Materials Research Bulletin最新文献

{"title":"Improving laser performance at 1081 nm in Yb3+-doped tellurite glasses with low threshold","authors":"G. Lozano C․ ,&nbsp;J.F.M. dos Santos ,&nbsp;L.G. Merízio ,&nbsp;M. de Oliveira Jr. ,&nbsp;Y. Messaddeq ,&nbsp;E. Marega Jr. ,&nbsp;V.A.G. Rivera","doi":"10.1016/j.materresbull.2025.113458","DOIUrl":"10.1016/j.materresbull.2025.113458","url":null,"abstract":"<div><div>Yb³⁺-doped glass lasers have promising applications in optical telecommunications, industrial processing, due to their broad or short emission and gain bandwidth, as well as their cost-effective maintenance and compact design. This research reports the laser operation of Yb³⁺-doped tellurite glass emitting at 1081 nm and evaluates its performance under varying pump powers using a continuous-wave diode laser at 976 nm, with a bandwidth of 20 nm. Our findings reveal that the glasses do not exhibit the formation of Yb³⁺ clusters. The laser efficiency increased from 1.7 % to 5.5 % as the concentration of Yb³⁺ ions was raised to 0.9 mol %, although quenching of the emission intensity at higher concentrations. The laser threshold was determined at a pump power of 120 mW, with the glasses showing good thermal stability without damage. These glasses offer new opportunities for applications in optical telecommunications, particularly in Ytterbium-Erbium-doped fibre amplifier systems as a pumping source.</div></div>","PeriodicalId":18265,"journal":{"name":"Materials Research Bulletin","volume":"189 ","pages":"Article 113458"},"PeriodicalIF":5.3,"publicationDate":"2025-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143760218","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":"Constructing synergistic effects of ZnIn2S4_Sv/WO3 heterojunctions with boosted photocatalytic sterilization under visible light irradiation","authors":"Cheng-Yu Yu ,&nbsp;Yue-Sheng Lin ,&nbsp;Yi-Ta Wang ,&nbsp;Chaur-Jeng Wang","doi":"10.1016/j.materresbull.2025.113459","DOIUrl":"10.1016/j.materresbull.2025.113459","url":null,"abstract":"<div><div>In this study, the ZnIn₂S₄ photocatalyst was synthesized via a solvothermal method, wherein the concentration of the sulfur precursor was adjusted to incorporate sulfur vacancy structures (ZnIn₂S₄_S_v, ZnCl₂: 0.8 mmol, InCl₃:1.6 mmol, and TAA: 6.4 mmol). Subsequently, the WO₃ was coupled with ZnIn₂S₄_S_v to create a synergistic effect through defect engineering and heterojunction formation. The results indicated that coupling 0.500 mmol WO₃ with ZnIn₂S₄_S_v to form a ZnIn₂S₄_S_v/WO₃ heterojunction resulted in superior specific surface area and reduced charge transfer resistance. This configuration achieved a 99.77 % inactivation efficiency of <em>Escherichia coli</em> (<em>E.coli</em>) in 120 min, and the reaction rate was 2.37- and 7.80-fold higher than those of individual ZnIn₂S₄_S_v and WO₃, respectively. The XPS and ESR experiments confirmed the construction of an S-scheme heterojunction charge-transfer pathway between ZnIn₂S₄_S_v and WO₃, thereby retarding charge recombination and facilitating the generation of reactive oxygen species, which enhanced hydrogen peroxide production and bacterial inactivation performance.</div></div>","PeriodicalId":18265,"journal":{"name":"Materials Research Bulletin","volume":"189 ","pages":"Article 113459"},"PeriodicalIF":5.3,"publicationDate":"2025-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143785840","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":"Ag-NiFe₂O₄ over Mesoporous Silica for Efficient 4-Nitrophenol Reduction: Nanocatalyst Development, Kinetics Studies and Reaction Optimization","authors":"Nail Saleh Al Sailah ,&nbsp;Binitha N Narayanan","doi":"10.1016/j.materresbull.2025.113455","DOIUrl":"10.1016/j.materresbull.2025.113455","url":null,"abstract":"<div><div>An innovative magnetic ternary catalyst, silver-doped nickel ferrite integrated into the nanoreactor mesoporous silica (Ag-NiFe₂O₄/meso-SiO₂), has been synthesized, offering a promise in the catalytic transformation of 4-nitrophenol (4-NP) to 4-aminophenol (4-AP). This design synergistically combines the exceptional catalytic activity of ∼3 nm silver nanoparticles (AgNPs) with the structural advantages of ordered mesoporous silica (meso-SiO₂), effectively stabilizing the nanoparticles and preventing agglomeration. The incorporation of a magnetic NiFe₂O₄ not only enhances reusability but also facilitates efficient magnetic recovery, addressing key challenges in catalyst reusability. Comprehensive characterization using XRD, FTIR spectroscopy, UV-vis DRS spectroscopy, XPS, FESEM, HRTEM, and VSM analyses confirms the material's structural integrity, mesoporosity, and robust magnetic properties. BET-BJH suface area-porosity analysis reveals a 262.18 m²/g surface area for meso-SiO₂, with pore size in the range of 7.13 nm, which can accommodate both AgNPs (3 nm) and NiFe₂O₄ (∼15-18 nm) enabling reaction inside the channels and thereby meso-SiO₂ acting as a nanoreactor for conversion of 4-NP. Employing a Box-Behnken design under response surface methodology, the catalyst achieved optimal reduction conditions; i.e., 0.2 mmol/L 4-NP, 5.3 mg catalyst, 49.1 mg NaBH₄, and a reaction time of 12 minutes. The Ag-NiFe₂O₄/meso-SiO₂ system demonstrated first order kinetics with exceptional catalytic efficiency, operational stability over five repeated cycles, and rapid magnetic separation, showcasing its potential as a model platform for sustainable nanocatalysis. This study pioneers the integration of noble-metal nanoparticles with magnetic materials inside the mesoporous nanoreactors, setting new dimensions of advanced catalytic systems in green and efficient chemical processes.</div></div>","PeriodicalId":18265,"journal":{"name":"Materials Research Bulletin","volume":"189 ","pages":"Article 113455"},"PeriodicalIF":5.3,"publicationDate":"2025-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143767560","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":"Editorial advances in materials for energy storage and conversion","authors":"Fermin Cuevas ,&nbsp;Tayfur Öztürk","doi":"10.1016/j.materresbull.2025.113454","DOIUrl":"10.1016/j.materresbull.2025.113454","url":null,"abstract":"","PeriodicalId":18265,"journal":{"name":"Materials Research Bulletin","volume":"189 ","pages":"Article 113454"},"PeriodicalIF":5.3,"publicationDate":"2025-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143767559","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":"GeS2-Ga2S3 based glass ceramics containing doped with Er3+ CsPbBr3, CsPbI3 perovskite crystals: Effect of Er³⁺ Doping on Their Photoluminescent Properties","authors":"Inna A. Ivashchenko ,&nbsp;Volodymyr V. Halyan ,&nbsp;Lubomir D. Gulay ,&nbsp;Anatoliy Zelinskiy ,&nbsp;Filip Koper ,&nbsp;Alicja Szymska-Szymanik ,&nbsp;Paweł Dąbczyński ,&nbsp;Małgorzata Makowska-Janusik ,&nbsp;Katarzyna Matras-Postołek","doi":"10.1016/j.materresbull.2025.113442","DOIUrl":"10.1016/j.materresbull.2025.113442","url":null,"abstract":"<div><div>Glass-ceramics containing perovskite crystals CsPbX₃ (X = Br, I) doped with Er³⁺ were synthesized for the first time, using compositions of 80 mol.% GeS₂ − <strong>(5-y)</strong> mol.% Ga₂S₃ − 15 mol.% CsPbX₃ <strong>(y</strong> = 0–3 mol.% Er₂S₃). These materials exhibit photoluminescence (PL) with maxima at 530 nm (X = Br) and 688 nm (X = I), supported by perovskite crystals. In CsPbBr₃ glass-ceramics, PL intensity decreases with Er³⁺ doping due to a competing emission channel (660 nm) from Er³⁺ ions. Under 532 nm excitation, additional PL bands appear in the IR range at 805, 985, and 1540 nm. <strong>In the case of CsPbI₃ glass-ceramics, excitation with 980 nm light produces Antistokes (650 nm) and Stokes (1540 nm) emissions.</strong> Computational density functional theory (DFT) simulations provided insights into the structural and electronic properties of pristine and Er-doped CsPbX₃ crystals. <strong>The glass-ceramics remained stable, maintaining their PL properties for over a month.</strong></div></div>","PeriodicalId":18265,"journal":{"name":"Materials Research Bulletin","volume":"189 ","pages":"Article 113442"},"PeriodicalIF":5.3,"publicationDate":"2025-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143767558","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":"Tunable luminescence and structural modifications in Eu³⁺/Li⁺ Co-doped YBa₃(BO₃)₃ phosphors for LEDs","authors":"Dhowah A.E. Somaily ,&nbsp;Abeer S. Altowyan ,&nbsp;U.H. Kaynar ,&nbsp;H. Aydin ,&nbsp;Jabir Hakami ,&nbsp;M.B. Coban ,&nbsp;T. Zelai ,&nbsp;N. Can","doi":"10.1016/j.materresbull.2025.113453","DOIUrl":"10.1016/j.materresbull.2025.113453","url":null,"abstract":"<div><div>Eu³⁺-doped and Eu³⁺/Li⁺ co-doped YBa₃(BO₃)₃ (YBBO) phosphors were synthesized via a microwave-assisted sol-gel combustion method for warm white LED applications. Li⁺ co-doping improved crystallinity and luminescence efficiency. XRD with Rietveld refinement confirmed single-phase YBBO with lattice modifications due to doping. SEM-EDS analysis revealed improved particle densification and uniformity, while FTIR and Raman spectra confirmed alterations in the borate network. Photoluminescence studies showed a dominant red emission at 611 nm. The intensity corresponding to 0.05 mol Eu³⁺ doping was approximately 8.38-fold higher than that of the 0.005 mol Eu³⁺ sample, indicating enhanced luminescence efficiency before the onset of concentration quenching. The phosphor exhibited high color purity (88.3 %) based on CIE coordinates, making it suitable for color evaluation over CCT. Time-resolved PL measurements showed prolonged lifetimes and decreased non-radiative decay. These results demonstrate the potential of YBBO:Eu³⁺/Li⁺ as a highly efficient red-emitting phosphor for next-generation optoelectronic and solid-state lighting applications.</div></div>","PeriodicalId":18265,"journal":{"name":"Materials Research Bulletin","volume":"189 ","pages":"Article 113453"},"PeriodicalIF":5.3,"publicationDate":"2025-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143746944","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":"Wide Angle Stable Wideband Absorber based Solar Energy Harvester","authors":"Bhoomi,&nbsp;Vikram Maurya,&nbsp;Sarthak Singhal","doi":"10.1016/j.materresbull.2025.113452","DOIUrl":"10.1016/j.materresbull.2025.113452","url":null,"abstract":"<div><div>A wideband absorber-based solar energy harvester operating in infrared (IR), visible, and ultraviolet (UV) regions is investigated in this paper. The resonating structure comprises a rectangular notch-loaded trapezoidal-shaped metallic section arranged symmetrically along four corners. Its unit cell dimension is 90×90×10 nm³ and achieves more than 90% absorption (A) for the frequency range of 189.31 to 4308.958 THz. It is polarization-dependent but has A≥90% throughout the operating frequency band for Transverse Magnetic (TM) as well as Transverse Electric (TE) modes. This absorber has A≥90% for incident angle (θ)≤50^o and A≥80% for θ≤60^o in both of the TE and the TM modes. The designed absorber achieves 97.30% solar absorption efficiency (<span><math><msub><mrow><mi>η</mi></mrow><mi>A</mi></msub></math></span>) along with the thermal emission efficiency (<span><math><msub><mrow><mi>η</mi></mrow><mi>E</mi></msub></math></span>) of 81.45%, 92.55%, and 96.44% at 1000K, 2000K, and 3000K, respectively. A high Photo-Thermal Conversion Efficiency (PTCE) of 97.26% is observed at 100 K temperature with a solar concentration (C) of 100.</div></div>","PeriodicalId":18265,"journal":{"name":"Materials Research Bulletin","volume":"189 ","pages":"Article 113452"},"PeriodicalIF":5.3,"publicationDate":"2025-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143767557","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":"Corrigendum to “Host-sensitized phosphorescence of Mn4+, Pr3+,4+ and Nd3+ in MgAl2Si2O8” [Materials Research Bulletin, 47 (2012) 1138-1141]","authors":"Esra Çırçır ,&nbsp;Nilgun Ozpozan Kalaycioglu","doi":"10.1016/j.materresbull.2025.113429","DOIUrl":"10.1016/j.materresbull.2025.113429","url":null,"abstract":"","PeriodicalId":18265,"journal":{"name":"Materials Research Bulletin","volume":"189 ","pages":"Article 113429"},"PeriodicalIF":5.3,"publicationDate":"2025-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143704886","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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":"Spectroscopy of Yb3+ ions in multisite MgMoO4 crystal","authors":"Ghassen Zin Elabedine ,&nbsp;Yana S. Didenko ,&nbsp;Pavel Loiko ,&nbsp;Kirill A. Subbotin ,&nbsp;Anatolii I. Titov ,&nbsp;Liudmila D. Iskhakova ,&nbsp;Denis A. Lis ,&nbsp;Sergei K. Pavlov ,&nbsp;Yulia I. Zimina ,&nbsp;Kristina V. Kuleshova ,&nbsp;Rosa Maria Solé ,&nbsp;Magdalena Aguiló ,&nbsp;Francesc Díaz ,&nbsp;Patrice Camy ,&nbsp;Xavier Mateos","doi":"10.1016/j.materresbull.2025.113451","DOIUrl":"10.1016/j.materresbull.2025.113451","url":null,"abstract":"<div><div>Yb³⁺-doped magnesium monomolybdate crystal (Yb:MgMoO₄) is grown by the Czochralski method. The crystal structure, thermal expansion, vibronic properties, polarized room- and low-temperature spectroscopy of this new compound were studied. According to the Rietveld refinement, Yb:MgMoO₄ belongs to the monoclinic class (sp. gr. <em>C</em>2/<em>m</em>, lattice constants: <em>a</em> = 10.276(9)Å, <em>b</em> = 9.289(6)Å, <em>c</em> = 7.027(6)Å and <em>β</em> = 106.903(8)°). The highest-energy Raman mode of Yb:MgMoO₄ is found at 969 cm^-1 and assigned to symmetric stretching vibrations of [MoO₄]^2- tetrahedra. Yb³⁺ ions in MgMoO₄ exhibit intense and broad absorption at 978 nm, relatively broad and smooth emission bands above 1 μm (stimulated-emission cross-section: <em>σ</em>_SE = 0.76 × 10^–20 cm² at 1031 nm for light polarization <strong><em>E</em></strong> || <strong><em>c</em></strong>) and a long luminescence lifetime (0.63 ms). The low-temperature (12 K) spectroscopic studies evidenced a multi-site behavior for Yb³⁺ ions in MgMoO₄ revealing at least 8 non-equivalent optical centers which are assigned to different charge compensation mechanisms. This induces a strong inhomogeneous spectral line broadening. For envisioned laser applications, the problem of low Yb³⁺ segregation coefficient (<em>K</em>_Yb ∼0.029) needs to be solved.</div></div>","PeriodicalId":18265,"journal":{"name":"Materials Research Bulletin","volume":"189 ","pages":"Article 113451"},"PeriodicalIF":5.3,"publicationDate":"2025-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143777625","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":"Pre-Carbonization of B/N/O heteroatom-codoped hierarchical porous carbon spheres derived from bio-waste orange peel for high-performance supercapacitors","authors":"Madhan Vinu ,&nbsp;Samikannu Prabu ,&nbsp;Anita Virgin ,&nbsp;Kung-Yuh Chiang ,&nbsp;Bhavya Srivastava ,&nbsp;Ravi Ranjithkumar","doi":"10.1016/j.materresbull.2025.113441","DOIUrl":"10.1016/j.materresbull.2025.113441","url":null,"abstract":"<div><div>Here, boron, nitrogen, and oxygen heteroatoms-doped hierarchical porous carbon spheres (HPCS) have been produced by consuming scrap bio-waste orange peel as a natural carbon precursor in a low-cost production technique. The synthetic method provides a quick and environmentally friendly approach for fabricating B/N/O<img>HPCS by annealing carbon materials with boric acid followed by NaOH activation. Additionally, autoclave pre-carbonization promotes the polymerization of the precursors, leading to an increased carbon yield. The synthesis of B/N/O<img>HPCS products with a multi-scale pore structure can enhance specific capacitance activity because of the synergistic usage of heteroatoms, efficient mass transfer, and improved transport kinetics from linked 3D architecture. As a result, the B/N/O<img>HPCS-750 pre-carbonization material for the Supercapacitors (SC) exhibits a high specific capacitance of 436 F g^-1 at 0.5 A g^-1 in 1 M Na₂SO₄. Also, the B/N/O<img>HPCS-750-based symmetric SC demonstrates exceptionally high specific capacitance of 365 F g⁻1 at a current density of 0.5 Ag⁻1 and an impressive power density of 456.2 W kg⁻1 and an energy density of 28.6 Wh kg⁻1. Notably, the SC maintains outstanding capacitance retention of about 92 % even after 30,000 charge-discharge cycles at a high current density of 10 Ag⁻¹. This study displays the excellent performance of SCs fabricated with heteroatom-doped HPCS, synthesized via a salt-assisted method, offering an eco-friendly solution for converting bio-waste into valuable materials.</div></div>","PeriodicalId":18265,"journal":{"name":"Materials Research Bulletin","volume":"189 ","pages":"Article 113441"},"PeriodicalIF":5.3,"publicationDate":"2025-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143767574","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}