Nano-Structures & Nano-Objects最新文献

{"title":"Green synthesis of α-MnO2/Ag nanocomposite using Malva parviflora (Khabbaz) extract for antimicrobial activity","authors":"Saja Q. Ali ,&nbsp;Duha A. Kadhim ,&nbsp;Asmaa Hadi Mohammed ,&nbsp;Raghad S. Mohammed ,&nbsp;Muslim A. Abid ,&nbsp;Sara A. Athari","doi":"10.1016/j.nanoso.2025.101467","DOIUrl":"10.1016/j.nanoso.2025.101467","url":null,"abstract":"<div><div>The green synthesis method was used to make alpha manganese dioxide (α-MnO₂), silver nanoparticles (Ag NPs), and alpha-manganese dioxide/silver nanocomposite (α-MnO₂/Ag NCs) from the <em>Malva parviflora plant leaves</em> extract. The XRD patterns, FE-SEM analysis, AFM device, EDX spectrum, and UV–visible spectrum were used to characterize the α-MnO₂ NPs, Ag NPs, and α-MnO₂/Ag NCs. Crystal structure and crystal size values were determined through XRD patterns. The XRD results show that α-MnO₂ NPs, Ag NPs, and α-MnO₂/Ag NCs have a tetragonal and cubic shape, with crystallite sizes ranging from 13 to 25 nm, 14–38 nm, and 13–40 nm, respectively. This study also used FE-SEM to show that the α-MnO₂ NPs, Ag NPs, and α-MnO₂/Ag NCs particles are very small, measuring 38.44, 30.04, and 58.07 nm, in that order. The AFM scans showed that the α-MnO₂ NPs, Ag NPs, and α-MnO₂/Ag NCs were half-spherical and spherical, and their sizes ranged from 72.8 to 159.3 nm. The EDX spectrum and image showed α-MnO₂ NPs, Ag NPs, and α-MnO₂/Ag NCs that were pure and had Mn and Ag in them. The UV-Vis spectrum shows the energy band gaps of 5, 5.3, and 6.2 eV for α-MnO₂ NPs, Ag NPs, and α-MnO₂/Ag NCs, respectively. The diffusion method was used to look at the areas where α-MnO₂ NPs, Ag NPs, and α-MnO₂/Ag NCs stopped bacteria from growing. This study found that the inhibition zones for gram-positive bacteria (Staphylococcus aureus and staphylococcus epidemidis) were 16.00–19.00 % mm, 14.00–17.00 mm, and 15.00–17.67 mm in size. For gram-negative bacteria (Escherichia coli and Klebsiella pneumonia), they were 13.00–16.00 mm, 13.00–14.00 mm, and 14.00–20.67 mm in size. For fungi, the inhibition zone diameters (IZDs) were 4.67 ± 0.58 mm, 15.00 ± 0.00 mm, and 14.00 ± 0.58 mm, respectively. Using a green synthesis method to mix the <em>Malva parviflora</em> plant leaves extract with MnNO₃ and AgNO₃ salt is a pretty new idea that hasn't been seen in any study papers yet, as far as the author knows.</div></div>","PeriodicalId":397,"journal":{"name":"Nano-Structures & Nano-Objects","volume":"42 ","pages":"Article 101467"},"PeriodicalIF":5.45,"publicationDate":"2025-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143619761","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Performance optimization of hybrid nano-engineered geopolymer binders-based ultra-high-performance concrete","authors":"Jayant M. Raut ,&nbsp;Prashant B. Pande ,&nbsp;Kamlesh V. Madurwar ,&nbsp;Boskey V. Bahoria ,&nbsp;Rajesh M. Bhagat ,&nbsp;Niteen T. Kakade ,&nbsp;Pravin Y. Karmore ,&nbsp;Latika Pinjarkar ,&nbsp;Manjushree Muley","doi":"10.1016/j.nanoso.2025.101469","DOIUrl":"10.1016/j.nanoso.2025.101469","url":null,"abstract":"<div><div>Ultra-high-performance and sustainable construction materials have given the thrust to the development of geopolymer technology. This work presents a nano-engineered geopolymer binder incorporating hybrid nano-reinforcements of nano-silica and graphene oxide at optimized ultrasonication and mechanical milling for improved dispersion and prevention of agglomeration. The resulting specimen exhibits a compressive strength exceeding 120 MPa at 24 h and a water absorption below 3 %. A microwave-assisted novel curing method accelerates geopolymerization, achieving this strength in less than 1 h and a reduction of the curing duration by 70 %. Further employing doped CNTs for structural health sensing has even greater potential, creating a self-sensing system with a gauge factor of over 25. Synchrotron XRD analysis supplies information about phase evolution, thus ensuring a crystallinity index greater than 50 %. Molecular dynamics simulations predict robust interactions with bond energies beyond 320 KJ/mol, whereas kinetic modeling optimizes reaction rates of up to 80 % polymerization within 8 h. Ballistic Impact testing shows over 50 percent enhancement in impact resistance, proving to be very robust under a severe loading condition. The overall picture created by inter alia superior mechanical properties, durability, self-sensing ability, and environmental benefits (20 % energy saving) should be considered as a paradigm shift for constructions with high performance and sustainability, stretching its applications to aerospace and defenses.</div></div>","PeriodicalId":397,"journal":{"name":"Nano-Structures & Nano-Objects","volume":"42 ","pages":"Article 101469"},"PeriodicalIF":5.45,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143610584","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Radiative porosity sodium alginate hybrid nanofluid flow over an exponential stretching/shrinking surface: Dual solutions","authors":"Adnan Asghar ,&nbsp;Teh Yuan Ying ,&nbsp;Liaquat Ali Lund ,&nbsp;Zahir Shah ,&nbsp;Narcisa Vrinceanu ,&nbsp;Saeed Islam","doi":"10.1016/j.nanoso.2025.101463","DOIUrl":"10.1016/j.nanoso.2025.101463","url":null,"abstract":"<div><div>An investigation into the effects that porous medium, magnetic fields, thermal radiation, and viscous dissipation have on SA-hybrid nanofluid was the focus of a numerical study that was carried out for a dual branches solution that featured an exponentially stretching and shrinking layer. The principal goal of this study is to explore the behavior of coefficient skin friction and heat transfer with the permeability parameter for the suction aspect, as well as the behavior of solid volume fraction against the stretching/shrinking effect. The impact of the permeability parameter, magnetic, shrinkage parameter, and viscous dissipation on the temperature profile and velocity of sodium alginate-hybrid nanofluid flow are also incorporated in the present investigation. The governing equations in the form of partial differential equations (PDEs) are transformed into the form of ordinary differential equations (ODEs), implementing a similarity variable having exponential similarity. The ODE system is numerically solved using the Three-stage Labatto III-A technique included in the bvp4c solver with the MATLAB program. Two branches’ solutions are obtained when the pertinent parameters are varied over defined ranges. Non unique solutions are obtained when the critical point reaches suction greater or equal to suction critical points and shrinking paramter greater or equal to shrinking paramter critical points for suction and shrinkage effects respectively. In addition, the upper branch has a significant increase in reduced skin friction and heat transfer when the permeability parameter is raised, whereas the lower branch experiences a decrease. The heat transfer rate diminutions in the upper branch solution and increases in the lower branch solution as the solid volume percentage of copper increases. Temperature profiles decrease as permeability parameter values improve. As Eckert's value increases, the temperature profile also improves.</div></div>","PeriodicalId":397,"journal":{"name":"Nano-Structures & Nano-Objects","volume":"42 ","pages":"Article 101463"},"PeriodicalIF":5.45,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143593201","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Fabrication and characterization of electrospun nanofibers infused with hematite nanoparticles for the remediation of heavy metals from aqueous medium","authors":"Mohamed Khalith S. B ,&nbsp;Sathish Kumar Karuppannan ,&nbsp;Raghavendra Ramalingam ,&nbsp;Darul Raiyan G. I ,&nbsp;S. Vijayalakshmi ,&nbsp;Kantha Deivi Arunachalam","doi":"10.1016/j.nanoso.2025.101452","DOIUrl":"10.1016/j.nanoso.2025.101452","url":null,"abstract":"<div><div>Heavy metals pose a significant threat to human health and the environment due to their toxicity and persistence. We have fabricated electrospun nanofibers with poly(ε-caprolactone) (PCL) and chitosan (CS), incorporating hematite nanoparticles (HNPs) and used to remove Cr⁶⁺ and Cs⁺ from simulated solutions. The nanofibers were characterized by various techniques and adsorption studies investigated the impact of pH, adsorbent dosage, initial contaminant concentration, and contact time on the removal efficiency of Cr⁶⁺ and Cs⁺. SEM and EDS analyses confirmed the adsorption of both contaminants onto the nanofibers. The maximum adsorption for Cr⁶⁺ was achieved under acidic conditions, while Cs⁺ adsorption was favoured in alkaline environments. Isotherm studies demonstrated that the adsorption process followed both Langmuir and Freundlich models. Additionally, pseudo-kinetic studies indicated that the adsorption mechanism adhered to a second-order kinetic model. The ability of these nanofibers to effectively remove heavy metals from water solutions highlights their potential for environmental remediation applications.</div></div>","PeriodicalId":397,"journal":{"name":"Nano-Structures & Nano-Objects","volume":"42 ","pages":"Article 101452"},"PeriodicalIF":5.45,"publicationDate":"2025-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143578045","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Nickel ferrite: Advances in the synthesis methods, properties and its applications","authors":"Jayashree Patra,&nbsp;V.K. Verma","doi":"10.1016/j.nanoso.2025.101458","DOIUrl":"10.1016/j.nanoso.2025.101458","url":null,"abstract":"<div><div>Nickel ferrites (NiFe₂O₄) have gained attention for their excellent magnetic properties, including high magnetic permeability, low magnetic losses, and moderate coercivity, making them ideal for applications in electronics, telecommunications, magnetic sensors, and energy storage systems. Nickel ferrites have been prepared using a variety of synthesis processes, including sol-gel, co-precipitation, hydrothermal, microwave-assisted, and solvothermal. Each approach has a considerable impact on particle size, crystallinity, and magnetic characteristics. Bulk NiFe₂O₄ has a saturation magnetization (M_s) of ∼50–55 emu/g, coercivity (H_c) of 100–200 Oe, and Curie temperature (T_c) of ∼585°C, making it ideal for soft magnetic applications. Elemental doping (e.g., Zn, Mg, Co, and rare earth metals) alters the cation distribution, magnetic interactions, and structural features, allowing for customized performance. Zn²⁺ doping increases M_s by up to ∼60 emu/g, while rare-earth doping decreases M_s, making photocatalytic and energy storage applications more efficient. Nickel ferrites are widely used in catalysis (e.g., dye degradation, heavy metal removal, and photocatalysis), energy storage devices (e.g., supercapacitors with capacitance ∼650 F/g, lithium-ion batteries with specific capacities ∼850 mAh/g), and biomedical fields (e.g., magnetic hyperthermia and MRI contrast agents).</div></div>","PeriodicalId":397,"journal":{"name":"Nano-Structures & Nano-Objects","volume":"42 ","pages":"Article 101458"},"PeriodicalIF":5.45,"publicationDate":"2025-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143548959","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of buffer gas pressure on phases and size of oxide nanoparticles produced by exploding wires","authors":"K.V. Suliz ,&nbsp;S.O. Kazantsev ,&nbsp;A.V. Pervikov ,&nbsp;S.Yu Tarasov ,&nbsp;M.I. Lerner","doi":"10.1016/j.nanoso.2024.101419","DOIUrl":"10.1016/j.nanoso.2024.101419","url":null,"abstract":"<div><div>The effects of Ar + 20 % mol. O₂ buffer gas and partial oxygen pressures on phase composition and mean sizes of nanosized particles of tungsten, molybdenum, iron and copper oxides obtained using exploding wires (EW) have been investigated. The buffer gas (BG) pressure increase from 0.1 to 0.3 MPa allowed increasing the mean particle size of all oxide powders while it was kept almost constant in further increasing the pressure from 0.3 to 0.4 MPa. The increase in the buffer gas pressure provided better cooling conditions for the synthesized nanosized particles, which also contained more of high-temperature Fe₂O₃, WO₃, and MoO₃ oxides. Increasing the partial pressure of oxygen from 0.02 to 0.08 MPa did not resulted in complete oxidizing of the nanoparticles because of simultaneous increasing the mean particles size and their cooling rate. The experiments showed that the minimal BG pressure required for obtaining copper and iron oxides was 0.2 MPa, whereas for tungsten and molybdenum oxides it was 0.4 MPa. The established in these work dependencies could be of fundamental meaning for developing novel process of multi-wire EW synthesis of nanoparticles and coatings from multicomponent (high-entropy) oxides</div></div>","PeriodicalId":397,"journal":{"name":"Nano-Structures & Nano-Objects","volume":"41 ","pages":"Article 101419"},"PeriodicalIF":5.45,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143156425","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Nanoparticle troopers: Infiltrating cancer cells for targeted therapies","authors":"Shivam Rajput ,&nbsp;Rishabha Malviya ,&nbsp;Bhupendra G. Prajapati ,&nbsp;Sathvik Belagodu Sridhar ,&nbsp;Javedh Shareef","doi":"10.1016/j.nanoso.2025.101453","DOIUrl":"10.1016/j.nanoso.2025.101453","url":null,"abstract":"<div><div>Nanoparticles are revolutionizing cancer treatment by overcoming the limitations of conventional drug delivery systems, which often result in significant side effects and reduced therapeutic efficacy due to non-specific targeting and poor solubility. Traditional chemotherapeutic agents can damage healthy tissues, particularly those with rapidly dividing cells, necessitating lower drug dosages and leading to disappointing survival rates. To address these challenges, nanoparticles utilize the enhanced permeability and retention (EPR) effect, allowing for improved drug accumulation in tumor tissues. Engineered nanoparticles can be designed for specific targeting by incorporating ligands that selectively bind to receptors on target cells and tumor vasculature. Additionally, stimuli-responsive nanoplatforms represent an innovative approach; these platforms remain inactive in normal conditions but become activated in the tumor environment, releasing their therapeutic payload in a controlled manner. This targeted strategy not only enhances treatment efficacy but also minimizes exposure to healthy cells. Researchers are focusing on modifying nanoparticle surfaces with biological ligands, known as active targeting, which improves absorption and facilitates stronger attachment to specific receptors on cancer cells. By concentrating on the unique features of malignancies, nanomedicine offers a more efficient method for addressing solid tumors and reduces the risk of developing resistant clonal populations of cancer cells. Overall, nanotechnology provides the potential for selective targeting of malignant cells, enhancing drug delivery and uptake while minimizing harm to healthy tissues. This paper explores the principles of nanoparticle targeting, interactions with cancer cells, and drug release mechanisms, highlighting the transformative potential of nanotechnology in advancing cancer therapies.</div></div>","PeriodicalId":397,"journal":{"name":"Nano-Structures & Nano-Objects","volume":"41 ","pages":"Article 101453"},"PeriodicalIF":5.45,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143430208","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Utilizing the lanolin of kangal-akkaraman sheep breed wool from Sivas-Zara area for silver nanoparticles synthesis and their multifaceted applications","authors":"Haboon Ahmed Hassan,&nbsp;Betül Gürünlü","doi":"10.1016/j.nanoso.2025.101440","DOIUrl":"10.1016/j.nanoso.2025.101440","url":null,"abstract":"<div><div>The purpose of this study is to investigate a sustainable and eco-friendly method of producing silver nanoparticles in the Sivas-Zara area by utilizing lanolin, a naturally occurring material that is taken from sheep wool. This study was driven by the antioxidant, antibacterial, and photocatalytic qualities of lanolin, which may have uses in cosmetics and environmental remedies. The findings demonstrate that Ultraviolet Visible Spectroscopy and Fourier Transform Infrared Spectroscopy spectroscopy were used to successfully produce and analyze silver nanoparticles. The antibacterial activity was evaluated against <em>Staphylococcus aureus</em> and <em>Escherichia coli</em>, and the antioxidant qualities were confirmed using the Folin-Ciocalteu assay. Furthermore, the methylene blue dye was efficiently degraded by photocatalysis, reducing absorbance by 79.92% in just 24 minutes. To sum up, our study shows that lanolin is a good reducing agent for making AgNPs, which have potent antioxidant, antibacterial and photocatalytic properties.</div></div>","PeriodicalId":397,"journal":{"name":"Nano-Structures & Nano-Objects","volume":"41 ","pages":"Article 101440"},"PeriodicalIF":5.45,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143338491","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Synthesis of Ag-decorated SrTiO3-based nanocomposites via solvothermal method using Uncaria gambir Roxb. leaf extract as a bioreductor with enhanced electrical conductivity","authors":"Yulia Eka Putri ,&nbsp;Puji Vajrian Pertiwi ,&nbsp;Jumadil Khairani ,&nbsp;Halimah Tusadiah-Z. ,&nbsp;Diana Vanda Wellia ,&nbsp;Dedi Satria ,&nbsp;Tio Putra Wendari","doi":"10.1016/j.nanoso.2025.101447","DOIUrl":"10.1016/j.nanoso.2025.101447","url":null,"abstract":"<div><div>The green synthesis of silver-SrTiO₃ (Ag-STO) nanocomposites mediated by gambir (<em>Uncaria gambir</em> Roxb.) leaf extract successfully produced Ag nanoparticles decorated on the surface of SrTiO₃. The extract functions as a bioreductor, facilitating the formation of silver nanoparticles by reducing Ag(I) ions to Ag metal during solvothermal synthesis. Structural analysis confirmed the presence of Ag metal and morphological observations showed that the SrTiO₃ particles are below 50 nm in size and, with their surfaces decorated by Ag particles of about 7 nm in size. Fourier transform infrared spectroscopy spectrum emphasized the vibrational characteristics of the interactions between functional groups on cetyl trimethyl ammonium bromide (CTAB), serving as a capping agent, and tert-butylamine (TBA) as a mineralizer with the SrTiO₃ surface. The optical response measurement confirmed that both Ag and SrTiO₃ display their distinct absorption characteristics, indicating that the band gap energy of the resulting Ag-STO nanocomposite remains unchanged. The electrical conductivity value of Ag-STO nanocomposite reached up to 29 times higher than that of the SrTiO₃ at high temperatures.</div></div>","PeriodicalId":397,"journal":{"name":"Nano-Structures & Nano-Objects","volume":"41 ","pages":"Article 101447"},"PeriodicalIF":5.45,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143453407","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"In-situ synthesis of soft, non-aggregated and well-dispersed Ag0, Au0 and Ag0-coated-Au0 nanoparticles using cold-macerated bark extract of Combretum glutinosum: Stability, DNA-binding, and antibacterial potential","authors":"Adamu Mamman ,&nbsp;Preeti Jain","doi":"10.1016/j.nanoso.2025.101432","DOIUrl":"10.1016/j.nanoso.2025.101432","url":null,"abstract":"<div><div>Natural resource-derived nanoparticles have continued to gain popularity due to their potential application in the biomedical and other domains. This study presents an in-situ synthesis method that uses cold-macerated aqueous extract generated from <em>Combretum glutinosum</em>’s stem bark tissue to synthesize soft, non-aggregated, and well-dispersed Ag.⁰, Au.⁰, and Ag.⁰-coated-Au.⁰ nanoparticles. Their TEM and FESEM images demonstrated that they are soft, non-aggregated, well-dispersed, and spherically shaped particles with mean diameters of 13.10 nm and 20.00 nm for CgAgNPs and CgAg⁰-Au⁰NPs, respectively, whereas, particles of CgAuNPs exhibited the same characteristics but had variable shapes including spherical, cylindrical, triangular, pentagonal, and hexagonal with a mean diameter of 29.48 nm. Their mean hydrodynamic sizes (from DLS), core sizes (from TEM), and crystallite sizes (from PXRD) appeared in the range of 4.0–45.5 nm, which follows a trend of crystallite sizes ˂ core sized ˂ hydrodynamic sizes. Besides the crystallite sizes, PXRD analysis exposed their purity and crystallinity with average crystallite diameters (nm) of 4.49 for CgAgNPs, 9.23 for CgAuNPs, and 7.9 for CgAg⁰-Au⁰NPs. These nanoparticles are highly stable as revealed by their zeta potential values which were further supported by their hardness (դ) values obtained from the Tauc plot for the bandgap energies that followed a trend of դ= 2.495 (–29.5 mV) ˃ դ= 2.315 (–27.4 mV) ˃ դ= 1.495 (–13.2 mV) for CgAg⁰-Au⁰NPs, CgAgNPs, and CgAuNPs, respectively. The robust stability preserved their physicochemical behaviour over time and equipped them with promising biological effects. The binding potential of these nanoparticles to C.t.DNA revealed effective interaction with binding constant (K_b) values of 2.467 × 10³ (CgAgNPs), 2.438 × 10³ (CgAuNPs), and 2.199 × 10³ (CgAg⁰-Au⁰NP), suggesting their usage as antimicrobial agents. Following this, they were investigated for antibacterial activities and the outcomes unveiled strong activity with potent <em>IC</em>_<em>50</em> of 0.05 mg/ml(50 µg./ml) over <em>Staphylococcus aureus</em> and 0.1 mg/ml(100 µg/ml) over <em>Pseudomonas aeruginosa</em> for CgAgNPs; 0.1 mg/ml(100 µg/ml) over both organisms for CgAuNPs; and 0.05 mg/ml(50 µg/ml) over both organisms for CgAg⁰-Au⁰NPs. Their stability, softness, non-aggregation, and well-dispersed nature equipped them with incredible biological effects which are credited to the synergistic potential contributed by each component.</div></div>","PeriodicalId":397,"journal":{"name":"Nano-Structures & Nano-Objects","volume":"41 ","pages":"Article 101432"},"PeriodicalIF":5.45,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143156683","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}