jablonkagroup/rise_ai_scientists huggingface dataset:
Authors: Mladen Bugarčić | Aleksandar Jovanović | Jelena Petrović | Milica Mišić | Miroslav Sokić | Milan Milivojević
Source: Metallurgical and Materials Data (review, 2024-12-02)
Field: Materials Science — Biomaterials

Decadal Trends in Biopolymer Production and Utilization: A Comprehensive Review This article provides a comprehensive review of recent advancements in biopolymer technology, focusing on their environmental and economic impact across various industries. Key biopolymers discussed include cellulose, lignin, starch, algal polysaccharides, and protein-based polymers such as whey and casein, alongside essential biopolymers like chitin, chitosan, pectin, guar gum, xanthan gum, natural polyesters, and polyamides. These biopolymers have experienced rising demand due to their renewable nature and biodegradability, supporting the shift toward sustainable materials in sectors such as food technology, biomedical applications, and eco-friendly packaging. By synthesizing insights from industry reports, market trends, and scientific studies, the review highlights the growth trajectory, environmental benefits, and economic viability of biopolymers. The analysis emphasizes how these materials contribute to reducing fossil fuel dependency and waste, positioning them as critical components of the green economy. Furthermore, it addresses challenges such as production costs and scalability, advocating for ongoing research and technological development to maximize their potential. This work underscores the increasingly vital role of biopolymers in sustainable development and sets the stage for further innovation in the field. Biopolymer ; Production (economics) ; Biochemical engineering ; Environmental science ; Engineering ; Materials science ; Economics ; Microeconomics ; Polymer biodegradable polymer synthesis and properties
Authors: George Gorgolis | Francesca Tunioli | Georgios Paterakis | Manuela Melucci | Nikolaos Koutroumanis | Labrini Sygellou | Mohammad Sajad Sorayani Bafqi | Burcu Saner Okan | Costas Galiotis
Source: RSC Advances (article, 2024-01-01)
Field: Materials Science — Materials Chemistry

Enhanced removal of emerging contaminants from tap water by developing graphene oxide and nanoplatelet hybrid aerogels The removal of emerging contaminants (ECs) from drinking water is a current challenge of global concern. Graphene-based sorbents are attracting increasing interest in this field owing to the chemical versatility of graphene-based materials, their commercial availability and processability in various 3D structures. Herein, for the first time, graphene aerogels (GAs) are reported based on the synergy of graphene oxide (GO) and graphene nanoplatelets (GNPs) derived from waste tire and their use as a sorbent for a mixture of ECs in tap water. Reduction of GO up to 52.1% (O/C = 0.092) was demonstrated through X-ray photoelectron spectroscopy, whereas no changes in the GNP structure during aerogel synthesis were demonstrated with comprehensive spectroscopic and microscopic characterisation. Adsorption of a selection of ECs in a mixture from tap water was tested under flow conditions by inserting the aerogels into filtration cartridges and filtering tap water spiked with the mixture of ECs. Remarkably, the GO + GNP aerogel showed an increase in adsorption capacity of about 2.3 times that of the rGO aerogel owing to the higher obtained surface area, 27 instead of 16 m<sup>2</sup> g<sup>-1</sup>, and the resultant more-reduced structure. Graphene ; Tap water ; Contamination ; Oxide ; Contaminated water ; Nanotechnology ; Water contamination ; Environmental chemistry ; Materials science ; Environmental science ; Chemistry ; Environmental engineering ; Metallurgy ; Ecology Carbon and Quantum Dots Applications ; Advanced Photocatalysis Techniques
Authors: António Aguiar | Lucas P. Marcelino | António Mariquito | Carla L. Simões | Ricardo Simões | Isabel Pinho | Ana C. Marques
Source: ACS Applied Polymer Materials (article, 2024-05-02)
Field: Materials Science — Biomaterials

Microcapsules of Poly(butylene adipate-<i>co</i>-terephthalate) (PBAT) Loaded with Aliphatic Isocyanates for Adhesive Applications This work introduces the encapsulation of hexamethylene diisocyanate derivatives (HDI, TriHDI, and PHDI) with the biodegradable polymer poly(butylene adipate-<i>co</i>-terephthalate) (PBAT) through a solvent evaporation method. These microcapsules (MCs) were then employed in adhesive formulations for footwear. Moreover, MCs containing PHDI were produced in a closed vessel, demonstrating the potential for recovering and reusing organic solvents for the first time. The MCs were achieved with an isocyanate payload reaching up to 68 wt %, displaying a spherical shape, a core-shell structure, and thin walls without holes or cracks. The application of MCs as cross-linking agents for adhesives was evaluated following industry standards. The adhesives' strength surpassed the minimum requirement by a significant margin. Creep tests demonstrated that the formulation with MCs exhibits superior thermostability. Furthermore, the formulation with MCs-PHDI presented the best results reported to date for this type of system, as no displacement was observed in the bonded substrates. Environmental assessment indicates that adhesives with MCs have higher global warming potential (+16.2%) and energy consumption (+10.8%) than the standard commercial adhesives, but under alternative realistic scenarios, the differences can be insignificant. Therefore, adhesive formulations incorporating MCs promise to be on par with traditional adhesive systems regarding environmental impacts while providing benefits such as improved and safe handling of isocyanates and excellent bonding effectiveness. Adhesive ; Adipate ; Materials science ; Isocyanate ; Polyester ; Composite material ; Polymer ; Ethylene glycol ; Polymer chemistry ; Chemical engineering ; Polyurethane biodegradable polymer synthesis and properties ; Polymer crystallization and properties ; Advanced Sensor and Energy Harvesting Materials
Authors: Benjamín O. Armijo-Galdames | Joanna C. Sadler
Source: ACS Sustainable Chemistry & Engineering (article, 2024-05-05)
Field: Materials Science — Biomaterials

One-Pot Biosynthesis of Acetone from Waste Poly(hydroxybutyrate) The plastic waste crisis is catalyzing change across the plastics life cycle. Central to this is increased production and application of bioplastics and biodegradable plastics. In particular, poly(hydroxybutyrate) (PHB) is a biodegradable bioplastic that can be produced from various renewable and waste feedstocks and is a promising alternative to some petrochemical-derived and non-biodegradable plastics. Despite its advantages, PHB biodegradation depends on environmental conditions, and the effects of degradation into microplastics, oligomers, and the 3-hydroxybutyrate (3-HB) monomer on soil microbiomes are unknown. We hypothesized that the ease of PHB biodegradation renders this next-generation plastic an ideal feedstock for microbial recycling into platform chemicals currently produced from fossil fuels. To demonstrate this, we report the one-pot degradation and recycling of PHB into acetone using a single strain of engineered <i>Escherichia coli</i>. Following strain development and initial bioprocess optimization, we report maximum titers of 123 mM acetone (7 g/L) from commercial PHB granules after 24 h fermentation at 30 °C. We further report biorecycling of an authentic sample of post-consumer PHB waste at a preparative scale. This is the first demonstration of biological recycling of PHB into a second-generation chemical, and it demonstrates next-generation plastic waste as a novel feedstock for the circular bioeconomy. Bioplastic ; Biodegradation ; Raw material ; Biodegradable plastic ; Polyhydroxyalkanoates ; Petrochemical ; Acetone ; Waste management ; Cupriavidus necator ; Bioprocess ; Polyhydroxybutyrate ; Pulp and paper industry ; Chemistry ; Organic chemistry ; Chemical engineering ; Bacteria biodegradable polymer synthesis and properties ; Microplastics and Plastic Pollution ; Microbial Metabolic Engineering and Bioproduction
Authors: Amira Ben Gouider Trabelsi | Mohamed Rabia | Fatemah H. Alkallas | F. V. Kusmartsev
Source: Scientific Reports (article, 2024-11-12)
Field: Materials Science — Polymers and Plastics

Polypyrrole-bismuth tungstate/polypyrrole core-shell for optoelectronic devices exhibiting Schottky photodiode behavior A polypyrrole-bismuth tungstate (Ppy-Bi<sub>2</sub>WO<sub>6</sub>) core-shell nanocomposite (n-type material) has been developed on a layered Ppy (p-type) base as an efficient light-capturing material exhibiting photodiode behavior. This device demonstrates promising sensitivity for light sensing and captures across a broad spectral range, from near IR to UV. The Bi<sub>2</sub>WO<sub>6</sub>/Ppy nanocomposite boasts an optimal bandgap of 2.0 eV, compared to 3.4 eV for Ppy and 2.5 eV for Bi<sub>2</sub>WO<sub>6</sub>. The crystalline size of the core-shell composite is approximately 21 nm, emphasizing its photon absorption capabilities. The composite particles, around 100 nm in length, feature a highly porous morphology that effectively traps incident photons. The performance of this optoelectronic device is evaluated using current density (J) measurements under light (J<sub>ph</sub>) and dark (J<sub>o</sub>) conditions. In darkness, the n-p type semiconductor exhibits limited current with a Jo of -0.22 mA cm<sup>-2</sup> at 2.0 V. When exposed to white light, the Ppy- Bi<sub>2</sub>WO<sub>6</sub>/Ppy device generates hot electrons, achieving a J<sub>ph</sub> value of 1.1 mA/cm<sup>-2</sup> at 2.0 V. It shows a superior responsivity (R) of 6.6 mA/W at 340 nm, gradually decreasing to 6.3 mA/W at 440 nm and 4.2 mA/W at 540 nm, indicating high sensitivity across the UV-Vis spectrum. At 730 nm, the R-value is 2.6 mA/W, highlighting its sensitivity in the near IR region. Additionally, at 340 nm, the device achieves a detectivity (D) value of 0.15 × 10¹⁰ Jones, which decreases with longer wavelengths to 0.14 × 10¹⁰ Jones at 440 nm, 0.9 × 10⁹ Jones at 540 nm, and 0.63 × 10⁹ Jones at 730 nm. With its great stability, low cost, easy fabrication, and potential for mass production, this optoelectronic light sensor and photodiode device holds significant promise for industrial applications as a highly effective optoelectronic device. Polypyrrole ; Tungstate ; Photodiode ; Bismuth ; Materials science ; Optoelectronics ; Core (optical fiber) ; Schottky barrier ; Schottky diode ; Composite material ; Polymerization ; Diode Conducting polymers and applications ; Transition Metal Oxide Nanomaterials ; Semiconductor materials and interfaces
Authors: Jinjian Wei | Hong Xu | Yating Sun | Yingchun Liu | Ran Yan | Yuqin Chen | Zhide Zhang
Source: Molecules (review, 2024-09-02)
Field: Materials Science — Biomaterials

Magnetite Nanoparticle Assemblies and Their Biological Applications: A Review Magnetite nanoparticles (Fe<sub>3</sub>O<sub>4</sub> NPs) have garnered significant attention over the past twenty years, primarily due to their superparamagnetic properties. These properties allow the NPs to respond to external magnetic fields, making them particularly useful in various technological applications. One of the most fascinating aspects of Fe<sub>3</sub>O<sub>4</sub> NPs is their ability to self-assemble into complex structures. Research over this period has focused heavily on how these nanoparticles can be organized into a variety of superstructures, classified by their dimensionality-namely one-dimensional (1D), two-dimensional (2D), and three-dimensional (3D) configurations. Despite a wealth of studies, the literature lacks a systematic review that synthesizes these findings. This review aims to fill that gap by providing a thorough overview of the recent progress made in the fabrication and organization of Fe<sub>3</sub>O<sub>4</sub> NP assemblies via a bottom-up self-assembly approach. This methodology enables the controlled construction of assemblies at the nanoscale, which can lead to distinctive functionalities compared to their individual counterparts. Furthermore, the review explores the diverse applications stemming from these nanoparticle assemblies, particularly emphasizing their contributions to important areas such as imaging, drug delivery, and the diagnosis and treatment of cancer. Nanoparticle ; Magnetite Nanoparticles ; Magnetite ; Nanotechnology ; Materials science ; Magnetic nanoparticles ; Chemistry ; Metallurgy Nanoparticle-Based Drug Delivery ; Characterization and Applications of Magnetic Nanoparticles ; Iron oxide chemistry and applications
Authors: Ke Ran | Fanlin Zeng | Lei Jin | Stefan Baumann | Wilhelm Albert Meulenberg | Joachim Mayer
Source: Nature Communications (article, 2024-09-17)
Field: Materials Science — Materials Chemistry

in situ observation of reversible phase transitions in Gd-doped ceria driven by electron beam irradiation Ceria-based oxides are widely utilized in diverse energy-related applications, with attractive functionalities arising from a defective structure due to the formation of mobile oxygen vacancies ( <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msubsup><mml:mrow><mml:mi>V</mml:mi></mml:mrow> <mml:mrow><mml:mi>O</mml:mi></mml:mrow> <mml:mrow><mml:mo>⋅</mml:mo> <mml:mo>⋅</mml:mo></mml:mrow> </mml:msubsup> </mml:math> ). Notwithstanding its significance, behaviors of the defective structure and <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msubsup><mml:mrow><mml:mi>V</mml:mi></mml:mrow> <mml:mrow><mml:mi>O</mml:mi></mml:mrow> <mml:mrow><mml:mo>⋅</mml:mo> <mml:mo>⋅</mml:mo></mml:mrow> </mml:msubsup> </mml:math> in response to external stimuli remain incompletely explored. Taking the Gd-doped ceria (Ce<sub>0.88</sub>Gd<sub>0.12</sub>O<sub>2-δ</sub>) as a model system and leveraging state-of-the-art transmission electron microscopy techniques, reversible phase transitions associated with massive <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msubsup><mml:mrow><mml:mi>V</mml:mi></mml:mrow> <mml:mrow><mml:mi>O</mml:mi></mml:mrow> <mml:mrow><mml:mo>⋅</mml:mo> <mml:mo>⋅</mml:mo></mml:mrow> </mml:msubsup> </mml:math> rearrangement are stimulated and visualized in situ with sub-Å resolution. Electron dose rate is identified as a pivotal factor in modulating the phase transition, and both the <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msubsup><mml:mrow><mml:mi>V</mml:mi></mml:mrow> <mml:mrow><mml:mi>O</mml:mi></mml:mrow> <mml:mrow><mml:mo>⋅</mml:mo> <mml:mo>⋅</mml:mo></mml:mrow> </mml:msubsup> </mml:math> concentration and the orientation of the newly formed phase can be altered via electron beam. Our results provide indispensable insights for understanding and refining the microscopic pathways of phase transition as well as defect engineering, and could be applied to other similar functional oxides. Algorithm ; Materials science ; Computer science Catalytic Processes in Materials Science ; Electronic and Structural Properties of Oxides ; Advancements in Solid Oxide Fuel Cells
Authors: Joaquin Llacer‐Wintle | Lukas Hertle | S. J. Ziegler | Eva Pellicer | Alejandro G. Roca | J. Nogués | Josep Puigmartí‐Luis | Bradley J. Nelson | Xiangzhong Chen | Salvador Pané
Source: Advanced Functional Materials (article, 2024-05-15)
Field: Materials Science — Biomaterials

A Simple In Situ Marker Guiding Shape‐Controlled Synthesis of Iron Oxide Nanoparticles Abstract Thermal decomposition of iron oleate is a simple and widespread method for synthesizing monodispersed iron oxide nanoparticles (IONPs) with well‐defined morphology. However, the complexity of the underlying mechanism makes this method rather sensitive to variations in experimental conditions, and the lack of simple techniques to monitor the reaction progress in situ usually results in poor reproducibility and time‐consuming optimizations. Here, a simple, robust, and versatile in situ marker to monitor particle formation based on a sudden change in the temperature during reflux is reported. A linear relationship between the onset of particle formation and the concentration of surfactants is unveiled, corroborating a ‘chemically activated’ burst nucleation mechanism. Using this linear relationship as a guide, highly uniform spherical, cubic, and star‐shaped particles between 12 and 30 nm can be obtained. This temperature marker and the derived linear relationship not only deepen the understanding of the reaction process, but also provide a powerful tool for the straightforward optimization of IONPs. Materials science ; In situ ; Simple (philosophy) ; Nanoparticle ; Nanotechnology ; Iron oxide nanoparticles ; Iron oxide ; Chemical engineering ; Metallurgy ; Organic chemistry Nanoparticle-Based Drug Delivery ; Iron oxide chemistry and applications ; Characterization and Applications of Magnetic Nanoparticles
Authors: Ling Meng | Ekaterina V. Pokochueva | Zixuan Chen | Alexey Fedorov | Francesc Viñes | Francesc Illas | Igor V. Koptyug
Source: ACS Catalysis (article, 2024-08-06)
Field: Materials Science — Materials Chemistry

Contrasting Metallic (Rh<sup>0</sup>) and Carbidic (2D-Mo<sub>2</sub>C MXene) Surfaces in Olefin Hydrogenation Provides Insights on the Origin of the Pairwise Hydrogen Addition Kinetic studies are vital for gathering mechanistic insights into heterogeneously catalyzed hydrogenation of unsaturated organic compounds (olefins), where the Horiuti-Polanyi mechanism is ubiquitous on metal catalysts. While this mechanism envisions nonpairwise H<sub>2</sub> addition due to the rapid scrambling of surface hydride (H*) species, a pairwise H<sub>2</sub> addition is experimentally encountered, rationalized here based on density functional theory (DFT) simulations for the ethene (C<sub>2</sub>H<sub>4</sub>) hydrogenation catalyzed by two-dimensional (2D) MXene Mo<sub>2</sub>C(0001) surface and compared to Rh(111) surface. Results show that ethyl (C<sub>2</sub>H<sub>5</sub>*) hydrogenation is the rate-determining step (RDS) on Mo<sub>2</sub>C(0001), yet C<sub>2</sub>H<sub>5</sub>* formation is the RDS on Rh(111), which features a higher reaction rate and contribution from pairwise H<sub>2</sub> addition compared to 2D-Mo<sub>2</sub>C(0001). This qualitatively agrees with the experimental results for propene hydrogenation with parahydrogen over 2D-Mo<sub>2</sub>C<sub>1-<i>x</i></sub> MXene and Rh/TiO<sub>2</sub>. However, DFT results imply that pairwise selectivity should be negligible owing to the facile H* diffusion on both surfaces, not affected by H* nor C<sub>2</sub>H<sub>4</sub>* coverages. DFT results also rule out the Eley-Rideal mechanism appreciably contributing to pairwise addition. The measurable contribution of the pairwise hydrogenation pathway operating concurrently with the dominant nonpairwise one is proposed to be due to the dynamic site blocking at higher adsorbate coverages or another mechanism that would drastically limit the diffusion of H* adatoms. Catalysis ; Olefin fiber ; Hydrogen ; Metal ; Chemistry ; Ruthenium ; Materials science ; Organic chemistry MXene and MAX Phase Materials ; Nanomaterials for catalytic reactions ; Hydrogen Storage and Materials
Authors: Goshen David Miteu | Olayemi Ojeokun | Irenosen Addeh | Afolabi Ayomide | Temidayo Olayinka | Stuart James | Oluwatobi Ibukun Adeyemo | Elohozino Oghale Benneth
Source: Modern Agriculture (article, 2024-12-01)
Field: Materials Science — Materials Chemistry

Scaling up Sustainable Agriculture and Food Security With Nanoscience and Technology ABSTRACT Agriculture has been the primary source of food for humanity since time immemorial. With the ever‐growing global population and the rising demand for food supplies, there has been a transition from traditional agricultural practices to more advanced methods. Nanoscience and technology represent a cutting‐edge approach that offers numerous benefits. This review narrates the importance of incorporating nanoscience and technology into agriculture to manipulate matters for sustainable agriculture and food security. This study will also serve as a valuable resource for agriculturalists in developing countries, providing them with a better understanding of the potential of nanoscience and technology in agriculture, ultimately contributing to improved food production and global food security. Food security ; Agriculture ; Scaling ; Sustainable agriculture ; Business ; Environmental science ; Nanotechnology ; Geography ; Materials science ; Mathematics Nanoparticles: synthesis and applications
Authors: Mona H. Mohamed | Islam Elzeny | Joshua Samuel | Yimeng Huang | Ahmed Helal | Mitchell Galanek | Wenqian Xu | So Yeon Kim | Tony Pham | Lenore Miller | Adam Hogan | Brian Space | Ju Li | Sameh K. Elsaidi
Source: ACS Applied Materials & Interfaces (article, 2024-04-22)
Field: Chemistry — Inorganic Chemistry

Trailblazing Kr/Xe Separation: The Birth of the First Kr-Selective Material Efficient separation of Kr from Kr/Xe mixtures is pivotal in nuclear waste management and dark matter research. Thus far, scientists have encountered a formidable challenge: the absence of a material with the ability to selectively adsorb Kr over Xe at room temperature. This study presents a groundbreaking transformation of the renowned metal-organic framework (MOF) CuBTC, previously acknowledged for its Xe adsorption affinity, into an unparalleled Kr-selective adsorbent. This achievement stems from an innovative densification approach involving systematic compression of the MOF, where the crystal size, interparticle interaction, defects, and evacuation conditions are synergistically modulated. The resultant densified CuBTC phase exhibits exceptional mechanical resilience, radiation tolerance, and notably an unprecedented selectivity for Kr over Xe at room temperature. Simulation and experimental kinetic diffusion studies confirm reduced gas diffusion in the densified MOF, attributed to its small pore window and minimal interparticle voids. The lighter Kr element demonstrates facile surface passage and higher diffusivity within the material, while the heavier Xe encounters increased difficulty entering the material and lower diffusivity. This Kr-selective MOF not only represents a significant breakthrough in Kr separation but also demonstrates remarkable processability and scalability to kilogram levels. The findings presented herein underscore the transformative potential of engineered MOFs in addressing complex challenges, heralding a new era of Kr separation technologies. Materials science ; Separation (statistics) ; Krypton ; Atomic physics ; Xenon ; Physics ; Computer science Inorganic Fluorides and Related Compounds ; Molten salt chemistry and electrochemical processes ; Superconducting Materials and Applications