Iranian Nanotechnology SocietyInternational Journal of Nanoscience and Nanotechnology1735-700420420241215Effect of TiO2-MWCNTs Nanocomposite on the Performance of Mixed Matrix Nanofiltration Membranes: Manganese Ion Removal23124872978110.22034/ijnn.2025.2024498.2490ENSedighehDaroumiUniversity of Tehran, Tehran, Iran0000-0002-7056-5264RaminYavariNuclear Fuel Cycle School, Nuclear science and technology Research institute, (NSTRI), P.O.Box. 11365-8486, Tehran, IranMohammad AliAroonSchool of Chemical Engineering, College of Engineering, University of Tehran,Tehran, Iran0000-0002-2775-8271TakeshiMatsuuraIndustrial Membrane Research Laboratory, Chemical Engineering Department, University of Ottawa, Ottawa, CanadaJournal Article20240308This study aims to investigate the removal of manganese ions from aqueous residues of the chemical industries using neat and mixed matrix polyethersulfone (PES) membranes. Functionalized multi-walled carbon nanotubes (MWCNTs), titanium dioxide nanoparticles (TiO2), and multi-walled carbon nanotubes/titanium dioxide nanoparticles (TiO2-functionalized MWCNTs hybrid) were used as the fillers in the mixed matrix membranes to improve the membrane performance. MWCNTs were oxidized and functionalized using nitric acid. TiO2 and TiO2-functionalized MWCNTs nanoparticles were synthesized by the sol-gel method and Sun et al.’s method, respectively. These nanoparticles were characterized by transmission electron microscopy (TEM) and nitrogen adsorption/desorption isotherms (BET). Both neat and mixed matrix PES membranes were fabricated by the phase inversion method and characterized by SEM and contact angle measurement. They were further subjected to the filtration test for manganese removal. SEM images showed that all the tested membranes have an asymmetric structure with a top-dense control layer supported by a sublayer with finger-like pores. Results of the contact angle test demonstrated adding each of these particles (functionalized MWCNTs, TiO2, and TiO2-functionalized MWCNTs) reduced the contact angle and, thus, increased the hydrophilicity of the membrane. The results of the filtration tests are as follows; Adding 0.1% functionalized MWCNTs could increase the membrane flux to 28.65 L/m2s (with 89.3% manganese ions rejection), adding 0.1% TiO2 increased the manganese ion rejection percentage to 92.06% (with a flux of 8.97 L/m2s) and adding 0.1% TiO2-functionalized MWCNTs hybrid increased the flux to 26 L/m2s (with 87.04% manganese ions rejection).https://www.ijnnonline.net/article_729781_6a56cdfdd8c7199dd1006ab086fa2778.pdfIranian Nanotechnology SocietyInternational Journal of Nanoscience and Nanotechnology1735-700420420241201An investigation of nanofluid MQL on surface roughness and total cutting force in hard turning process using CBN inserts24926072910610.22034/ijnn.2025.2043557.2584ENPham QuangDongDepartment of Manufacturing Engineering, Faculty of Mechanical Engineering, Thai Nguyen University of Technology, Thai Nguyen 250000, Vietnam0000-0003-2454-1672Tran BaoNgocDepartment of Fluids Mechanic, Faculty of Automotive and Power Machinery Engineering, Thai Nguyen University of Technology, Thai Nguyen 250000, VietnamNgo MinhTuanDepartment of Manufacturing Engineering, Faculty of Mechanical Engineering, Thai Nguyen University of Technology, Thai Nguyen 250000, Vietnam0000-0002-5117-7741Tran MinhDucDepartment of Manufacturing Engineering, Faculty of Mechanical Engineering, Thai Nguyen University of Technology, Thai Nguyen 250000, Vietnam0000-0002-9188-7553Tran TheLongDepartment of Manufacturing Engineering, Faculty of Mechanical Engineering, Thai Nguyen University of Technology, Thai Nguyen 250000, Vietnam0000-0002-5333-8705Journal Article20241016The growing demand for environmentally friendly solutions for improving hard machining performance is considered as the urgent issue in modern manufacturing. Nanofluid minimum quantity lubrication (NF MQL) has emerged as a promising technique to enhance cooling and lubrication effectiveness in cutting zone, thereby improving hard cutting performance. This paper aims to study the effects of Al2O3 nanofluid MQL hard turning using CBN inserts on surface roughness and total cutting force. Box–Behnken experimental design for response surface methodology was used to investigate the influences of nanoparticle concentration, air flow rate, and air pressure on the responses. The obtained results revealed that the performance of hard turning process was improved by using Al2O3 nanofluid MQL environment. The technological guides were provided for the specific cutting conditions. Specifically, nanoparticle concentration of 0.5%, air pressure of 4.9 bar, and flow rate of 150 l/min is determined as the optimal set for lowest total cutting force (Fr =153.36N). Besides, nanoparticle concentration NC = 0.54%, air pressure p = 5.1 bar, and air flow rate Q = 250 l/min should be used for the minimum surface roughness (Ra = 0.288µm). Furthermore, based on the multi-optimization results, an optimal parameter set (NC = 0.53%, p = 4.79 bar, and Q = 193.4 l/min) should be suggested to achieve the minimal values of Ra=0.2987 µm and Fr =169.16 N.https://www.ijnnonline.net/article_729106_65cd1bee317a63bc0da4a2889c4f75dc.pdfIranian Nanotechnology SocietyInternational Journal of Nanoscience and Nanotechnology1735-700420420241201Green synthesis and characterization of bioinspired metal nanoparticles mediated by Ipomoea involucrata P. Beauv. as potential antimicrobial agents26127472978210.22034/ijnn.2025.2010480.2422ENIkechukwu P.EjidikeDepartment of Chemical Sciences, Faculty of Science, Anchor University, Lagos, Nigeria0000-0002-3643-0198Doris O.SeyindeDepartment of Chemical Sciences, Faculty of Science, Anchor University, Lagos, NigeriaChidera F.NwaemeDepartment of Chemical Sciences, Faculty of Science, Anchor University, Lagos, NigeriaMercy O.BamigboyeDepartment of Industrial Chemistry, Faculty of Physical Sciences, University of Ilorin, Ilorin, NigeriaOlajumokeOluadeDepartment of Chemistry, Faculty of Science, Gombe State University, Gombe, NigeriaRacheal U.IjimdiyaDepartment of Chemical Sciences, Faculty of Science, Anchor University, Lagos, NigeriaTemitope O.FakoyaDepartment of Industrial Chemistry, Faculty of Science, University of Ilesa, Ilesa, NigeriaDorcas A.FadareDepartment of Chemical Sciences, Faculty of Science, Anchor University, Lagos, NigeriaOluwatoyin O.OjoDepartment of Chemical Sciences, Faculty of Science, Anchor University, Lagos, NigeriaSolomon A.OlaleruDepartment of Physical Science, School of Science, Yaba College of Technology, Lagos, NigeriaJuliana B.AdetunjiDepartment of Biochemistry, Faculty of Basic and Applied Sciences, Osun State University, Oshogbo, NigeriaHadley S.ClaytonDepartment of Chemistry, College of Science, Engineering, and Technology, University of South Africa, Florida Park, South AfricaJournal Article20230831Chemical, physical, or biological routes have been beneficial to the synthesis of nanoparticles of varied shapes and sizes. Nevertheless, the synthesis of nanoparticles via the use of plants as precursors is a rapid, environmentally friendly, low-cost option and is safe for the human populace. Synthesis of metal nanoparticles with plant extracts is advantageous owing to their ease of scalability and capability as a capping, bio-reducing mediator, and/ or stabilizer. This study presents a simple and eco-friendly approach for the synthesis of AgNPs, MnNPs, NiNPs, and CuNPs from the leaf extract of Ipomoea involucrata. The synthesized nanoparticles were characterized by UV-UV-visible spectroscopy, Scanning Electron Microscopy (SEM), Energy Dispersive Spectroscopy (EDX), and Fourier Transform Spectroscopy (FTIR). UV-vis spectra of the aqueous medium containing the metal nanoparticles showed a peak at 425 nm for AgNPs, CuNPs at 433 nm, and NiNPs around 416 nm, while MnNPs showed a peak at about 417 nm. The morphology of the metal nanoparticles (IP-MNPs) as documented by the SEM results reveals irregular shapes as peculiar to each nanoparticle. The EDX analysis confirms the presence of each elemental metal in the synthesized nanoparticles. Furthermore, the nanoparticles showed better activities against microbial pathogens than the plant extract; it is therefore suggested that these green-synthesized metal nanoparticles tagged with Ipomoea involucrata can address future health and medical concernshttps://www.ijnnonline.net/article_729782_af1743cfb81991a383ee859050ce6a66.pdfIranian Nanotechnology SocietyInternational Journal of Nanoscience and Nanotechnology1735-700420420241215Influences of Al2O3 Nanofluid MQL Technological Parameters on Thrust Cutting Force in Hard Turning Using CBN Inserts27528472908510.22034/ijnn.2025.2040600.2564ENVu LaiHoangDepartment of Materials Engineering, Faculty of Mechanical Engineering, Thai Nguyen University of Technology, Thai Nguyen 250000, VietnamTran BaoNgocDepartment of Fluids Mechanic, Faculty of Automotive and Power Machinery Engineering, Thai Nguyen University of Technology, Thai Nguyen 250000, VietnamTran MinhDucDepartment of Manufacturing Engineering, Faculty of Mechanical Engineering, Thai Nguyen University of Technology, Thai Nguyen 250000, Vietnam0000-0002-9188-7553Ngo MinhTuanDepartment of Manufacturing Engineering, Faculty of Mechanical Engineering, Thai Nguyen University of Technology, Thai Nguyen 250000, Vietnam0000-0002-5117-7741Tran TheLongDepartment of Manufacturing Engineering, Faculty of Mechanical Engineering, Thai Nguyen University of Technology, Thai Nguyen 250000, Vietnam0000-0002-5333-8705Journal Article20240908High cutting forces generated from contact faces in hard turning process are still the huge challenge, which limits the productivity, lowers machined surface quality, and shortens tool life. Among them, the thrust cutting force strongly affects the hard cutting efficiency. This study aims to analyze the thrust force in turning process of hardened 90CrSi steel under Al2O3 Nanofluid Minimum Quantity Lubrication (NF MQL) technology using uncoated cubic boron nitride (CBN) inserts. Regression analysis was made to establish the dependence of the thrust force on NF MQL parameters. The results indicate that air pressure has the most significant influence on the thrust forces. The interactions between nanoparticle concentration and air flow rate (NC*Q) and between air pressure and air flow rate (p*Q) also showed the significant effects. The minimal value of thrust cutting force (Fy) could be achieved at Al2O3 nanoparticle concentration of 0.8%, air pressure of 4 bar, and air flow rate of 250 l/min. Moreover, the analysis results could be used to determine the reasonable set of NF MQL parameters for smaller Fy values in hard turning process.https://www.ijnnonline.net/article_729085_5ff1e6fafafe850aeec2afd714c417e2.pdfIranian Nanotechnology SocietyInternational Journal of Nanoscience and Nanotechnology1735-700420420241215Electrocatalyst For Solid Oxide Fuel Cells Operating At Intermediate Temperatures28529472909010.22034/ijnn.2025.2041148.2568ENSanaKabdrakhmanovaSatpaev University, Kazakhstan, AlmatyMazhynSkakovInstitute of Atomic Energy, Branch RSE NNC RK,EsbolShaimardanScientific Center of Composite MaterialsKydyrmollaAkatanS. Amanzholov East Kazakhstan UniversityAlmiraZhilkashinovaS. Amanzholov East Kazakhstan UniversityMadiarBeisebekovScientific Center of Composite MaterialsNurgamitKantayS. Amanzholov East Kazakhstan UniversityArmanMiniyazovInstitute of Atomic Energy, Branch RSE NNC RKViktorBaklanovInstitute of Atomic Energy, Branch RSE NNC RKYerbolatKoyanbayevInstitute of Atomic Energy, Branch RSE NNC RKNuriyaMukhamedovaInstitute of Atomic Energy, Branch RSE NNC RKGainiyaZhanbolatovaInstitute of Atomic Energy, Branch RSE NNC RKJournal Article20240914The present study aims to advance the existing body of research on electrode materials used in electrochemical applications, specifically sustainable energy devices, such as solid oxide fuel cells (SOFs). Synthesis and characterization of the Ce~0.8~Cu~0.1~Co~0.1~MnO~3~ electrocatalyst was performed, followed by analysis of the electrochemical properties of this complex oxide system. The electrocatalyst offers high activity in oxygen reactions at intermediate temperatures, and is considered to be a promising candidate for SOFs that operate in such a range, as it shows significant improvement in catalytic activity. The structural and morphological features of Ce0.8Cu0.1Co0.1MnO3 have been examined using X-ray diffraction, scanning electron microscopy with energy dispersive X-ray spectroscopy, transmission electron microscopy and TEM analysis showed that particle size ranged from 40 nm to 80 nm. Brunauer-Emmett-Teller analysis showed that the calculated surface area of Ce-CCM was 196.1 m2/g, EIS demonstrated that at a temperature of 600 degrees, the current density was 1.1 W/cm2. This is 1.2 times higher than that of existing cathode materials. Further, the oxidation states and surface composition of the Cu and Co incorporated into the CeMnO3 matrix was confirmed through XPS analysis. The results point to the potential of this material being used as an electrocatalyst for efficient oxygen reactions in various energy harvesting devices.https://www.ijnnonline.net/article_729090_4f0a23c564ce410ac1a9a1f1d0f99e33.pdfIranian Nanotechnology SocietyInternational Journal of Nanoscience and Nanotechnology1735-700420420241201Investigation of structural, dielectric, and magnetic properties of ZnFe2O4 prepared by single-step chemical route method29530472908310.22034/ijnn.2025.2025216.2493ENRameshRPG and Research Department of Physics, Sacred Heart College(Autonomous),Tirupattur, Tamilnadu-635601
(Affiliated to Thiruvalluvar University-Tamilnadu India)0000-0001-8361-5761LakshmiDPG and Research Department of Physics, Sacred Heart college(Autonomous), Tirupattur, Tirupattur(Dt)-635601KAVIYARASUK2UNESCO-UNISA Africa Chair in Nanosciences/Nanotechnology Laboratories, College of Graduate Studies, University of South Africa (UNISA), Muckleneuk Ridge, PO Box 392, Pretoria, South Africa.Journal Article20240319In this study, we have successfully synthesized ZnFe2O4 nanoparticles by the one-step chemical route method. The structure of the sample was identified as a tetragonal phase by the X-ray diffraction (XRD) studies. Scanning electron microscopy (SEM) analysis showed the uniform spherical distribution of the particles with the range of 20 nm to 60 nm. The formation of chemical bonding of Zn and Fe2O4 was confirmed from the absorption bands that occurred at 531 cm-1 and 497 cm-1 by fourier transform infrared (FTIR) spectroscopy. The optical bandgap of the synthesized ZnFe2O4 nanoparticles was estimated from the Tauc plot as 5.37 eV based on the absorption spectrum resulting from UV-vis studies. Electrochemical performance including dielectric loss, dielectric constant, and permittivity, of the prepared Zinc ferrite nanoparticles was studied and the behaviour of the sample at various temperatures was plotted and interpreted.https://www.ijnnonline.net/article_729083_329c594075fe166a06987b8f476747c6.pdf