jablonkagroup/rise_ai_scientists huggingface dataset:
Authors: Débora Danielle Virgínio da Silva | Kelly J. Dussán | Isabela A. L. Costa | Marcus Bruno Soares Forte | Maria G. A. Felipe
Source: Fermentation (article, 2025-04-27)
Field: Materials Science — Materials Chemistry

Hydrotalcites as a Promising Adsorbent for Hemicellulose Hydrolysate Detoxification in Xylitol Production The worldwide demand for sustainable bioprocesses is undeniable, as well as for research aimed at the biotechnological exploitation of lignocellulosic materials, especially their hemicellulosic fractions rich in xylose. Various bioproducts can be obtained from these fractions, although some bottlenecks still exist, such as the presence in hemicellulosic hydrolysates of compounds that are toxic for microorganisms, which requires a previous step of detoxification to reduce them to non-inhibitory levels. The present investigation proposes the use of hydrotalcites as a new detoxifying agent for the hemicellulosic hydrolysate of sugarcane straw to produce xylitol by Candida tropicalis, aiming at a greater removal of phenolics and less loss of sugars. The design of these experiments was used for factorial effect analysis in a simultaneous way; the influences of pH and temperature were evaluated, considering the detoxification process at different times for both uncalcined and calcined hydrotalcite adsorbents. While for the calcined hydrotalcite, the temperature was the significant factor, for the uncalcined, there was also an influence of pH and little effect on the factors of yield and productivity. The effectiveness of hydrotalcites as demonstrated in this research, mainly regarding the ability to reduce the content of phenolic compounds in hydrolysates with a low loss of sugar content, followed by fermentability to produce xylitol, is a strong requirement for the proposition of these new adsorbents in investigations of the development of sustainable technologies for obtaining bioproducts in a biorefinery context. Detoxification (alternative medicine) ; Xylitol ; Hemicellulose ; Hydrolysate ; Production (economics) ; Chemistry ; Food science ; Pulp and paper industry ; Biotechnology ; Economics ; Hydrolysis ; Biology ; Fermentation ; Biochemistry ; Medicine ; Microeconomics ; Engineering Layered Double Hydroxides Synthesis and Applications ; Nanomaterials for catalytic reactions ; Catalysis for Biomass Conversion
Authors: Tomáš Pipota | Aleš Helebrant
Source: Journal of Materials Science (article, 2025-08-22)
Field: Materials Science — Ceramics and Composites

Modified glasses based on P2O5–CaO system, their dissolution behavior and structure Abstract When designing new glass-based materials, it is usual to use glasses made of complex component systems, which results in specific and quite unique material properties such as tailored dissolution kinetics, a property highly sensitive to the composition alteration. However, the preparation method and the crucible material can affect the resulting composition and overall glass properties. This work investigates the dissolution behavior and structure of simple glasses from the system P 2 O 5 –CaO prepared in porcelain crucibles. A series of glass samples with increasing phosphate content was subjected to a static dissolution experiment in demineralized water. Concentrations of P, Ca and Si in the leachates were evaluated using ICP-OES. The structure of glasses was observed via XRD and FTIR. The results showed majority of prepared samples had glassy structure. By dissolution experiments performed on prepared glasses, incongruent dissolution was observed at the metaphosphate type sample, congruent dissolution occurred at ultraphosphates. Suitable mathematical models describing observed behavior were proposed. Materials science ; Dissolution ; Solid mechanics ; Mineralogy ; Chemical engineering ; Composite material ; Chemistry Glass properties and applications ; Pigment Synthesis and Properties ; Recycling and utilization of industrial and municipal waste in materials production
Authors: Sebastijan Kovačič | Roko Vladušić
Source: Journal of Applied Polymer Science (article, 2025-12-08)
Field: Materials Science — Materials Chemistry

<scp>PAMPS PolyHIPEs</scp> : The Role of Shape, Porosity, and Sulfonate Group Density on Metal‐Ion Adsorption From Water ABSTRACT In this study, the adsorption performance of poly(2‐acrylamido‐2‐methylpropanesulfonic acid) (PAMPS)‐based polymerized high internal phase emulsion (polyHIPE) for the removal of Zn 2+ , Fe 3+ , and Al 3+ ions from water is investigated. The triple‐factor analysis includes the role of shape, porosity, and sulfonate group density. By systematically comparing different forms of PAMPS, that is, polyHIPE beads and monoliths (shape effect), PAMPS homopolymers and copolymers (SO 3 − group density effect), and porous polyHIPEs compared to commercially available gel‐type, non‐macroporous beads (porosity effect), we determine how structure–function relationships govern metal ion uptake. The results show ion‐specific effects: The high charge density of Fe 3+ and Al 3+ generates a strong electrostatic driving force for multipoint binding to SO 3 − groups, which leads to fast adsorption. In contrast, Zn 2+ adsorption is slower due to its lower charge density and the relatively stable hydration sphere. It therefore appears to be diffusion‐limited compared to Fe 3+ and Al 3+ . These results show how the polymer architecture can be tuned to optimize adsorption efficiency, selectivity, and robustness. Such a design principle of PAMPS‐based polyHIPEs demonstrates a strategy to customize adsorbents for advanced water treatment applications. Sulfonate ; Adsorption ; Emulsion ; Charge density ; Ion ; Copolymer ; Polymerization ; Porosity ; Polymer Pickering emulsions and particle stabilization ; Proteins in Food Systems ; Adsorption and biosorption for pollutant removal
Authors: Danilo W. Losito | Jéssica A. F. Pedro | Luís C. Cides da Silva | Matheus Carlos Romeiro Miranda | Animesh Dutta | Rafael M. Santos | Tereza S. Martins
Source: ChemPlusChem (article, 2025-07-16)
Field: Materials Science — Materials Chemistry

Enhanced CO<sub>2</sub> Adsorption on CeO<sub>2</sub>/SBA‐15: The Key Role of Oxygen Vacancies This study investigates the role of oxygen vacancies in the CO<sub>2</sub> adsorption and desorption dynamics of SBA-15:CeO<sub>2</sub> nanocomposites synthesized by direct (DS) and postsynthesis (PS) methods. Physicochemical analyses reveal that the DS method increases the concentration of oxygen vacancies and structural defects within the CeO<sub>2</sub> framework, which significantly boosts CO<sub>2</sub> adsorption capacity and strengthens the gas-surface interactions. Among the materials, S_Ce4.a demonstrates the highest adsorption capacity, reaching 29.4 mg g<sup>-</sup> <sup>1</sup> at 25 °C and 10.7 mg g<sup>-1</sup> at 70 °C. These results indicate a physisorption mechanism governed by both thermal conditions and oxygen vacancies. Furthermore, S_Ce4.a and S_Ce10.a. exhibit remarkable stability over 20 adsorption-desorption cycles. The findings suggest that a lower cerium oxide content provides more accessible adsorption sites, making these materials promising candidates for high-performance. Overall, this work highlights synergistic interplay between oxygen vacancies and mesoporous structures, paving the way for the rational design of advanced materials for CO<sub>2</sub> capture technologies. Physisorption ; Adsorption ; Oxygen ; Cerium oxide ; Oxygen storage ; Desorption ; Mesoporous material ; Chemical engineering ; Oxide ; Cerium ; Materials science ; Thermal stability ; Nanocomposite ; Chemistry ; Nanotechnology ; Inorganic chemistry ; Catalysis ; Physical chemistry ; Metallurgy ; Organic chemistry Catalytic Processes in Materials Science ; Catalysts for Methane Reforming ; Carbon Dioxide Capture Technologies
Authors: Jian Zeng | Jiangnan Zhao | Zhenzhen Cai | Jianshe Hu | Zesheng Zhuo | Xiongping Miao
Source: Water (article, 2025-10-21)
Field: Chemistry — Inorganic Chemistry

Novel Microwave-Synthesized Bimetallic Ce-Al-MOFs with Efficient Phosphate Removal from Aquaculture Effluent: Synthesis, Characterization and Applications The eutrophication of natural water is a severe environmental risk faced by coastal marine ecosystems, and the excess nitrogen and phosphorus in aquaculture effluent are one of the main sources of environmental pollution. Effectively reducing as well as controlling the phosphorus content in aquaculture effluent is of great importance for alleviating eutrophication and the governance of coastal environments. This study focuses on addressing phosphorus pollution by developing novel bimetallic Ce-Al-MOFs adsorbents via the microwave-assisted rapid synthesis method, among which the monomer Ce3Al3-BDC3 exhibits excellent phosphate adsorption capacity (136.99 mg P g−1) and great removal efficiency over a wide pH range (2~10). Batch experiments reveal that the adsorption is followed by pseudo-second-order kinetics and the Langmuir isotherm model, indicating monolayer chemisorption. The MOFs material shows high selectivity for phosphorus even under the interference of co-existing anions, as well as excellent reusability, retaining over 65% removal efficiency after six adsorption–desorption cycles. Field tests in coastal areas and indoor aquaculture systems both achieve over 97% phosphate removal, meeting discharge standards. A series of characterization methods identify ligand exchange, electrostatic interactions and surface complexation as key adsorption mechanisms. The Ce-Al-MOFs present a promising solution for mitigating eutrophication and managing aquaculture wastewater sustainably. Eutrophication ; Effluent ; Phosphorus ; Adsorption ; Aquaculture ; Sewage treatment ; Phosphate ; Wastewater Metal-Organic Frameworks: Synthesis and Applications ; Advanced Photocatalysis Techniques ; Chemical Synthesis and Characterization
Authors: Alexandra Croitoriu | Onur Yılmaz | Alina Gabriela Rusu | Catalina Natalia Cheaburu-Yılmaz | Alina Ghilan | Loredana E. Niţă
Source: Polymers (article, 2025-02-10)
Field: Chemistry — Organic Chemistry

Synthesis and Characterization of Innovative Double-Network Hydrogels with Potential as Adsorbent Materials for Wastewater Treatment Nowadays, large amounts of wastewater arise from various industrial applications. The discharge of wastewater into the environment represents a threat to the aquatic ecosystem and human health. Thus, in the present study, innovative double-network (DN) hydrogels with pH-sensitive features and applicability as adsorbents in the treatment of leather dye wastewater were prepared. The polyelectrolyte, poly(<i>N</i>,<i>N</i>-dimethylaminoethyl methacrylate (PDMAEMA), was obtained via the radical polymerization process, while the supramolecular structure was co-assembled through physical interactions. As a novelty, the double network was obtained through the interpenetration of the supramolecular network in the cross-linked polymeric one. The new hydrogels were physico-chemically and morphologically characterized by Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), and in terms of thermogravimetric analysis (TGA), swelling degree measurements, and dye adsorption studies. The DN hydrogels present interconnected macropores and high thermal stability. The swelling capacity of the dual network gels highlights a superadsorbent behavior at pH 3. Furthermore, the dye adsorption study highlights the effects of several variables (pH, concentration dose of adsorbent) on the ability of the gels to adsorb an anionic dye. The adsorption kinetics of the anionic dyes fitted the pseudo-first-order model (PFO). The estimated maximum adsorption capacities for the anionic dyes was 451 mg g<sup>-1</sup> for PDMAEMA and 545 mg g<sup>-1</sup> for DN gel. Self-healing hydrogels ; Adsorption ; Characterization (materials science) ; Wastewater ; Materials science ; Sewage treatment ; Chemical engineering ; Pulp and paper industry ; Waste management ; Nanotechnology ; Chemistry ; Polymer chemistry ; Organic chemistry ; Engineering Nanomaterials for catalytic reactions ; Adsorption and biosorption for pollutant removal ; Hydrogels: synthesis, properties, applications
Authors: Bayan Al‐Meetani | Ramtha Almadhaani | Sateria Salim | Abdul Rahman Hassan | Fahed Javed | Sulaiman Al‐Zuhair
Source: Journal of Chemical Technology & Biotechnology (article, 2025-08-07)
Field: Chemistry — Inorganic Chemistry

Enhanced stability, reusability, and lactose hydrolysis of β‐galactosidase immobilized in <scp>ZIF</scp>‐L frameworks Abstract BACKGROUND The immobilization of β‐galactosidase (lactase) on solid supports is widely pursued to enhance enzyme stability, reusability, and catalytic efficiency for industrial applications. In this study, Zeolitic Imidazolate Framework‐L (ZIF‐L), a zinc‐based metal–organic framework, was employed as a support for lactase immobilization to improve its performance in lactose hydrolysis processes. RESULTS The immobilization process yielded 5.6 mg of enzyme per gram of support, with the immobilized lactase retaining 67.3% of its initial activity. Scanning electron microscopy (SEM) confirmed the morphological integration of the enzyme with ZIF‐L, while Fourier‐transform infrared (FTIR) spectroscopy indicated chemical interactions associated with successful immobilization. The immobilized enzyme demonstrated good operational stability, retaining 86% of its initial activity after four consecutive cycles. In terms of storage stability, 77% of the enzyme's activity was maintained after 2 weeks at 4 °C. Catalytic efficiency was significantly improved post‐immobilization, with lactose hydrolysis reaching 68% within 1 h and 93% after 3 h at 37 °C, outperforming the free enzyme under the same conditions. CONCLUSION ZIF‐L proved to be an effective support material for lactase immobilization, offering enhanced stability, reusability, and catalytic efficiency. These results underscore its potential for application in dairy processing and other industrial sectors requiring efficient lactose hydrolysis. © 2025 Society of Chemical Industry (SCI). Hydrolysis ; Reusability ; Chemistry ; Lactose ; Chromatography ; Beta-galactosidase ; Chemical engineering ; Biochemistry ; Computer science ; Engineering ; Escherichia coli Metal-Organic Frameworks: Synthesis and Applications ; Amino Acid Enzymes and Metabolism ; Enzyme Structure and Function
Authors: Frank Welle
Source: Polymers (article, 2025-10-02)
Field: Materials Science — Polymers and Plastics

Diffusion Behavior of Polyethylene Furanoate (PEF) and Tritan as Sustainable Polyester Packaging Materials Polyethylene furanoate (PEF) and Tritan<sup>TM</sup> copolyester are sustainable polyester polymers. PEF is made from biobased resources, whereas Tritan is mainly used for reusable food contact articles. Both polyesters are alternatives for polyethylene terephthalate (PET), which is currently the most used polyester in food packaging. Like all packaging polymers, sustainable alternatives to fossil-based PET must also comply with food law requirements. Prediction of the migration can be used as an alternative to complex and time-consuming experimental migration measurements. Since there are no such predictive models for either PEF or Tritan, the modelling parameters for PEF and Tritan were determined in this study from experimentally determined diffusion coefficients and activation energies. The diffusivity of PEF and Tritan was compared with PET and polyethylene naphthalate (PEN). Of the four polyester polymers, PEF shows the lowest diffusion, followed by PEN, PET, and Tritan. Overall, the results show that the investigated polyesters are low-diffusivity polymers. Polyester ; Polyethylene terephthalate ; Copolyester ; Food packaging ; Polyethylene naphthalate ; Polyethylene ; Diffusion Polymer crystallization and properties ; biodegradable polymer synthesis and properties ; Recycling and Waste Management Techniques
Authors: Pranjal Gupta | Sandeep Kaur | Deepika Jamwal | Akash Katoch
Source: Particle & Particle Systems Characterization (article, 2025-06-26)
Field: Materials Science — Materials Chemistry

Bis‐Quaternary Ammonium Surfactants‐Assisted Growth of MgO Nanostructures for Water Pollution Mitigation Abstract This work explores the synthesis of magnesium oxide (MgO) nanostructures using the facile hydrothermal method, employing bis‐quaternary ammonium surfactants as shape and size directing agents. These specific surfactants are essential in structuring the nanostructures, for (12‐2‐12)‐MgO they provided anisotropic sharp‐edged nanostructures with an average size of ≈19 nm, and spherical nanoparticles with an average size of ≈53 nm for (14‐2‐14)‐MgO nanoparticles. To determine the crystalline size and lattice strain, an intensive structural investigation is carried out employing the Williamson‐Hall (W‐H) analysis. With an optical band gap value of 2.90 eV and significant quantum confinement effects, the (12‐2‐12)‐stabilized MgO nanostructures demonstrated remarkable photocatalytic efficacy in visible light degradation of organic pollutants, attaining a 96% degradation rate. In contrast, a 91% degradation rate is shown by the (14‐2‐14)‐stabilized MgO nanoparticles, with a band gap of 2.74 eV. Furthermore, the calculated conductivity values are determined for (12‐2‐12)‐MgO and (14‐2‐14)‐MgO nanostructures, varied from 7.3 to 11.61 S cm −1 and 5.6 to 9.2 S cm −1 , respectively. Owing to the greater surface‐to‐volume ratio and quantum confinement effect, (12‐2‐12)‐MgO has a higher electrical conductivity. These MgO nanostructures have significant potential for environmental applications, particularly in mitigating water pollution, as evidenced by their excellent photocatalytic performance and simple fabrication methods. Ammonium ; Nanostructure ; Quaternary ; Pollution ; Water pollution ; Chemistry ; Chemical engineering ; Nanotechnology ; Materials science ; Environmental chemistry ; Environmental science ; Organic chemistry ; Geology ; Ecology Magnesium Oxide Properties and Applications
Authors: Chirag Mevada | Aapo Kattainen | Vijay Singh Parihar | Amit Tewari | Jari Keskinen | Minna Kellomäki | Matti Mäntysalo
Source: Journal of Materials Chemistry A (article, 2025-11-25)
Field: Materials Science — Electronic, Optical and Magnetic Materials

Screen-printed supercapacitors based on vitamin B <sub>2</sub> functionalized carbon electrodes and deep eutectic solvent electrolytes A flexible supercapacitor was fabricated via screen-printing with cellulose diacetate, graphite ink, riboflavin-functionalized activated carbon, and a deep eutectic solvent electrolyte, offering a non-toxic, sustainable solution for low-power wireless sensor applications. Deep eutectic solvent ; Supercapacitor ; Electrolyte ; Electrode ; Eutectic system ; Graphite ; Carbon fibers ; Battery (electricity) Supercapacitor Materials and Fabrication ; Carbon and Quantum Dots Applications ; Carbon Nanotubes in Composites
Authors: Gustavo de Gusmão Celestino | Andreza Miranda Barata da Silva | Eberlanny Moraes Rolim | Joel dos Santos Batista | Dominique Fernandes de Moura do Carmo | Thomas Döring | Eduardo G.C. Neiva | Paulo José Sousa Maia
Source: Brazilian Journal of Development (article, 2025-02-04)
Field: Chemistry — Analytical Chemistry

Removal of rhodamine B and methylene blue using waste fibers from Inga edulis Mart as bioadsorbent: kinetics and thermodynamic parameters In the present work, the modification, characterization, and application of the adsorption tests of the Ingá edulis Mart peels were carried out in the adsorption in natura and modified form in basic medium (NaOH 3 mol L-1) to perform the adsorption of methylene blue dyes and rhodamine b. This material was applied for the study of adsorption in aqueous medium where the best conditions of the main parameters were found. The influence of several factors, such as solution pH, contact time, adsorbent mass, and dye concentration, was studied by batch experiments. The optimum contact time to reach equilibrium was 20 min for Ingá edulis Mart in natura and modified in methylene blue and 40 min for Ingá edulis Mart in natura and modified in rhodamine b. The optimal adsorbent dose was 200 mg for both dyes. The study of the adsorption kinetics revealed that the adsorption process was better adjusted to the pseudo-first order kinetic model and the Langmuir isotherm in all configurations of the studied systems. The results obtained show that the biosorbents from the bark of Ingá edulis Mart can be applied as a low-cost adsorbent for removing methylene blue and rhodamine b from effluents, since it showed good adsorption capacity with the maximum adsorption value Qm of 25,62 mg g-1 for Rb and 30,47 mg g-1 for MB for adsorption after modification. Thermodynamic studies in this research showed a spontaneous, favorable, and endothermic adsorption. Methylene blue ; Rhodamine B ; Kinetics ; Inga ; Chemistry ; Nuclear chemistry ; Materials science ; Chemical engineering ; Organic chemistry ; Botany ; Biology ; Physics ; Photocatalysis ; Engineering Dye analysis and toxicity
Authors: Jesús Roberto Villegas-Méndez | María Maura Téllez Rosas | Rafael Aguirre Flores | Felipe Ávalos Belmontes | Francisco Javier Fernández González | Mario Hoyos
Source: Applied Sciences (article, 2025-11-04)
Field: Materials Science — Biomaterials

Chitosan Enhanced Polymers for Active Packaging: Intelligent Moisture Regulation and Non-Invasive Assessment This work presents the non-destructive assessment of polymeric composites based on synthetic matrices low-density polyethylene (LDPE) and polystyrene (PS) enhanced with chitosan (CS) biopolymer for use in active packaging systems for moisture control. Composites were prepared by incorporating CS at different contents (1, 3 and 5 phr) into LDPE and PS matrices. To evaluate the structural and thermal alterations induced by biopolymer loading, the materials were characterized using scanning electron microscopy (SEM), X-ray diffraction (XRD), and differential scanning calorimetry (DSC). The composites’ water-regulating properties—specifically, moisture absorption, retention, diffusion, and water vapor transmission rate—were quantitively tracked. Furthermore, the mechanical integrity of both dried and water-exposed systems was assessed via Shore D hardness testing. The results reveal a direct correlation between CS concentrations and enhanced hydrophilic behavior and water absorption, primarily attributed to the polar hydroxyl and amine groups within its molecular structure. The composites maintained adequate mechanical strength even after water exposure, confirming their structural stability for practical applications. This study demonstrates that the incorporation of CS into non-polar synthetic matrices significantly improves water affinity without requiring chemical compatibilizers, representing a cost-effective route to develop responsive packaging. The promise of these composites as responsive materials for real-time environmental interaction is highlighted by the successful non-destructive monitoring of their performance. This research establishes the feasibility and efficacy of non-destructive monitoring techniques in developing active packaging technologies, accelerating the progress of polymer-based systems with integrated and tunable moisture regulation capabilities. Biopolymer ; Differential scanning calorimetry ; Chitosan ; Moisture ; Polymer ; Thermal stability ; Low-density polyethylene ; Active packaging Nanocomposite Films for Food Packaging ; Natural Fiber Reinforced Composites ; Advanced Cellulose Research Studies