jablonkagroup/rise_ai_scientists huggingface dataset:
Authors: Marwa M. Sayed | Islam S. Abd El-Hamid | Haitham M. El‐Bery | Mostafa Farrag | Kamal I. Aly
Source: Environmental Sciences Europe (article, 2024-04-01)
Field: Materials Science — Polymers and Plastics

Unveiling the potential of a functionalized pyrrole-based polymer for efficient cadmium ion removal from wastewater: synthesis, characterization, and performance evaluation Abstract Cadmium ion Cd 2+ contamination is a major environmental issue caused by industry. Polyarylidene N-hexane pyrrole (PAP h ) and crosslinked polyarylidene N-phenyl pyrrole (PAP D ) were prepared from the previously synthesized polymer (polyarylidene ketone (PAK)) by using the advantage of repeating carbonyl groups at the 1,4 position and reacting it with hexylamine and P-phenylenediamine via the Paal–Knorr reaction. Various methods were used to characterize polymers, such as FT-IR spectroscopy, X-ray diffraction (XRD), thermogravimetry analysis (TGA), UV–visible spectroscopy, scanning electron microscope (SEM), zeta potential, and surface area measurements (BET), revealing successful fabrication, good thermostability, and well-defined microporous structures useful for Cd 2+ adsorption. Optimal adsorption capacities of 55.8 mg g −1 for PAP h and 86.95 mg g −1 for PAP D indicate a significant enhancement in Cd 2+ adsorption via their microporous structures, Cd 2+ adsorption was also investigated in terms of contact time, initial concentration, and pH. A total input concentration of 30 ppm Cd ions, may yield an 84.3% removal rate for PAP h and an 89.2% removal rate for PAP D . The experimental results were well-fit by many models, including pseudo-second-order kinetics (PSO), Freundlich isotherms, intraparticle diffusion, and Langmuir. The varying adsorption performances of the two polymers studied, (PAP h ) and (PAP D ), were found to be derived from their respective chemical structures, which include various functional groups, according to studies conducted on Cd 2+ in an aqueous solution. Cd 2+ adsorption on polymers was considered physisorption; π –cation interactions and surface complexation played significant roles in adsorption. The PAP polymers may be considered promising substitutes and innovative adsorbents to remove Cd 2+ ions from a water solution. Cadmium ; Wastewater ; Characterization (materials science) ; Pyrrole ; Environmental chemistry ; Chemistry ; Environmental science ; Materials science ; Nanotechnology ; Environmental engineering ; Organic chemistry Conducting polymers and applications ; Electrochemical Analysis and Applications ; Extraction and Separation Processes
Authors: Divya Yadav | Karmjeet Nain | Divya Dhillayan | R. Mittal | Shafila Bansal | Santosh Bhukal
Source: Environmental Science Advances (article, 2024-01-01)
Field: Chemistry — Organic Chemistry

Hydrophobic ionic liquid (IL)-based magnetic adsorbents: the way forward to remediate water pollution In this investigation, bare and hydrophobic IL-modified FeO nanoparticles (NPs) have been synthesized using microwave irradiation. Ionic liquid ; Adsorption ; Pollution ; Chemical engineering ; Microwave irradiation ; Nanoparticle ; Magnetic nanoparticles ; Chemistry ; Materials science ; Environmental chemistry ; Nanotechnology ; Organic chemistry ; Catalysis ; Ecology ; Engineering Nanomaterials for catalytic reactions ; Catalytic Processes in Materials Science ; Adsorption and biosorption for pollutant removal
Authors: Mohamed Hosny | Mahmoud F. Mubarak | H.S. El-Sheshtawy | Rasha Hosny
Source: Scientific Reports (article, 2024-04-10)
Field: Materials Science — Materials Chemistry

RETRACTED ARTICLE: Break oily water emulsion during petroleum enhancing production processes using green approach for the synthesis of SnCuO@FeO nanocomposite from microorganisms The aim of this work was to synthesize a green nanoparticle SnCuO@FeO nanocomposite core-shell to break oily water emulsions during petroleum-enhancing production processes as an alternative to chemical and physical processes. In this study, eight bacterial isolates (MHB1-MHB8) have been isolated from tree leaves, giant reeds, and soil samples. The investigation involved testing bacterial isolates for their ability to make FeO nanoparticles and choosing the best producers. The selected isolate (MHB5) was identified by amplification and sequencing of the 16S rRNA gene as Bacillus paramycoides strain OQ878685. MHB5 produced the FeO nanoparticles with the smallest particle size (78.7 nm) using DLS. XRD, FTIR, and TEM were used to characterize the biosynthesized nanoparticles. The jar experiment used SnCuO@FeO with different ratios of Sn to CuO (1:1, 2:1, and 3:1) to study the effect of oil concentration, retention time, and temperature. The most effective performance was observed with a 1:1 ratio of Sn to CuO, achieving an 85% separation efficiency at a concentration of 5 mg/L, for a duration of 5 min, and at a temperature of 373 K. Analysis using kinetic models indicates that the adsorption process can be accurately described by both the pseudo-first-order and pseudo-second-order models. This suggests that the adsorption mechanism likely involves a combination of film diffusion and intraparticle diffusion. Regarding the adsorption isotherm, the Langmuir model provides a strong fit for the data, while the D-R model indicates that physical interactions primarily govern the adsorption mechanism. Thermodynamic analysis reveals a ∆H value of 18.62 kJ/mol, indicating an exothermic adsorption process. This suggests that the adsorption is a favorable process, as energy is released during the process. Finally, the synthesized green SnCuO@FeO nanocomposite has potential for use in advanced applications in the oil and gas industry to help the industry meet regulatory compliance, lower operation costs, reduce environmental impact, and enhance production efficiency. Adsorption ; Emulsion ; Diffusion ; Chemical engineering ; Nanocomposite ; Nanoparticle ; Fourier transform infrared spectroscopy ; Materials science ; Langmuir adsorption model ; Particle size ; Chemistry ; Nanotechnology ; Organic chemistry ; Thermodynamics Nanoparticles: synthesis and applications ; Minerals Flotation and Separation Techniques ; Enhanced Oil Recovery Techniques
Authors: Yi Chen | Leon Mishnaevsky
Source: Advanced Engineering Materials (article, 2024-04-16)
Field: Materials Science — General Materials Science

Modeling the Solvolysis of Composite Materials of Wind Turbine Blades A computational model of the depolymerization of composites during solvolysis of wind turbine blades is developed. The model is based on a phenomenological approach, describing the dissolution of an epoxy matrix as a local phase transition influenced by temperature, solvent diffusion, and local microstructures. The model is implemented in the finite element code Abaqus, using the user‐defined field and heat flux subroutines. Parametric studies are carried out to study the influence of defects and heterogeneities on the depolymerization of composite materials. The results show that variations of the solvent diffusivity in the vicinity of fiber/matrix lead to nonhomogeneity of depolymerization, and smaller diffusivity may explain matrix residues remaining on the fibers. Fiber volume density and distribution influence the polymer dissolution rate because the resistance to solvent diffusion arises between fibers. Further, voids in the polymer may lead to a local acceleration of the polymer dissolution. This work also looks into the contributions of diffusion and reaction to depolymerization, and the former dominates. The rate and homogeneity of depolymerization, therefore, depend significantly on the manufacturing quality of composites. Solvolysis ; Turbine blade ; Materials science ; Composite number ; Turbine ; Composite material ; Mechanical engineering ; Engineering ; Hydrolysis ; Organic chemistry ; Chemistry Material Properties and Applications ; Fiber-reinforced polymer composites ; Advanced Theoretical and Applied Studies in Material Sciences and Geometry
Authors: M. Christina Nilavu | A. Santhana Krishna Kumar | Himanshu Aggarwal | N. Rajesh
Source: Materials Advances (article, 2024-12-11)
Field: Materials Science — Materials Chemistry

Poly(ethyleneimine)-exfoliated g-C<sub>3</sub>N<sub>4</sub> nanosheets implanted in alginate beads and their application towards adsorptive desulfurization Poly(ethyleneimine) exfoliated g-C 3 N 4 nanosheets embedded in calcium alginate beads with an ultimate tensile strength of 3500 kPa for desulfurization of fuel with a high adsorption capacity of 183.03 mg g −1 . Exfoliation joint ; Ethyleneimine ; Context (archaeology) ; Flue-gas desulfurization ; Materials science ; Nanosheet ; Chemical engineering ; Nanotechnology ; Waste management ; Composite material ; Engineering ; Polymer ; Geology MXene and MAX Phase Materials ; Advanced Photocatalysis Techniques ; Gas Sensing Nanomaterials and Sensors
Authors: Xiajun Zhang | Youchao Xia | Zhou Wang
Source: PLoS ONE (article, 2024-10-09)
Field: Chemistry — Analytical Chemistry

Adsorption of Congo red on magnetic cobalt-manganese ferrite nanoparticles: Adsorption kinetic, isotherm, thermodynamics, and electrochemistry Magnetic Co0.5Mn0.5Fe2O4 nanoparticles were successfully prepared via the combustion and calcination process, with an average particle diameter of 31.5 nm and a saturation magnetization of 25.25 emu·g-1, they were employed to adsorbe Congo red (CR) from wastewater, the Pseudo-second-order kinetic and Freundlich isotherm were consistent with the adsorption data, indicating that their adsorption was a multilayer chemisorption process, the thermodynamic investigation showed that the adsorption was a favored exothermic process. The ionic strength of Cl- in CR solution had no obvious effect on the adsorption efficiency of Co0.5Mn0.5Fe2O4 nanoparticles, and the maximum adsorbance was 58.3 mg·g-1 at pH 2, decreasing as the pH of the CR solutions increased from 2 to 12. The ion leaching experiment and XRD demonstrated that Co0.5Mn0.5Fe2O4 nanoparticles had excellent stability, and the relative removal rate was 93.85% of the first time after 7 cycles. Cyclic voltammetry and electrochemical impedance spectroscopy demonstrated that CR was adsorbed onto Co0.5Mn0.5Fe2O4 nanoparticles, and the electrical conductivity of Co0.5Mn0.5Fe2O4 nanoparticles decreased after adsorption of CR. Magnetic Co0.5Mn0.5Fe2O4 nanoparticles displayed a promising application in wastewater treatment. Adsorption ; Manganese ; Nanoparticle ; Thermodynamics ; Cobalt ferrite ; Materials science ; Cobalt ; Electrochemistry ; Chemistry ; Sorption isotherm ; Kinetic energy ; Chemical engineering ; Physical chemistry ; Metallurgy ; Nanotechnology ; Electrode ; Physics Dye analysis and toxicity ; Nanomaterials for catalytic reactions ; Electrochemical Analysis and Applications
Authors: Syed Noeman Taqui | Usman Taqui Syed | Rayees Afzal Mir | Akheel Ahmed Syed | Shareefraza J. Ukkund | H. N. Deepakumari | Abdullah I. Al‐Mansour | Shamshad Alam | Parveen Berwal | Hasan Sh. Majdi
Source: RSC Advances (article, 2024-01-01)
Field: Chemistry — Analytical Chemistry

A practical approach to demonstrate the circular economy in remediation of textile dyes using nutraceutical industrial spent We used Nutraceutical Industrial Coriander Seed Spent (NICSS), a readily available, cheap, eco-friendly, and ready-to-use material, as an innovative adsorbent for the bioremediation of a bisazo Acid Red 119 (AR 119) dye, which is likely a mutagen from textile industrial effluents (TIE). A laboratory-scale experiment was tailored to demonstrate the framework of the circular economy (CE) in the remediation of textile dyes using Nutraceutical Industrial Spent to align with the principles of sustainability and valorization. An experimental <i>q</i> <sub>e</sub> value of 97.00 mg g<sup>-1</sup> was obtained. For the practicality and effectiveness of the method, a two-level fractional factorial experimental design (FFED) was employed to determine variables that influence the adsorption capacity of NICSS. At optimal settings (pH of 1.4, adsorbent dosage of 6.000 g L<sup>-1</sup>, adsorbent particle size of 96 μm, initial dye concentration of 599 mg L<sup>-1</sup>, adsorption duration of 173 min, orbital shaking speed of 165 rpm, and temperature of 35 °C), the maximum adsorption efficiency achieved through statistical optimization was 614 mg g<sup>-1</sup>. Six factors influencing the adsorption process were examined experimentally and were considered important for commercialization. Three orders of magnitude were applied to the identified variables in scaling experiments. Adsorption-equilibrium data were analyzed using nine isotherm models. The best fit was discovered to be the Vieth-Sladek adsorption isotherm model. The suitable mechanism for the overall rate of the adsorption process was a pseudo-second-order reaction: mass-transfer mechanistic studies were predicted to predominate over the diffusion process. NICSS was characterized using SEM and FTIR spectroscopy. Utilizing plastic trash, the dye-adsorbed NICSS that was recovered as "sludge" was utilized as a reinforcing material to create composites. Dye-adsorbed NICSS thermoplastic and thermoset composites were studied and compared with NICSS composites in terms of their physicomechanical and chemical properties. Nutraceutical ; Bioremediation ; Circular economy ; Environmental remediation ; Textile ; Pulp and paper industry ; Adsorption ; Chemistry ; Waste management ; Food science ; Biotechnology ; Materials science ; Organic chemistry ; Engineering ; Biology ; Contamination ; Composite material Dye analysis and toxicity ; Adsorption and biosorption for pollutant removal
Authors: Rinky Ghosh | Xiaoying Zhao | Yael Vodovotz
Source: Polymers (article, 2024-07-30)
Field: Materials Science — Biomaterials

Addition of Coffee Waste-Derived Plasticizer Improves Processability and Barrier Properties of Poly(3-hydroxybutyrate-co-3-hydroxyvalerate)-Natural Rubber Bioplastic This study aimed to develop a value-added bio-based polymer product for food packaging. Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) is a promising bioplastic with limitations in processability and brittleness, which our group previously addressed by incorporating high-molecular-weight natural rubber (NR) compatibilized with peroxide and coagent. Yet, processability in an industrial setting proved difficult. Coffee oil epoxide (COE), a waste-derived plasticizer, was incorporated into the PHBV/NR/peroxide/coagent matrix via extrusion, and properties of resulting sheets were evaluated. COE incorporation significantly decreased the oxygen and water permeability of the PHBV/NR sheets. Maximum degradation temperature T<sub>peak</sub> (°C) increased by ~4.6 °C, and degree of crystallinity decreased by ~15.5% relative to pristine PHBV, indicating good thermal stability. Melting (T<sub>m</sub>) and glass transition temperatures (T<sub>g</sub>) of the PHBV/NR blend remained unchanged with COE incorporation. X-ray diffraction (XRD) revealed ~10.36% decrease in crystal size for the plasticized blend. Energy-dispersive X-ray analysis (EDAX) and scanning electron microscopy (SEM) confirmed good dispersion with no phase separation. The water uptake capacity of the plasticized blend was reduced by 61.02%, while surface contact angle measurements showed improved water resistance. The plasticized PHBV sheet shows promise for environmentally friendly packaging films due to its high thermal stability, effective barrier properties, and industrial scalability. Bioplastic ; Plasticizer ; Natural rubber ; Materials science ; Composite material ; Waste management ; Engineering biodegradable polymer synthesis and properties ; Polymer crystallization and properties ; Microplastics and Plastic Pollution
Authors: Sinan Kutluay | Ömer Şahi̇n | Orhan Baytar
Source: Environmental Science and Pollution Research (article, 2024-03-25)
Field: Materials Science — Materials Chemistry

Enhanced benzene vapor adsorption through microwave-assisted fabrication of activated carbon from peanut shells using ZnCl2 as an activating agent Herein, microwave-assisted activated carbon (MW-AC) was fabricated from peanut shells using a ZnCl<sub>2</sub> activator and utilized for the first time to eliminate benzene vapor as a volatile organic compound (VOC). During the MW-AC production process, which involved two steps-microwave treatment and muffle furnace heating-we investigated the effects of various factors and achieved the highest iodine number of 1250 mg/g. This was achieved under optimal operating conditions, which included a 100% impregnation ratio, CO2 as the gas in the microwave environment, a microwave power set at 500 W, a microwave duration of 10 min, an activation temperature of 500 °C and an activation time of 45 min. The structural and morphological properties of the optimized MW-AC were assessed through SEM, FTIR, and BET analysis. The dynamic adsorption process of benzene on the optimized MW-AC adsorbent, which has a significant BET surface area of 1204.90 m<sup>2</sup>/g, was designed using the Box-Behnken approach within the response surface methodology. Under optimal experimental conditions, including a contact duration of 80 min, an inlet concentration of 18 ppm, and a temperature of 26 °C, the maximum adsorption capacity reached was 568.34 mg/g. The experimental data are better described by the pseudo-second-order kinetic model, while it is concluded that the equilibrium data are better described by the Langmuir isotherm model. MW-AC exhibited a reuse efficiency of 86.54% for benzene vapor after five consecutive recycling processes. The motivation of the study highlights the high adsorption capacity and superior reuse efficiency of MW-AC adsorbent with high BET surface area against benzene pollutant. According to our results, the developed MW-AC presents itself as a promising adsorbent candidate for the treatment of VOCs in various industrial applications. Adsorption ; Activated carbon ; Benzene ; Langmuir adsorption model ; BET theory ; Response surface methodology ; Materials science ; Microwave ; Fourier transform infrared spectroscopy ; Chemical engineering ; Chemistry ; Analytical Chemistry (journal) ; Organic chemistry ; Chromatography Covalent Organic Framework Applications ; Gas Sensing Nanomaterials and Sensors ; Metal-Organic Frameworks: Synthesis and Applications
Authors: Sitah Almotiry | Basma G. Alhogbi | Mohamed Abdel Salam | Mariusz Jaremko
Source: Catalysts (article, 2024-08-29)
Field: Chemistry — Inorganic Chemistry

UiO-67 Metal–Organic Framework as Advanced Adsorbent for Antiviral Drugs from Water Environment Metal–organic frameworks (MOFs) have attained significant usage as adsorbents for antiviral medicines in contemporary times. This study focused on synthesizing a UiO-67 metal–organic framework using the hydrothermal method. The synthesized framework was then characterized using Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), thermogravimetric analyses (TGA), and zeta potential measurements. The UiO-67 was then employed for the purpose of assessing the efficiency of various adsorption factors in the removal of antiviral medicines from aqueous solutions, including drugs such as ritonavir (RTV) and lopinavir (LPV), which were extensively used for the treatment of coronavirus (COVID-19) during the pandemic. The variables examined were the quantity of adsorbent used, different pH of the solution, temperature, and contact duration. The experimental findings indicate that the highest level of RTV elimination was 91.2% and of experimental adsorption capacity (qe,exp) was 9.7 mg/g and for LPV this was 85.9%, and (qe,exp) 8.9 mg/g, using 50 mg of UiO-67 at a pH 8, temperature of 298 K, and for 120 min. The impact of contact duration and temperature on the kinetics of adsorption was examined by employing pseudo-first-order and pseudo-second-order kinetic models. The experimental results showed a good match with the pseudo-second-order kinetic model with value of R2 0.99 and the qe,calc was 9.7 RTV and 8.9 mg/g LPV, which is a good match with qe,exp. Also, based on diffusion kinetic studies, the adsorption was confirmed to be catalytic in nature on the surface of the UiO-67 MOFs. A thermodynamic analysis of adsorption was conducted, whereby calculations for the Gibbs free energy change (∆G), enthalpy change (∆H), and entropy change (∆S) were performed. The positive ∆H values confirm the endothermic nature of the adsorption of RTV and LPV by UiO-67. The ΔG values exhibited negativity across all temperatures, suggesting the spontaneous nature of the adsorption process of RTV and LPV by UiO-67 from an aqueous solution. UiO-67 was shown to be highly effective in extracting RTV and LPV from real environmental samples. Adsorption ; Thermogravimetric analysis ; Fourier transform infrared spectroscopy ; Metal-organic framework ; Materials science ; Nuclear chemistry ; Zeta potential ; Kinetics ; Chemistry ; Aqueous solution ; Chemical engineering ; Nanotechnology ; Nanoparticle ; Organic chemistry Metal-Organic Frameworks: Synthesis and Applications ; X-ray Diffraction in Crystallography ; Crystallography and molecular interactions
Authors: Yanyao Li | Tao Yin | Jiawen Xu | Naiwang Liu | Li Shi | Xuan Meng
Source: Environmental Engineering Research (article, 2024-01-07)
Field: Materials Science — Materials Chemistry

The role of layered double hydroxides shell in enhancing the adsorption capacity of NaY zeolite for toluene in wet conditions Surface modification of zeolite is known to enhance its adsorption capacity for volatile organic compounds (VOCs). In this study, a hydrophobic adsorbent, NaY@LDHs, with layered double hydroxides (LDHs) as the shell and NaY zeolite as the core, was successfully synthesized. It was found that treating LDHs with ethanol can result in a larger specific surface area and pore volume, enhancing the adsorption performance of toluene under wet conditions. SEM imaging reveals that the LDHs shell grows vertically on the surface of the NaY zeolite. The dynamic adsorption experiment of toluene showed that under humid conditions, NaY@LDHs exhibited a saturated adsorption capacity of 32.42 mg/g, representing a significant 87% increase compared to the parent NaY zeolite. The kinetic results show that the adsorption of toluene on NaY@LDHs is primarily physical adsorption, and other factors influence the adsorption process in addition to intraparticle diffusion. Therefore, the air layer formed by the LDHs shell on the surface of NaY zeolite imparts a hydrophobic effect, making NaY@LDHs a promising material for adsorbing volatile organic compounds in a wet environment. Zeolite ; Toluene ; Adsorption ; Shell (structure) ; Chemical engineering ; Layered double hydroxides ; Materials science ; Chemistry ; Organic chemistry ; Composite material ; Catalysis Layered Double Hydroxides Synthesis and Applications
Authors: Zhuoxuan Li | Tatyana Kovshova | Julia Malinovskaya | Julian Knoll | Saeed Shanehsazzadeh | Nadezhda Osipova | Anastasia Chernysheva | Pavel Melnikov | Svetlana Gelperina | Matthias G. Wacker
Source: International Journal of Nanomedicine (article, 2024-03-01)
Field: Materials Science — Biomaterials

Blood-Nanoparticle Interactions Create a Brain Delivery Superhighway for Doxorubicin The nonspecific binding to blood cells facilitated and intensified interactions of surfactant-coated PBCA nanoparticles with the vascular endothelium, leading to enhanced transcytosis. Consequently, the significant increase in circulation time in the bloodstream, coupled with improved receptor interactions, contributes to this remarkable uptake of doxorubicin into the brain. Transcytosis ; Blood–brain barrier ; Extravasation ; Doxorubicin ; Drug delivery to the brain ; Chemistry ; Pharmacology ; Biophysics ; Drug delivery ; Nanoparticle ; Medicine ; Endocytosis ; Cell ; Nanotechnology ; Materials science ; Biology ; Biochemistry ; Immunology ; Central nervous system ; Chemotherapy ; Internal medicine Nanoparticle-Based Drug Delivery ; Glioma Diagnosis and Treatment ; Lanthanide and Transition Metal Complexes