Arak UniversityColloid & Nanoscience Journal2980-92152120240701Synthesis of carbon nanostructures using hydrothermal method and investigation of its application in drug release control21421971427110.61186/CNJ.2.1.214ENFarhadHeidaryDepartment of Chemistry, Faculty of Science, Arak University, Arak 38156‑8‑8349, IranFatemeh SadatFarzinpourDepartment of Chemistry, Faculty of Science, Arak University, Arak 38156‑8‑8349, IranJournal Article20240127The aim of this research is to achieve regular and controlled drug release. For this reason, improving and increasing the quality and ability of drug delivery systems has been of great interest. A very important issue in the drug delivery system is to achieve a stable and resistant formulation in such a way that it greatly increases the effectiveness of the drug in the target tissue by circulating and releasing the drug at a certain time. With this aim, biodegradable polymers are used due to their availability, biodegradability, easy manufacturing, and nanoparticles to control the rate of drug release into the body. In this research, the synthesis of carbon nanostructure was carried out using carrot juice extract by hydrothermal method, and the suitable temperature for synthesis was investigated. The results showed that heating for 24 hours at a temperature of 180 0C is suitable. Then, polymer nanocomposites consisting of chitosan, gelatin, carbon nanostructure and tetracycline drug were prepared. The results showed that nanostructures coated with polymer lead to better drug delivery performance. FTIR and XRD were used to characterize the prepared carbon nanostructure. The optimal samples containing 0.015 g of carbon nanostructure showed the best performance compared to other samples in drug release.https://cnj.araku.ac.ir/article_714271_a2fc3226bee00e2bec659f6a4cb73bee.pdfArak UniversityColloid & Nanoscience Journal2980-92152120240701Boosting the impact of cinnamaldehyde-contained polymer microemulsion on the corrosion of C1018 alloy in an acidic medium22022771525310.61186/CNJ.2.1.220ENMohammadNoor Mohammad BeigiR&D of water treatment,MHN Integrated Investment Company, Muscat, Sultanate of OmanJournal Article20240715The corrosion and related limitations are the detriment of steel equipment installed in the wells which limits the useful life of the equipment and reuse their use in future wells. In this work a new type of environmentally friendly acid corrosion inhibitor composition based on the cinnamaldehyde-contained poly(methyl methacrylate) nanocolloid with a unique combination of cinnamaldehyde as a filming additive, and an organo-sulfur compound for petroleum wells and water wells subjected to stimulation with acid solutions is presented. Cinnamaldehyde-contained poly(methyl methacrylate) nanocolloid was prepared in microemulsion system and characterized with dynamic light scattering (DLS) and zeta potential analysis. The new acid corrosion inhibitor with enhanced performance by a synergistic action between the cinnamaldehyde/ organo-sulfur compound and poly(methyl methacrylate) nanoparticles provide a fewer instances of pitting and also reduced rate of corrosion than previous inhibitors which include cinnamaldehyde alone. The anti-corrosion performance was performed on the C1018 alloy surface based on the Gravimetric analysis using corrosion rate measurement with the decrease in metal weight during the reference time period. The experimental results based on the AFM analysis shows that the cinnamaldehyde molecule's adsorption on an alloy surface in 15% HCl align. The anti-corrosion performance data confirmed that the developed inhibitor exhibited more than 95% (using 4 Wt.% of inhibitor) corrosion inhibition efficiency in 4% and 15% aqueous HCl at 303-343 K.https://cnj.araku.ac.ir/article_715253_1f8b880c5b998385637ad9816057a659.pdfArak UniversityColloid & Nanoscience Journal2980-92152120240701Promoting visible-light degradation of toluene over a simple constructed TiO2/Pd nanocomposite as photocatalytic coating air purification filter22823771539010.61186/CNJ.2.1.228ENSaberBadkoobeh HezavehDepartment of Mechanical Engineering, Sharif University of Technology, 1458889694, Tehran, Iran0009-0006-2975-7201Mohammad TahaRanjbarSchool of Chemical Engineering, Faculty of Engineering, University of Tehran, 1439955961, Tehran, IranBardiaNabaviDepartment of Mechanical Engineering, Sharif University of Technology, 1458889694, Tehran, IranJournal Article20240821A series of air filters based on the TiO<sub>2</sub>/Pd nanophotocatalyst were prepared using the colloid solution method in the presence of polyvinyl alcohol (PVA) as a surfactant. The morphology, surface area, and visible light adsorption properties, were investigated using FESEM, BET, and DRS analysis. As a result, the nitrogen adsorption-desorption isotherms of the catalysts showed that the N<sub>2</sub> adsorption ability of the resulted nanophotocatalysts (1.5 Wt.% of PVA) was better than the TiO<sub>2</sub> and other catalyst samples with more surface area. The photocatalytic activity of the nanophotcatalyst filter was investigated in the experiments of the photocatalytic degradation of toluene in a gaseous phase under visible light illumination. Among all the filters, the 10 Wt.% nanophotcaotalyst filter demonstrated the highest photocatalytic ability to decompose toluene. The photocatalytic efficiency of the nanophotocatalyst with the 1.5 Wt.% of PVA was remarkably enhanced by toluene removal. The LED lamp-60 W achieved the highest photocatalytic activity. The enhanced photodegradation of toluene is possibly due to the improved adsorption ability and the enhanced electron-hole pairs separation due to the presence of Pd nanoparticles on the surface of TiO<sub>2</sub> nanocatalyst and the electron transfer between the conduction band/defect level and Pd nanoparticles.https://cnj.araku.ac.ir/article_715390_6be6200346ee7bbfeb444f0258f88562.pdfArak UniversityColloid & Nanoscience Journal2980-92152120240701Sulfonic acid-decorated magnetic nanostructure: an efficient hybrid catalyst for green synthesis of 1-Amidoalkyl-2-naphtholes23825371548110.61186/CNJ.2.1.238ENMohammad AliBodaghifardDepartment of Chemistry, Faculty of science, Arak University, Arak 3848177584, IranInstitute of Nanosciences and Nanotechnology, Arak University, Arak, Iran.0000-0001-9732-4746HaniehAllahbakhshiDepartment of Chemistry, Faculty of science, Arak University, Arak 3848177584, IranJournal Article20240708The remarkable stability of magnetic core and -OH functional groups on the surface of silica-coated magnetite (Fe3O4@SiO2) nanoparticles make them an excellent candidate for functionalization and catalytic applications. In this study, a surface-modified solid support was fabricated by immobilizing sulfonic acid groups on magnetic nanoparticles (Fe3O4@SiO2@AE-SO3H). The structure of prepared hybrid nanostructure was characterized by various analyses, including Fourier-transform infrared spectroscopy (FT-IR), X-ray powder diffraction (XRD), thermogravimetric analysis (TGA/DTG), vibrating sample magnetometr (VSM), the field emission scanning electron microscopy (FE-SEM), and the electron-dispersive X-ray spectroscopy (EDS). The catalytic activity of prepared hybrid nanomaterial was assessed in the synthesis of 1-amidoalkyl-2-naphthols, resulting in high yields of the desired products under environmentally friendly conditions. High yields, short reaction times, green solvent and conditions, easy workup procedure, reusability without a significant diminish in catalytic efficiency and simple separation of nanocatalyst by using an external magnet alongside the environmental compatibility and sustainability are some advantages of this method.https://cnj.araku.ac.ir/article_715481_8dcd98afa2128fd902e7827ecee2c87d.pdfArak UniversityColloid & Nanoscience Journal2980-92152120240701A single step and cost-effective flash nanoprecipitation method to prepare chitosan with high curcumin conjugated gold nanoparticles loading and its antibacterial investigation25426071554810.61186/CNJ.2.1.254ENShokufeKarimiDepartment of Polymer and Color Engineering, Amirkabir University of Technology, 15875-4413, Tehran, IranMahsaRoshani FarahaniDepartment of Analytical Chemistry, Faculty of Chemistry, Bu-Ali Sina University, 6517838683, Hamedan, IranJournal Article20240901A synergistic effect of gold nanoparticles and curcumin and a unique combination of chitosan natural amphiphilic polymer due to their widespread biological and technological applications have gained much attention. Their simpler synthesis for encapsulating curcumin-conjugated gold nanoparticles in particulate carriers assembled by polymer as trapping agent via green chemistry has also become of foremost importance. The current study offers to report a new, simple, single-step, and cost-effective room temperature strategy for the fabrication of curcumin-conjugated spherical gold nanoparticles dispersed on the surface of chitosan by pH adjusting that curcumin acts as the reducing and stabilizing agent based on the flash nanoprecipitation. The prepared samples were characterized with UV-Vis, AFM, and TEM analysis. Regarding the obtained data from the antibacterial test by disc diffusion method, the prepared chitosan with high curcumin conjugated gold nanoparticles compared to the pure chitosan and curcumin encapsulated chitosan nanoparticles with high antibacterial activity will open a unique opportunity for industrial scale-up. The inhibition zone diameter was 25 mm which is more than the inhibition zone diameter for chitosan (7 mm) and chitosan with curcumin loading (12 mm).https://cnj.araku.ac.ir/article_715548_6c2a33df7f03720c086fc5b23526d8ee.pdfArak UniversityColloid & Nanoscience Journal2980-92152120240701Investigation of the power between cinnamon essential oil macro and nanoemulsions as green corrosion inhibitors26126971565910.61186/CNJ.2.1.261ENBehnia SadatMirhoseiniR&D of Water Treatment, Golden Road Integrated Investment L.L.C., 111, Muscat governorate, Sultanate of Oman0009-0009-7562-5738RahelehNiaziDepartment of Chemistry, Alborz Campus, University of Tehran, 7186776783, Tehran, IranJournal Article20240831Trying to reduce the corrosion problems as a critical menace for all industries, emphasizing the urgent need to increase responsible R&D centers, the development of high inhibition efficiency green inhibitors with new treatment strategies, and innovative interventions on a global scale is a necessary challenge. Here, a new type of cinnamon essential oil macro and nanoemulsions as green, sustainable, and low-cost corrosion inhibitors were introduced. The prepared macro and nanoemulsions were characterized with the DLS technique. The macro and nanoemulsion were used for investigating C1018 steel corrosion within acidizing media due to the implementation of corrosion inhibitors continuing to be a significant concern in chemical sectors. To our knowledge, there is no comparative study on the effect of nano and macro‐emulsions of cinnamon essential oil on the corrosion resistance properties. The results obtained show that the nanoemulsion of the cinnamon essential oil due to the lower particle size of the oil nanoemulsion droplet and more effective interaction with the metal surface could act as an effective inhibitor compared to the macroemulsion sample for the corrosion protection of C1018 steel in HCl media. As can be seen from Scanning Electron Microscopy (SEM) images that were used to confirm the vital role and activity of the CNE in reducing the corrosion rate, It is clear that the CNE inhibitor can inhibit the dissolution of iron, thereby reducing the rate of corrosion and which means an affording better protection against corrosion in 0.1 M HCl.https://cnj.araku.ac.ir/article_715659_23bd557a71139ee4d7a4a9871e7cac15.pdf