Materials Research Bulletin最新文献

{"title":"Surface morphology and underlying mechanisms of HVLP copper foils with different additives","authors":"Yixin Luo ,&nbsp;Xiangli Qin ,&nbsp;Fangxin Wang ,&nbsp;Jian Huang ,&nbsp;Zhiying Wang ,&nbsp;Shanzheng Wen ,&nbsp;Zhen Sun ,&nbsp;Chun Yang ,&nbsp;Xixi Wang ,&nbsp;Xiaowei Fan ,&nbsp;Ning Song ,&nbsp;Yuhui Tan ,&nbsp;Yunzhi Tang","doi":"10.1016/j.materresbull.2025.113723","DOIUrl":"10.1016/j.materresbull.2025.113723","url":null,"abstract":"<div><div>Hyper Very Low Profile (HVLP) copper foil has found extensive applications in high-speed and high-frequency circuit boards. The primary challenge lies in the additives, which are required to strike a balance between the mutually restrictive relationship of the low roughness and high peel strength of copper foil, ensuring low signal loss and high transmission stability. This research explores the impacts of 2,3-dimercapto-1-propanesulfonate (DMPS) and collagen concentrations on the surface morphology, roughness, and peel strength of HVLP copper foil. The findings reveal that both additives refine the grain structures and augment the peel strength: at a concentration of 10 mg/L, collagen reduces surface roughness to 0.91 μm and increases peel strength to 0.64 N/mm, while DMPS at 15 mg/L results in a roughness of 0.9 μm and a peel strength of 0.55 N/mm. When investigating the mechanism and nucleation behavior of DMSP and collagen during the electroplating-roughening process, it was found that DMSP promotes copper deposition by virtue of its thiol and sulfonate groups, while collagen inhibits copper deposition by its amino group (-NH₂). Significantly, neither additive modifies the three-dimensional instantaneous nucleation characteristics of copper ions during the roughening process. By establishing correlations among density-functional theory (DFT) calculations, UV–Vis absorption spectroscopy, and electrochemical testing, the adsorption-desorption behaviors of additives on the copper foil surface are investigated. The findings disclose that DMPS establishes robust covalent bonds with copper, allowing for extended adsorption and efficient grain refinement even at elevated concentrations. Conversely, collagen demonstrates relatively weak adsorption as a result of electrostatic interactions, restricting its grain-refining capacity to lower concentrations.</div></div>","PeriodicalId":18265,"journal":{"name":"Materials Research Bulletin","volume":"194 ","pages":"Article 113723"},"PeriodicalIF":5.7,"publicationDate":"2025-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144867009","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":"Harnessing machine learning to revolutionize perovskite solar cells: Optimizing RbTmCl3-based photovoltaic performance","authors":"Abderrahim Yousfi ,&nbsp;Okba Saidani ,&nbsp;Raouf Zerrougui ,&nbsp;Tarek Assassi ,&nbsp;Sagar Bhattarai ,&nbsp;Md. Ferdous Rahman ,&nbsp;Girija Shankar Sahoo","doi":"10.1016/j.materresbull.2025.113731","DOIUrl":"10.1016/j.materresbull.2025.113731","url":null,"abstract":"<div><div>This study investigates the performance optimization of RbTmCl₃-based perovskite solar cells (PSCs) by combining machine learning (ML) models with the SCAPS-1D simulator. A comprehensive dataset was created by analyzing the effects of key parameters, including variations in the electron transport layer (ETL), hole transport layer (HTL), absorber thickness, as well as the presence of defects, doping, and impurities in the CsTmCl₃ absorber. Additional factors were examined, such as interface defects at the WS₂/ RbTmCl₃ and RbTmCl₃/CBTS junctions, temperature fluctuations, and resistance effects (series and shunt). Among eight ML models, the artificial neural network (ANN) outperformed the others, achieving a power conversion efficiency (PCE) with a determination coefficient (R²) of 0.86 and maintaining error fluctuations within a narrow range (±0.4 V). Key performance-determining parameters were identified using Pearson correlation and Shapley Additive Explanations (SHAP). SCAPS-1D simulations, guided by ANN-optimized inputs, yielded an optimal device architecture consisting of a 100 nm WS₂ ETL, an 800 nm RbTmCl₃ absorber, and a 500 nm CBTS HTL, resulting in a PCE of 28.21 %. The results highlight the efficacy of integrating ML with traditional simulation tools to accelerate PSC design and optimization. The findings also offer a solid basis for experimental validation and represent a significant step toward scalable, high-efficiency photovoltaic technologies.</div></div>","PeriodicalId":18265,"journal":{"name":"Materials Research Bulletin","volume":"194 ","pages":"Article 113731"},"PeriodicalIF":5.7,"publicationDate":"2025-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144887367","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 two−step approach to form KMgF3 on AZ31 magnesium alloy: growth and protectiveness mechanism","authors":"Li-Ping Wu","doi":"10.1016/j.materresbull.2025.113727","DOIUrl":"10.1016/j.materresbull.2025.113727","url":null,"abstract":"<div><div>A KMgF₃ film was fabricated on AZ31 Mg alloy using a two−step approach−first forming a MgF₂ film by immersion in 0.1 mol·dm^-3 NH₄F solution with pH 7, and then growing KMgF₃ by soaking in 1 mol·dm^-3 KF solution with pH 7. The growth of KMgF₃ was investigated by analyzing its morphological, structural and compositional evolution. The corrosion resistance of the MgF₂ and KMgF₃ coated AZ31 Mg alloy was compared in 3.5 % NaCl solution with pH 7. The results showed that KMgF₃ grew in an ingrowth mode through KF diffusion into MgF₂ film. The formation of KMgF₃ blocked the diffusion of KF, inducing a decrease in the content and the formation rate of KMgF₃ with immersion time. KMgF₃ respectively reduced corrosion current density of AZ31 Mg alloy and the MgF₂ film coated AZ31 Mg alloy by 20 times and 18 times, due to chemical stability of KMgF₃ in NaCl solution.</div></div>","PeriodicalId":18265,"journal":{"name":"Materials Research Bulletin","volume":"194 ","pages":"Article 113727"},"PeriodicalIF":5.7,"publicationDate":"2025-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144867010","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":"Solvent assisted regulation of the properties of Sanguisorba officinalis L. derived carbon dots: Application in antioxidant, fluorescence imaging and fluorescence detection","authors":"Yue Lan ,&nbsp;Xiaogang Zhou ,&nbsp;Ruting Zheng ,&nbsp;Jianyue Li ,&nbsp;Min Wang ,&nbsp;Dandan Wang ,&nbsp;Shiying Li ,&nbsp;Yuqiang Xiao ,&nbsp;Jiaqi Hu ,&nbsp;Meiling Yang ,&nbsp;Lingling Li ,&nbsp;Mingyue Wang ,&nbsp;Jianming Wu ,&nbsp;Die Gao","doi":"10.1016/j.materresbull.2025.113730","DOIUrl":"10.1016/j.materresbull.2025.113730","url":null,"abstract":"<div><div>Novel carbon dots (CDs-1) were synthesized using <em>Sanguisorba officinalis</em> L., as a precursor and a deep eutectic solvent (DES) as both solvent and dopant. For comparison, CDs-2 were prepared under identical conditions but using water as solvent. Chemical analyses reveal that two CDs possess well-defined crystalline structures and are rich in diverse functional groups. Notably, DES-mediated synthesis endows CDs-1 with advantageous features compared to CDs-2, including higher N and Cl contents, enhanced hydrophilicity, and superior optical properties. To evaluate their potential biomedical applications, antioxidant capacities of them were investigated through in vitro and in vivo assays. Results demonstrated that both CDs exhibit potent free radical scavenging activity, strong KMnO₄ reduction capability, and notable anti-cellular oxidative damage effects. Importantly, CDs-1 show superior performance in enhancing oxidative stress resistance at nematode level. Furthermore, owing to the exceptional optical characteristics, CDs-1 hold great promise for bioimaging applications and sensitive detection of 2,4,6-trinitrophenol (TNP).</div></div>","PeriodicalId":18265,"journal":{"name":"Materials Research Bulletin","volume":"194 ","pages":"Article 113730"},"PeriodicalIF":5.7,"publicationDate":"2025-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144889850","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":"Optimizing luminescence in solution-processable 2D perovskite nanoplatelets: The role of Mn2+ doping and layer thickness","authors":"Mingliang Wei ,&nbsp;Hao Zhang ,&nbsp;Mingyan Chen ,&nbsp;Hui Fu ,&nbsp;Weiyou Yang ,&nbsp;Jinju Zheng ,&nbsp;Jialong Zhao","doi":"10.1016/j.materresbull.2025.113726","DOIUrl":"10.1016/j.materresbull.2025.113726","url":null,"abstract":"<div><div>In this study, ligand-assisted supersaturated recrystallization was employed to synthesize OAm₂(CsPbBr₃)_n-1PbBr₄ Two-dimensional (2D) perovskite nanoplatelets (NPLs) with controlled layer thickness (<em>n</em> = 1, 2, 3, and 4), and effective Mn²⁺ doping was achieved through MnBr₂ post-treatment. The Mn²⁺-doped NPLs (<em>n</em> = 2) show a significant enhancement in photoluminescence quantum yield (PLQY) from 1.85 % (undoped) to 33.7 %. Photoluminescence (PL) lifetime analysis revealed a synergistic mechanism involving defect passivation and exciton-Mn²⁺ energy transfer. Investigations into the layer-thickness-dependent optical properties revealed that as the n-value increases, the relative intensity ratio of Mn²⁺ to excitonic luminescence (I_Mn/I_ex) decreased and the Mn²⁺ PL lifetime shortened. Temperature-dependent PL analysis revealed an anomalous temperature dependence of Mn²⁺ luminescence in the range of 80–260 K, characterized by thermal enhancement and a single-exponential decay trend with significantly shortened lifetime. Finally, the luminescence regulation mechanisms of layer thickness and Mn²⁺ doping in 2D perovskite NPLs were elucidated.</div></div>","PeriodicalId":18265,"journal":{"name":"Materials Research Bulletin","volume":"194 ","pages":"Article 113726"},"PeriodicalIF":5.7,"publicationDate":"2025-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144867005","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":"Optical properties and radiation shielding performance of BaO-content modified CaO-ZnO-Gd2O3-B2O3 glasses","authors":"Manjunatha ,&nbsp;M.I. Sayyed ,&nbsp;Shrikant Biradar ,&nbsp;A.S. Bennal","doi":"10.1016/j.materresbull.2025.113729","DOIUrl":"10.1016/j.materresbull.2025.113729","url":null,"abstract":"<div><div>This work presents the fabrication and comprehensive characterisation of novel glasses of composition:(80-x)B₂O₃–8CaO-11ZnO-xBaO-1Gd₂O₃ (<em>x</em> = 20, 24, 28 and 32) via the melt-quenching technique. XRD and FTIR analyses confirmed their amorphous structure and vibrational modes of the glasses. Optically, the direct band gap drops from 3.173 to 3.006 eV, while Urbach energy increases from 0.268 to 0.357 eV, reflecting enhanced disorder and electronic polarizability. Mechanically, both dissociation energy (74.043 to 68.847 kJ/cm³) and Young’s modulus (111.051 to 96.692 GPa) indicate reduced structural cohesion due to weaker Ba-O bonds. Furthermore, experimental shielding capabilities were investigated using a NaI(Tl) detector and radioactive gamma sources. Mass and linear attenuation coefficients, effective atomic number, mean free path, half-and tenth-value layers were determined using Phy-X/PSD and XCOM. The results reveal significant enhancements in physical, mechanical, optical tunability and radiation attenuation efficiency with increasing BaO composition, highlighting the potential of these glasses in photonic and radiation protection applications.</div></div>","PeriodicalId":18265,"journal":{"name":"Materials Research Bulletin","volume":"194 ","pages":"Article 113729"},"PeriodicalIF":5.7,"publicationDate":"2025-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144912637","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":"High-temperature supercapacitive performance of NiCo₂O₄ nanosheets: Effect of calcination and device operating temperature","authors":"Muzahir Iqbal ,&nbsp;Nilesh G Saykar ,&nbsp;Santosh K. Mahapatra ,&nbsp;Vijay Kumar ,&nbsp;Anil Arya","doi":"10.1016/j.materresbull.2025.113724","DOIUrl":"10.1016/j.materresbull.2025.113724","url":null,"abstract":"<div><div>Reliable energy storage and on-demand energy delivery are crucial during times of scarcity. Aqueous electrolytes are widely used in energy storage devices, but their performance is influenced by ambient temperature, especially in regions with significant temperature fluctuations. This study reports synthesis of NiCo₂O₄ (NCO) nanosheets through a solvothermal method, followed by calcination at different temperatures (300 °C, 400 °C, and 500 °C). A symmetric supercapacitor cell is fabricated and tested with 3 M Potassium hydroxide (KOH) electrolyte within an elevated temperature range [40 °C-80 °C], using cyclic voltammetry (CV), galvanostatic charge-discharge (GCD), and impedance spectroscopy (EIS). Structural analysis confirms the formation of NCO-nanosheets with specific surface area of 110 m²/g, and X-ray Photoelectron Spectroscopy (XPS) analysis verifies the oxidation states. The NCO 300 sample exhibits the highest specific capacitance of ∼531 F/g at 10 mV/s and ∼244 F/g at 2 A/g. Impedance analysis reveals low bulk/charge transfer resistance, along with reduced activation energy, as confirmed by Arrhenius plot. NCO300 achieves a peak energy density of 33.87 Wh/kg at a power density of 842.07 W/kg. Capacitance increases with temperature across all samples, demonstrating excellent thermal stability of device. Practical application is confirmed by successfully illuminating a red light-emitting diode (LED), highlighting the potential of NCO-based supercapacitors for real-world high temperature energy storage solutions.</div></div>","PeriodicalId":18265,"journal":{"name":"Materials Research Bulletin","volume":"194 ","pages":"Article 113724"},"PeriodicalIF":5.7,"publicationDate":"2025-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144893162","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":"Construction of magnetically recoverable palladium deposited polymer brush catalyst for reduction of organic pollutants","authors":"Cenap Yavuz ,&nbsp;Necdet Karakoyun","doi":"10.1016/j.materresbull.2025.113722","DOIUrl":"10.1016/j.materresbull.2025.113722","url":null,"abstract":"<div><div>Water contamination by nitroaromatic compounds and synthetic dyes poses serious environmental and health hazards, requiring the development of efficient, recyclable, and eco-friendly catalytic systems. In this study, a magnetically recyclable Pd–PAAm@Fe₃O₄ nanocatalyst was synthesized via surface grafting and reduction techniques, ensuring uniform dispersion of Pd⁰ nanoparticles on polyacrylamide-modified Fe₃O₄ without toxic reducing agents. The catalyst exhibited excellent activity for reducing 2-NP, 4-NP, 2,4-dinitrophenol, 2-NA, 4-NA, and 2,4-dinitroaniline, following pseudo-first-order kinetics, with the highest kₐₚₚ value of 5.23 min⁻¹. It also showed rapid degradation of organic dyes, achieving complete decolorization of methyl orange in 45 s and methylene blue in 120 s. The catalyst retained over 99 % efficiency for 4-NP reduction over five cycles, with low Pd leaching (0.10–0.16 %) and stable structure confirmed by XRD, SEM, TEM, and XPS, highlighting its potential for sustainable environmental remediation.</div></div>","PeriodicalId":18265,"journal":{"name":"Materials Research Bulletin","volume":"194 ","pages":"Article 113722"},"PeriodicalIF":5.7,"publicationDate":"2025-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144878491","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 BiOBr-NiCo2S4 composite with broadened potential window in alkaline electrolytes for supercapacitors","authors":"Lingjuan Deng,&nbsp;Lijuan Wei,&nbsp;Yihong Gao,&nbsp;Caihua Zhou,&nbsp;Zhanying Ma,&nbsp;Yingru Hu,&nbsp;Guang Fan","doi":"10.1016/j.materresbull.2025.113721","DOIUrl":"10.1016/j.materresbull.2025.113721","url":null,"abstract":"<div><div>The development of composite materials with extensive potential range is pivotal for the advancement of supercapacitors with elevated specific energy. In this work, BiOBr-NiCo₂S₄ composite was synthesized and supplied a prominent specific capacity of 1280 C g^-1 across a potential window of -1.2 ∼ 0.4 V vs. SCE. A symmetrical liquid capacitor of BiOBr-NiCo₂S₄//BiOBr-NiCo₂S₄ with a voltage of 1.4 V is assembled, which can deliver an impressive specific energy of 40.25 Wh kg^-1 at a specific power of 0.7 kW kg^-1 . From the perspectives of energy band and density of electronic states, the density functional theory (DFT) is employed to discuss the outstanding capacitance performance of BiOBr-NiCo₂S₄. It is presumed that an synergistic effect generated within the BiOBr-NiCo₂S₄ composite, thereby endowing the BiOBr-NiCo₂S₄ composite with outstanding rate performance. This research provides valuable insights for design the electrode materials that possess high specific capacity and broad potential range.</div></div>","PeriodicalId":18265,"journal":{"name":"Materials Research Bulletin","volume":"194 ","pages":"Article 113721"},"PeriodicalIF":5.7,"publicationDate":"2025-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144852730","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 novel Zn-based MOF for efficiently degrading tetracycline under visible light","authors":"Zhexiao Zhu,&nbsp;Jingyi Qu,&nbsp;Jiahui Lin,&nbsp;Xiaolu Xu,&nbsp;Yangben Chen,&nbsp;Kailin Xie,&nbsp;Hui Zheng","doi":"10.1016/j.materresbull.2025.113719","DOIUrl":"10.1016/j.materresbull.2025.113719","url":null,"abstract":"<div><div>To solve the increasingly serious problem of antibiotic contamination, zinc-based MOF photocatalysts with unique structures were synthesized by a one-step hydrothermal method. The visible-light-driven photocatalytic degradation efficiency of tetracycline (TC) in aqueous solution was systematically evaluated. The characteristics of photocatalysts were analyzed by various characterization techniques. Experimental results showed that the MOF photocatalyst with organic ligands has better degradation ability under visible light than that without ligands. The removal efficiency of TC at a concentration of 40 mg⋅L⁻¹ was 87.5% under the irradiation of visible light. The studies show that it is effective to degrade other antibiotics of TC class. Furthermore, the results indicate that this catalyst maintains high efficiency in natural water and under varying pH conditions (acidic to alkaline), highlighting its promise for TC degradation. This study provides a new pathway for degrading TC contaminant in water system by employing different organic ligandin MOF catalyst.</div></div>","PeriodicalId":18265,"journal":{"name":"Materials Research Bulletin","volume":"194 ","pages":"Article 113719"},"PeriodicalIF":5.7,"publicationDate":"2025-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144852728","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}