Journal of Cluster Science最新文献

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Chitosan/PEO/NiFe2O4 Composite for the Removal of Methyl Orange Dye from Aqueous Solutions: the Effect of NiFe2O4 Nanoparticle Size 壳聚糖/PEO/NiFe2O4复合材料去除水中甲基橙染料:纳米NiFe2O4粒径的影响
IF 2.7 4区 化学
Journal of Cluster Science Pub Date : 2024-12-27 DOI: 10.1007/s10876-024-02752-4
Júlia Audrem Gomes de Oliveira Fadul, Djalma Souza, Marcelo Pagnola, Ricardo Martínez-García
{"title":"Chitosan/PEO/NiFe2O4 Composite for the Removal of Methyl Orange Dye from Aqueous Solutions: the Effect of NiFe2O4 Nanoparticle Size","authors":"Júlia Audrem Gomes de Oliveira Fadul,&nbsp;Djalma Souza,&nbsp;Marcelo Pagnola,&nbsp;Ricardo Martínez-García","doi":"10.1007/s10876-024-02752-4","DOIUrl":"10.1007/s10876-024-02752-4","url":null,"abstract":"<div><p>This manuscript presents a simple method to obtaining a chitosan/PEO/NiFe<sub>2</sub>O<sub>4</sub> composite with photocatalytic activity under sunlight for the Methyl Orange organic dye degradation. Such composite is made up of two polymers that form a matrix containing nickel ferrite nanoparticles, NiFe<sub>2</sub>O<sub>4</sub>. The polymeric matrix is made up of 70% chitosan and 30% polyethylene oxide (PEO). Due to its chemical structure and microstructure, each polymer provides specific properties to the chitosan/PEO/NiFe<sub>2</sub>O<sub>4</sub> film. The PEO provides mechanical stability to the polymeric substrate and the chitosan provides catalytic properties for the removal of the organic dye. NiFe<sub>2</sub>O<sub>4</sub> nanoparticles are a semiconductor oxide with photocatalytic activity in the range of the visible radiation (bandgap of 1.9 eV); therefore, the dye degradation occurs under sunlight. These NiFe<sub>2</sub>O<sub>4</sub> nanoparticles (NP) are obtained with different NP average size (around 10, 12, and 19 nm). The effect of NiFe<sub>2</sub>O<sub>4</sub> nanoparticles sizes on the properties of the composites, its thermal stability, and on the photocatalytic degradation of the organic dye is analyzed. The photocatalysis test is performed by introducing the chitosan/PEO/NiFe<sub>2</sub>O<sub>4</sub> films into the methyl orange aqueous solution and irradiating them with sunlight for 1 h. The samples are characterized from the structural and morphological point of view, thermal stability, and percentage of photocatalytic degradation of the dye after 1 h of exposure to sunlight. X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), thermogravimetric analysis (TGA), and ultraviolet-visible spectroscopy (UV-VIS) are used to carry out the study.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":618,"journal":{"name":"Journal of Cluster Science","volume":"36 1","pages":""},"PeriodicalIF":2.7,"publicationDate":"2024-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142890459","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Statistical Investigation of Factors Affecting the Growth of Carbon Nanotubes in the Chemical Vapor Deposition (CVD) Processes 化学气相沉积(CVD)工艺中影响碳纳米管生长因素的统计研究
IF 2.7 4区 化学
Journal of Cluster Science Pub Date : 2024-12-26 DOI: 10.1007/s10876-024-02726-6
Elahe Khosravifard, Mohammad Taghi Hamed Mosavian, Morteza Maghrebi
{"title":"Statistical Investigation of Factors Affecting the Growth of Carbon Nanotubes in the Chemical Vapor Deposition (CVD) Processes","authors":"Elahe Khosravifard,&nbsp;Mohammad Taghi Hamed Mosavian,&nbsp;Morteza Maghrebi","doi":"10.1007/s10876-024-02726-6","DOIUrl":"10.1007/s10876-024-02726-6","url":null,"abstract":"<div><p>Carbon nanotubes (CNTs) exhibit exceptional properties, making them invaluable across various industries. Chemical vapor deposition (CVD) is one of the most widely used methods for producing CNTs. This study investigates key factors such as temperature, pressure, and carbon source that influence CNT synthesis. By understanding and controlling these parameters, significant improvements in CNT growth can be achieved. However, CNT growth is influenced by multiple interrelated factors, which complicates the identification of optimal conditions for each individual factor. These variables often interact and are not independent. In this research, we provide a comprehensive review of the critical factors affecting CNT growth to aid researchers in achieving more successful CNT synthesis.</p></div>","PeriodicalId":618,"journal":{"name":"Journal of Cluster Science","volume":"36 1","pages":""},"PeriodicalIF":2.7,"publicationDate":"2024-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142889610","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Biosynthesis of ZnO Nanoparticles Using Washingtonia filifera Seed Extract and Assessment of Their Anti-Inflammatory and Antimicrobial Efficacy 用白荆籽提取物合成氧化锌纳米粒子及其抗炎和抗菌效果评价
IF 2.7 4区 化学
Journal of Cluster Science Pub Date : 2024-12-25 DOI: 10.1007/s10876-024-02761-3
Parwin J. Jalil, Renjbar M. Mhamedsharif, Bushra H. Shnawa, Samir M. Hamad, Peyman Aspoukeh, Khanzad W. Wsu, Sida M. Muhammedsharif, Mukhtar H. Ahmed
{"title":"Biosynthesis of ZnO Nanoparticles Using Washingtonia filifera Seed Extract and Assessment of Their Anti-Inflammatory and Antimicrobial Efficacy","authors":"Parwin J. Jalil,&nbsp;Renjbar M. Mhamedsharif,&nbsp;Bushra H. Shnawa,&nbsp;Samir M. Hamad,&nbsp;Peyman Aspoukeh,&nbsp;Khanzad W. Wsu,&nbsp;Sida M. Muhammedsharif,&nbsp;Mukhtar H. Ahmed","doi":"10.1007/s10876-024-02761-3","DOIUrl":"10.1007/s10876-024-02761-3","url":null,"abstract":"<div><p>The green synthesis of nanoparticles represents an eco-friendly and sustainable alternative to conventional chemical and physical synthesis methods. This approach minimizes the use of hazardous chemicals and leverages biological resources, aligning with the principles of green chemistry. This study aimed to characterise the green synthesised ZnONPs and evaluate their antimicrobial and anti-inflammatory activities. ZnONPs were synthesised using <i>Washingtonia filifera seed</i> extract and characterised using Scanning Electron Microscopy (SEM), UV–Vis spectroscopy, Fourier Transform Infrared (FT-IR) spectroscopy, energy-dispersive spectroscopy (EDX), and X-ray diffraction (XRD). Their antimicrobial activity against bacteria and fungi, as well as their anti-inflammatory potency, were assessed. SEM data revealed that the ZnONPs, fabricated with palm seed extract metabolites, were spherical with an average size of 50 nm. FT-IR analysis identified varied absorption peaks related to the functional groups of the plant extract and nanoparticles. The antimicrobial activity was dose-dependent, with <i>Staphylococcus aureus</i> and <i>Escherichia coli</i> showing inhibition zones of 8.5 ± 0.7 mm and 11.8 ± 0.3 mm, respectively, at 500 µg/mL. <i>Pseudomonas aeruginosa</i> exhibited a notable inhibition zone of 20.4 ± 0.7 mm. The ZnONPs also inhibited fungal mycelium growth. The in vitro anti-inflammatory activity of ZnONPs showed a concentration-dependent increase, with an 89.15% inhibition of RBC haemolysis at 110 µg/mL. The green synthesised ZnONPs demonstrated significant antimicrobial activity against clinical pathogens and potent anti-inflammatory effects, suggesting that this eco-friendly method could be a promising strategy for developing versatile biomedical products.</p></div>","PeriodicalId":618,"journal":{"name":"Journal of Cluster Science","volume":"36 1","pages":""},"PeriodicalIF":2.7,"publicationDate":"2024-12-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142890528","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Rational Design of Novel Tantalum Based (CuTaS3/AgTaS3) Heterostructures for Photocatalytic and Electrocatalytic Hydrogen Production 新型钽基(CuTaS3/AgTaS3)异质结构光催化和电催化制氢的合理设计
IF 2.7 4区 化学
Journal of Cluster Science Pub Date : 2024-12-25 DOI: 10.1007/s10876-024-02744-4
V. Velarasan, P. Puviarasu, P. Sujita, Sethumathavan Vaauthorel
{"title":"Rational Design of Novel Tantalum Based (CuTaS3/AgTaS3) Heterostructures for Photocatalytic and Electrocatalytic Hydrogen Production","authors":"V. Velarasan,&nbsp;P. Puviarasu,&nbsp;P. Sujita,&nbsp;Sethumathavan Vaauthorel","doi":"10.1007/s10876-024-02744-4","DOIUrl":"10.1007/s10876-024-02744-4","url":null,"abstract":"<div><p>The present investigation successfully synthesized a novel tantalum-based CuTaS<sub>3</sub>/AgTaS<sub>3</sub> heterostructure using D-penicillamine as a sulfur source and investigated its hydrogen evolution capability using both photocatalytic and electrocatalytic methods. The structural and morphological features were examined using XRD, Raman, FT-IR, TEM and SEM with EDS analysis, respectively. The UV-DRS results ascertain the visible-light response and bandgap of the synthesized materials. Combining AgTaS<sub>3</sub> with CuTaS<sub>3</sub> reduced the recombination rate, as revealed by the photocurrent measurements of the materials. The photocatalytic hydrogen production for the as-synthesized materials was investigated by consuming Na<sub>2</sub>S + Na<sub>2</sub>SO<sub>3</sub> as a sacrificial reagent. The CuTaS<sub>3</sub> with 5% of the best AgTaS<sub>3</sub> loading gives off the most H<sub>2</sub> evolution rate, 1430 µmol/g, after 5 h of being exposed to visible light. Furthermore, the electrocatalytic measurements were performed to assess the CuTaS<sub>3</sub>/AgTaS<sub>3</sub> heterostructure for water-splitting hydrogen evolution reactions (HER). The results displayed that the enhanced HER reactivity with lower overpotentials and Tafel slope when heterostructure was formed. The higher double-layer capacitance (C<sub>dl</sub>) value shows how many more active sites were formed after AgTaS<sub>3</sub> was combined with CuTaS<sub>3</sub>. These results confirmed that the CuTaS<sub>3</sub>/AgTaS<sub>3</sub> heterostructure generated H<sub>2</sub> effectively in both electrocatalytic and photocatalytic processes. The present work may bring innovative perceptions for the advancement of tantalum-based sulfide materials for green hydrogen production.</p></div>","PeriodicalId":618,"journal":{"name":"Journal of Cluster Science","volume":"36 1","pages":""},"PeriodicalIF":2.7,"publicationDate":"2024-12-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142890534","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Synthesis, Characterization, and Functional Analysis of Mixed Manganese/Cerium Oxide/Hydroxyapatite Nanocomposites for Antibacterial Applications 用于抗菌应用的混合锰/氧化铈/羟基磷灰石纳米复合材料的合成、表征和功能分析
IF 2.7 4区 化学
Journal of Cluster Science Pub Date : 2024-12-19 DOI: 10.1007/s10876-024-02750-6
Sakuntala Siri-Udom, Orrasa Prasitnok, Khongvit Prasitnok, Pongtanawat Khemthong, Chaiyasit Phawa, Wuttichai Roschat, Songkot Utara, Narid Prachumrak, Jiyapa Sripirom, Piaw Phatai
{"title":"Synthesis, Characterization, and Functional Analysis of Mixed Manganese/Cerium Oxide/Hydroxyapatite Nanocomposites for Antibacterial Applications","authors":"Sakuntala Siri-Udom,&nbsp;Orrasa Prasitnok,&nbsp;Khongvit Prasitnok,&nbsp;Pongtanawat Khemthong,&nbsp;Chaiyasit Phawa,&nbsp;Wuttichai Roschat,&nbsp;Songkot Utara,&nbsp;Narid Prachumrak,&nbsp;Jiyapa Sripirom,&nbsp;Piaw Phatai","doi":"10.1007/s10876-024-02750-6","DOIUrl":"10.1007/s10876-024-02750-6","url":null,"abstract":"<div><p>Mixed manganese/cerium oxide/hydroxyapatite composites are emerging as innovative materials with significant biomedical potential due to their antibacterial properties and biocompatibility. In this study, we synthesized mixed Mn/Ce oxide/HA composites using an ultrasonic-assisted sol-gel method, exploring their structural and functional characteristics through comprehensive analyses. Advanced characterization techniques, including X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FT-IR), X-ray absorption spectroscopy (XAS), scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDS), and nitrogen adsorption-desorption isotherms, revealed a composite with enhanced structural stability and porosity, optimized for antibacterial applications. XRD confirmed the integration of a fluorite-structured CeO<sub>2</sub> phase with hexagonal hydroxyapatite, while FT-IR and XANES analyses verified the presence of functional phosphate groups and mixed oxidation states (Ce<sup>3+</sup>/Ce<sup>4+</sup>, Mn<sup>2+</sup>/Mn<sup>3+</sup>/Mn<sup>4+</sup>), essential for antibacterial efficacy. SEM imaging displayed a unique flake-like morphology conducive to clustering, and EDS confirmed elemental composition. Notably, nitrogen sorption isotherms revealed a marked increase in surface area from 2 m²/g in pure HA to 11–16 m²/g in Mn/Ce oxide/HA, which may enhance bacterial interaction. Antibacterial assays demonstrated potent activity against <i>Bacillus cereus</i> (<i>B. cereus</i>), <i>Staphylococcus aureus (S. aureus)</i>, <i>Staphylococcus epidermidis (S. epidermidis)</i>, <i>Escherichia coli (E. coli)</i>, and <i>Salmonella typhi (S. typhi)</i>, linked to reactive oxygen species production and bacterial membrane disruption. This study highlights the robust structural and antibacterial features of Mn/Ce oxide/HA composites, advancing their suitability for biomedical applications, particularly in infection-resistant materials and bone grafts.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":618,"journal":{"name":"Journal of Cluster Science","volume":"36 1","pages":""},"PeriodicalIF":2.7,"publicationDate":"2024-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142859754","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Pharmacokinetics and Brain Tumor Delivery Studies of Thymoquinone-Encapsulated Eudragit L100-Coated Solid-Lipid Nanoparticles 百里香醌包封的苦楝油l100固体脂质纳米颗粒的药代动力学及脑肿瘤递送研究
IF 2.7 4区 化学
Journal of Cluster Science Pub Date : 2024-12-19 DOI: 10.1007/s10876-024-02751-5
Jeganpandi Senthamarai Pandi, Parasuraman Pavadai, Lakshmi M. Sundar, Murugesan Sankaranarayanan, Theivendren Panneerselvam, Sureshbabu Ram Kumar Pandian, Selvaraj Kunjiappan
{"title":"Pharmacokinetics and Brain Tumor Delivery Studies of Thymoquinone-Encapsulated Eudragit L100-Coated Solid-Lipid Nanoparticles","authors":"Jeganpandi Senthamarai Pandi,&nbsp;Parasuraman Pavadai,&nbsp;Lakshmi M. Sundar,&nbsp;Murugesan Sankaranarayanan,&nbsp;Theivendren Panneerselvam,&nbsp;Sureshbabu Ram Kumar Pandian,&nbsp;Selvaraj Kunjiappan","doi":"10.1007/s10876-024-02751-5","DOIUrl":"10.1007/s10876-024-02751-5","url":null,"abstract":"<div><p>Brain tumor is one of the deadliest types of cancer in the world. The basic necessity of brain tumor-targeted therapy is to reach and accumulate the required quantity in the tumor microenvironment while maintaining therapeutic efficacy. In this regard, the current study sought to create thymoquinone-encapsulated Eudragit L100-coated solid lipid nanoparticles (TQ-encapsulated E-SLNs) for the transport of loaded thymoquinone (TQ) to the brain. TQ-encapsulated E-SLNs were formulated using the oil-in-water microemulsion process, and their physicochemical properties were investigated. TQ encapsulation, loading capacity, and release behavior of E-SLNs were also investigated. In vivo biodistribution studies were conducted to assess TQ delivery and accumulation in several organs of female Wistar rats. The TQ-encapsulated E-SLNs were mostly spherical with a crystalline structure and extremely stable in the physiological buffer system. The highest content of TQ was released in pH 5.5 (78.215 ± 0.749%) at 22 h. The pharmacokinetics and biodistribution investigations revealed that released TQ from TQ-encapsulated E-SLNs after 48 h of administration accumulated 16.5 ± 1.5% in brain, 21.167 ± 1.041% in kidneys, 12.125 ± 0.781% in heart, 16.375 ± 1.317% in liver, 13.5 ± 1.8% in lungs, and 17.15 ± 1.5%. Later, molecular modeling studies revealed that TQ had a greater binding energy of -7.8 kcal/mol to EGFR. Thymoquinone binding energy was very close to the reference drug Temozolomide. Molecular dynamics simulation studies showed that the TQ-EGFR docked complex was extremely stable up to 100 ns. The findings showed that the fabricated TQ-encapsulated E-SLNs remained unchanging in circulation for up to five days. Therefore, E-SLNs fabrications show promise as a method for targeting brain malignancies across the BBB.</p></div>","PeriodicalId":618,"journal":{"name":"Journal of Cluster Science","volume":"36 1","pages":""},"PeriodicalIF":2.7,"publicationDate":"2024-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142859756","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Eco-Friendly Alginate-Coated Nano Iron Oxide-Graphene Oxide Nanocomposite for High-Performance Adsorption and Photocatalytic Detoxification of Harmful Dyes in Wastewater Treatment 用于高性能吸附和光催化解毒废水中有害染料的生态友好型海藻酸盐包覆纳米氧化铁-氧化石墨烯纳米复合材料
IF 2.7 4区 化学
Journal of Cluster Science Pub Date : 2024-12-19 DOI: 10.1007/s10876-024-02740-8
Mahmoud F. Mubarak, Abeer Adaileh, Inas A. Ahmed, Mohamed A. Ali, Mohamed Hemdan
{"title":"Eco-Friendly Alginate-Coated Nano Iron Oxide-Graphene Oxide Nanocomposite for High-Performance Adsorption and Photocatalytic Detoxification of Harmful Dyes in Wastewater Treatment","authors":"Mahmoud F. Mubarak,&nbsp;Abeer Adaileh,&nbsp;Inas A. Ahmed,&nbsp;Mohamed A. Ali,&nbsp;Mohamed Hemdan","doi":"10.1007/s10876-024-02740-8","DOIUrl":"10.1007/s10876-024-02740-8","url":null,"abstract":"<div><p>This research presents the development of an innovative and eco-friendly composite material, Alginate-Coated Nano Iron Oxide-Graphene Oxide (Alg-Fe<sub>3</sub>O<sub>4</sub>@GO), designed to enhance the adsorption and photocatalytic degradation of cationic dyes in wastewater treatment. The composite combines the biocompatibility of alginate with the high surface area and photocatalytic properties of graphene oxide and nano iron oxide. A comprehensive evaluation of the Alg-Fe<sub>3</sub>O<sub>4</sub>@GO composite was conducted to assess its efficiency in removing Methylene Blue (MB) and Malachite Green (MG) from aqueous solutions. Characterization techniques, including X-ray Diffraction (XRD), Scanning Electron Microscopy (SEM), Fourier Transform Infrared Spectroscopy (FTIR), Transmission Electron Microscopy (TEM), Brunauer-Emmett-Teller (BET) surface area analysis, and Thermogravimetric Analysis (TGA), confirmed its structural and functional properties. BET analysis indicated a significant surface area of 317.8 m<sup>2</sup>/g, suggesting substantial adsorption capacity. Adsorption experiments revealed a maximum capacity of 163.8 mg/g for MB, achieving a removal efficiency of 98.5%, and 107.5 mg/g for MG, with a removal efficiency of 90.8% after 240 min of contact time at an initial dye concentration of 100 mg/L for both dyes. Kinetic studies indicated that the adsorption followed the Pseudo-Second Order model (R<sup>2</sup> &gt; 0.99 for both dyes), while equilibrium data fitted well with the Langmuir Isotherm Model, indicating monolayer adsorption. Thermodynamic analysis indicated that the adsorption process was endothermic, with enthalpy changes of ΔH° = +25.33 kJ/mol for MB and ΔH° = +20.83 kJ/mol for MG, alongside a spontaneous nature (ΔG° &lt; 0). Photocatalytic tests under visible light showed dye degradation efficiencies of 85.0% for MB and 78.0% for MG within 120 min. The composite retained over 85% of its initial adsorption capacity after six regeneration cycles, underscoring its potential as a sustainable, high-performance material for wastewater treatment.</p></div>","PeriodicalId":618,"journal":{"name":"Journal of Cluster Science","volume":"36 1","pages":""},"PeriodicalIF":2.7,"publicationDate":"2024-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142859757","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Dynamics of Sorption Processes at Physical Synthesis of Iron Nanoparticles 铁纳米粒子物理合成吸附过程动力学研究
IF 2.7 4区 化学
Journal of Cluster Science Pub Date : 2024-12-19 DOI: 10.1007/s10876-024-02743-5
Yurii A. Kurapov, Stanislav Ye. Lytvyn, Gennadii G. Didikin, Olena I. Oranska, Sergei M. Romanenko
{"title":"Dynamics of Sorption Processes at Physical Synthesis of Iron Nanoparticles","authors":"Yurii A. Kurapov,&nbsp;Stanislav Ye. Lytvyn,&nbsp;Gennadii G. Didikin,&nbsp;Olena I. Oranska,&nbsp;Sergei M. Romanenko","doi":"10.1007/s10876-024-02743-5","DOIUrl":"10.1007/s10876-024-02743-5","url":null,"abstract":"<div><p>Scanning and transmission electron microscopy, powder X-ray diffraction and thermogravimetric analyses were used to study the dynamics of the sorption processes of ligand-free iron nanoparticles produced by highly efficient physical synthesis, namely, the molecular beam method. The structure, chemical and phase composition of Fe-NaCl condensates with different iron contents, crystallite dimensions (nanoparticles) and nanoparticle surface areas depending on the condensation temperature, which characterize the sorption capacity, primarily for moisture and oxygen, were studied. Finally, the gravimetric analysis method was used to investigate the kinetics of the relative change in the weight of porous Fe–NaCl condensates with different iron contents, depending on the condensation temperature. With increasing synthesis temperature, the nanoparticle size increases, and the specific surface area decreases. Therefore, by changing the size of the nanoparticles at the same volume, we can regulate the ratio of the nanoparticle surface to the nanoparticle volume, i.e., change the properties of the reaction surface and, in this way, the contribution of the excess surface energy to the total free energy of the system. The mass fraction of physically adsorbed and bound oxygen (moisture) correlates with the size (area, surface) of the nanoparticles.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div><div><p>Sorption of oxygen and water by EB PVD ligand-free Fe@Fe<sub>3</sub>O<sub>4</sub> nanoparticle in open matrix nanopore</p></div></div></figure></div></div>","PeriodicalId":618,"journal":{"name":"Journal of Cluster Science","volume":"36 1","pages":""},"PeriodicalIF":2.7,"publicationDate":"2024-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142859755","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Synergistic Photocatalytic Remediation Using Heterostructure Fe2O3/BiVO4 Composites: A Sustainable Solution 异质结构Fe2O3/BiVO4复合材料的协同光催化修复:一个可持续的解决方案
IF 2.7 4区 化学
Journal of Cluster Science Pub Date : 2024-12-19 DOI: 10.1007/s10876-024-02747-1
Weerasak Chomkitichai, Putthadee Ubolsook, Pongthep Jansanthea
{"title":"Synergistic Photocatalytic Remediation Using Heterostructure Fe2O3/BiVO4 Composites: A Sustainable Solution","authors":"Weerasak Chomkitichai,&nbsp;Putthadee Ubolsook,&nbsp;Pongthep Jansanthea","doi":"10.1007/s10876-024-02747-1","DOIUrl":"10.1007/s10876-024-02747-1","url":null,"abstract":"<div><p>This study presents the novel development of heterostructure Fe<sub>2</sub>O<sub>3</sub>/BiVO<sub>4</sub> composites as efficient photocatalysts, specifically utilizing a 20-W UV-A lamp for low-energy, sustainable environmental remediation. The combination of Fe<sub>2</sub>O<sub>3</sub> and BiVO<sub>4</sub> produces a composite with enhanced photocatalytic performance through synergistic interactions. The composites were synthesized through a hydrothermal process with varied Fe ratios, followed by calcination. Characterization techniques, including XRD, SEM, TEM, EDS, XPS, BET surface area analysis, UV-DRS, and PL, confirmed composite formation, optimal particle dispersion, and improved surface properties. UV-DRS showed visible light absorption (bandgap energies: 2.27–2.47 eV), and PL confirmed effective charge separation critical for photocatalysis. Under low-power UV-A irradiation, the composite achieved 98.74% degradation of methylene blue (MB) with a rate constant of 0.0270 min⁻<sup>1</sup>, outperforming the individual Fe<sub>2</sub>O<sub>3</sub> and BiVO<sub>4</sub> components. This work demonstrates the potential of heterostructure Fe<sub>2</sub>O<sub>3</sub>/BiVO<sub>4</sub> composites as eco-friendly, high-efficiency photocatalysts, offering a sustainable approach to environmental cleanup and advancing the application of low-energy photocatalytic systems in broader photocatalysis fields.</p></div>","PeriodicalId":618,"journal":{"name":"Journal of Cluster Science","volume":"36 1","pages":""},"PeriodicalIF":2.7,"publicationDate":"2024-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142859702","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Advances in Polyoxometalate-Based Catalysts for Catalytic Decontamination of Nerve Agents 多金属氧酸盐基催化剂在神经毒剂催化净化中的研究进展
IF 2.7 4区 化学
Journal of Cluster Science Pub Date : 2024-12-16 DOI: 10.1007/s10876-024-02748-0
Aiping Gao, Hai-Lou Li, Xinhua Cao
{"title":"Advances in Polyoxometalate-Based Catalysts for Catalytic Decontamination of Nerve Agents","authors":"Aiping Gao,&nbsp;Hai-Lou Li,&nbsp;Xinhua Cao","doi":"10.1007/s10876-024-02748-0","DOIUrl":"10.1007/s10876-024-02748-0","url":null,"abstract":"<div><p>Polyoxometalates (POMs), a class of discrete metal-oxo clusters with diverse structures and properties, are used in energy, biology, catalysis, and sensing applications, as well as in material design and assembly. POM-based catalysts, which have adjustable compositions and abundant available structures, have useful characteristics, such as having a tunable acid-base, being redox stable, being recyclable, and having sustainable features. Nerve agents are a type of chemical warfare agent (CWA) which are easily available and pose threats to human security and the environment. POM-based catalysts can be used in the catalytic decontamination of nerve agents. This review provides a basic introduction to the catalytic decontamination of nerve agents by POM-based catalysts that are classified according to the methods used for the catalytic degradation of the nerve agents. This review summarizes the breakthroughs in the development of POM-based catalysts for the degradation of CWAs over the past decade and discusses the benefits, challenges, and opportunities in the use of POM-based catalysts for the catalytic decontamination of nerve agents.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div><div><p>This review summarizes research progresses of polyoxometalate-based catalysts on catalytic decontamination of nerve agents in the past decade with an emphasis on the design, structures and their catalyst performances</p></div></div></figure></div></div>","PeriodicalId":618,"journal":{"name":"Journal of Cluster Science","volume":"36 1","pages":""},"PeriodicalIF":2.7,"publicationDate":"2024-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142826279","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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