jablonkagroup/rise_ai_scientists huggingface dataset:
Authors: Firzanah Hisham | Kartini Ahmad | Maziati Akmal Mohd Hatta | Farah Ahmad
Source: AIMS Materials Science (article, 2026-01-01)
Field: Materials Science — Biomaterials

Extraction of chitosan-based piezoelectric thin film from shrimp shell waste In this study, we explored the potential of chitosan, a natural polysaccharide derived from shrimp shell waste, for piezoelectric applications in biomedical, food, and agricultural industries. Despite limited research on its piezoelectric properties, chitosan has gained attention due to its non-toxicity and energy-harvesting potential. We focused on optimizing the extraction of chitosan from shrimp shell waste for these applications. Chitin powder was treated with NaOH concentrations ranging from 30% to 60% to remove acetyl groups and create chitosan. The best results for chitosan extraction were achieved using a 50% NaOH solution. Piezoelectric properties of chitosan thin films dissolved in formic acid were also analyzed, showing the best performance with a piezoelectric constant (k) of 0.3158, maximum charge (Qm) of 64.1, and a low loss tangent (tan δ) of 0.0156. Later, the biological assessment of the chitosan thin films, namely the antimicrobial and biocompatibility analyses, were performed to evaluate their interaction with biological systems and to determine their potential for biomedical and biotechnological applications. The results indicated that the chitosan thin film exhibited no cytotoxic effects, highlighting its promise as a safe and suitable material for diverse biomedical uses. Chitosan ; Extraction (chemistry) ; Shrimp ; Piezoelectricity ; Biocompatibility ; Thin film ; Chitin Nanocomposite Films for Food Packaging ; Advanced Sensor and Energy Harvesting Materials ; Acoustic Wave Resonator Technologies
Authors: Abdulkerim Karaman | Saša S. Ilić | Stefan Schmidt | Marius Ross | Marie Zöller | Michael Marré | Andreas Ujma
Source: Metals (article, 2026-03-27)
Field: Materials Science — Materials Chemistry

Preliminary Investigations into Internally Coated Fittings Made from ZnAl15Cu1Mg (ZEP1510) Stricter drinking water regulations intensify the need to replace leaded brasses in fittings. This work reports preliminary results on internally coated fittings using the wrought zinc alloy ZnAl15Cu1Mg (ZEP1510). A straight-tube Model Geometry 1 was lined internally with HDPE by gas-assisted injection molding, achieving a continuous barrier of 1.55–1.70 mm without altering the external envelope. A press-type T-fitting (32–32–32) was defined as Model Geometry 2 to benchmark forgeability; process layout (FEM) and warm-forging trials are summarized. Recycling relevance was addressed via a partial-melt (drip-off) route, which removed a substantial polymer fraction but left measurable residues. A production-cycle PCF from material production to finished tee indicates 3.156 kg CO2e for ZEP1510 vs. 5.385 kg CO2e (CuZn40Pb2) and 6.301 kg CO2e (CuZn21Si3), i.e., 41.85% and 50.06% savings. These findings establish manufacturability, indicate recycling feasibility, and quantify a CO2 advantage, outlining the next steps toward lining complex geometries and drinking water compliance. Work (physics) ; Production (economics) ; Process (computing) ; Zinc ; Injection moulding ; Polymer Metallurgy and Material Science ; Aluminum Alloys Composites Properties ; Injection Molding Process and Properties
Authors: Tilahun Tumiso | Yohannes Shuka Jara | Lomi Abayneh | Amanuel Abriham | Abdulkadir Ukule
Source: Nanotechnology for Environmental Engineering (article, 2026-03-05)
Field: Chemistry — Organic Chemistry

Catalytic Degradation of Toxic Rhodamine B and Safranin O Dyes With Green Synthesized Copper Nanoparticles In the sphere of science and technology, nanotechnology stands out as a rapidly advancing field, characterized by the manipulation of metal and metal oxide materials at scales of $$\le$$ 100 nanometres. In the present study, copper nanoparticles (CuNPs) were synthesized through a green method using the aqueous extract of Vernonia amygdalina leaves as a natural reducing and capping agent, after which the catalytic degradation of toxic organic dyes, namely, Safranin O commonly known as basic red 2 (SO-BR2) and Rhodamine B (RhB), in the presence of NaBH4 was evaluated. The synthesized CuO NPs were characterized using UV‒Vis, FT-IR, XRD, and SEM techniques, and their results confirmed the successful synthesis of the nanomaterial a via the plant-assisted method with characteristic peak of Cu-O bond interaction at 809 cm⁻¹ a band gap of 3.71 eV, a mean crystalline size of 2.406 nm and varied morphologies with medium agglomeration. The catalytic degradation of SO-BR2 and RhB by the CuNPs in the presence of NaBH4 exhibited maximum efficiencies of 97.74 ± 0.0410% and 94.22 ± 0.0408%, respectively, under the optimized conditions. Kinetic studies revealed strong correlation coefficients close to 1 for both pseudo-zero and pseudo-first order kinetics models, indicating that both models effectively describe the reaction dynamics during the catalytic degradation of dyes on CuNPs. Furthermore, the nanocatalysts exhibited excellent reusability and stability over four cycles. The results demonstrate the potential of green-synthesized CuNPs as a cost-effective and environmentally friendly solution for organic dye degradation, highlighting their promising application in addressing dye pollution in aqueous environments. Catalysis ; Rhodamine B ; Nanomaterial-based catalyst ; Nanomaterials ; Degradation (telecommunications) ; Aqueous solution ; Nanoparticle ; Bromothymol blue ; Safranin Nanomaterials for catalytic reactions ; Copper-based nanomaterials and applications ; Environmental remediation with nanomaterials
Authors: Maxence Vincent | Thibault Charpentier | Raphaël Janot | Eddy Petit | Umit B. Demirci
Source: International Journal of Hydrogen Energy (article, 2026-02-21)
Field: Chemistry — Inorganic Chemistry

Al–N–H compounds derived from ammonia alane: Synthesis strategies and characterization International audience Characterization (materials science) ; Ammonia ; Ammonia production ; Nitrogen ; Hydrogen Synthesis and characterization of novel inorganic/organometallic compounds ; Hydrogen Storage and Materials ; Ammonia Synthesis and Nitrogen Reduction
Authors: Ling‐Ping Xiao | Shuang-Lin Zou | Ying-Chun Xu | Shuai Zhang | Wenzheng Yin | Qiang Wang | Chunlin Xu | Runcang Sun
Source: Research Square (preprint, 2026-03-03)
Field: Chemistry — Organic Chemistry

Strongly adhesive and sustainable photopolymers via reaction-sequenced network design Photopolymer ; Adhesive ; Curing (chemistry) ; Epoxy ; Acrylate ; Polymerization ; Polymer ; Cellulose ; UV curing Photopolymerization techniques and applications ; Polymer composites and self-healing ; Epoxy Resin Curing Processes
Authors: Huidong Li | Ye Tao | Chengqi Cao | Qiu Zhong | Xuyang Li | X. L. Pan | Zhijun Xu | Caiyun LUO | Zhijie Jia
Source: Research Square (preprint, 2026-03-06)
Field: Materials Science — Polymers and Plastics

In-orbit Measurement of Thermal Conductivity of Na 2 Mo 2 O 7 Melt under Microgravity Conditions on the China Space Station Thermal conductivity ; Thermal conduction ; Work (physics) ; Thermal conductivity measurement ; Thermal ; Transient (computer programming) ; Convection ; Conductivity Transition Metal Oxide Nanomaterials ; Solidification and crystal growth phenomena ; Spacecraft and Cryogenic Technologies
Authors: Nadson Humberto Costa Ferrer | Maria Alice Melo de Pinheiro | Aquiles Silva do Nascimento | Vitor Davis Melo | Dayane Caroline Tenório e Silva | João Victor Araújo de Lima | Paulo E. Cabral Filho | Adriana Fontes | Beate S. Santos | Luiz Stragevitch | Elisa Soares Leite
Source: Brazilian Journal of Chemical Engineering (article, 2026-03-06)
Field: Materials Science — Materials Chemistry

Eco-friendly carbon dots obtained from renewable sources: novel nanotaggants for ethanol fuel This study explores the application of green carbon dots (CDs) as sustainable nanotaggants for determining the quality and authenticity of ethanol fuel. Ethanol, a key renewable biofuel, faces challenges related to adulteration and traceability, requiring innovative solutions to ensure this. In this study, CDs were synthesized from two sugarcane by-products via hydrothermal and solvothermal methods and characterized using UV-Vis and photoluminescence spectroscopies, Fourier transform infrared spectroscopy, Zeta potential analysis, and transmission electron microscopy. The synthesized CDs were added to anhydrous ethanol and exhibited strong absorption and emission spectra with blue photoluminescence. They also demonstrated optical stability over 4 years and full compatibility with anhydrous ethanol, without altering its physicochemical properties. These findings suggest that CDs offer a promising, eco-friendly potential for fuel authentication and quality monitoring. By leveraging waste-derived nanomaterials, this study advances green chemistry principles and provides a viable strategy for reinforcing ethanol fuel integrity in the biofuel industry. Biofuel ; Renewable energy ; Photoluminescence ; Zeta potential ; Anhydrous ; Fourier transform infrared spectroscopy ; Renewable fuels ; Ethanol fuel Carbon and Quantum Dots Applications ; Electrochemical sensors and biosensors ; Advanced Photocatalysis Techniques
Authors: Saraswati Ghadai | Suchismita Acharya | Mamalisa Sahoo | Monali Priyadarsini Mishra | S.K. Biswal | S.N. Sarangi
Source: Asian Journal of Chemistry (article, 2026-01-31)
Field: Materials Science — Materials Chemistry

A Dual-Strategic Approach to Synthesize Fe2O3 Nanoparticles with Study on their Structural, Optical and Antibacterial Properties In this study, iron(III) oxide (Fe2O3) nanoparticles were synthesized using two approaches namely a conventional chemical co-precipitation method and a green synthesis route utilizing Azadirachta indica leaf extract, which simultaneously functions as a reducing and stabilizing agent. Following synthesis, the nanoparticles underwent characterization to assess their optical behaviour along with structural and morphological features. Through XRD characterization, Fe2O3 was identified in its rhombohedral crystalline configuration, with average particle sizes measured as 42 nm for co-precipitation-derived samples and 35 nm for those synthesized via the green route. Scanning electron microscopy (SEM) revealed size variations between the two synthesis routes, with the green method producing relatively smaller and more uniformly dispersed nanoparticles. UV-Vis absorption spectra indicated the characteristic optical transitions with slight band gap variations, attributed to particle size and surface modifications by phytochemicals present in the neem extract. Fourier-transform infrared spectroscopy revealed characteristic Fe–O bond vibrations together with biomolecular groups in Fe2O3 nanoparticles produced via the neem-assisted route. Antimicrobial testing performed using the agar well diffusion method against Staphylococcus aureus and Escherichia coli showed that the green-synthesized particles achieved greater inhibition zones. This enhancement is associated with their nanoscale size, enlarged surface-to-volume ratio and the functional bioactive molecules originating from neem extract. Overall, the study underscores the potential of green synthesis for designing effective and biocompatible antibacterial nanomaterials. Nanoparticle ; Particle size ; Scanning electron microscope ; Antibacterial activity ; Molecule ; Particle (ecology) ; Absorption spectroscopy ; Azadirachta ; Infrared spectroscopy Nanoparticles: synthesis and applications ; Iron oxide chemistry and applications ; Nanoparticle-Based Drug Delivery
Authors: Muluneh Endashaw kassa | Teketel Girma Gindose | Enyew Zereffa | Guta Amenu | Muktar Ahmed Adem | Tegene Desalegn
Source: Royal Society Open Science (article, 2026-03-04)
Field: Materials Science — Materials Chemistry

Multifunctional Fe3O4 modified ZnO dual phase nanostructure for photocatalytic, antibacterial and antioxidant activities Abstract In this study, Fe3O4 (F), ZnO (Z), and Fe3O4/ZnO (FZ) nanomaterials were synthesized using leaf extract as a reducing and stabilizing agent. Characterization was performed using thermogravimetric–differential thermal analysis, Fourier transform infrared, X-ray diffraction, Brunauer–Emmett–Teller, scanning electron microscopy, high-resolution transmission electron microscopy, diffuse reflectance spectroscopy and photoluminescence techniques. The FZ (2 : 1) composite showed the smallest crystallite size (18 nm), modified band gap (2.46 eV) and highest surface area (97 m2 g−1), suggesting strong catalytic and antibacterial potential. The photocatalytic activity of the synthesized materials against methylene orange (MO) was evaluated, achieving maximum efficiency (96%) for FZ (2 : 1) and minimum efficiency (76%) for F nanoparticles. Furthermore, the antibacterial activities of F and FZ (2 : 1) materials against Enterococcus faecalis and Escherichia coli were assessed. At 100 µg mL−1, inhibition zones of 23.00 ± 0.58 mm for E. faecalis and 21.67 ± 0.24 mm for E. coli were obtained with the composite. These values represent improvements of 38 and 44.5%, respectively, compared with Fe3O4 nanoparticles, which exhibited inhibition zones of 16.67 ± 0.49 and 15.00 ± 0.56 mm. Likewise, the antioxidant activities of F and FZ (2 : 1) were evaluated, with maximum inhibition percentages of 66.31 and 89.32, respectively, at 100 µg ml−1. Overall, the results indicate that the FZ (2 : 1) composite exhibits remarkable efficiency among the synthesized materials. Nanomaterials ; Enterococcus faecalis ; Crystallite ; Photocatalysis ; Antibacterial activity ; Scanning electron microscope ; Fourier transform infrared spectroscopy ; Methylene blue ; Transmission electron microscopy Nanoparticles: synthesis and applications ; Magnetic Properties and Synthesis of Ferrites ; Magnesium Oxide Properties and Applications
Authors: Puji Nurrahmawati | Rangga Agung Pribadi Heriawan | Adam Rasyid Sidiqi | Nevi Faradina | Ranny Febrianali | Ali Basrah Pulungan | Krismadinata | Iwantono | Suratun Nafisah | Marlia Morsin
Source: IOP Conference Series Earth and Environmental Science (article, 2026-03-01)
Field: Materials Science — Materials Chemistry

Optical and Morphological Characteristic of ZnO:Al/SiO <sub>2</sub> Nanorods for Enhanced Light Absorption in Dye-Sensitized Solar Cells Application Abstract This study investigates the optical and morphological characteristics of ZnO, Al-doped ZnO (ZA), and ZnO:Al-SiO 2 (ZAS) nanorods prepared using a hydrothermal method. The incorporation of SiO 2 aims to enhance light absorption and surface properties, with potential relevance to dye-sensitized solar cell (DSSC) photoanode materials. UV-Vis spectroscopy showed a slight decrease in band gap with Al doping, while the addition of SiO 2 improved the overall absorbance. FESEM analysis revealed that the ZAS sample had a more compact and uniform morphology. These results suggest that the combined effects of Al doping and SiO 2 compositing can enhance the structural and optical properties of ZnO nanorods, making them promising candidates for future application in DSSC devices. Nanorod ; Absorption (acoustics) ; Hydrothermal circulation ; Compositing ; Solar cell ; Doping ; Spectroscopy ZnO doping and properties ; TiO2 Photocatalysis and Solar Cells ; Pigment Synthesis and Properties
Authors: Rodolpho A. N. Silva | Fernando E. Maturi | Gabriel L. Colombo | Bruno S. D. Onishi | Beatriz D. Freitas | Fábio José Caixeta | Marian R. Davolos | Marco Aurélio Cebim | Luís Carlos | S. D. A. Ribeiro | Sergio A. M. Lima | Ana Maria Pires
Source: Frontiers in Chemistry (article, 2026-02-23)
Field: Materials Science — Materials Chemistry

Castor oil and europium-based luminescent films for thermal sensing Luminescent thermometry has emerged as a powerful tool for remote temperature sensing, yet the development of sustainable materials that combine robust photophysical performance with environmental compatibility remains a challenge. Herein, we report a bio-derived luminescent thermometric film obtained by incorporating the europium-based complex [Eu (tta)<sub>3</sub>(PIB)] into a castor-oil-based alkoxysilane polymer (SiCO). The resulting luminescent films are transparent, stable, and preserve the structural integrity and optical characteristics of the trivalent europium (Eu<sup>3+</sup>) complex, as confirmed by spectroscopic analyses. Efficient ligand-to-metal energy transfer gives rise to well-defined Eu<sup>3+</sup> emission, while residual ligand-centered luminescence enables a ratiometric thermometric approach. Temperature-dependent photoluminescence measurements reveal distinct thermal quenching behaviors of the ligand and Eu<sup>3+</sup> emissions, allowing reliable temperature readout through an intensity ratio thermometric parameter. The optimized SiCO-0.25Eu film exhibits a maximum relative thermal sensitivity of 1.31% K<sup>-1</sup> at 189 K and a minimum temperature uncertainty of 0.43 K at 173 K, maintaining stable performance over a broad low-temperature range (42-282 K) and under repeated thermal cycling. These results demonstrate that castor-oil-derived polymer matrices can serve as efficient and sustainable platforms for luminescent thermometry, offering a promising route toward environmentally friendly luminescent temperature sensors for low-temperature applications. Luminescence ; Europium ; Photoluminescence ; Polymer ; Quenching (fluorescence) ; Thermal ; Atmospheric temperature range Luminescence Properties of Advanced Materials ; Lanthanide and Transition Metal Complexes ; Metal-Organic Frameworks: Synthesis and Applications
Authors: Vikas B. Patil | Madhav Mane | Santosh B. Katariya | D.V. Mane
Source: Asian Journal of Chemistry (article, 2026-01-31)
Field: Materials Science — Materials Chemistry

Effect of Crystallinity and Optical Tuning in Sonochemically Synthesised ZnO Nanoparticles for Enhanced Photocatalytic Efficiency In this work, phase-pure ZnO nanoparticles were synthesized via an ultrasonic-assisted sonochemical route and systematically characterized to elucidate their structural, thermal, optical, and photocatalytic properties. Thermogravimetric analysis revealed a minor mass loss (~3.5%) below 400 ºC, attributed to the removal of surface-adsorbed organic species, confirming the subsequent thermal stability of ZnO NPs. X-ray diffraction analysis confirmed the formation of a single-phase hexagonal wurtzite structure (space group P63mc) with a lattice parameter a = 3.517 Å and an average crystallite size of 21.6 nm, as estimated by the Debye-Scherrer equation. Energy-dispersive X-ray spectroscopy verified the stoichiometric Zn:O composition, with trace carbon arising from residual surface species. Scanning and transmission electron microscopy revealed quasi-spherical polycrystalline aggregates with a mean particle size of 48.22 nm. High-resolution TEM analysis displayed well-defined lattice fringes with interplanar spacings of 0.28 nm (100) and 0.26 nm (002), indicating the presence of single-crystalline domains within the aggregates. FT-IR spectroscopy confirmed residual organic functional groups alongside characteristic Zn–O vibrational modes in the 848-404 cm-1 range. UV-visible spectroscopy demonstrated a widened direct bandgap of 3.27 eV, indicative of quantum confinement effects. Photocatalytic performance evaluated under 366 nm UV irradiation showed efficient degradation of methylene blue (10 ppm), achieving over 50% removal within 160 min and following pseudo-first-order kinetics. The combined effects of high crystallinity, bandgap modulation and surface reactivity underscore the potential of these ZnO nanoparticles as effective photocatalysts for advanced oxidation processes in environmental remediation. Crystallite ; Wurtzite crystal structure ; Crystallinity ; Thermogravimetric analysis ; Photocatalysis ; Spectroscopy ; Transmission electron microscopy ; Nanoparticle ZnO doping and properties ; Advanced Photocatalysis Techniques ; Ultrasound and Cavitation Phenomena
Authors: Kodiganti Naresh Kumar | Tharani Munusamy | Malchi Suresh | Manju Bhargavi S | Nalini Devarajan
Source: International Research Journal of Multidisciplinary Scope (article, 2026-01-01)
Field: Materials Science — Materials Chemistry

Biogenic Synthesis of Copper Oxide Nanoparticles using Anethum graveolens; Antibacterial, Anticancer and Therapeutic Potential in vitro Analysis In this current study, copper-oxide nanoparticles (Cu-ONPs) were produced via an eco-friendly approach with A. graveolens (dill) seed aqueous extract as a stabilizing and reducing precursor. This process was revealed by a visible colour transformation from light green to dark green and also confirmed by UV-Vis spectroscopy. Characterization was conducted using techniques that included FTIR, XRD, SEM with EDX, and TEM. UV-Visible spectroscopy revealed broad peaks at 342–380 nm. FTIR spectral analysis revealed the involvement of various functional groups in stabilization. XRD also confirmed the crystallinity of AG-CuONPs, and SEM images showed a predominantly spherical shape with a relatively smooth surface morphology, with agglomeration. TEM images revealed uniformly distributed particles with an average diameter of 45 nm. The AG-CuONPs showed strong anti-bacterial activity against P. aeruginosa, E. Coli, and S. aureus, with increasing efficacy at higher concentrations. Furthermore, it showed promising antioxidant properties (DPPH assay), anti-inflammatory potential (BSA and EA denaturation tests), and potential anticancer properties against A549 lung cancer cells, with low cytotoxicity toward HEK293 normal cells. These results highlight the potential of dill seed-mediated CuONPs' eco-friendly approach towards the development of novel antimicrobial and anticancer agents. Additional research is required to discover its anticancer activities under an in vivo system. Fourier transform infrared spectroscopy ; Cytotoxicity ; In vitro ; Nanoparticle ; Anethum graveolens ; In vivo ; Crystallinity ; Antioxidant ; Aqueous solution Nanoparticles: synthesis and applications ; Copper-based nanomaterials and applications ; Laser-Ablation Synthesis of Nanoparticles
Authors: G. I. Edo | G. N. Mafe | T. S. Gaaz | I. Iwanegbe | A. N. Jikah | Kugbere Emumejaye | E. Yousif | J. O. Owheruo | U. A. Igbuku | E. E.A. Oghroro | R. S. Makia | A. E.A. Essaghah | D. S. Ahmed | H. Umar
Source: Food systems (article, 2026-01-28)
Field: Chemistry — Organic Chemistry

Food-contact surfaces coated with antimicrobial polymeric materials The growing demand for improved food safety has fueled significant interest in antimicrobial polymeric coatings for food contact surfaces. This review offers a thorough examination of various antimicrobial coatings, including natural biopolymerbased, synthetic, and hybrid composites, spotlighting their modes of action and effectiveness in combating microbial contamination. It explores key antimicrobial agents such as metal-based compounds, natural antimicrobials, and synthetic chemicals, discussing their unique properties and potential applications. Equally, the review evaluates different testing methods for antimicrobial efficacy and identifies critical performance factors, including environmental conditions, surface properties, and the type of microbial contaminants. The hurdles and limitations of these coatings are also addressed, including concerns about durability, health and environmental impacts, and economic viability. Through detailed case studies, this review synthesizes current knowledge and offers insights into future research, with a particular focus on biodegradable polymers and innovative natural antimicrobials. The findings emphasize the potential of antimicrobial coatings to enhance food safety and inform the development of sustainable food packaging technologies, supporting advancements in health-conscious and environmentally friendly industrial applications. Antimicrobial ; Environmentally friendly ; Food packaging ; Food industry ; Natural polymers ; Natural (archaeology) ; Natural materials Antimicrobial agents and applications ; Nanocomposite Films for Food Packaging ; Polymer-Based Agricultural Enhancements