jablonkagroup/rise_ai_scientists huggingface dataset:
Authors: Zachary P. Smith | Hyunhee Lee | Moein Hajian Z. D. | Taigyu Joo | Wan‐Ni Wu | Jing Ying Yeo | Tae Hoon Lee | Joshua D. Howe
Source: Research Square (preprint, 2024-09-10)
Field: Chemistry — Inorganic Chemistry

Facet-Specific Gas Transport Properties of Metal–Organic Frameworks in Polymer Nanocomposites Facet (psychology) ; Nanocomposite ; Materials science ; Polymer ; Metal ; Metal-organic framework ; Polymer nanocomposite ; Nanotechnology ; Chemical engineering ; Composite material ; Chemistry ; Engineering ; Metallurgy ; Organic chemistry Metal-Organic Frameworks: Synthesis and Applications ; Membrane Separation and Gas Transport ; Covalent Organic Framework Applications
Authors: Wen‐Jun Zhou | Zhixiang Lv | Yao Wang | Sheng Luo | Dan Zhou | Guodong Su
Source: Environmental Progress & Sustainable Energy (article, 2024-07-11)
Field: Chemistry — Organic Chemistry

Adsorption mechanism and electrochemical properties of disperse blue <scp>2BLN</scp> onto magnetic Cu<sub>0.</sub><scp><sub>2</sub>Zn<sub>0</sub></scp><sub>.</sub><scp><sub>3</sub>Co<sub>0</sub></scp><sub>.</sub><scp><sub>5</sub>Fe<sub>2</sub>O<sub>4</sub></scp> nanoparticles prepared via the rapid combustion process Abstract Magnetic Cu 0.2 Zn 0.3 Co 0.5 Fe 2 O 4 nanoparticles were prepared by the rapid combustion method and characterized by scanning electron microscope (SEM), energy dispersive spectroscopy (EDS), x‐ray diffraction (XRD), and vibrating sample magnetometer (VSM). The average particle size and the saturation magnetization of the nanoparticles prepared at 400°C with 25 mL absolute alcohol were about 60.9 nm and 50 emu/g. The results of the experiment displayed that the adsorption process agreed with the pseudo‐second‐order kinetics model ( R 2 &gt; 0.98) and Langmuir isotherm model ( R 2 = 0.9982), indicating that the adsorption of DB‐2BLN onto magnetic Cu 0.2 Zn 0.3 Co 0.5 Fe 2 O 4 nanoparticles was monolayer chemisorption. Δ H (Δ H = −28.0135 kJ/mol) of the thermodynamic experiment was less than 0, indicating that the adsorption was an exothermic process. The effects of pH, initial concentration of dye, ionic strength, temperature, and adsorbent dosage on the adsorption process of DB‐2BLN onto magnetic Cu 0.2 Zn 0.3 Co 0.5 Fe 2 O 4 nanoparticles and the regeneration performance of the nanoparticles were investigated. When the pH was determined to be 2 and the adsorbent dosage was 5 mg, the adsorption capacity reached the maximum. After 7 cycles, the removal rate of DB‐2BLN still reached 92.6% of that for the first adsorption, showing excellent regeneration performance. Finally, the electrochemical properties of the magnetic Cu 0.2 Zn 0.3 Co 0.5 Fe 2 O 4 nanoparticles were investigated by cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). Electrochemistry ; Adsorption ; Chemistry ; Analytical Chemistry (journal) ; Nuclear chemistry ; Materials science ; Electrode ; Physical chemistry ; Chromatography Nanomaterials for catalytic reactions ; Copper-based nanomaterials and applications ; Advancements in Battery Materials
Authors: Jie Ren | Shuangbao Wang | Aotian Gu | Chunhui Gong | Kaiwei Chen | Ping Mao | Yan Jiao | Kai Chen | Yi Yang
Source: PLoS ONE (article, 2024-12-31)
Field: Chemistry — Inorganic Chemistry

Removal of liquid scintillator exudates by the metal organic frameworks materials: The role of functional groups The leakage of Liquid scintillator exudates has brought potential harm to the environment. Attributed to the large specific surface area and high modifiability, high-performance adsorbents based on metal-organic frameworks (MOFs) can effectively remove organic pollutants. In this work, we use different functional groups to prepare the material of UIO-66(Zr). These materials were used to remove dimethyl sulfoxide (DMSO) from water, which is considered a typical liquid scintillator exudate. The results showed that the UIO-66-NH2 (154.3 mg/g) exhibited better adsorption performance compared to the UIO-66-OH (39.5 mg/g) and UIO-66-COOH (105.8 mg/g) for the removal of DMSO. Upon examining the adsorptive abilities of various samples of different UIO-66-NH2 samples, it was observed that the material's ability to adsorb is in a direct relationship with the -NH2 group concentration present in the substance, as evidenced by a correlation coefficient R2 of 0.99. Simultaneously, in the low concentration of environment, the samples of UIO-66 which load NH2 groups shows high removal effectiveness of over 90%. The adsorption capacity of the prepared materials was little affected by the complex water quality conditions and different initial pH values (between 4~10). Furthermore, the material has good reusability and adsorption capacity over five cycles, and slight zirconium release (< 5%). This optimal material showed significant removal capacity for DMSO. In conclusion, this work presents insight into the construction of advanced adsorbents for the removal of liquid scintillator exudates that have high adsorption capacity and strong potential for DMSO removal. Adsorption ; Metal-organic framework ; Scintillator ; Metal ; Leaching (pedology) ; Chemistry ; Materials science ; Chemical engineering ; Nuclear chemistry ; Inorganic chemistry ; Organic chemistry ; Soil water Metal-Organic Frameworks: Synthesis and Applications ; Covalent Organic Framework Applications ; Radioactive element chemistry and processing
Authors: Akeem Adesina Bamigbade | K. D. Oduntan | J. T. Bamgbose
Source: Journal of Chemical Society of Nigeria (article, 2024-08-29)
Field: Chemistry — Organic Chemistry

CHITOSAN ASSISTED SILVER NANOPARTICLES FOR DEGRADATION OF DYES FROM Malachite green dye adsorption from aqueous solution using silver nanoparticle (AgNP) stabilized with sodium tripolyphosphate cross-linked chitosan is reported in this study. Silver nanoparticle prepared was characterized by Fourier transform Infra-red spectroscopy (FTIR), X-ray diffractometry (XRD), UV-visible spectrophotometer and Scanning electron microscopy (SEM). The crystalline nature of the AgNP was revealed with XRD. The cubic face-centered structure of the synthesized silver nanoparticle was confirmed. This was supported by the observed sharp four diffraction peaks with peaks intense appeared at 2? = 38.09°, 44.15°, 64.67°, and 77.54°. However, the SEM micrograph of the synthesized AgNP revealed the spherical shape of AgNP with a non-uniform granular shape attributed to bio-mediated ionic gelation process. The surface of the synthesized AgNP has a spherical shape and slightly elongated with a big tendency to aggregate and form larger particle clusters. Whereas, FTIR spectra of AgNP gave peaks at 1054 – 1645 cm- 1 suggesting the presence of phosphonate linkages between ammonium, -NH3+ of chitosan and –PO32- moieties of NaTPP during cross linking process. The adsorption study was carried out under different conditions such as, pH, adsorbent dosage, contact time, temperature and initial concentration of dye to determine the ideal conditions and the maximum adsorption capacities. The results indicated that increase in temperature had very minimal effect on the adsorption process. The silver nanoparticle was effective in the removal of malachite green in acidic medium. This observation may be due to strong adsorption of the dye on the acidic surface of silver nanoparticle adsorbent by an acid-base interaction mechanism between the adsorbents and the adsorbates. Thus, the adsorption mechanism can be best described by electrostatic interaction. Langmuir, Freundlich and Tempkin model gave a better fit to adsorption isotherms while Dubinin Radushkevich model is not appropriate for the adsorption process. The kinetic study of malachite green onto silver nanoparticle adsorbents showed that the adsorption kinetics followed both the pseudo-first-order and pseudo-second-order rate. The results obtained from this study indicate that silver nanoparticle could be utilized as effective adsorbents for the removal of dyes from aqueous solution. Degradation (telecommunications) ; Silver nanoparticle ; Nanoparticle ; Chitosan ; Materials science ; Nanotechnology ; Chemical engineering ; Telecommunications ; Computer science ; Engineering Nanomaterials for catalytic reactions ; Advanced Nanomaterials in Catalysis
Authors: Shusen Li | Saddam Hussain | Hongzhi Liu
Source: Chemistry - An Asian Journal (article, 2024-12-23)
Field: Materials Science — Materials Chemistry

Facile Synthesis of Silsesquioxane‐Based Hybrid Crosslinked Polymers via One‐Step Amine‐Ene Reaction for Efficient Adsorption of Various Pollutants The rapid advancement of industrial production has led to an increase in water pollutants, posing a significant threat to public health. With the deepening of research on pollutant adsorbents. The application of silsesquioxane-based cross-linked polymer networks in water pollution treatment has gradually attracted people's attention. This study introduces two new crosslinked hybrid network, PCS-OB and PCS-OP, which were created through one-step amine-ene reaction between octa(aminophenyl) silsesquioxane (OAPS) and bismaleimide or N, N'-1,3-phenylenedimaleimide. The synthesized hybrid networks were characterized using Fourier-transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), Brunauer-Emmett-Teller (BET) surface area analysis, thermogravimetric analysis (TGA), and solid-state nuclear magnetic resonance (NMR) spectroscopy. The successful synthesis of the material is proved. PCS-OB and PCS-OP exhibited remarkable efficiency in the adsorption and removal of contaminants such as antibiotics, dyes, and iodine from wastewater. The maximum adsorbents for Rhodamine B (RhB), iodine vapor and berberine hydrochloride (BCH) were 1069 mg g<sup>-1</sup>, 1590 mg g<sup>-1</sup> and 294 mg g<sup>-1</sup>, respectively. In conclusion, this work proves that PCS-OB and PCS-OP have broad application prospects in pollutant treatment. Silsesquioxane ; Thermogravimetric analysis ; Adsorption ; Fourier transform infrared spectroscopy ; Materials science ; Ene reaction ; Nuclear chemistry ; Polymer ; Chemical engineering ; Polymer chemistry ; Chemistry ; Organic chemistry ; Composite material Silicone and Siloxane Chemistry ; Advanced ceramic materials synthesis ; Synthesis and properties of polymers
Authors: Y.Z. Mao | Haoran Zhu | Boyuan Zhang | Ziqi Wu | Bing Zhao | Rui Yuan | Mingru Zhou | Min Zheng | Guanjun Chang | Yewei Xu
Source: Research Square (preprint, 2024-03-18)
Field: Chemistry — Organic Chemistry

One-Step Preparation of Indole-Based Porous Magnetic Composite via Cation-π Interaction-Driven and -Induced Strategy Abstract A strategy driven and induced by cation-π interaction was employed to obtain magnetic porous composite material with a uniform dispersion of ferroferric oxide (Fe 3 O 4 ). Ferroferric oxide/indole-based porous composite (Fe 3 O 4 /PIN) was prepared in a one-step process. Cation-π interaction dispersed iron ions (Fe 3+ ) next to the indole groups in the indole-based porous polymer (PIN), and subsequently, after the in-situ reaction, Fe 3 O 4 was uniformly distributed around the indole groups within PIN. At 298 K, Fe 3 O 4 /PIN displayed remarkable adsorption effectiveness, attaining 290.697 mg/g, and within 1 hour, had achieved 74% of the highest capacity. In addition, due to the excellent magnetic properties of Fe 3 O 4 /PIN, it exhibited rapid recovery characteristics for TNT. Despite five cycles of adsorption-desorption, with acetone as the eluent, the adsorption capacity of Fe 3 O 4 /PIN for TNT still remains at 90% of its highest potential. Hence, Fe 3 O 4 /PIN is anticipated to serve as an effective adsorbent for TNT. The uniform distribution of Fe 3 O 4 in porous materials through the driving and inducing effects of cation-π is an unprecedented innovation, providing a new perspective and approach for the preparation and application of similar composite materials. Composite number ; Indole test ; Porosity ; Chemical engineering ; Materials science ; Chemistry ; Composite material ; Organic chemistry ; Engineering Nanomaterials for catalytic reactions ; Supercapacitor Materials and Fabrication ; Mesoporous Materials and Catalysis
Authors: Idowu Iyabo Olateju | Abel Adekanmi Adeyi | Abdulwahab Gıwa
Source: ABUAD Journal of Engineering Research and Development (AJERD) (article, 2024-09-24)
Field: Materials Science — Materials Chemistry

Carbon Dots Derived from Waste Fish Scale for Enhanced Removal of Levofloxacin Drug: Parametric Optimization, Isotherm and Kinetic Studies The public health and environmental protection have been facing a great challenge for efficient antibiotics' adsorption from aqueous solution. In this work, a carbon dots nanoparticle from biomass (fish scale) was synthesized and employed for antibiotic adsorption. The synthesized fish scale carbon dots (FCD) were characterized by means of the X-ray diffraction (XRD), Scanning Electron Microscopy (SEM) and Fourier transform infrared (FTIR) analyses. Experiments on adsorption were performed to examine the capability of the synthesized adsorbent for adsorption of Levofloxacin. The optimum conditions were ascertained through the use of Response Surface Methodology (RSM) design to increase the effectiveness of levofloxacin removal, and there was 96.03% removal efficiency of 60 minutes contact time, 10 mg/L levofloxacin concentration and FCD dosage of 0.2 g/L. Also, the adsorption experiments indicated that at the lowest concentration of 10 mg/L, at time 45 min and 0.15 mg dosage the adsorption rate was high. For the kinetics data, the pseudo-second order model best fit the data. Furthermore, the Redlich-Peterson model fit isothermal data the best. Kinetic energy ; Parametric statistics ; Fish <Actinopterygii> ; Scale (ratio) ; Environmental science ; Chemistry ; Fishery ; Mathematics ; Statistics ; Biology ; Physics Carbon and Quantum Dots Applications ; Adsorption and biosorption for pollutant removal ; Graphene and Nanomaterials Applications
Authors: Qing Wang | Shiyi Zuo | Shufang Zheng | Cui-Yun Liu | Yaqiao Li | Jiayu Guo | Danping Wang | Shuo Wang | Wenjing Wang | Bowen Zhang | Minglong Huang | Xianbao Shi | Jin Sun | Zhonggui He | Bingjun Sun
Source: Nano Research (article, 2024-12-16)
Field: Materials Science — Biomaterials

Branched module-modified SN38 prodrug nanoassemblies for improved colorectal cancer therapy: Effectively balance efficacy and safety The clinical utility of irinotecan is restricted by individual variability in carboxylesterase expression. Direct administration of its active metabolite, 7-ethyl-10-hydroxycamptothecin (SN38), presents an appealing alternative due to its potent anti-tumor efficacy. However, the undesirable properties of SN38, such as poor water solubility and non-target toxicity, present significant hurdles to its clinical development. Prodrug nanoassemblies based on modular design strategy show promise in overcoming these challenges by enhancing drug delivery and selective activation. In modular design, the modification module plays a crucial role in improving the self-assembly capability of prodrugs. While current studies mainly focus on using straight aliphatic chains for prodrug design, branched aliphatic chains emerge as superior alternatives warranting further investigation. In this study, we selected 2-heptylundecanol (BAlc<sub>18</sub>) as modification module to construct an SN38 prodrug. Through exquisite design, SN38-SS-BAlc<sub>18</sub> NPs integrated prominent properties in self-assembly capability, specific activation and biocompatibility, resolving the challenges of irinotecan and SN38, ultimately demonstrating excellent anti-tumor efficacy. This exploration enriched the design theory of prodrug nanoassemblies that can effectively balance safety and colorectal anti-tumor efficacy. Prodrug ; Colorectal cancer ; Medicine ; Balance (ability) ; Nanotechnology ; Cancer ; Materials science ; Pharmacology ; Internal medicine ; Physical therapy Nanoparticle-Based Drug Delivery ; Nanoplatforms for cancer theranostics ; Advanced Nanomaterials in Catalysis
Authors: Nilakshman Sooriyaperakasam
Source: Journal of Computers Mechanical and Management (article, 2024-08-04)
Field: Materials Science — Biomaterials

Applications of Tissue Engineering This article is written from a beginner's perspective to elucidate the concept of tissue engineering through its applications. It elaborates on the role of tissue engineering in burn skin treatment and drug delivery systems for cancer therapy. The first part of this article discusses the challenges and current issues related to burn injuries and the engineered techniques for their treatment. It highlights the need for scaffolds in skin tissue regeneration, along with the materials and methods used for treatment. The second part focuses on drug delivery mechanisms in tissue engineering, specifically in cancer treatments, explaining the carrier and release mechanisms of drugs targeting cancer cells. Most information was gathered from scientific articles, following the selection of focused applications. The basics of these applications were studied and explained in layman's terms, forming the foundation for an application-based learning experience. Personal reflections and comments are synthesized in the conclusion, making it accessible for those who want to learn about tissue engineering at a glance. Tissue engineering ; Computer science ; Computational biology ; Engineering ; Biomedical engineering ; Biology Electrospun Nanofibers in Biomedical Applications ; Bone Tissue Engineering Materials ; Tissue Engineering and Regenerative Medicine
Authors: Shahnaz Sargazi | Ali Asghar Ebrahimi | Mohammad Taghi Ghaneian | Mashaallah Rahmani
Source: Research Square (preprint, 2024-03-07)
Field: Chemistry — Analytical Chemistry

Removal of anionic dyes utilizing Box-Behnken design and cloud point extraction coupled with derivative spectrophotometry <title>Abstract</title> Cloud point extraction (CPE) was used in this work to eliminate anionic dyes, Cresol red and Methyl orange, in the form of binary combinations. To remove these dyes from aqueous solutions, Triton X-100 was utilized. We chose wavelengths of 365 nm and 520 nm for Cresol red and Methyl orange, respectively, using a derivative spectrophotometer and first-order derivatives. The response surface methodology was then utilized to ascertaint he effect of surfactant concentration, temperature, and time on the dyes' elimination processes. The quadratic mathematical model obtained from the Box-Behnken design (BBD) matrix was used and developed to estimate the influence of each variable and its relationship with the elimination parameters. Using model equations and comparison between predicted and empirical values, coefficients of determination (R<sup>2</sup>) bigger than 0.97 were obtained. By applying variance analysis, significance and anticipation of models were validated, and process variables were estimated. The data demonstrate that the mentioned dyes adsorption may be described using the model of pseudo-first-order in kinetic modelling. The data illustrates that the analyzed dyes adhere to the Langmuir model, with a correlation value of 0.86 for Cresol red and 0.87 for Methyl orange. The monolayer capacity (Q<sub>max</sub>) was determined to be 0.77 mol/mol for Cresol red and 26.41 mol/mol for Methyl orange. Box–Behnken design ; Cloud point ; Spectrophotometry ; Extraction (chemistry) ; Derivative (finance) ; Chemistry ; Chromatography ; Response surface methodology Analytical chemistry methods development ; Adsorption and biosorption for pollutant removal ; Dye analysis and toxicity
Authors: G. Yokeswari | I. Paulraj Jayasimman | Michael E. G. Lyons | Marwan Abukhaled | L. Rajendran
Source: European Journal of Pure and Applied Mathematics (article, 2024-04-30)
Field: Chemistry — Electrochemistry

Nonlinear Reaction-Diffusion and Mediated Electron Transfer Process at Conducting Polymer Modified Ultramicroelectrodes The primary goal of this article is to present novel analytical solutions for the coupled nonlinear equation found in the mediated electron transfer process at polymer-modified conducting ultramicroelectrodes. Taylor’s series method is utilized to obtain approximate analytical solutions for the reaction-diffusion equations, allowing for the determination of the substrate and mediator concentrations and the current response concerning the substrate concentration at the electrode’s surface. The impact of different factors on concentration and current is also explored. The derived analytical results are in strong agreement with numerical results and with other analytical outcomes from the literature. Nonlinear system ; Diffusion ; Mathematics ; Electron transfer ; Transfer (computing) ; Electron ; Process (computing) ; Polymer ; Diffusion process ; Chemical physics ; Statistical physics ; Chemical engineering ; Nanotechnology ; Materials science ; Thermodynamics ; Chemistry ; Physical chemistry ; Quantum mechanics ; Physics ; Computer science ; Composite material Electrochemical Analysis and Applications ; Analytical Chemistry and Sensors ; Conducting polymers and applications
Authors: F. L. Luo | Xujiao Tian | Xian Dong | Longchao Liang | Zhuo Chen
Source: Acta chimica slovenica (article, 2024-09-20)
Field: Materials Science — Materials Chemistry

Preparation of Porous Imidazole-based Poly(ionic liquid) Adsorbents and Their Toluene Adsorption Performance Efficient, economical, and durable adsorbents are required to remove volatile organic compounds (VOCs) from air. Cross-linked polyvinylic ionic liquids (PVIC) with porous structures were synthesized by quaternizing 1-vinylimidazole (1VI) with 1-bromobutane to obtain 3-butyl-1-vinylimidazolium bromide (VIC), which was then co-polymerized with divinylbenzene (DVB) radicals. 1H NMR, 13C NMR, scanning electron microscopy, X-ray photoelectron spectroscopy, Fourier-transform infrared spectroscopy, and N2 adsorption-desorption isotherms were applied in characterizing the composites. Through modification of the polymer structure by adjustment of DVB concentration（the ratio of DVB concentration to VIC concentration was x: 1 (x=0.4, 0.6, 0.8, 1.0) and the product was named PVIC-s (s=2, 3, 4, 5)）, the optimal PVIC-4 pore structure was obtained, with a specific surface area and total pore volume of 192.5 m2 g-1 and 0.192 cm3 g-1, respectively. A toluene adsorption test verified the adsorption capacity. The adsorption behavior for VOCs, based on toluene, was investigated using adsorption breakthrough curves, adsorption kinetics, and isotherms. The adsorption process is well describing by the Bangham kinetic and Langmuir isotherm models. The dynamic adsorption of toluene followed the order PVIC-4 > PVIC-5 > PVIC-3 > PVIC-2. The optimum toluene adsorption by PVIC-4 was 264.4 mg g-1 as a result of its excellent pore structure. PVIC-4 also performed well in terms of recovery and has potential for the removal of VOCs from air. Adsorption ; Divinylbenzene ; Toluene ; Ionic liquid ; Chemistry ; Langmuir adsorption model ; Desorption ; Fourier transform infrared spectroscopy ; X-ray photoelectron spectroscopy ; Chemical engineering ; Materials science ; Organic chemistry ; Polymer ; Styrene ; Catalysis ; Copolymer Catalytic Processes in Materials Science ; Mesoporous Materials and Catalysis ; Ionic liquids properties and applications