jablonkagroup/rise_ai_scientists huggingface dataset:
Authors: Vinidu Gamage | Gobika Thiripuranathar | Upul Nishshanka | Namal Priyantha | Siyath Gunawardene | Sumedha Jayanetti
Source: Discover Chemistry. (article, 2025-02-10)
Field: Materials Science — Electronic, Optical and Magnetic Materials

Application of nanomaterials in surface-enhanced Raman spectroscopy for pesticide detection Pesticides are physical or biological agents, and their quantities in the surroundings must be controlled and closely monitored since they are hazardous to people, animals, and the environment. Although there are traditional methods for detecting pesticides, such as gas chromatography/liquid chromatography–mass spectroscopy (GC/LC–MS), researchers have recently developed alternative approaches due to the modern methods’ affordability, environmental friendliness, and ease of use. Surface-enhanced Raman spectroscopy (SERS) relies on the optical properties of nanostructured materials to significantly amplify Raman signals, enabling sensitive and rapid detection of pesticide residues. By functionalizing nanoparticles (NPs) with specific receptors, these sensors provide efficient environmental monitoring and management through prompt and sensitive pollution detection. This review addresses the limitations of traditional pesticide detection methods and examines the role of nanomaterials (NMs) in enhancing SERS-based detection. Further, it will summarize the potential of NMs in transforming pesticide detection and improving accuracy and efficiency through advances in nanostructure design and SERS technologies. Nanomaterials ; Raman spectroscopy ; Surface-enhanced Raman spectroscopy ; Materials science ; Nanotechnology ; Pesticide ; Spectroscopy ; Environmental chemistry ; Chemistry ; Optics ; Raman scattering ; Physics Gold and Silver Nanoparticles Synthesis and Applications ; Biosensors and Analytical Detection ; Spectroscopy Techniques in Biomedical and Chemical Research
Authors: Yiyi Wang | Xiaonan Du | Yanmin Jia | Lu Qin | Fei Liu | Yingchun Cai | Suping Wang
Source: Frontiers in Cellular and Infection Microbiology (article, 2025-10-01)
Field: Materials Science — Materials Chemistry

Recent progress in antimicrobial strategies of controlled-release nanomaterials for secondary caries Secondary caries is a leading cause of restoration failure. Inhibiting caries through antimicrobial efficacy is essential for extending the restoration's service life. Antimicrobial agents have been incorporated into restorative materials for decades. Based on their mechanism of antimicrobial action, these materials are classified as either releasing or non-releasing types. However, the simple release strategy is often insufficient for long-term caries prevention, as it lacks the precision, durability, and adaptability now required. This necessitates the development of next-generation systems that can provide a controlled, sustained, and targeted antimicrobial activity. To this end, this review focuses on advanced, controlled-release antimicrobial strategies, exploring the design of novel nanomaterials, their functional efficacy, and the mechanisms of their representative antimicrobial agents. Antimicrobial ; Anti-Infective Agents ; Adaptability ; Mechanism (biology) ; Antimicrobial peptides Nanoparticles: synthesis and applications ; Graphene and Nanomaterials Applications ; Bone Tissue Engineering Materials
Authors: Bernardo Sievers | L. Granja | Andrés Zelcer | Dilson Juan | Valeria Ferrari | S. Passanante | M. Verónica Lombardo | M. Cecilia Fuertes | Rodolfo O. Fuentes | Joaquín Sacanell
Source: ACS Applied Energy Materials (article, 2025-01-08)
Field: Materials Science — Materials Chemistry

Tuning Electrochemical Properties and Thermal Stability of YSZ Mesoporous Thin Films for SOFC Applications Dense and mesoporous 4% mol Yttria stabilized zirconia thin films were deposited on amorphous silica substrates. The effects of the temperature on the mesostructure were analyzed by applying different thermal treatments to the samples within the range of solid oxide fuel cell (SOFC) operation conditions. Electrochemical impedance spectroscopy measurements rendered evidence of a single mechanism, consistent with grain boundary-surface oxide ion conduction. Our results show that the presence of the highly accessible porosity improves the superficial ionic conductivity, reducing the activation energy of the overall process. Density functional theory calculations on the (110) surface were performed to estimate the associated energy barriers. Our results suggest that ionic transport along the surface of accessible pores connected to the atmosphere could account for the observed reduction in activation energy. Therefore, we expect that the incorporation of a mesoporous thin film between the electrolyte and the electrode materials will enhance the interfacial electrochemical processes, thereby improving the SOFC performance. Materials science ; Mesoporous material ; Yttria-stabilized zirconia ; Thermal stability ; Electrochemistry ; Nanotechnology ; Chemical engineering ; Thin film ; Composite material ; Cubic zirconia ; Chemistry ; Electrode ; Ceramic ; Organic chemistry ; Engineering Advancements in Solid Oxide Fuel Cells ; Electronic and Structural Properties of Oxides ; Gas Sensing Nanomaterials and Sensors
Authors: Gon Seo | B.-H. Kim | H. S. Lim | Jaewon Choi | Minse Kim | Hyungseok Lee | Hyun‐Ouk Kim
Source: Materials Advances (article, 2025-11-13)
Field: Materials Science — Materials Chemistry

Biomedical applications and future perspectives of carbon dots and their hybrid nanomaterials Schematic showing carbon dots (graphene, carbon, polymer, doped and semiconductor types) and their hybrid nanostructures for biomedical use, including bioimaging (FRET, targeting, SERS), biosensing, therapy (PTT, PDT, SDT) and antimicrobial actions. Nanomaterials ; Carbon fibers ; Quantum dot ; Nanomedicine ; Nanoparticle ; Carbon Nanoparticles Carbon and Quantum Dots Applications ; Graphene and Nanomaterials Applications ; Graphene research and applications
Authors: Lucas Le Gars | Minati Tiadi | Sylvain Le Tonquesse | Bin Zhang | Thang Tran | Youngkyu Kim | Chanhyeok Kim | Masato Yoshiya | Susumu Fujii | Carmelo Prestipino | Erik Elkaı̈m | Pierric Lemoine | B. Raveau | Koichiro Suekuni | B. Malaman | G. Le Caër | Thierry Schweitzer | Christophe Candolfi | Adèle Renaud | Xiaoyuan Zhou | Emmanuel Guilmeau
Source: Chemistry of Materials (article, 2025-06-28)
Field: Materials Science — Materials Chemistry

Coexistence of Two Sphalerite Frameworks: A Vector for the Enhancement of Thermoelectric Performances in Zn-Doped Cu<sub>5</sub>Sn<sub>2</sub>S<sub>7</sub> Sphalerite-derivative copper-based sulfides have emerged in the past decade as serious candidates for cost-efficient and environmentally friendly thermoelectric applications. In order to investigate pathways to adjust the charge carrier concentration and optimize the thermoelectric properties in Cu5Sn2S7, a recently discovered degenerate semiconductor with an ordered monoclinic structure, we have synthesized a series of Zn-substituted Cu5–xZnxSn2S7 sphalerite derivatives. For 0 ≤ x ≤ 0.4, a monoclinic sphalerite derivative phase is mainly formed, while for 0.4 < x ≤ 1, two sphalerite derivatives with monoclinic and tetragonal symmetries coexist. By substituting Zn for Cu in Cu5–xZnxSn2S7, we observe a substantial increase of the thermoelectric figure of merit zT up to 0.36 at 673 K in the biphasic region around x = 0.8. This improvement mainly arises from the strong reduction of the lattice thermal conductivity, itself driven by the coexistence of two phases with distinct sphalerite S subnetworks and enhanced cationic disorder in the tetragonal phase with respect to the monoclinic phase. The role of percolation between the grains in the electrical conductivity in the biphasic samples is also considered. The relationships between this complex crystal chemistry and the electrical and thermal transport properties are addressed in detail by using a combination of synchrotron X-ray diffraction, Mössbauer spectroscopy, transmission electron microscopy, first-principles calculations, and transport property measurements. Sphalerite ; Thermoelectric effect ; Doping ; Materials science ; Thermoelectric materials ; Zinc ; Condensed matter physics ; Crystallography ; Chemistry ; Metallurgy ; Physics ; Thermodynamics ; Optoelectronics ; Pyrite Advanced Thermoelectric Materials and Devices ; Chalcogenide Semiconductor Thin Films ; Gas Sensing Nanomaterials and Sensors
Authors: Sunirmal Majumder | Md. Kawsar Alam
Source: physica status solidi (b) (article, 2025-11-28)
Field: Materials Science — Materials Chemistry

Optoelectronic and Piezoelectric Properties of Novel Janus Monolayer Al <sub>2</sub> AsX ( <i>X</i> = Sb, P) In this theoretical study, we introduce novel Janus double‐layer honeycomb (DLHC) materials, Al 2 AsX ( X = Sb, P). The dynamic stability of these materials is demonstrated through positive phonon dispersion and mechanical stability via Born's criterion. The two monolayers investigated exhibit distinct electronic properties; Al 2 AsSb presents a direct bandgap 0.435 eV, whereas Al 2 AsP features an indirect bandgap of 1.964 eV. Notably, under biaxial strains ranging from −6% to 8%, tunability of the bandgap is observed for both monolayers. An indirect‐to‐direct bandgap transition in Al 2 AsP at +3% strain enhances its suitability for optoelectronic applications by improving quantum efficiency. Furthermore, the study highlights the optical properties of the DLHC monolayers under strain, where the Al 2 SbAs monolayer demonstrates a high absorption coefficient (14.78 × 10 5 cm −1 ) coupled with a narrow full width at half maximum (FWHM) indicating its potential as a selective ultraviolet absorber. The birefringent characteristics of Al 2 AsX ( X = Sb, P) may also find applications in optical waveplates and polarization‐controlled spontaneous emissions. Additionally, due to the absence of inversion symmetry, the piezoelectric properties of Al2SbAs ( d 11 = 2.7022 pm/V) are revealed, outperforming other known 2D piezoelectric materials such as WS 2 and α‐quartz. Our findings underscore the considerable potential of monolayer Al 2 AsX ( X = P, Sb) for the advancement of innovative optoelectronic and piezoelectric devices. Piezoelectricity ; Monolayer ; Janus ; Band gap ; Birefringence ; Strain engineering ; Direct and indirect band gaps ; Attenuation coefficient 2D Materials and Applications ; Boron and Carbon Nanomaterials Research ; Cellular and Composite Structures
Authors: Yingkai Xia | Shuang Wei | Wei Xiao | Yuehui Chen | Jie Ding | Haoyuan Zheng | Sen Yang | Shaobin Yang
Source: Frontiers in Chemistry (article, 2025-09-22)
Field: Materials Science — Electronic, Optical and Magnetic Materials

Trace phenol-formaldehyde resin activation mechanism of intermediate graphitic layer removal in carbon for enhanced Li-ion capacitor performance Precise modulation of the pore structure in activated carbon can further enhance the capacitance performance of supercapacitors. As a carbonaceous precursor, phenol-formaldehyde resin (PR) plays a dual role in both carbon deposition and activation for pore regulation; however, the activation mechanism governing its pore-tuning effect remains unclear. In this study, trace PR with a mass ratio of 0.2%-0.8% was mixed with activated carbon for heat treatment. The results revealed that trace amounts of PR exhibit an activation mechanism by selectively removing intermediate graphene layers. Specifically, the removal of one-three graphene layers resulted in the formation of periodic micropores with diameters of 0.50-0.56 nm, 0.81-0.90 nm, and 1.14-1.19 nm. Correlation analysis demonstrated that the pore size most strongly associated with lithium-ion capacitance and diffusion coefficients fell within the range formed by the removal of a single graphene layer. Compared with one-step activation using PR, the multi-step activation process slowed the rate of pore expansion following single-layer removal, facilitating the formation of a greater proportion of 0.54 nm pores-those most closely linked to enhanced capacitance and ion diffusion. Consequently, the prepared coal-derived activated carbon achieved a capacitance of 164 F g<sup>-1</sup>, matching the highest reported values for aqueous lithium-ion capacitors using porous carbon (PC) materials. This study reveals a novel mechanism of precise pore modulation at the 0.01 nm scale through trace PR activation, providing new insights into the structural regulation of PC materials for advanced energy storage applications. Capacitance ; Graphene ; Carbon fibers ; Activated carbon ; Activation energy ; Diffusion ; Aqueous solution Supercapacitor Materials and Fabrication ; Advancements in Battery Materials ; Advanced Battery Materials and Technologies
Authors: Yerila Rodríguez-Martínez | S. Domínguez-Meister | Daniela Minudri | T.C. Rojas | A. Dianova-Pardo | Francisco Fernández-Carretero | Marta Brizuela
Source: Surface and Coatings Technology (article, 2025-04-14)
Field: Materials Science — Materials Chemistry

Protective Ti sub-oxide coatings on proton exchange water electrolysis prepared by HiPIMS technology Electrolysis, the process of splitting water into hydrogen and oxygen using electrical current, stands as a pivotal technology in the current hydrogen economy. Among various electrolyser technologies, proton exchange membrane water electrolysers (PEMWEs) are favored for their high efficiency, durability, and suitability for commercial applications. However, the cost of PEMWE systems, particularly the bipolar plates (BPs), which account for ∼25 % of system costs, remains a critical challenge. Stainless steel BPs has been explored as a cost-effective alternative to titanium BPs, but they require protective coatings to prevent corrosion under PEMWE conditions. This study focuses on developing titanium suboxide (Ti sub-oxide) coatings for stainless steel BPs to enhance corrosion resistance, maintaining a moderate contact resistance. Ti sub-oxide coatings were deposited using High-Power Impulse Magnetron Sputtering (HiPIMS), a technique enabling high-density and homogeneous material deposition. Key strategies to increase coating compactness, including substrate polarization and cyclic ion bombardment during deposition, were investigated. Morphological and compositional analyses were conducted, along with evaluations of corrosion resistance and electrical performance. The results demonstrate that Ti sub-oxide coatings developed with the selected approaches, exhibit improved compactness, which could potentially limit electrolyte infiltration, enhancing the durability and performance of stainless steel substrates. These findings highlight the promising behavior of Ti sub-oxide coatings under harsh PEMWE conditions. While further studies are needed in actual PEM electrolyzers, they suggest a cost-effective solution for advancing PEMWE technology and green hydrogen scalability toward Net Zero goals. • Ti sub-oxide coatings were deposited on stainless steel using the HiPIMS technique. • Substrate polarization and ion bombardment enhanced coating compaction effectively. • Corrosion tests were conducted for 24 h under PEMWE working conditions. • Increased bombardment cycles yielded coatings with higher corrosion resistance. • A higher protection was achieved for Ti sub-oxide coatings with more cycles. Electrolysis ; High-power impulse magnetron sputtering ; Oxide ; Materials science ; Proton ; Electrolysis of water ; Chemical engineering ; Metallurgy ; Inorganic chemistry ; Chemistry ; Nanotechnology ; Electrolyte ; Electrode ; Sputtering ; Sputter deposition ; Engineering Hydrogen Storage and Materials ; Hybrid Renewable Energy Systems ; Electrocatalysts for Energy Conversion
Authors: Guo Zhong | Jiayu Zhou | Bin Cui | Hui Sun
Source: Molecules (review, 2025-07-31)
Field: Chemistry — Inorganic Chemistry

Progress in Stereoselective Haloamination of Olefins The regio- and stereoselective adjacent bifunctionalization of olefins with amine and halogen groups can be effectively accomplished through catalytic haloamination methods. Stereoselective haloamination has emerged as a pivotal methodology for the introduction of halogen functional groups into chiral amines, demonstrating substantial applications in medicinal chemistry and organic synthesis. Since 1999, significant advancements have been achieved in this field, driven by innovations in catalytic systems and methodologies. The stereoselective haloamination of both functionalized and nonfunctionalized alkenes employing chiral catalysts has emerged as a prominent area of research. This review provides a comprehensive overview of the research progress in stereoselective haloamination reactions from 1999 to 2023. It examines the innovations in catalyst design that have facilitated more efficient and selective transformations. The review also analyzes the optimization of reaction conditions, which has been crucial in improving the overall performance and applicability of these reactions. Furthermore, it explores the diverse range of haloamination reactions that have been developed, emphasizing their potential for the synthesis of complex and valuable chemical structures. Additionally, this review offers insightful perspectives on future research directions in stereoselective haloamination reactions. Stereoselectivity ; Chemistry ; Catalysis ; Combinatorial chemistry ; Halogen ; Amine gas treating ; Organic chemistry ; Biochemical engineering ; Nanotechnology ; Materials science ; Engineering Vanadium and Halogenation Chemistry ; Oxidative Organic Chemistry Reactions ; Synthesis and Catalytic Reactions
Authors: Fatemeh Hassani Khorshidi | Ahmad Ramazani | A. Pizzi | Widya Fatrıasarı
Source: Jurnal Sylva Lestari (review, 2025-04-18)
Field: Chemistry — Organic Chemistry

Selecting a Suitable Synthesis of Industrial Hot Melt Nanostructured Polyurethane Adhesives for the Enhanced Bonding of MDF and PVC Veneers - A Review This review focuses on the synthesis and application of industrial hot-melt nanostructured polyurethane adhesives (HMPUAs) used for enhancing the bonding of medium-density fiberboard (MDF) with polyvinyl chloride (PVC) veneers. The use of PVC veneers has been identified as an effective approach to protect wood composite products, particularly MDF, due to its resistance to moisture, environmental conditions, and cost-effectiveness. However, achieving strong adhesion between PVC and MDF remains challenging due to differences in their chemical and structural properties. This study compares various synthesis methods of polyurethane adhesives, emphasizing the prepolymer method as the most efficient approach for producing high-performance HMPUAs. Key challenges include optimizing the isocyanate to hydroxyl group ratio (NCO/OH), selecting appropriate polyols, and incorporating suitable additives. The effects of nanoparticles, including nanosilica, nanolignin, phosphorus, nitrogen compounds, mica particles, and aluminum trihydrate, on the mechanical and thermal properties of polyurethane adhesives are thoroughly discussed. Furthermore, the challenges of achieving consistent adhesive performance, compatibility, and durability under varying environmental conditions are addressed. The findings of this review provide essential insights into improving the synthesis of one-component HMPUAs and enhancing their applicability in MDF-PVC veneer bonding. Keywords: additives, hot melt adhesive, medium-density fiberboard, polyurethane, reactive resin Polyurethane ; Materials science ; Adhesive ; Composite material Photopolymerization techniques and applications
Authors: K. Marimuthu | Shamsher Bahadur Singh | Banasri Roy | Sudhirkumar V. Barai
Source: Polymer Composites (article, 2025-10-17)
Field: Materials Science — Polymers and Plastics

Thermo‐Mechanical Characterization of Phenolic Woven Composite Laminates for Use in Fire/Blast‐Prone Aircraft Baggage Structures ABSTRACT This paper experimentally investigates the thermal and mechanical performance of woven phenolic laminates reinforced with carbon (PF‐CFRP), glass (PF‐GFRP), basalt (PF‐BFRP), and Kevlar (PF‐KFRP), aiming to evaluate their suitability for aircraft baggage structures under fire and blast loads. Phenolic resin cured under single‐stage high‐temperature conditions (PF100) demonstrated a superior glass transition temperature of 150.0°C, tensile modulus of 2.61 GPa, and tensile strength of 32.51 MPa. Thermogravimetric analysis revealed that PF‐CFRP retained 87.9% mass at 800°C under nitrogen, while PF‐BFRP retained the highest mass in air (79.1%), followed by PF‐GFRP (66.3%). PF‐KFRP exhibited poor thermal stability (47.7%), even lower than the neat resin (58.9%) under nitrogen. PF‐CFRP exhibited the highest modulus and strength, with 68.50 GPa and 776.78 MPa, respectively, and an in‐plane shear strength of 110.46 MPa. PF‐BFRP showed the highest flexural strength of 362.93 MPa, excellent tensile strength of 587.63 MPa, and improved bending failure strain of 2.25%. PF‐GFRP exhibited moderate mechanical performance, with tensile and flexural strengths of 224.11 MPa and 292.59 MPa, respectively, with consistent shear performance. PF‐KFRP exhibited the highest failure strain (2.76% in tension), but weak interfacial bonding. Scanning electron microscopy revealed distinctive failure modes, including fiber breakage, pull‐out, delamination, and matrix cracking. Radar plots were used for comparative visualization, identifying PF‐BFRP as optimal for blast/fire resilience and PF‐CFRP for stiffness‐critical zones. Overall, the study highlights the potential of basalt‐phenolic composites and recommends functionally graded hybrid composites as next‐generation materials for aircraft baggage structures under combined mechanical and thermal conditions. Ultimate tensile strength ; Flexural strength ; Kevlar ; Thermogravimetric analysis ; Composite laminates ; Epoxy ; Glass fiber ; Modulus ; Scanning electron microscope ; Resilience (materials science) Flame retardant materials and properties ; Fire dynamics and safety research ; Natural Fiber Reinforced Composites
Authors: <p>Chu Wan<sup>1</sup>, Shuquan Xin<sup>1</sup>, Xiaodan Li<sup>2</sup>, Xinpei Wei<sup>1</sup>, Jiangfeng Yang<sup>1</sup> </p>
Source: Academic Journal of Agriculture & Life Sciences (article, 2025-01-01)
Field: Materials Science — Materials Chemistry

Advances in Metallic Nano-Pesticides: Synthesis, Mechanisms, Applications, Safety, and Future Perspectives Metallic nano-pesticides have emerged as a promising technology in modern agriculture, offering improved efficacy, reduced environmental impact, and potential applications in precision agriculture. This review provides a comprehensive overview of metallic nano-pesticides, covering their synthesis methods, mechanisms of action, applications in pest and disease control, and ecological safety concerns. The synthesis section explores physical, chemical, and biological approaches, highlighting their respective advantages and limitations. The antimicrobial effects of metallic nanoparticles are analyzed in terms of their interaction with microbial membranes, ion release, and photocatalytic activity. Their applications as fungicides, insecticides, and herbicides are discussed, emphasizing their role in combating pesticide resistance and enhancing agricultural productivity. However, concerns regarding their environmental fate, bioaccumulation, and potential toxicity to soil microbiota and plants are critically examined. Finally, future perspectives on integrating nano-pesticides with smart agricultural technologies, risk assessment frameworks, and sustainable synthesis strategies are discussed, underscoring their potential to drive the transition toward eco-friendly and high-efficiency agricultural systems. Nano- ; Pesticide ; Nanotechnology ; Engineering ; Materials science ; Chemical engineering ; Biology Nanoparticles: synthesis and applications ; Polymer-Based Agricultural Enhancements