7 °C at 21 at.% of As<sub>2</sub>S<sub>3</sub>. Electrical switching measurements showed a decrease in threshold current. Furthermore, COMSOL Multiphysics simulations revealed enhanced thermal confinement and more localized heating in the doped films, which directly influence power consumption. These findings suggest that As<sub>2</sub>S<sub>3</sub>-doped GST offers a promising direction toward high-performance and thermally stable PCM devices.</div></div>","PeriodicalId":18233,"journal":{"name":"Materials Science and Engineering: B","volume":"327 ","pages":"Article 119283"},"PeriodicalIF":4.6,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146190519","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Alex M. Neris , Charlie Salvador , Ubiratan C. Silva , Carlos Chesman , Giovanna Machado , Elson Longo , Ieda M.G. Santos
{"title":"Magnetic photocatalysts based on ferrite@ZrO2@TiO2 core-shell systems for degradation of aqueous pollutants","authors":"Alex M. Neris , Charlie Salvador , Ubiratan C. Silva , Carlos Chesman , Giovanna Machado , Elson Longo , Ieda M.G. Santos","doi":"10.1016/j.mseb.2026.119241","DOIUrl":"10.1016/j.mseb.2026.119241","url":null,"abstract":"<div><div>The versatility of core@shell systems comes from the combination of multiple properties, considering the specificity of each materials. In the present work, photocatalysts easily separated from the aqueous media were obtained, by the use of core@shell systems, CoMnFe<sub>2</sub>O<sub>4</sub>@ZrO<sub>2</sub>@TiO<sub>2</sub>, with different proportions of ZrO<sub>2</sub> and TiO<sub>2</sub>. The materials were synthesized by the modified Pechini method and characterized in relation to its structural, physical and morphological properties. The photocatalytic efficiency was evaluated using a cationic as target. All photocatalysts were easily separated from the aqueous solution using a magnet, despite the small amount of ferrite (10%, in wt) in the core@shell systems. A high efficiency (96%) was obtained in the decolorization of methylene blue using the system CoMnFe<sub>2</sub>O<sub>4</sub>@ZrO<sub>2</sub>@TiO<sub>2</sub>, with 85% of TiO<sub>2</sub> and 5% of ZrO<sub>2</sub>, after 16 h of UVC irradiation with 3 low power lamps (9 W). This decolorization is much higher than results obtained without ZrO<sub>2</sub> as intermediate phase in CoMnFe<sub>2</sub>O<sub>4</sub>@TiO<sub>2</sub> photocatalyst (49%) and without TiO<sub>2</sub> as active phase in CoMnFe<sub>2</sub>O<sub>4</sub>@ZrO<sub>2</sub> (40%), for the same irradiation time.</div></div>","PeriodicalId":18233,"journal":{"name":"Materials Science and Engineering: B","volume":"327 ","pages":"Article 119241"},"PeriodicalIF":4.6,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146080930","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}