jablonkagroup/rise_ai_scientists huggingface dataset:
Authors: Erik Biehler | Tarek M. Abdel‐Fattah
Source: Materials (article, 2025-10-27)
Field: Materials Science — Materials Chemistry

Spherical Carbon Derived from Sustainable Sources and Decorated with Silver Nanoparticles as a Catalyst for Hydrogen Release The reliance on carbon-based fuels remains a major contributor to greenhouse gas emissions, emphasizing the need for sustainable alternatives such as hydrogen. Sodium borohydride (NaBH<sub>4</sub>), with a hydrogen content of 10.6 wt%, is a promising chemical hydrogen storage material capable of releasing four moles of H<sub>2</sub> per mole through hydrolysis; however, effective catalysts are essential for practical implementation. In this study, silver nanoparticles supported on glucose-derived carbon microspheres (AgSC) were synthesized and evaluated for catalytic NaBH<sub>4</sub> hydrolysis. Structural characterization (XRD, TEM, SEM, EDS) confirmed the uniform dispersion of metallic silver nanoparticles on the carbon support with no detectable Ag<sub>2</sub>O phase. AgSC exhibited superior catalytic activity compared to unsupported Ag or bare carbon, achieving the highest hydrogen generation under neutral pH, elevated temperatures, and 835 µmol NaBH<sub>4</sub>. The catalyst displayed an activation energy of 54 kJ mol<sup>-1</sup>, turnover numbers (TONs) of 1.4 × 10<sup>5</sup>-1.9 × 10<sup>5</sup><b>,</b> and turnover frequencies (TOFs) of 7.1 × 10<sup>4</sup>-9.3 × 10<sup>4</sup> h<sup>-1</sup>, demonstrating efficient utilization of active sites. pH-dependent studies revealed optimal hydrogen yield under neutral conditions, while acidic and basic media reduced performance due to surface poisoning and BH<sub>4</sub><sup>-</sup> stabilization, respectively. Reusability tests showed only ~5% activity loss after five cycles. These findings establish AgSC as a stable, efficient, and recyclable catalyst for on-demand hydrogen generation, supporting sustainable clean fuel technologies. Sodium borohydride ; Catalysis ; Hydrogen ; Hydrogen production ; Carbon fibers ; Silver nanoparticle ; Dispersion (optics) ; Hydrogen storage Hydrogen Storage and Materials ; Electrocatalysts for Energy Conversion ; Hybrid Renewable Energy Systems
Authors: Muhammad Nasir Riaz | Khizra Ikhlaq | Ghulam Safia | Malik Ahmed Mubeen | Altaf Hussain | Fouzia Haider | Rajib Saha | Misbah Parveen | Muhammad Nauman Aftab
Source: Indus journal of bioscience research. (article, 2025-08-01)
Field: Materials Science — Materials Chemistry

Plant-Mediated Synthesis of Zn-Ag Nanocomposites for Multifunctional Wastewater Treatment The rapid growth of industrialization and urbanization has led to severe contamination of water bodies with various organic and inorganic pollutants. Traditional wastewater treatment methods often fall short due to their high cost, limited efficiency, and secondary pollution. In this context, plant-mediated synthesis of nanomaterials has emerged as a green, cost-effective, and sustainable alternative for environmental remediation. This review highlights recent advances in the plant-based synthesis of zinc-silver (Zn-Ag) nanocomposites, emphasizing their multifunctional roles in wastewater treatment. Plants serve as eco-friendly reducing and stabilizing agents, enabling the fabrication of Zn-Ag nanocomposites without the need for toxic chemicals or high energy inputs. The synergistic interaction between Zn and Ag nanoparticles enhances the physicochemical properties of the nanocomposites, including high surface area, stability, and potent antimicrobial and photocatalytic activities. These features make Zn-Ag nanocomposites highly effective in degrading organic dyes, neutralizing heavy metals, and inactivating pathogenic microorganisms in wastewater. The review further discusses the influence of plant species, synthesis parameters, and nanocomposite characteristics on treatment efficacy. Moreover, it identifies key challenges, such as scalability, standardization, and environmental impact that must be addressed for real-world application. Overall, this review underscores the promising potential of plant-mediated Zn-Ag nanocomposites as a versatile and sustainable solution for integrated wastewater treatment. Nanocomposite ; Environmental remediation ; Sewage treatment ; Wastewater ; Environmentally friendly ; Pollutant ; Context (archaeology) ; Environmental pollution ; Environmental science ; Waste management ; Materials science ; Nanotechnology ; Environmental engineering ; Chemistry ; Contamination ; Environmental protection ; Engineering ; Ecology Nanoparticles: synthesis and applications ; Graphene and Nanomaterials Applications
Authors: Lorenzo Di Terlizzi | Davide Ravelli | Burkhard Koenig
Source: Green Chemistry (article, 2025-01-01)
Field: Chemistry — Organic Chemistry

Photocatalytic transformation of aliphatic heterocycles and electron-poor alkenes into functionalized heteroarenes The merger of decatungstate photocatalysis and cobaloxime catalysis enabled the preparation of functionalized heteroarenes via a hydroalkylation/aromatization sequence starting from largely available aliphatic heterocycles and electron-poor olefins. Photocatalysis ; Catalysis ; Sequence (biology) ; Transformation (genetics) ; Photoredox catalysis Radical Photochemical Reactions ; Chemical Synthesis and Reactions ; Asymmetric Synthesis and Catalysis
Authors: H.S. Tanvir Ahmed | Ali M. Mohammad | İbrahim Nazem Qader | Karukh Ali Babakr | Hero S. Ahmed Al-Jaf | Barkat Ali | B. Ahmed | Mohammed B. Jumaa
Source: Journal of Electronic Materials (article, 2025-12-15)
Field: Materials Science — Materials Chemistry

Silica-Induced Structural Refinement and Magnetic Dilution of NiFe2O4 Nanocomposites Amorphous solid ; Analytical Chemistry (journal) ; Nanocomposite ; Spinel ; Ferrite (magnet) ; Nanoparticle ; Fourier transform infrared spectroscopy ; Calcination ; Saturation (graph theory) ; Spectroscopy Magnetic Properties and Synthesis of Ferrites ; Electromagnetic wave absorption materials ; Nanoparticle-Based Drug Delivery
Authors: Rong Shao | Yehyun Kim | N. Sanoj Rejinold | Zhiwei Zhang | Yu Sun | Hongxia Chu | Jun Zhang | Goeun Choi | Meijie Liu | Yun‐Ze Long | Jin‐Ho Choy
Source: Advanced Healthcare Materials (article, 2025-11-27)
Field: Materials Science — Biomaterials

Portable Device for Wound Care: An Electrosprayable Zinc Basic Salt‐Tranexamic Acid Nanohybrid System Portable, point-of-care wound dressings that combine rapid hemostasis with pro-regenerative cues are a clinical priority. We report two handy electrospinning strategies that integrate tranexamic acid-intercalated zinc basic salts (TXA-ZBS, via co-precipitation) with polycaprolactone (PCL) nanofibers: i) embedded (TXA-ZBS/PCL), formed by blending TXA-ZBS into the PCL spinning solution, and ii) surface-coated (TXA-ZBS@PCL), produced by electrospinning TXA-ZBS onto preformed PCL nanofiber mats. Both architectures preserve the mechanical integrity and conformal, spray-on deployability of PCL while enabling TXA delivery at the wound interface with concurrent Zn<sup>2</sup>⁺ release. In head-to-head testing, TXA-ZBS@PCL provided greater cumulative TXA availability with sustained, diffusion/ion-exchange-governed kinetics, consistent with direct aqueous access to surface-deposited TXA-ZBS, whereas TXA-ZBS/PCL exhibited a more diffusion-limited profile due to the polymer barrier. In vitro and in vivo wound models showed that the coated architecture supported faster hemostatic responses and improved wound-closure metrics relative to the embedded format. Taken together, these results identify surface-coated TXA-ZBS@PCL as the preferred design for localized, surface-constrained hemostasis, while the embedded configuration offers a more restricted release option when deeper diffusion is not desired. The comparative framework presented here guides selection of architecture for next-generation, handy portable wound device. Polycaprolactone ; Electrospinning ; Nanofiber ; Wound dressing ; Wound healing ; In vivo ; Spinning ; Hemostasis Electrospun Nanofibers in Biomedical Applications ; Hemostasis and retained surgical items ; Wound Healing and Treatments
Authors: Muhammad Aamir | Ahmar Ali | K. Nadeem
Source: Characterization and Application of Nanomaterials (article, 2025-01-15)
Field: Materials Science — Polymers and Plastics

Tuning dielectric properties in metal-doped NiO nanoparticles Nickel Oxide (NiO) nanoparticles (NPs), doped with manganese (Mn) and cobalt (Co) at concentrations up to 8%, were synthesized using the composite hydroxide method (CHM). X-ray diffraction (XRD) analysis confirmed the formation of a cubic NiO structure, with no additional peaks detected, indicating successful doping. The average crystallite size was determined to range from 15 to 17.8 nm, depending on the dopant concentration. Scanning electron microscopy (SEM) images revealed mostly spherical, agglomerated particles, likely due to magnetic interactions. Fourier Transform Infrared Spectroscopy (FTIR) confirmed the incorporation of Mn and Co into the NiO lattice, consistent with the XRD results. The dielectric properties exhibited a high dielectric constant at low frequencies, which can be attributed to ion jump orientation and space charge effects. The imaginary part of the dielectric constant decreased with increasing frequency, as it became harder for electrons to align with the alternating field at higher frequencies. Both the real and imaginary dielectric constants showed behavior consistent with Koop's theory, increasing at low frequencies and decreasing at higher frequencies. Dielectric loss was primarily attributed to dipole flipping and charge migration. AC conductivity increased with frequency, and exhibited higher conductivity at high frequencies due to small polaron hopping. These co-doped NPs show potential for applications in solid oxide fuel cells. Non-blocking I/O ; Materials science ; Dielectric ; Doping ; Nanoparticle ; Metal ; Nanotechnology ; Optoelectronics ; Chemical engineering ; Metallurgy ; Chemistry ; Engineering Transition Metal Oxide Nanomaterials ; Dielectric properties of ceramics ; Gas Sensing Nanomaterials and Sensors
Authors: Jacopo Teotonico | Daniele Mantione | Kimberly K. Hollister | Haritz Sardón | Nicholas Ballard | Fernando Ruipérez | Robert J. Gilliard | Fernando Vidal
Source: Journal of Polymer Science (article, 2025-05-25)
Field: Materials Science — Materials Chemistry

Introduction of 9‐Bromo‐9‐Borafluorene Scaffold Into Deep Blue Emitting π‐Conjugated Polymers ABSTRACT We report the first successful incorporation of 9‐bromo‐9‐borafluorene into a π‐conjugated co‐polymer consisting of 9,9‐silafluorene and 9,9‐dioctylfluorene units through a SiB exchange reaction. The parent 9,9‐silafluorene copolymer exhibits deep blue fluorescence, with CIE 1931 (0.15, 0.04), a high quantum yield ( Φ = 93.9%), and excellent thermal stability ( T 5d = 439°C). Density functional theory (DFT) calculations were employed to investigate the optical and electronic properties, revealing the structure of the molecular orbitals that contribute to the HOMO–LUMO bandgap of these conjugated co‐polymers. Additionally, we explored the Lewis acidity of the borafluorene unit and its potential for forming dynamic networks through reversible Lewis pair interactions, using 4,4′‐bipyridine as a model Lewis base. The integration of both silicon and boron into a π‐conjugated polymer backbone offers new opportunities for tuning the optical and electronic properties of materials for potential applications in OLED materials. Conjugated system ; Scaffold ; Polymer ; Deep blue ; Chemistry ; Polymer science ; Photochemistry ; Organic chemistry ; Engineering ; Biomedical engineering Luminescence and Fluorescent Materials ; Organic Electronics and Photovoltaics ; Conducting polymers and applications
Authors: Aliyu Shehu | O. A. Oluwole | Uduma A. Uduma
Source: UMYU Journal of Microbiology Research (UJMR) (article, 2025-06-30)
Field: Materials Science — Materials Chemistry

Green Synthesis, Optimization, and Characterization of Copper Nanoparticles Using a Combined Extract of Selected Plant Seeds This work investigates a verde method involving synthesizing, optimizing, and characterizing copper nanoparticles (CuNPs) developed from black seed, neem seed, and baobab seed extracts. The optimal synthesis conditions were investigated by means of a Taguchi method. UV-Vis spectroscopy was used to confirm the formation of CuNPs, which exhibited an SPR peak of 590.10nm (Fig. 1), indicating the nanoparticles presence. Characteristic peaks at 566.65, 984.04,1088.47,1632.62,2117.12, and 3265.16 cm 1 were observed, attributing to Cu-O and CuOH and Cu-O-C bonds, as well as hydroxyl and carbon dioxide functional groups, indicating an effective capping and stabilization of the nanoparticles by plant phytochemicals (FTIR analysis). The crystalline nature of CuNPs has been confirmed using X-ray diffraction analysis, which gave diffraction peaks at 22.43, 47.07, 67.12, and 87.33. The particle size was found to be 25.51nm. The particles exhibited a mostly spherical shape with some degeneracy, when analyzed by scanning electron microscopy (SEM), and the elemental composition (EDX) characterized a copper content of 45.3% and additional plant-derived stabilizing agents, such as carbon, oxygen, and trace elements. Besides, the antimicrobial assay showed potent inhibitory effects on multiple microbes that are all pathogenic. The CuNPs showed significant antibacterial activity, exhibiting maximum inhibition zones against Acinetobacter baumannii (17 mm) and Escherichia coli (19mm). These results emphasize the potential of biogenically synthesized CuNPs as potential antimicrobial agents, which should provide a sustainable alternative for biomedical and pharmaceutical applications. Nanoparticle ; Copper ; Antimicrobial ; Particle size ; Scanning electron microscope ; Escherichia coli ; Antibacterial activity ; Silver nanoparticle Nanoparticles: synthesis and applications ; Copper-based nanomaterials and applications ; Coagulation and Flocculation Studies
Authors: Mengqi Xie | Yutong Liu | Xiaohui Zhao | Zhidong Liu | Jinghao Zhang | Dengyue Zuo | Cui Guang | Hui Cao | Maoyuan Li
Source: Photonics (article, 2025-06-29)
Field: Materials Science — Electronic, Optical and Magnetic Materials

Collaboration of Two UV-Absorbing Dyes in Cholesteric Liquid Crystals Films for Infrared Broadband Reflection and Ultraviolet Shielding This study developed cholesteric liquid crystal broadband reflective films using zinc oxide nanoparticles (ZnO NPs) and homotriazine UV-absorbing dye (UV-1577) to enhance infrared shielding. Unlike benzotriazole-based UV absorber UV-327, which suffers from volatility and contamination, UV-1577 exhibits superior compatibility with liquid crystals, higher UV absorption efficiency, and enhanced processing stability due to its larger molecular structure. By synergizing UV-1577 with ZnO NPs, we achieved a gradient UV intensity distribution across the film thickness, inducing a pitch gradient that broadened the reflection bandwidth to 915 nm and surpassing the performance of previous systems using UV-327/ZnO NPs (&lt;900 nm). We conducted a detailed examination of the factors influencing the reflective bandwidth. These included the UV-1577/ZnO NP ratio, the concentrations of the polymerizable monomer (RM257) and chiral dopant (R5011), along with polymerization temperature, UV irradiation intensity, and irradiation time. The resultant films demonstrated efficient ultraviolet shielding via the UV-1577/ZnO NPs collaboration and infrared shielding through the induced pitch gradient. This work presents a scalable strategy for energy-saving smart windows. Ultraviolet ; Materials science ; Infrared ; Optoelectronics ; Broadband ; Reflection (computer programming) ; Electromagnetic shielding ; Optics ; Ultraviolet radiation ; Physics ; Chemistry Liquid Crystal Research Advancements ; Photonic Crystals and Applications ; Nonlinear Optical Materials Studies
Authors: Alice Njolke Mafe | Great Iruoghene Edo | Patrick Othuke Akpoghelie | Endurance Fegor Isoje | Ufuoma Augustina Igbuku | Joseph Oghenewogaga Owheruo | Arthur Efeoghene Athan Essaghah
Source: Al-Mustaqbal Journal of Sustainability in Engineering Sciences (article, 2025-07-04)
Field: Materials Science — Materials Chemistry

Biosynthesis of Metallic Nanoparticles Using Plant Extracts: Mechanisms, Advances, and Sustainable Applications Growing concerns over the environmental and health impacts of conventional nanoparticle synthesis have driven a shift toward green, plant-based methods. This review highlights the biosynthesis of nanoparticles using plant extracts as a sustainable, economical and non-toxic alternative. Plant-derived phytochemicals such as flavonoids, phenolics, and alkaloids serve dual roles as natural reducing and stabilizing agents, enabling the production of nanoparticles typically ranging between 10 and 100 nm. Several studies have demonstrated up to 80% yield improvement when using optimized extracts from plants like Azadirachta indica and Ocimum sanctum. The review outlines recent progress, including the use of novel botanical sources, advanced synthesis strategies, and comparative evaluations of plant extract efficiency. Key applications are discussed across medicine (e.g., targeted drug delivery and antimicrobial therapy), environmental cleanup (e.g., 90% dye degradation within 2 hours), and agriculture (e.g., 30% increase in crop yield via nano-fertilizers). Despite promising outcomes, issues such as scalability, reproducibility, and regulatory inconsistencies persist. The review underscores the potential of plant-mediated nanoparticle synthesis for advancing sustainable technologies and emphasizes the need for standardized methodologies and collaborative research to support its broader implementation. Nanoparticle ; Nanotechnology ; Biochemical engineering ; Biosynthesis ; Chemistry ; Materials science ; Engineering ; Biochemistry Nanoparticles: synthesis and applications
Authors: Thomas Vicart | Youssef Doubi | Bouchra Asbani | Nitul S. Rajput | Ahmed Kotbi | M. El Marssi | My Alı El Khakani | Mustapha Jouiad
Source: Research Square (preprint, 2025-11-03)
Field: Materials Science — Materials Chemistry

Modulating MoS2 Conductivity through Nitrogen Doping: A Spray-Coating Approach to P-Type 2D Semiconductors Raman spectroscopy ; Molybdenum disulfide ; X-ray photoelectron spectroscopy ; Doping ; Crystallite ; Semiconductor ; Thin film ; Conductivity ; Nitrogen 2D Materials and Applications ; Chalcogenide Semiconductor Thin Films ; Graphene research and applications
Authors: S Rajavignesh | K Manoranjan | J Habr | P Lenfeld | L Behalek | M Boruvka | P Brdlik | F Tanas | C Teac | M Nechifor | M Stanciu | P Thangavel | S Vignesh | R Sureshkumar | A Gowrishankar | R Girimurugan | M Shihab | S Ibrahim | S Mahmoud | A Noser | K Jagatheesan | T Satheeshkumar | T Manickam | J Iyyadurai | M Jaganathan | A Babuchellam | M Mayakrishnan | F Arockiasamy | R Kurien | D Selvaraj | M Sekar | C Koshy | C Paul | S Palanisamy | C Santulli | P Kumar | A Balajikrishnabharathi | D Jayabalakrishnan | H Alshahrani | A Vincent Rethnam | P Rajasekaran | G Loganathan | A Gandhi | H Anandaram | R Josep | C Ramanjaneyulu | S Saravanan | G Babu | P Prabhu | M Dani | N Saravanan | L Girisha | K Uday | R Ramalingam | S Nanthakumar | M Anbarasu | M Mathanbabu | M Venkatasudhahar | R Velu | N Dilip Raja | K Logesh | T | A Appusamy | S Laxmanan | M Subramaniyan | P Maheskumar | K Kumar | S Jeyaprakasam | M Gnanasekaran | S Magibalan | R Singh | V Mohanavel | S Kannan | J Giri | M Ali | P Barmavatu | M Ponnuswamy | T Sathishkumar | M Selvaraju | V Sundramurthy | A Sinha | S Bhattacharya | H Narang | M Shakir | A Singh | A Moorthy | K Kanagaraj | M Palanisamy | G Ramasamy | N Rosli | F Khairudin | H Kargarzadeh | R Othaman | I Ahmad | M Marwan | E Indarti
Source: Malaysian Journal of Chemistry (article, 2025-06-20)
Field: Materials Science — Polymers and Plastics

Optimizing Fiber-Matrix Interaction: Impact of Plasma Treatment on Abaca and Kenaf Polymer Composites Epoxy composites reinforced with abaca (AF) and kenaf (KF) fibers were the focus of this investigation.Both fibers were exposed to plasma from a dielectric barrier discharge (DBD) for processing time of 5 to 25 minutes.Epoxy resin mixes with AF or KF were not necessary for plasma treatment.The plasma-treated fibers' infrared spectra revealed amplified carboxyl group peak intensity in the Fourier transform.The tensile strength of Epoxy/AF treated for 20 minutes reached 60.8 MPa, whereas the elongation at break of Epoxy/KF treated for the same amount of time increased by 6.4%.Flexural testing showed that kenaf composites, when treated with plasma, had a much higher flexural strength (up to 62.2 MPa) than abaca composites.Both composites benefited from plasma treatment, which improved surface coarseness and fiber interactive adhesion.The DBD plasma treatment enhanced the material's thermal stability and wettability.The composites' mechanical, thermal, and water contact angle (WCA) characteristics were enhanced by the dielectric barrier discharge treatment, which improved the interaction bonding of the fibers and matrix. Kenaf ; Composite material ; Materials science ; Fiber ; Matrix (chemical analysis) ; Polymer Natural Fiber Reinforced Composites ; Material Properties and Processing
Authors: Alexander V. Shokurov | Max Nobre Supelnic | Carlo Menon
Source: Advanced Sensor Research (article, 2025-12-17)
Field: Chemistry — Analytical Chemistry

Sialic Acid Sensing via Molecularly Imprinted Polymer on Laser‐Induced Graphene ABSTRACT Sialic acid is an important biomarker for oral diseases, including cancer. We show that electropolymerization of aminophenylboronic acid onto laser‐induced graphene substrate in the presence of sialic acid results in the formation of a molecularly imprinted polymer. Removal of the template sialic acid makes the film capable of subsequent recognition of this analyte. Interaction of the sensor film with the analyte is then tracked using electrochemical approaches in the presence of an external redox‐couple, differential pulse voltammetry showing the clearest analytical signal (sensitivity of 14.113 µA/m m ). The studies comparing the imprinted and non‐imprinted samples show that the effect of imprinting is indeed the cause of the selective detection capabilities of the electropolymerized film, exhibiting an average imprinting factor of around 12.72. It is demonstrated that the sensor can measure sialic acid in a clinically relevant range of salivary concentrations (LOD = 0.598 m m ), being able to recognize threshold levels associated with cancerous processes. The sensor shows good selectivity to the chosen SA analyte in the tests with common saliva interferents: proteins and glucose. While performance in real samples of unstimulated whole saliva is lacking, the developed sensor shows potential for use in lab and point‐of‐care assessments. Sialic acid ; Analyte ; Molecularly imprinted polymer ; Differential pulse voltammetry ; Molecular imprinting ; Saliva ; Selectivity ; Graphene ; Cyclic voltammetry Analytical chemistry methods development ; Electrochemical sensors and biosensors ; Analytical Chemistry and Chromatography