jablonkagroup/rise_ai_scientists huggingface dataset:
Authors: Muhammad Ahdan | Alfan Rizky Saputra | Rifqy Ivan | Yohanes Mangarohontua Panjaitan
Source: Journal of Chemical Engineering Research Progress (article, 2024-01-13)
Field: Materials Science — Materials Chemistry

Improving Heat Efficiency of Aniline Production Process by Modifying Heat Transfer Fluid Looping System in Heating and Cooling Process The nitrobenzene hydrogenation process is a highly exothermic reaction which causes the product temperature will increase and then needs to be cooled down with a heat exchanger. The modification process is needed to improve the heat efficiency of the nitrobenzene hydrogenation process by utilizing the heat from reactor product. Heat transfer fluid is used as a medium of heat transfer for both heating and cooling, so that will create a looping heat transfer process. The looping system of heat transfer fluid receives heat from reactor product and then reuses the heat to reheat the recycled hydrogen and for other utilities, so additional energy for these processes is not required. The process modification was simulated using Aspen HYSYS and the comparison of heat efficiency between the basic and the modified process is calculated using the net-energy formula. The results obtained that the net-energy (NE) value for both basic and modified process is 96,714,359.832 kJ/h and 9.869 kJ/h. This shows that the modified process has better energy efficiency compared to the basic process as the net-energy value is closer to zero. Therefore, this modification increases the heat efficiency of the aniline production through nitrobenzene hydrogenation process. Copyright © 2024 by Authors, Published by Universitas Diponegoro and BCREC Publishing Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0). Exothermic reaction ; Heat transfer ; Process (computing) ; Nitrobenzene ; Heat exchanger ; Materials science ; Process engineering ; Thermodynamics ; Chemistry ; Engineering ; Catalysis ; Organic chemistry ; Computer science Hydrogen Storage and Materials ; Electrohydrodynamics and Fluid Dynamics ; Nanomaterials for catalytic reactions
Authors: Emilia Milos | Laura Cocheci | Adriana Popa | Lavinia Lupa | Anca Filimon
Source: Molecules (article, 2024-12-19)
Field: Materials Science — Materials Chemistry

Hybrid Materials—Mg3Al-LDH/Ionic Liquids/Chitosan Used in the Recovery Process of Pd Ions from Aqueous Solutions The recovery of palladium from aqueous solutions is important due to its critical role in various industrial applications and the growing demand for sustainable resource management. This study investigates the potential of hybrid materials composed of Mg<sub>3</sub>Al layered double hydroxides (LDHs), chitosan, and ionic liquids (methyl trialchil ammonium chloride) for the efficient adsorption of palladium ions from low-concentration aqueous solutions. Comprehensive characterization techniques, including X-ray diffraction (RX), Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDX), and thermogravimetric analysis (TG), were employed to elucidate the structural and compositional properties of the hybrid materials. The results of the batch adsorption experiments demonstrate that each component contributes synergistically to the adsorption process, significantly enhancing the overall efficacy of palladium recovery. Furthermore, the method of preparing the adsorbent material was found to impact the effectiveness of palladium recovery. Among the materials tested, the chitosan/Mg<sub>3</sub>Al/IL hybrid exhibited the highest adsorption capacity (q<sub>max</sub> = 98 mg/g), suggesting that the ionic liquid functionalization is most beneficial when applied during the hybrid material synthesis, rather than during the LDH synthesis process. This research underscores the viability of hybrid materials as a sustainable approach to palladium recovery, contributing to advancements in environmental remediation technologies. Ionic liquid ; Thermogravimetric analysis ; Adsorption ; Palladium ; Fourier transform infrared spectroscopy ; Chitosan ; Aqueous solution ; Materials science ; Chemical engineering ; Surface modification ; Hybrid material ; Inorganic chemistry ; Chemistry ; Nanotechnology ; Organic chemistry ; Catalysis Layered Double Hydroxides Synthesis and Applications ; Adsorption and biosorption for pollutant removal ; Nanomaterials for catalytic reactions
Authors: Wenquan Sun | Yueqian Cheng | Zhi‐Qiang Xiao | Jun Zhou | Kinjal J. Shah | Yongjun Sun
Source: Water Environment Research (article, 2024-06-01)
Field: Materials Science — Materials Chemistry

Catalytic ozonation of reverse osmosis membrane concentrates by catalytic ozonation: Properties and mechanisms Ni-Mn@KL ozone catalyst was prepared for the efficient treatment of reverse osmosis membrane concentrates. The working conditions and reaction mechanism of the ozone-catalyzed oxidation by Ni-Mn@KL were systematically studied. Then, a comprehensive CRITIC weighting-coupling coordination evaluation model was established. Ni-Mn@KL was characterized by scanning electron microscopy, BET, X-ray diffraction, X-ray photoelectron spectroscopy, energy-dispersive spectrometry, and X-ray fluorescence spectrometry and found to have large specific surface area and homogeneous surface dispersion of striped particles. Under the optimum working conditions with an initial pH of 7.9 (raw water), a reaction height-to-diameter ratio of 10:1, an ozone-aeration intensity of 0.3 L/min, and a catalyst filling rate of 10%, the maximum COD removal rate was 60.5%. Free-radical quenching experiments showed that OH oxidation played a dominant role in the Ni-Mn@KL-catalyzed ozone-oxidation system, and the reaction system conformed to the second-order reaction kinetics law. Ni-Mn@KL catalysts were further confirmed to have good catalytic performance and mechanical performance after repeated utilization. PRACTITIONER POINTS: Ni-Mn@KL catalyst can achieve effective treatment of RO film concentrated liquid. High COD removal rate of RO membrane concentrated liquid was obtained at low cost. Ni-Mn@KL catalyst promotes ozone decomposition to produce ·OH and O<sub>2</sub> <sup>-</sup>· oxidized organic matter. The Ni-Mn@KL catalyst can maintain good stability after repeated use. A CRITIC weight-coupling coordination model was established to evaluate the catalytic ozonation. Catalysis ; Chemistry ; Ozone ; Reverse osmosis ; Membrane ; Chemical engineering ; Inorganic chemistry ; Analytical Chemistry (journal) ; Chromatography ; Organic chemistry Catalytic Processes in Materials Science ; Advanced oxidation water treatment ; Advanced Photocatalysis Techniques
Authors: Junzheng Wang | Maofeng Zhu | Jierong Zhou
Source: ACS Omega (article, 2024-04-25)
Field: Materials Science — Materials Chemistry

Preparation of a Porous Protein-Based Composite Material by In Situ Polymerization of Pickering High Internal Phase Emulsion for Adsorption of Lead Ions The preparation of complex porous materials using a small molecular surfactant as the stabilizer of a high internal phase emulsion can result in harm to the environment. In this study, porous composites based on soy protein isolate with poly(acrylic acid) were prepared by in situ polymerization of a high internal phase monomer emulsion with an internal phase volume fraction of 80%. The material was prepared from acrylic acid and an N,N-methyl diacrylic acid monomer solution as the continuous phase, peanut oil as the dispersed phase, and soy protein isolate as the composite stabilizer. Scanning electron microscopy showed that porous composites exhibited a concave/convex three-dimensional interpenetrating pore structure. Fourier-transform infrared spectra revealed the existence of many active groups such as carboxyl, amino, hydroxyl, and sulfhydryl. The composite had a high adsorption capacity for lead ions, even at low concentration, with a removal rate of up to 95.7%. The adsorption process conformed to a two-stage model involving internal diffusion and Langmuir isothermal adsorption. The maximum saturated adsorption capacity was 36.71 mg/g when the initial solution concentration was 150 mg/L, the adsorbent concentration was 7.0 g/L, and the adsorption mechanism involved chemical interactions between the lead ions and the composite groups −COOH, −OH, and −SH. Pickering emulsion ; Adsorption ; Composite number ; Emulsion ; Polymerization ; Porosity ; In situ polymerization ; Chemical engineering ; In situ ; Materials science ; Emulsion polymerization ; Ion ; Phase (matter) ; Polymer chemistry ; Chemistry ; Organic chemistry ; Polymer ; Composite material Pickering emulsions and particle stabilization ; Proteins in Food Systems ; Supramolecular Self-Assembly in Materials
Authors: Gorkshnath H. Gote | Madhura Pradeep Deshpande | Somnath R. Bhopale | Mahendra A. More | Raphael Longuinhos | Jenaina Ribeiro‐Soares | Dattatray J. Late
Source: Nanoscale Advances (article, 2024-11-13)
Field: Materials Science — Electronic, Optical and Magnetic Materials

Enhanced field emission performance of gold nanoparticle decorated Bi<sub>2</sub>S<sub>3</sub> nanoflowers Au nanoparticles (NPs) are decorated on hydrothermally synthesized Bi<sub>2</sub>S<sub>3</sub> nanorods (NRs) to enhance the field electron emission (FEE) performance as compared to bare Bi<sub>2</sub>S<sub>3</sub> nanorods, resulting in reduction in turn-on field from 3.7 to 2.7 V μm<sup>-1</sup> (at the current density of 1.0 μA cm<sup>-2</sup>) with significant increment in maximum emission current density from 138 to 604.8 μA cm<sup>-2</sup> (at a field of 7.8 V μm<sup>-1</sup>) respectively. FESEM/TEM reveals that Bi<sub>2</sub>S<sub>3</sub> nanoflowers are assembled from Bi<sub>2</sub>S<sub>3</sub> NRs of a typical diameter of 120 ± 10 nm, and Au NPs of diameter about 5-10 nm are uniformly decorated onto the surface of NRs to form an Au/Bi<sub>2</sub>S<sub>3</sub> composite. XRD analysis suggests that the as-synthesized product consists of orthorhombic Bi<sub>2</sub>S<sub>3</sub> NRs decorated with face-centered cubic Au NPs. The XPS spectrum shows the elemental mapping of the as-synthesized Au/Bi<sub>2</sub>S<sub>3</sub>. Improvement in field emission properties is mainly attributed to a reduction in work function and increasing emitting sites due to Au NP decoration. Field electron emission ; Nanorod ; Materials science ; Nanotechnology ; Nanoparticle ; Colloidal gold ; Current density ; Field (mathematics) ; Electron ; Physics Ga2O3 and related materials ; Electronic and Structural Properties of Oxides ; Quantum Dots Synthesis And Properties
Authors: Wenguang Wang | Jing Guo | Yanqiu Zhang | Lu Shao
Source: Matter (article, 2024-08-01)
Field: Chemistry — Electrochemistry

Kinetic barrier networks: New insights on rate-limiting mechanisms in selective ion transport Kinetic energy ; Limiting ; Ion ; Chemistry ; Ion transporter ; Chemical physics ; Transition state theory ; Membrane ; Nanotechnology ; Kinetics ; Materials science ; Physics ; Reaction rate constant ; Engineering ; Classical mechanics Electrochemical Analysis and Applications ; Fuel Cells and Related Materials ; Molecular Junctions and Nanostructures
Authors: Farid Fadhillah | Abdulrahman G. Alhamzani | Khaled Bin Bandar | Abdullah Alshamari | Saad A. Aljlil | Abdelrahman G. Gadallah | Mohamed A. Habib | Mortaga M. Abou–Krisha | Mona A. Abdel‐Fatah
Source: Gels (article, 2024-09-26)
Field: Materials Science — Biomaterials

Application of Anionic Hydrogels from Date Palm Waste for Dye Adsorption in Wastewater Treatment This work aimed to develop an anionic cellulose nanofiber (CNF) bio-adsorbent from date palm tree waste and to investigate its removal efficiency compared to cationic methylene blue dye from contaminated water. Date palm pulp was first prepared from date palm leaves through acid hydrolysis using H<sub>2</sub>SO<sub>4</sub>, followed by hydrolysis in a basic medium using KOH, in which the process completely removed the components of hemicellulose, lignin, and silica. To obtain anionic CNF, the resulting pulp was further treated with H<sub>2</sub>SO<sub>4</sub>, followed by centrifugation. Biogel formation of the CNF suspension was promoted by sonication, where its removal efficiency of methylene blue dye was studied as a function of dye concentration, temperature, contact time, and pH value. In this work, we investigated two isotherms, i.e., Langmuir and Freundlich. The Langmuir model's consistency with the experimental data suggests that the adsorption of methylene blue dye onto CNF is monolayer and surface-limited. The reported maximum removal efficiency of 5 mg/g at 60 °C indicates the optimal temperature for adsorption in this specific case. Additionally, a pseudo-second-order model and Elovich model were also utilized to obtain a better understanding of the adsorption mechanism, in which we found not just physical adsorption but also an indication of a chemical reaction occurring between methylene blue dye and CNF. According to the results, that pseudo-second-order model's consistency with the experimental data suggests that the adsorption of methylene blue (MB) onto CNF is rate-limiting step involving chemisorption between the two. The study reveals that CNF adsorbents derived from renewable natural waste sources such as date palm leaves can be effective in removing cationic contaminants such as methylene blue dye. Adsorption ; Methylene blue ; Freundlich equation ; Langmuir ; Chemistry ; Langmuir adsorption model ; Cationic polymerization ; Cellulose ; Chemisorption ; Hydrolysis ; Chemical engineering ; Nuclear chemistry ; Organic chemistry ; Photocatalysis Advanced Cellulose Research Studies ; Adsorption and biosorption for pollutant removal
Authors: Ștefania Racoviță | Marin‐Aurel Trofin | Ana‐Lavinia Vasiliu | Mihaela Avădanei | Diana Felicia Apopei Loghin | Marcela Mihai | Silvia Vasiliu
Source: International Journal of Molecular Sciences (article, 2024-07-18)
Field: Materials Science — Biomaterials

Studies on Sorption and Release of Doxycycline Hydrochloride from Zwitterionic Microparticles with Carboxybetaine Moieties The aim of this study was to examine the use of zwitterionic microparticles as new and efficient macromolecular supports for the sorption of an antibiotic (doxycycline hydrochloride, DCH) from aqueous solution. The effect of relevant process parameters of sorption, like dosage of microparticles, pH value, contact time, the initial concentration of drug and temperature, was evaluated to obtain the optimal experimental conditions. The sorption kinetics were investigated using Lagergren, Ho, Elovich and Weber-Morris models, respectively. The sorption efficiency was characterized by applying the Langmuir, Freundlich and Dubinin-Radushkevich isotherm models. The calculated thermodynamic parameters (ΔH, ΔS and ΔG) show that the sorption of doxycycline hydrochloride onto zwitterionic microparticles is endothermic, spontaneous and favorable at higher temperatures. The maximum identified sorption capacity value is 157.860 mg/g at 308 K. The Higuchi, Korsmeyer-Peppas, Baker-Lonsdale and Kopcha models are used to describe the release studies. In vitro release studies show that the release mechanism of doxycycline hydrochloride from zwitterionic microparticles is predominantly anomalous or non-Fickian diffusion. This study could provide the opportunity to expand the use of these new zwitterionic structures in medicine and water purification. Sorption ; Chemistry ; Hydrochloride ; Langmuir ; Endothermic process ; Doxycycline ; Dissolution ; Freundlich equation ; Chromatography ; Kinetics ; Chemical engineering ; Nuclear chemistry ; Aqueous solution ; Adsorption ; Organic chemistry ; Biochemistry ; Antibiotics Nanoparticle-Based Drug Delivery ; Polymer Surface Interaction Studies ; Advanced Drug Delivery Systems
Authors: Natalia Soszka | Magdalena Tarnacka | Barbara Hachuła | P. Włodarczyk | R. Wrzalik | Marek Hreczka | Marian Paluch | Kamil Kamiński
Source: Nanoscale (article, 2024-01-01)
Field: Materials Science — Materials Chemistry

The existence of a strongly bonded layer in associating liquids within silica pores – a spectral and molecular dynamics study The properties of confined materials are assumed to be governed by the phenomena occurring at the interface, especially the formation of an irreversible adsorption layer (IAL), which has been widely discussed and detected in the case of thin polymer films and silica nanoparticles. In this paper, we present a novel experimental approach allowing us to reveal the formation of an IAL in two phenyl alcohols infiltrated into various mesoporous silica templates. The proposed methodology (based on evaporation) allowed us to detect the alterations in the OH and aromatic CH stretching vibration bands in infrared spectra, which were considered as evidence of the existence of IAL in constrained systems. Such interpretation was also confirmed by complementary molecular dynamics (MD) simulations that indicated the creation of much stronger hydrogen bonds between alcohols and silanol units than between alcohols themselves. Moreover, computation allowed us to identify additional enormously strong π-stacking interactions between phenyl rings stabilizing the interfacial layer. MD simulations also shed new light on the clustering process of both alcohols under confinement. Simulation and experimental data presented in this paper allowed a much deeper understanding of the processes occurring at the interface-formation of IAL and the association phenomenon at the nanoscale level. Adsorption ; Layer (electronics) ; Mesoporous silica ; Molecular dynamics ; Materials science ; Chemical engineering ; Dynamics (music) ; Mesoporous material ; Template ; Chemical physics ; Nanotechnology ; Computational chemistry ; Chemistry ; Organic chemistry ; Catalysis Mesoporous Materials and Catalysis ; Analytical Chemistry and Chromatography ; Surfactants and Colloidal Systems
Authors: Esraa Salama | Samar M. Mahgoub | Ahmed A. Allam | Haifa E. Alfassam | Rehab Mahmoud
Source: Colloids and Interfaces (article, 2024-12-26)
Field: Materials Science — Polymers and Plastics

Remediation of Caffeine from Aqueous Solutions Using Waste-Derived Adsorbents: A Polyaniline/Cuttlefish Bone Nanocomposite for Pollutant Removal Caffeine is commonly used in pharmaceutical and personal care products, where it serves both therapeutic and cosmetic purposes. However, its widespread presence in wastewater from the pharmaceutical and cosmetic industries has raised concerns about environmental contamination. This study explores the use of a polyaniline (PANI)/cuttlefish bone (CB) nanocomposite as an effective adsorbent for the removal of caffeine from aqueous solutions. The nanocomposite was synthesized by incorporating polyaniline (PANI) onto cuttlefish bone (CB) flakes, resulting in a material with a hybrid morphology consisting of layered nanosheets and flaky structures. Adsorption experiments were conducted to determine the optimal conditions for caffeine removal, with results showing the best adsorption efficiency at pH 7 and an adsorbent dosage of 0.1 g/L for the nanocomposite, achieving an 80.73% removal efficiency. The maximum adsorption capacity of the nanocomposite was 108.33 mg/g—significantly higher than for pure CB (55.05 mg/g) and PANI (57.71 mg/g). The adsorption process followed the pseudo-second-order kinetic model and the Langmuir isotherm, indicating a chemisorption mechanism and monolayer adsorption. Additionally, the nanocomposite demonstrated excellent reuse capacity, maintaining over 85% of its initial efficiency after multiple adsorption–desorption cycles, highlighting its potential for sustainable long-term use. This work demonstrates the potential of using waste-derived materials like cuttlefish bone as an effective support for PANI in the development of low-cost, sustainable adsorbents for pollutant remediation in pharmaceutical wastewater. Future studies will explore the adsorbent’s applicability for other contaminants and its potential antimicrobial properties. Adsorption ; Polyaniline ; Nanocomposite ; Aqueous solution ; Chemical engineering ; Langmuir adsorption model ; Wastewater ; Materials science ; Environmental remediation ; Environmental impact of pharmaceuticals and personal care products ; Desorption ; Pulp and paper industry ; Chemistry ; Waste management ; Nanotechnology ; Organic chemistry ; Contamination ; Composite material ; Polymer Conducting polymers and applications ; Microplastics and Plastic Pollution ; Adsorption and biosorption for pollutant removal
Authors: Kanokwan Singpanna | Puchapong Jiratananan | Santipharp Paiboonwasin | Nawinda Petcharawuttikrai | Prin Chaksmithanont | Chaiyakarn Pornpitchanarong | Prasopchai Patrojanasophon
Source: Polymers (article, 2024-10-18)
Field: Chemistry — Organic Chemistry

Alpha-Tocopherol-Infused Flexible Liposomal Nanocomposite Pressure-Sensitive Adhesive: Enhancing Skin Permeation of Retinaldehyde Retinaldehyde (RAL), or retinal, is a vitamin A derivative that is widely used for several skin conditions. However, it is light sensitive and has low water solubility, limiting its efficiency in transdermal delivery. This study developed a novel delivery system for retinal (RAL) using flexible liposomes (FLPs) infused with α-tocopherol succinate (α-TS) to improve stability, and enhance skin permeability. The RAL-FLPs were embedded in pressure-sensitive adhesive (PSA) hydrogels, creating a delivery platform that supports prolonged skin residence and efficient permeation of RAL. The stability and skin permeation as well as human skin irritation and adhesion capabilities were assessed to determine the formulation's safety and efficacy. Our findings suggested that the addition of α-TS could improve liposomal stability and RAL chemical stability. Moreover, the skin permeation and fluorescence microscopic-based studies suggested that the addition of α-TS could enhance skin permeability of RAL through hair follicles. The RAL-FLP was embedded in PSA hydrogels fabricated from 25% Gantrez<sup>TM</sup> S-97 (GT) and 1% hyaluronic acid (Hya) with aluminum as a crosslinker. The PSA hydrogel exhibited desirable peeling and tacking strengths. The developed hydrogels also demonstrated greater skin deposition of RAL compared with its aqueous formulation. Additionally, the RAL-FLP-embedded PSA hydrogels showed no skin irritation and maintained better adhesion for up to 24 h compared to commercial patches. Hence, the developed hydrogels could serve as a beneficial platform for delivering RAL in treating skin conditions. Permeation ; Pressure sensitive ; Adhesive ; Tocopherol ; Liposome ; Chemistry ; Nanocomposite ; Materials science ; Chromatography ; Organic chemistry ; Membrane ; Biochemistry ; Vitamin E ; Nanotechnology ; Antioxidant Polydiacetylene-based materials and applications ; Advancements in Transdermal Drug Delivery ; Conducting polymers and applications
Authors: Seyede Sahar Hashemi | Mahmoud Najari | Milad Parvin | Mohammad Mehdi Kalani | Majid Assadi | Ramin Seyedian | Sasan Zaeri
Source: PubMed (article, 2024-01-01)
Field: Materials Science — Biomaterials

Wound healing effects of dexpanthenol-loaded core/shell electrospun nanofibers: Implication of oxidative stress in wound healing. Dex-loaded core/shell fibers provided nano-scale scaffolds with sustained release profile that significantly lowered tissue oxidative stress. This finding pointed to the importance of lowering oxidative stress to achieve proper wound healing. Wound healing ; Oxidative stress ; Malondialdehyde ; Superoxide dismutase ; Chemistry ; Fibroblast ; Nanofiber ; Electrospinning ; Biophysics ; Lipid peroxidation ; Chitosan ; Pharmacology ; Biomedical engineering ; Materials science ; Biochemistry ; Composite material ; Surgery ; Organic chemistry ; Medicine ; Polymer ; In vitro Electrospun Nanofibers in Biomedical Applications ; Wound Healing and Treatments ; Silk-based biomaterials and applications