Nanomaterials and Nanotechnology最新文献

Grewia tenax-Mediated Silver Nanoparticles as Efficient Antibacterial and Antifungal Agents Grewia tenax 介导的银纳米粒子作为高效抗菌剂和抗真菌剂

IF 3.7 3区材料科学

Nanomaterials and Nanotechnology Pub Date : 2024-01-05 DOI: 10.1155/2024/9912599

Priyanka Yadav, Monisha Singhal, Sreemoyee Chatterjee, S. Nimesh, Nidhi Gupta

{"title":"Grewia tenax-Mediated Silver Nanoparticles as Efficient Antibacterial and Antifungal Agents","authors":"Priyanka Yadav, Monisha Singhal, Sreemoyee Chatterjee, S. Nimesh, Nidhi Gupta","doi":"10.1155/2024/9912599","DOIUrl":"https://doi.org/10.1155/2024/9912599","url":null,"abstract":"Nanoparticles have gained immense interest as probable drug molecules against microbial infections. Metal nanoparticles synthesized via exploring the reduction potential and capping activity of plants were found to have remarkable antimicrobial activity. The synthesis was conducted without hazardous chemicals and generation of toxic waste products. The focus of the study was, therefore, to investigate the efficacy of silver nanoparticles biosynthesized using Grewia tenax leaf extract as an antibacterial, antibiofilm, and antifungal therapeutic agent. The silver nanoparticles (GTAgNPs) were synthesized using optimized conditions of 2.5 mM AgNO3 and 1 : 10 ratio of 10% extract at 37°C on continuous stirring. The characterization was done by UV-visible spectroscopy, DLS, SEM, zeta potential, and FTIR. The antibacterial activity of GTAgNPs against both Gram (+) Bacillus cereus and Staphylococcus aureus and Gram (−) Escherichia coli and Pseudomonas aeruginosa bacteria via zone of inhibition, MIC, and MBC was analysed. The inhibitory effect of silver nanoparticles on biofilm formation was also observed against these bacteria. These nanoparticles were then evaluated for their potential antifungal activity against Candida albicans and Aspergillus niger by observing fungal growth inhibition. The probable mechanism of antimicrobial activity by GTAgNPs was studied by scanning electron microscopy which showed the significant formation of pores on the cell surface in GTAgNPs-treated microbial cells, leading to the death of the microbial cell. All these studies concluded that GTAgNPs possess the potent antimicrobial potential and can be employed as antimicrobial therapeutic agents.","PeriodicalId":19018,"journal":{"name":"Nanomaterials and Nanotechnology","volume":"39 23","pages":""},"PeriodicalIF":3.7,"publicationDate":"2024-01-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139382466","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Material Removal Mechanism and Evolution of Subsurface Defects during Nanocutting of Monocrystalline Cu 单晶铜纳米切割过程中的材料去除机制和表面下缺陷演变

IF 3.7 3区材料科学

Nanomaterials and Nanotechnology Pub Date : 2023-12-13 DOI: 10.1155/2023/6633411

Bing Liu, Yurong Wang, Haijie Yang

{"title":"Material Removal Mechanism and Evolution of Subsurface Defects during Nanocutting of Monocrystalline Cu","authors":"Bing Liu, Yurong Wang, Haijie Yang","doi":"10.1155/2023/6633411","DOIUrl":"https://doi.org/10.1155/2023/6633411","url":null,"abstract":"Multigroup large-scalenanocutting models of monocrystalline Cu were established by molecular dynamics simulations to investigate the influence of cutting parameters on the material removal mechanism. The formation and distribution of subsurface defect structures were revealed, and the evolution behavior of the complete prismatic dislocation loop was analyzed in depth. It was demonstrated that the chips and machined surface of monocrystalline Cu were mainly formed under the coupling effect of shearing and extrusion forces. A diamond tool with a larger edge radius or a negative rake angle could produce a noticeable suppression on the chip formation. The corresponding relationship between the location of defect atoms and the distribution of von Mises stress was studied, which indicated that the shear stress would become larger at the subgrain boundaries, dislocation lines, and the amorphous atoms than that in their nearby regions. The complete prismatic dislocation loop was formed by cross-slip between two sets of stacking faults; meanwhile, the generated multiple Lomer–Cottrell locks hindered its movement and promoted the work-hardening phenomenon. These research results are of great theoretical value to enrich the nanocutting mechanism and technology of plastic materials.","PeriodicalId":19018,"journal":{"name":"Nanomaterials and Nanotechnology","volume":"53 1","pages":""},"PeriodicalIF":3.7,"publicationDate":"2023-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139004205","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Rapid Colorimetric Detection of Hg (II) Based on Hg (II)-Induced Suppressed Enzyme-Like Reduction of 4-Nitrophenol by Au@ZnO/Fe3O4 in a Cosmetic Skin Product 基于Au@ZnO/Fe3O4抑制Hg (II)诱导4-硝基酚类酶还原的美容护肤品中Hg (II)的快速比色检测

3区材料科学

Nanomaterials and Nanotechnology Pub Date : 2023-11-11 DOI: 10.1155/2023/3603680

Oratile Semong, Bareki Shima Batlokwa

{"title":"Rapid Colorimetric Detection of Hg (II) Based on Hg (II)-Induced Suppressed Enzyme-Like Reduction of 4-Nitrophenol by Au@ZnO/Fe3O4 in a Cosmetic Skin Product","authors":"Oratile Semong, Bareki Shima Batlokwa","doi":"10.1155/2023/3603680","DOIUrl":"https://doi.org/10.1155/2023/3603680","url":null,"abstract":"Herein, we synthesized gold-coated ZnO/Fe3O4 nanocomposites. Initially, we prepared Fe3O4 magnetic nanoparticles based on the co-precipitation of Fe3+ and Fe2+ under aqueous ammonia as a precipitating agent. Thereafter, the ZnO/Fe3O4 composite was prepared by dispersing the synthesized magnetic nanoparticles into an alkaline zinc nitrate solution. After calcination of the precipitate, the formed ZnO/Fe3O4 composites were coated with gold nanostructures by dispersing the composites in auric acid/ethylene glycol solution in a water bath. The synthesized Au@ZnO/Fe3O4 hybrid material was able to catalyze the reduction of 4-nitrophenol (4-NP) to 4-aminophenol (4-AP). We demonstrate that this catalytic activity can be exploited for the detection of Hg2+ ions in a cosmetic product. In the presence of Hg2+ ions, the catalytic activity of Au@ZnO/Fe3O4 was greatly suppressed. This novel finding underlies a straightforward, sensitive, and highly selective detection probe for Hg2+. The material exhibited excellent analytical performance as marked by the very low limit of detection (LOD) of 2.34 nM, which was well below acceptable levels of 4.99 μM for mercury in cosmetics as set by the US Food and Drug Administration (FDA), and within the linear dynamic ranges of 0–10 nM. High recoveries ranging from 96.5 to 100.3% accompanied by excellent selectivities toward Hg2+ over potentially interfering species were obtained.","PeriodicalId":19018,"journal":{"name":"Nanomaterials and Nanotechnology","volume":"41 16","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135041968","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Nanomaterials in Nanophotonics Structure for Performing All-Optical 2 × 1 Multiplexer Based on Elliptical IMI-Plasmonic Waveguides 基于椭圆等离子体波导的全光2 × 1多路复用器纳米光子结构中的纳米材料

3区材料科学

Nanomaterials and Nanotechnology Pub Date : 2023-11-08 DOI: 10.1155/2023/7790674

Sajjad Mohanad Mustafa, Gholamreza Karimi, Mazdak Rad Malek Shahi, Saif Hasan Abdulnabi

{"title":"Nanomaterials in Nanophotonics Structure for Performing All-Optical 2 × 1 Multiplexer Based on Elliptical IMI-Plasmonic Waveguides","authors":"Sajjad Mohanad Mustafa, Gholamreza Karimi, Mazdak Rad Malek Shahi, Saif Hasan Abdulnabi","doi":"10.1155/2023/7790674","DOIUrl":"https://doi.org/10.1155/2023/7790674","url":null,"abstract":"In this study, an all-optical multiplexer (Mux) based on elliptical insulator-metal-insulator (IMI) plasmonic waveguides is designed. The area of the proposed structure is very small (400 nm × 400 nm) which operates at a wavelength of 1,550 nm. The developed device utilizes constructive and destructive interferences between the input signals and the selector signal. This structure is less complex and has lower loss compared to the previous works. Transmission (T), contrast ratio (CR), modulation depth (MD), insertion loss (IL), and contrast loss (CL) are the five parameters that describe the performance of the plasmonic Mux. The transmission threshold between logic 0 and logic 1 is 0.5. Moreover, the maximum transmission efficiency of the device is 163%. Moreover, based on the MD value of 95.09%, the dimensions of the proposed structure are excellent and optimal. The proposed plasmonic Mux structure contributes substantially to developing an all-optical arithmetic logic unit (ALU) and all-optical signal processing nanocircuits. The finite element method (FEM) simulates the proposed plasmonic multiplexer with COMSOL Multiphysics 5.4 software.","PeriodicalId":19018,"journal":{"name":"Nanomaterials and Nanotechnology","volume":" 26","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135340815","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Low Dimension Elemental and van der Waals Hetetostructures Materials including C Nanostructures and Perovskites 低维元素和范德华异质结构材料，包括碳纳米结构和钙钛矿

3区材料科学

Nanomaterials and Nanotechnology Pub Date : 2023-10-26 DOI: 10.1155/2023/9802519

Paola De Padova, Gurumurthy Hegde

引用次数: 0

Mulberry Juice-Derived Carbon Quantum Dots as a Cu2+ Ion Sensor: Investigating the Influence of Fruit Ripeness on the Optical Properties 桑汁碳量子点作为Cu2+离子传感器:果实成熟度对光学性质的影响

3区材料科学

Nanomaterials and Nanotechnology Pub Date : 2023-09-20 DOI: 10.1155/2023/9980479

Chiayee Salih Ajaj, Diyar Sadiq

{"title":"Mulberry Juice-Derived Carbon Quantum Dots as a Cu2+ Ion Sensor: Investigating the Influence of Fruit Ripeness on the Optical Properties","authors":"Chiayee Salih Ajaj, Diyar Sadiq","doi":"10.1155/2023/9980479","DOIUrl":"https://doi.org/10.1155/2023/9980479","url":null,"abstract":"This study synthesized carbon quantum dots (CQDs) with green photoluminescence through a hydrothermal method that utilized mulberry juice as the carbon source. The influence of fruit ripeness on the physical and chemical properties, focusing on the fluorescence spectra, has been explored. Fourier-transform infrared spectroscopy (FT-IR) and energy dispersive X-ray analysis (EDX) showed that there were oxygen-containing groups, and X-ray diffraction (XRD) showed that the carbon quantum dots (CQDs) were graphitic. The results revealed that the CQDs had an average size of around 7.4 nm and 9.7 nm for unripe and ripe mulberry juice, respectively. These CQDs emitted green light at 500 nm and 510 nm in unripe and ripe mulberry juice, respectively, when excited at a wavelength of 400 nm. The prepared CQDs exhibited excitation-dependent photoluminescence (PL) emission behavior, demonstrating their dependence on the excitation light. The impact of fruit ripeness on optical properties was explored by examining fluorescent spectra from different fruits (including tomato and blackberry), demonstrating comparable behaviors observed in mulberry fruit. In addition, the prepared CQDs were utilized as a fluorescent sensor with high specificity to detect Cu2+ ions. The detection limit (DL) for this sensor was determined to be 0.2687 µM, and the limit of qualification (LOQ) is 0.814 µM. The linear range for detection lies between 0.1 and 1 µM. The selectivity of the CQDs towards Cu2+ ions was confirmed by recording the PL response for Cu2+ ions compared to the weak response of other metal ions. According to these results, the CQDs can be applied in various cellular imaging and biology applications, bio-sensing, optoelectronics, and sensors.","PeriodicalId":19018,"journal":{"name":"Nanomaterials and Nanotechnology","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136307689","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Plectranthus barbatus Leaf Extract-Mediated Synthesis of ZnS and Mg-Doped ZnS NPs: Structural, Optical, Morphological, and Antibacterial Studies barbatus叶提取物介导的ZnS和mg掺杂ZnS NPs的合成:结构、光学、形态和抗菌研究

IF 3.7 3区材料科学

Nanomaterials and Nanotechnology Pub Date : 2023-08-23 DOI: 10.1155/2023/1399904

A. Al-Hammadi, Adnan Alnehia, Annas Al-Sharabi, Abdel-Basit Al-Odayni, Naaser A. Y. Abdu, W. Saeed

{"title":"Plectranthus barbatus Leaf Extract-Mediated Synthesis of ZnS and Mg-Doped ZnS NPs: Structural, Optical, Morphological, and Antibacterial Studies","authors":"A. Al-Hammadi, Adnan Alnehia, Annas Al-Sharabi, Abdel-Basit Al-Odayni, Naaser A. Y. Abdu, W. Saeed","doi":"10.1155/2023/1399904","DOIUrl":"https://doi.org/10.1155/2023/1399904","url":null,"abstract":"In the current study, the researchers have explored the influence of doped Mg ions on the optical, morphological, and structural properties of zinc sulfide (ZnS) nanoparticles (NPs). The green technique was employed to prepare pure and 2% and 5% Mg-doped ZnS NPs using the Plectranthus barbatus leaf extract as a capping agent. XRD, SEM, FTIR, and UV-visible were used in the investigation process. The XRD results showed that all the synthesized materials have a cubic structure with space group F-43m. The Dav was nearly in the range of 2.02–2.20 nm. The SEM images illustrated that NPs were agglomerated. The UV-visible results showed that the optical bandgap increased as Mg2+ ions increased, which was in the range of 3.81–4.42 eV. The absorption shoulder of the prepared NPs is blue-shifted with increasing dopant concentration. The FTIR spectrum gives characteristic peaks for Zn-S bonds and asserts NPs’ formation. The antibacterial check against E. coli and S. aureus bacterial strains revealed that pure and Mg-doped ZnS NPs have higher activity for both bacterial strains. The results have shown that the prepared materials can be used for antibacterial activities and optoelectronic applications.","PeriodicalId":19018,"journal":{"name":"Nanomaterials and Nanotechnology","volume":" ","pages":""},"PeriodicalIF":3.7,"publicationDate":"2023-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43058323","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Characterization of Bismuth Composited to Carbon Nanotube-Coated Titanium Cathode in Electro-Fenton System 电fenton体系中铋复合碳纳米管-钛阴极的表征

IF 3.7 3区材料科学

Nanomaterials and Nanotechnology Pub Date : 2023-08-14 DOI: 10.1155/2023/9753824

Yita Wang, Y. Hsieh, Yue Lin

{"title":"Characterization of Bismuth Composited to Carbon Nanotube-Coated Titanium Cathode in Electro-Fenton System","authors":"Yita Wang, Y. Hsieh, Yue Lin","doi":"10.1155/2023/9753824","DOIUrl":"https://doi.org/10.1155/2023/9753824","url":null,"abstract":"Bismuth (Bi) is a highly reactive catalyst for the generation of hydroxyl (∙OH) radicals. Cathodes constructed from composites of Bi and carbon nanotube (CNT) exhibit high stability and low resistance, which enhance their electron transfer capability. In this work, a titanium substrate was coated with multi-walled carbon nanotube (MWCNT/Ti) using electrophoretic deposition process, followed by electrodeposition of Bi onto the MWCNT-coated Ti (Bi/MWCNT/Ti). The effects of Bi electrodeposition time on the surface morphology of Bi/MWCNT/Ti cathodes were investigated by scanning electron microscopy and energy-dispersive X-ray spectroscopy, and the electrochemical characteristics of each cathode were identified via a series of electrochemical analyses further. The results demonstrated that electrodeposition at −0.85 V vs. Ag/AgCl for 5 min revealed uniform distribution of dense Bi across the surface of cathode, which provides better hydrophilicity for cathode and promotes highest electron transfer rates, respectively; when the Bi/MWCNT/Ti cathode was used as an electro-Fenton (EF) cathode, the EF system achieved a rhodamine B degradation rate of 80.8% after 30 min, which is a significant increase (83.63%) than the unmodified Ti cathode. The use of Bi in EF cathodes improves the efficiency of the EF process.","PeriodicalId":19018,"journal":{"name":"Nanomaterials and Nanotechnology","volume":" ","pages":""},"PeriodicalIF":3.7,"publicationDate":"2023-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44215160","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Silver Nanoparticles Synthesized with Extracts of Leaves of Raphanus sativus L, Beta vulgaris L, and Ocimum basilicum and Its Application in Seed Disinfection Raphanus sativus L、Beta vulgaris L和basilicum叶片提取物合成纳米银及其在种子消毒中的应用

IF 3.7 3区材料科学

Nanomaterials and Nanotechnology Pub Date : 2023-08-11 DOI: 10.1155/2023/9874979

C. Garcidueñas-Piña, Carolina Tirado-Fuentes, Julio Ruiz-Pérez, R. C. Valerio-García, J. F. Morales-Domínguez

{"title":"Silver Nanoparticles Synthesized with Extracts of Leaves of Raphanus sativus L, Beta vulgaris L, and Ocimum basilicum and Its Application in Seed Disinfection","authors":"C. Garcidueñas-Piña, Carolina Tirado-Fuentes, Julio Ruiz-Pérez, R. C. Valerio-García, J. F. Morales-Domínguez","doi":"10.1155/2023/9874979","DOIUrl":"https://doi.org/10.1155/2023/9874979","url":null,"abstract":"Silver nanoparticles (AgNPs) were produced by green synthesis using Raphanus sativus (RsAgNPs), Beta vulgaris (BvAgNPs), and Ocimum basilicum (ObAgNPs) leaf extracts as reducing agents. Plant phytochemical composition analysis indicated that they contain phenolic compounds that can participate in the synthesis reaction as flavonoids. Synthesized AgNPs presented maximal absorption peak at 430 nm (RsAgNP), 440 nm (BvAgNP), and 420 nm (ObAgNP) in ultraviolet-visible spectrophotometry analysis. Scanning electron microscopy and energy dispersive X-ray spectroscopy analysis showed that RsAgNPs are 76 nm diameter spheres made of up to 54.1% silver, the BvAgNPs are 78 nm diameter spheres with 39.76% silver, and the ObAgNPs are cubes of 99 nm edges with 69.74% silver. The found Z potential values indicate that all the obtained AgNPs are stable in phosphate buffer. A disinfection of 100% and 90% was achieved for the in vitro culture of Arabidopsis thaliana and Psidium guajava (guava) seeds, respectively, with all AgNPs synthesized. Treatment with these AgNPs showed no negative effects on germination, and on the contrary, in guava, a higher germination percentage was observed when the seeds were exposed to RsAgNPs. Only at high concentration (10 mg/mL) of AgNPs, the growth of A. thaliana was decreased, while at low concentration (0.01 mg/mL) of ObAgNP and BvAgNPs, higher growth was showed, specifically 60 and 40% more than the control, respectively. All AgNPs showed antimicrobial activity against Escherichia coli and Klebsiella oxytoca which are bacteria of clinical interest, and against Agrobacterium tumefaciens, a bacterium used in the genetic transformation of plants.","PeriodicalId":19018,"journal":{"name":"Nanomaterials and Nanotechnology","volume":" ","pages":""},"PeriodicalIF":3.7,"publicationDate":"2023-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44497268","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Insight into the Influence of the Integrated Chitosan on the Adsorption Properties of Chitosan/Al-MCM-41 Composite for As (V) Metal Ions: Characterization and Advanced Equilibrium Studies 集成壳聚糖对壳聚糖/Al-MCM-41复合材料吸附As (V)金属离子性能的影响:表征及高级平衡研究

IF 3.7 3区材料科学

Nanomaterials and Nanotechnology Pub Date : 2023-08-09 DOI: 10.1155/2023/9879371

Mostafa R. Abukhadra, F. Dardir, E. Ahmed, M. F. Soliman, S. Othman, A. Allam, Wail Al Zoubi, Mohamed S Shaban

{"title":"Insight into the Influence of the Integrated Chitosan on the Adsorption Properties of Chitosan/Al-MCM-41 Composite for As (V) Metal Ions: Characterization and Advanced Equilibrium Studies","authors":"Mostafa R. Abukhadra, F. Dardir, E. Ahmed, M. F. Soliman, S. Othman, A. Allam, Wail Al Zoubi, Mohamed S Shaban","doi":"10.1155/2023/9879371","DOIUrl":"https://doi.org/10.1155/2023/9879371","url":null,"abstract":"Ecofriendly chitosan/Al-MCM-48 (CH/Al-MCM) was synthesized from natural microcline and assessed as a potential adsorbent of As (V) ions with enhanced capacity. The As (V) adsorption properties of CH/Al-MCM were assessed in comparison with Al-MCM-41 as a single phase. The studied CH/Al-MCM exhibits 178.6 mg/g as As (V) adsorption capacity which is higher than Al-MCM-41 (124 mg/g). The adsorption properties were illustrated based on the pseudo-first-order kinetic, Langmuir isotherm, and monolayer model with one energy site. Based on the recognized steric parameters, CH/Al-MCM displays significant enhancement in the active sites density (Nm = 88.8 mg/g (20°C)) as compared to Al-MCM (Nm = 61.5 mg/g). This signifies the role of the chitosan integration process in enhancing the adsorption capacity by increasing the availability of the present active sites. The number of adsorbed arsenic ions (2.01 to 2.66) suggests the uptake of 2 or 3 ions per free site by a multi-ionic and physical mechanism considering the adsorption energy (−16.3 to −16.9 kJ/mol). The thermodynamic functions of entropy, internal energy, and free enthalpy reflect the spontaneous and exothermic properties of the studied As (V) adsorption system by CH/Al-MCM. Moreover, the composite displays significant As (V) adsorption capacity in the existence of other dissolved ions.","PeriodicalId":19018,"journal":{"name":"Nanomaterials and Nanotechnology","volume":" ","pages":""},"PeriodicalIF":3.7,"publicationDate":"2023-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44278191","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0