Arak UniversityColloid & Nanoscience Journal2980-92152320241201Nanostructure, surface and magnetic properties of Co-Cr alloy thin films32833571886710.61186/CNJ.2.3.328ENMaryamNasehnejadKosar School, Department of Education and Training, District 1, Arak, Iran0000-0002-2669-9003NayerehLotfiKosar School, Department of Education and Training, District 1, Arak, IranJournal Article20241031Co-Cr films were produced with electrodeposition with different pH at room temperature. The effect of electrolyte pH on the structural, surface morphology and magnetic properties of the films was studied. X-ray diffraction measurement showed that the films have hexagonal close packed structure. For the films deposited at different pH values, the surface morphologies with different-sized globular granules were observed whereas the morphology covered by uniformly distributed nanoscale grains was detected for the surfaces of all films produced from electrolytes with different Cr concentrations. Magnetic properties such as coercivity and saturation magnetization showed strong dependence on the electrolyte solution pH and consequently the crystallite size. The Co-Cr films with low Hc were achieved using relatively low electrolyte pH. The differences observed in the magnetic properties were attributed to the structural changes caused by the electrolyte pH. The Co-Cr films may have the potential applications in magnetic recording and sensors technologies.https://cnj.araku.ac.ir/article_718867_2a3b6a14a02c07d50489a8ee2097aaac.pdfArak UniversityColloid & Nanoscience Journal2980-92152320241201Fabrication and characterization of PES based nanofiltration membrane using bio-inspired iron (III)-dopamine nanoparticles33635672010210.61186/CNJ.2.3.336ENFahimeParvizianDepartment of Chemical Engineering, Arak university, Arak 38156-8-8349, IranMojganEbrahimiDepartment of Chemical Engineering, Arak university, Arak 38156-8-8349, IranSamanehBandehaliDepartment of Mechanical Engineering, Ayatollah Boroujerdi University, Boroujerd 69199-69737, IranArashAlimadadiDepartment of Chemical Engineering, Arak university, Arak 38156-8-8349, IranJournal Article20241117This paper presents a study on the modification of nanofiltration membranes with bio-inspired iron (III)-dopamine nanoparticles in a polymer solution. The membranes were produced using the immersion precipitation technique with the incorporation of dopamine, polyvinyl pyrrolidone, and dimethylacetamide. The study evaluated the properties of the nanocomposite membranes, including water content, surface morphology, and their performance was characterized through SEM, contact angle goniometry, pure water flux, and rejection of NaCl and humic acid. The findings revealed that membranes containing 0.1 wt.% bio-inspired iron (III)-dopamine nanoparticles exhibited the best overall performance, with enhanced hydrophilicity, anti-fouling properties, and salt rejection efficiency. This optimal concentration also minimized fouling and improved the flux recovery ratio compared to other concentrations, highlighting its potential for water treatment applicationshttps://cnj.araku.ac.ir/article_720102_f24d451b1a893d2b679152e43db2b29d.pdfArak UniversityColloid & Nanoscience Journal2980-92152320241201Evaluation of the anti-biofilm potential of biosynthesized silver nanoparticles against Escherichia coli and Klebsiella pneumoniae isolated from urinary tract infection patients in Zahedan, 202335736872056410.61186/CNJ.2.3.357ENAliQasemiDepartment of Biology, Faculty of Basic Sciences, University of Sistan and Baluchestan, Zahedan, Iran0009-0007-1728-5304OmidAzizian-ShermehDepartment of Chemistry, Faculty of Basic Sciences, University of Sistan and Baluchestan, Zahedan, Iran0000-0002-3169-1532FatehRahimiDepartment of Cell and Molecular Biology and Microbiology, Faculty of Biological Science and Technology, University of Isfahan, Isfahan, Iran0000-0002-2098-2502Journal Article20250111Urinary tract infections (UTIs) are among the most prevalent infections worldwide and a significant contributor to morbidity and mortality, with bacterial biofilm formation playing a critical role in their persistence and resistance to treatment. This study evaluated the biofilm-forming ability of Escherichia coli (E. coli) and Klebsiella pneumoniae (K. pneumoniae) isolates obtained from UTI patients and investigated the anti-biofilm activity of biosynthesized silver nanoparticles (AgNPs) against biofilm-producing strains. Bacterial identification and confirmation were performed using selective culture media and polymerase chain reaction (PCR) assays. Biofilm production and the anti-biofilm efficacy of AgNPs were assessed through a quantitative microtiter plate assay, while antimicrobial susceptibility testing was conducted using standard antibiotic disc diffusion methods. The results revealed a high prevalence of biofilm-positive strains, with E. coli exhibiting a higher proportion of strong biofilm producers compared to K. pneumoniae. Antibiotic resistance analysis demonstrated significant resistance in both uropathogens, particularly to beta-lactam antibiotics. The synthesized AgNPs exhibited potent anti-biofilm activity, effectively inhibiting biofilm formation in both bacterial species. Interestingly, despite the higher biofilm-forming capacity of E. coli, AgNPs displayed greater inhibitory effects on E. coli biofilms compared to those of K. pneumoniae. These findings underscore the clinical relevance of biofilm formation in UTI pathogenesis and highlight biosynthesized AgNPs as a promising therapeutic agent for managing biofilm-associated infections. This study emphasizes the need for innovative approaches to combat biofilm-related antimicrobial resistance and improve UTI treatment outcomes.https://cnj.araku.ac.ir/article_720564_3a7e5a3fff7f380843f4b2d0622638ce.pdfArak UniversityColloid & Nanoscience Journal2980-92152320241201A new combination of amino and mercapto type coupling agent to fabricate polymer-coated cobalt ferrite nanocomposite as corrosion inhibitor with high performance film-forming36938172103010.61186/CNJ.2.3.369ENBehnia SadatMirhoseiniR&D of Water Treatment, Golden Road Integrated Investment L.L.C., 111, Muscat governorate, Sultanate of Oman0009-0009-7562-5738ElhamAllamAlafak Institute of Information and Technology, University of Beirut, Beirut, LebanonJournal Article20250201Nanotechnology has transformed industrial corrosion limitations, offering opportunities to enhance treatment outcomes while minimizing adverse effects. This study focuses on the combination of amino and mercapto-type coupling agents<strong> </strong>to fabricate sulfonium group-containing polymer-coated cobalt ferrite nanoparticles for potential application as anti-corrosion. In this research work, two types of polymer-ferrite nanocomposite composed of a monomer comprising a sulfonium group wherein inorganic nanoparticle cores are coated by a layer comprising a copolymer of the aforesaid monomer at one end of the molecule. Two systems including a lecithin surfactant-based microemulsion system and a free lecithin emulsion system were used to synthesis nanocomposites and were labeled as PF-A and PF-B respectively. The prepared samples were characterized with X-ray Diffraction (XRD), and Dynamic Light Scattering (DLS) analysis. The prepared PF-A nanocomposite provide a forming a film having excellent anticorrosion properties on a metal surface without producing sludge, and without using phosphorus or chromium compared to PF-B in a 1.0 M HCl solution, with 100% maximum corrosion inhibition efficiency at 1.5 Wt.% of nanocomposite based on the normalized weight loss (mg/cm<sup>2</sup>) measurements. The operational parameters such as temperature, and concentration of inhibitor were studied. The film forming on the surface of steel with both nanocomposite samples was confirmed with Atomic Force Microscopy (AFM) and the obtained results reveal globular nanospheres compacted and aligned near each other forming an anticorrosive shield monolayer against the corrosive environment. AFM images validate the film-forming on the surface of the steel plate and experimental findings of the anti-corrosion inhibition for both samples compared to the control sample due to a unique combination of amine and mercapto type of coupling agents with synergistic effect.https://cnj.araku.ac.ir/article_721030_c1c03ab128a3057d941e4ab53c697a96.pdfArak UniversityColloid & Nanoscience Journal2980-92152320241201The effect of gold nanoparticles on the inhibition of BCR-ABL protein as a leukemia factor using molecular docking method38238972108610.61186/CNJ.2.3.382ENMohammadMohammad Ali MansouriDepartment of Biology, Faculty of Sciences, Shahid Chamran University of Ahvaz, Ahvaz, Iran0000-0002-3618-6762MotahharehHemmati NasabDepartment of Biology, Faculty of Sciences, Shahid Chamran University of Ahvaz, Ahvaz, IranMasoumehKarim PourDepartment of Biology, Faculty of Sciences, Shahid Chamran University of Ahvaz, Ahvaz, IranMehdiRezvani MehrDepartment of Biology, Faculty of Sciences, Shahid Chamran University of Ahvaz, Ahvaz, IranJournal Article20250118Blood cancer, also known as leukemia, is a type of cancer that affects blood cells and bone marrow, leading to abnormal production of blood cells. It is one of the most common types of cancer in children and adults, and its prevalence has increased in recent years, so that in some regions, leukemia has emerged as a public health challenge and has increased the need for attention and targeted treatments. The BCR-ABL protein, which is known as an oncogene, plays a key role in the pathogenesis of chronic myeloid leukemia. This paper investigates the molecular docking of gold nanoparticles on the BCR-ABL protein as an effective agent in the treatment of leukemia. In this study, schrodinger PyMOL 2.5.5 software was used to perform molecular docking. The gold nanoparticles and BCR-ABL protein molecules were designed and extracted using the RCSB and PubChem databases. The results show that gold nanoparticles are able to successfully dock with the BCR-ABL protein. This interaction is achieved by hydrogen bonds, electrostatic interactions, and van der Waals forces. The findings suggest that gold nanoparticles can act as an effective inhibitory agent in the treatment of leukemia by targeting the BCR-ABL protein, and further research is needed to evaluate the clinical effects of these nanoparticles in targeted therapies.https://cnj.araku.ac.ir/article_721086_ceb64c73f9ab068a792099d93ffdb275.pdfArak UniversityColloid & Nanoscience Journal2980-92152320241201Synthesis of ternary nickel-cobalt-palladium nanoparticle by microemulsion method and investigation of its antibacterial activity on Escherichia coli39039672133610.61186/CNJ.2.3.390ENBinaNamakchiDepartment of Chemistry, Sanandaj Branch, Islamic Azad University, Sanandaj, IranHassanSaydiDepartment of Chemistry, Sanandaj Branch, Islamic Azad University, Sanandaj, IranJournal Article20250120In this research, nickel-cobalt-palladium nanoparticles were synthesized using the microemulsion method. The formation of nanoparticles, morphology, size and size distribution of nanoparticles was investigated using SEM, UV-Vis, and DLS methods. The UV-visible spectrophotometric results showed a peak in the region of 380-480 nm, confirming the presence of nanoparticles. The SEM results indicated spherical particle sizes in the range of 45-50 nm for the ratio of Ni:Co:Pd (1:1:1). Additionally, the DLS results showed a size range of produced nanoparticles between 50 and 100 nm, which is consistent with the SEM and UV-Visible results. Nickel-cobalt-palladium nanoparticles exhibited antibacterial properties against E. coli bacteria. The diameter of the zone of inhibition formed in samples containing nanoparticles was significantly larger than the diameter of the positive control sample and the negative control sample (without a zone of inhibition), thus confirming their antibacterial properties.https://cnj.araku.ac.ir/article_721336_04088fd163b9aea81dfdee4d7b8eb5a5.pdf