Materials Science and Engineering: B最新文献

{"title":"Comparative study between conventional and nanomaterial-based methods for selective recovery of selenium/tellurium from copper anode slime","authors":"Ambikesh Soni ,&nbsp;Suresh Sundaramurthy ,&nbsp;Anil Kumar Sharma","doi":"10.1016/j.mseb.2025.118424","DOIUrl":"10.1016/j.mseb.2025.118424","url":null,"abstract":"<div><div>The selective recovery of valuable elements from copper anode slime represents a crucial approach to recycling and sustainability. While conventional methods such as oxidative roasting, leaching, and electrolytic refining have been widely adopted, they present disadvantages including high energy consumption, low selectivity, and environmental concerns. Nanomaterials have emerged as promising alternatives, offering enhanced selectivity and efficiency due to their high surface area, tunable properties, and specific interactions with metal ions. This study compares conventional and nanomaterial-based methodologies regarding their efficiency, cost implications, and environmental impacts. Traditional multi-step processes often compromise the purity of recovered elements, whereas functionalized nanoparticles and nanocomposites with their unique nanoscale surface interactions significantly enhance recovery rates and selectivity. Furthermore, this review evaluates the upscaling potential of nanotechnologies, highlighting comparative benefits of traditional methods while emphasizing substantial advancements through research and development. The ongoing evolution of nanomaterial-based technologies underscores the necessity for continued research and innovation to refine applications for selenium and tellurium recovery, ultimately leading to more efficient processing of copper anode slime.</div></div>","PeriodicalId":18233,"journal":{"name":"Materials Science and Engineering: B","volume":"320 ","pages":"Article 118424"},"PeriodicalIF":3.9,"publicationDate":"2025-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144070813","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":"Enhanced UV protection and photocatalytic activity in Samarium and Europium co-doped TiO2 thin films: A durable solution for protective coatings","authors":"Ayesha Bhandari ,&nbsp;Ashish Kumar ,&nbsp;Kamni ,&nbsp;Manvi Rajput ,&nbsp;H.C. Swart ,&nbsp;Vinay Kumar","doi":"10.1016/j.mseb.2025.118429","DOIUrl":"10.1016/j.mseb.2025.118429","url":null,"abstract":"<div><div>This study explores Samarium (Sm³⁺)-doped and Europium-Samarium (Eu³⁺: Sm³⁺, 1:1) co-doped TiO₂ thin films for their potential as UV protective coatings. Thin films were fabricated via spin coating using sol–gel-derived powders dispersed in a PVA matrix, enabling uniform deposition on glass substrates. Powder X-ray diffraction (PXRD) analysis revealed that single-doped TiO₂ stabilized the anatase phase, while co-doping introduced some rutile content. With increasing doping concentration, the crystallite size decreased, remaining below 40 nm, which is advantageous for enhancing surface properties. Fourier-transform infrared (FTIR) spectroscopy confirmed the presence of characteristic Ti-O bond stretching vibrations at 430 cm⁻¹, consistent with the anatase phase of TiO₂ in all samples. UV–VIS spectroscopy showed strong light absorption below 400 nm and an indirect bandgap of about 3.74 eV, which means it can effectively absorb UV light. Excitation spectra showed a prominent absorption band in the 200–300 nm range, corresponding to intrinsic TiO₂ transitions (O²⁻→Ti⁴⁺). Emission spectra of Sm³⁺-doped TiO₂ exhibited peaks excited at 475 nm, attributed to ⁴G_5/2 → ⁶H_j (J = 5/2, 7/2, 9/2 and 11/2) transitions, while co-doped samples displayed maximum red emission at 612 nm, confirming the presence of both Sm³⁺ and Eu³⁺ ions. The films demonstrated superior UVB (280–320 nm) blocking efficiency (87 %) compared to UVB (320–400 nm) (34 %), as evidenced by transmission spectra. The photocatalytic performance evaluated via methylene blue (MB) dye degradation under UV irradiation indicated an inverse correlation between dye degradation and UV shielding. Durability tests measured under prolonged showed a slight increase (30–40 %) in transmittance within the 200–300 nm range but maintained stability at higher wavelengths. These findings support the efficiency of co-doped and doped TiO₂ thin layers to act as long-term, high-quality ultraviolet-blocking materials and are good applicants to be applied in protective coatings in various industries.</div></div>","PeriodicalId":18233,"journal":{"name":"Materials Science and Engineering: B","volume":"320 ","pages":"Article 118429"},"PeriodicalIF":3.9,"publicationDate":"2025-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144068409","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":"Neodymium-doped Co3O4 nanoparticles prepared via PVP-assisted Sol-gel method for improved visible-light photocatalytic activity","authors":"A.B. Vennela ,&nbsp;N. Senthilkumar ,&nbsp;K.V. Hemalatha","doi":"10.1016/j.mseb.2025.118386","DOIUrl":"10.1016/j.mseb.2025.118386","url":null,"abstract":"<div><div>Neodymium (Nd)-doped cobalt oxide nanoparticles were synthesized using the poly-assisted sol–gel method for photocatalytic activity. The phase purity and crystalline nature of the synthesized material were primarily confirmed through PXRD analysis. The optical UV–Visible spectroscopy provides linear decrease in band gap energy due to successful incorporation of Nd³⁺ ions into the Co₃O₄ lattice position. The recombination of electrons and holes are reduced by increasing the Nd³⁺ into Co₃O₄ as confirmed by PL spectroscopy. The spherical shaped morphology was noticed from the FESEM and TEM analysis. The average particle size of the Nd-doped Co₃O₄ nanoparticles were determined at the range of 10 to 150 nm. EDAX analysis reveals that the presence of Co, O and Nd demonstrating that neodymium ions are successfully doped into the Co₃O₄ NPs without impurities. The NdCo₃O₄-1 nanoparticles exhibited superior photodegradation performance of MB and RhB dyes under visible light irradiation compared to other catalysts. This enhanced activity can be attributed to the increased Nd doping concentration, which plays a crucial role in trapping charge carriers and preventing electron-hole pair recombination.</div></div>","PeriodicalId":18233,"journal":{"name":"Materials Science and Engineering: B","volume":"320 ","pages":"Article 118386"},"PeriodicalIF":3.9,"publicationDate":"2025-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144068408","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":"Structural, optical and electrical properties of ZnO thin films deposited in the plane direction (002) by ultrasonic spray pyrolysis using nitrogen as carrier gas","authors":"E. Rincon-Suarez ,&nbsp;J.M. Mozo ,&nbsp;Anabel Romero-López ,&nbsp;S. Alcántara-Iniesta ,&nbsp;Francisco J. Flores-Ruiz ,&nbsp;L.E. Serrano","doi":"10.1016/j.mseb.2025.118430","DOIUrl":"10.1016/j.mseb.2025.118430","url":null,"abstract":"<div><div>Zinc oxide (ZnO) holds promise for diverse applications, particularly when deposited along the (002) crystalline plane, enhancing conductivity and transparency. This study examines the optical, electrical, structural, and morphological properties of ZnO films. Nitrogen and air as carrier gas to promoted (002) orientation, confirmed by X-ray diffraction (XRD), with an average crystallite size of 19 nm. The films exhibited high transmittance (&gt;80 %), a band gap of ∼ 3.17 eV, and grain sizes of ∼ 60 nm observed via scanning electron microscopy (SEM). Resistivity was 0.54 Ω cm, and energy dispersive spectroscopy (EDS) showed an atomic composition of ∼ 53 % oxygen and 47 % zinc.</div></div>","PeriodicalId":18233,"journal":{"name":"Materials Science and Engineering: B","volume":"320 ","pages":"Article 118430"},"PeriodicalIF":3.9,"publicationDate":"2025-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144070811","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":"Pore structure design of activated carbon microspheres by molten salt-assisted strategy for high energy density supercapacitors","authors":"Huan Xiangli,&nbsp;Baishan Liu,&nbsp;Yanli Wang,&nbsp;Liang Cheng,&nbsp;Liang Zhan,&nbsp;Yongzheng Zhang","doi":"10.1016/j.mseb.2025.118412","DOIUrl":"10.1016/j.mseb.2025.118412","url":null,"abstract":"<div><div>Porous carbon is one of the preferred electrode materials for supercapacitors. Herein, hierarchically porous activated carbon microspheres (PACSs) are prepared by molten salt-assisted carbonization and CO₂ activation. In this strategy, the molten NaCl acts as a supplier of high energy Cl^-, which is responsible for etching the skeleton of the carbon material and creating more defects for subsequent CO₂ activation to construct a hierarchically porous structure in the activated carbon spheres, providing a large specific surface area (2087 m² g⁻¹) and high porosity (77.8% mesoporosity). When assembled into symmetric supercapacitor, the PACSs electrode exhibited a specific capacitance of 123 F g⁻¹ at 0.1 A g⁻¹ in organic electrolyte. Moreover, the device can display excellent cycling performance with a capacitance retention of 93.1% after 10,000 cycles and a high energy density of 25.66 Wh kg⁻¹ (at 61.17 W kg⁻¹). This study pioneers a new strategy for constructing hierarchically porous structure in carbon materials for energy storage devices.</div></div>","PeriodicalId":18233,"journal":{"name":"Materials Science and Engineering: B","volume":"320 ","pages":"Article 118412"},"PeriodicalIF":3.9,"publicationDate":"2025-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144070812","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":"A New Approach for Mitigating the effects of temperature and ITCs in GAA TFETs with a vertical tunneling design","authors":"Bokka Jagadeesh Babu ,&nbsp;Bhaskara Venkata Jagannadham Doddi","doi":"10.1016/j.mseb.2025.118427","DOIUrl":"10.1016/j.mseb.2025.118427","url":null,"abstract":"<div><div>This work proposes an innovative vertical tunneling GAA-VTFET design that enhances analog/AC performance by addressing interface trap effects and temperature variations. Integrating a heavily doped n + source pocket with GaP/Si heterojunction, the device achieves improved BTBT (band-to-band tunneling) efficiency, resulting in higher on-current and a reduced subthreshold slope (SS). The fully source surrounding gate structure enables line tunneling, providing enhanced gate control, while a gate-drain underlap and vertical configuration effectively suppress ambipolar and leakage currents, yielding a high on–off current ratio and compact footprint. DC analysis reveals optimal threshold voltage, high on–off ratio, and low SS, while AC performance metrics, including favourable transconductance, cutoff frequency, and gain-bandwidth product, underscore its suitability for RF and high-performance analog applications.</div></div>","PeriodicalId":18233,"journal":{"name":"Materials Science and Engineering: B","volume":"320 ","pages":"Article 118427"},"PeriodicalIF":3.9,"publicationDate":"2025-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143948827","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":"Assessing pseudocapacitive and OER-HER electrocatalytic potential of bimetallic Copper-Nickel/Graphene oxide nanocomposite","authors":"Kedar Sahoo ,&nbsp;Deepak Kumar ,&nbsp;Vishal K. Kushwaha ,&nbsp;Ajinkya Kotkar ,&nbsp;Arindam Indra ,&nbsp;Shirish H. Sonawane ,&nbsp;Suddhasatwa Basu","doi":"10.1016/j.mseb.2025.118425","DOIUrl":"10.1016/j.mseb.2025.118425","url":null,"abstract":"<div><div>Copper-nickel oxide/GO (CNO/GO) nanocomposite was synthesized via a low-temperature thermal reduction technique with crystallographic phase matching with an off-stoichiometric type Cu_0.05Ni_0.95O/GO structure. Three-electrode-based electrochemical experiments suggest that the prepared CNO/GO nanocomposite can store energy via the pseudocapacitive mechanism. The charge storage efficacy is also reflected in the high-power density value (∼267 W/kg) achieved at a current density of 1 A/g compared to earlier reported nickel oxide-based composites. The practical performance of the CNO/GO nanocomposite can be corroborated by the fact that in a symmetric coin cell device, it results in a specific capacity of ∼37F/g @ 1A/g and retains its ∼84 % specific capacity after 8000 cycles. The flexibility of using CNO/GO nanocomposite as an exceptional electrocatalytic material can be recognized from the smaller overpotential (η) values, e.g., 340 mV and 359 mV for OER and HER, respectively, in conjunction with chronoamperometric stability retained over 24 h. All these multiple electrochemical attributes establish the potential of using CNO/GO nanocomposite in energy storage and conversion.</div></div>","PeriodicalId":18233,"journal":{"name":"Materials Science and Engineering: B","volume":"320 ","pages":"Article 118425"},"PeriodicalIF":3.9,"publicationDate":"2025-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144068406","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":"Low-cost synthesis of sulfur doped apricot shell activated carbon material with hierarchical porous structure for flexible supercapacitor","authors":"Hongbo Xu ,&nbsp;Shenghai Zhou ,&nbsp;Na Liang ,&nbsp;Jiahui Zang ,&nbsp;Junyan Wang","doi":"10.1016/j.mseb.2025.118428","DOIUrl":"10.1016/j.mseb.2025.118428","url":null,"abstract":"<div><div>It is significant to convert biomass waste into economical and high-performance supercapacitor materials. Herein, a series of sulfur-doped apricot<!--> <!-->shell<!--> <!-->activated carbons (S-ASAC) were economically synthesized via a readily scalable method with apricot<!--> <!-->shell<!--> <!-->wastes and MgSO₄ as carbon and sulfur sources, respectively. The obtained S-ASAC material exhibits appropriate sulfur modification and a controllable hierarchical pore structure. The optimal S-ASAC-1.5 electrode material shows a large specific capacitance of 304.6F g⁻¹, high cycle stability with 98.5 % capacitance retention after 10,000 cycles at 10 A g⁻¹ and good rate performance with capacitance retention of 72.2 % at 0.1–20 A g⁻¹, originating from the pseudocapacitance increased by sulfur species and hierarchical pore structure. The S-ASAC-1.5 was further used to construct a flexible supercapacitor with energy density of 34.62 µWh cm⁻² at a power density of 124.5 µW cm⁻², which is superior to that obtained for Mn doped NiCo₂O₄, Ni/MnO₂ supercapacitor, etc.</div></div>","PeriodicalId":18233,"journal":{"name":"Materials Science and Engineering: B","volume":"320 ","pages":"Article 118428"},"PeriodicalIF":3.9,"publicationDate":"2025-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144068407","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":"Self-reducing CaFe1-xCuxO3-δ perovskite for photocatalysis: The synergistic role of Cu doping and O–H groups","authors":"Chouaib Ghaoues ,&nbsp;Melia Hamici ,&nbsp;Khelifa Haddadi ,&nbsp;Houda Far ,&nbsp;Khadoudj Guessoum","doi":"10.1016/j.mseb.2025.118400","DOIUrl":"10.1016/j.mseb.2025.118400","url":null,"abstract":"<div><div>Pure and Cu-doped (1 wt%, 4 wt%, and 10 wt%) CaFeO_3-δ perovskite nanopowders were synthesized via a citric acid-assisted sol–gel method. In order to ensure the preservation of hydroxyl (O–H) groups, the precursors were hermetically sealed with semipermeable Parafilm during synthesis and drying. Subsequent calcination at 900 °C for 6 h yielded a well-crystallized, predominantly orthorhombic CaFeO_3-δ phase, along with minor residual Fe_2−δH_δO₃ and Ca(OH)₂ phases rich in hydroxyl groups. The synthesized materials exhibited exceptional photocatalytic activity for methylene blue (MB) degradation under visible-light irradiation. This enhanced performance is attributed to the synergistic interplay between copper doping and the hydroxyl network, which acts as an electrolyte-like medium to facilitate charge transport. It is noteworthy that 1 wt% Cu-doping demonstrated optimal efficiency, achieving 91.21 % MB degradation within 80 min. The charge carriers generated by Cu doping, coupled with efficient charge separation enabled by the hydroxyl electrolyte, are responsible for the remarkable catalytic activity. Notably, the Cu-doped CaFeO_3-δ perovskite functions as a self-sustaining catalyst, utilizing its intrinsic hydroxyl network to degrade MB with high efficiency and stability.</div></div>","PeriodicalId":18233,"journal":{"name":"Materials Science and Engineering: B","volume":"320 ","pages":"Article 118400"},"PeriodicalIF":3.9,"publicationDate":"2025-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143942644","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":"Effect of Sol aging on the structural and optical properties of tin dioxide (SnO2) nanoparticles and thin films","authors":"Vahdat Rafee ,&nbsp;Alireza Razeghizadeh ,&nbsp;Iraj Kazeminezhad ,&nbsp;Leyla Zalaghi","doi":"10.1016/j.mseb.2025.118395","DOIUrl":"10.1016/j.mseb.2025.118395","url":null,"abstract":"<div><div>This study investigated the effect of sol aging on the structural and optical properties of tin dioxide (SnO₂) nanoparticles and thin films prepared via the sol–gel method. For this purpose, a 0.1 M sol of SnO₂ nanoparticles was aged for 1, 8, 15, and 22 days. Subsequently, thin films were fabricated using the dip-coating technique. The structure and morphology of the nanoparticles and thin films were analyzed using X-ray diffraction (XRD) and scanning electron microscopy (SEM), respectively. XRD results revealed that the nanocrystals exhibited a tetragonal structure. Additionally, calculations indicated that the average nanocrystal size in both nanoparticles and thin films increased with longer sol aging times. SEM analysis confirmed the XRD findings, showing that prolonged aging resulted in larger nanocrystals, reduced particle boundaries in thin-film samples. Energy-dispersive X-ray spectroscopy (EDAX) confirmed the presence of tin and oxygen elements. Furthermore, Fourier transform infrared spectroscopy (FTIR) verified the expected chemical bonds. UV–Vis absorption spectra demonstrated that, in nanoparticle samples, increased aging time led to higher absorption and a reduced optical band gap. Such that, for the nanoparticle samples, the optical band gap decreased from 4.05 eV to 3.95 eV, and for the thin-film samples, it decreased from 4.48 eV to 4.30 eV. Also, in thin-film samples, prolonged aging resulted in decreased transmittance, increased reflectance, and a reduced optical band gap. These results demonstrate that sol aging can significantly impact the optical and structural properties of SnO₂ materials, which could be crucial in applications such as gas sensors, solar cells, and optoelectronic devices. A better understanding of the sol aging process could also contribute to optimizing synthesis methods and improving the performance of these materials in industrial applications.</div></div>","PeriodicalId":18233,"journal":{"name":"Materials Science and Engineering: B","volume":"320 ","pages":"Article 118395"},"PeriodicalIF":3.9,"publicationDate":"2025-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143942643","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}