Ag Composites Research Articles

Three-dimensional NTF–Ag composites for ultrasensitive SERS-based detection of malachite green on crucian carp skin

Three-dimensional (3D) Na2Ti3O7 flower (NTF) systems were synthesized, followed by sputter coating with silver (Ag) nanoparticles to increase surface-enhanced Raman scattering (SERS) activity. By varying the sputtering time, SERS activity of the Ag-decorated NTF (NTF-Ag) structures was optimized. Furthermore, the theoretical evidence from finite difference time domain (FDTD) simulations confirmed that an appropriate density of Ag particles increased the electromagnetic field contribution. The electromagnetic field contribution is high because the special petal-shaped structure can promote multiple reflections and scattering, thus providing efficient resonance absorption for charge-transfer (CT) and exciton enhancements. Highly SERS-active NTF-Ag composites were developed and exploited for the detection of malachite green (MG), a model contaminant in the food industry. The detection limit of this method for MG reached 3.78 × 10−10 M, with a standard deviation of homogeneity of 6.83 %. This method was successfully applied to detect MG on crucian carp skin, and it showed high recovery, indicating that it can serve as a practical method for MG evaluation. All results demonstrated that the prepared NTF-Ag composite has great potential in the application of SERS-based contamination assessment in the food industry.

A study on hot deformation behaviors and microstructures of 10 vol% SiCP/Al-Cu-Mg-Ag composite prepared by spray co-deposition and extrusion

Isothermal compression test is used to investigate the hot deformation behavior of spray co-deposited and extruded 10 vol% SiCP/Al-Cu-Mg-Ag composite. In this study, an accurate strain-compensated model based on Arrhenius constitutive equation is constructed with the corresponding R value of 0.9965 and AARE of 4.05%. The experimental results are in high agreement with the predicted flow stress. Hot deformation activation energy of the SiCP/Al composite (161.685 kJ/mol) is notably higher than that of Al-Cu-Mg-Ag alloy, which is attributed to the dislocations introduced by SiC reinforcement. The microstructure evolution of compressed specimens is characterized using EBSD and TEM. DRX, including CDRX and DDRX, is the main softening mechanism under the hot deformation conditions of high temperature, low strain rate and high strain. The softening mechanism transition from DRV to DRX is due to the subgrains consuming dislocations and then transforming into DRX grains. Comparing the microstructure under different hot deformation parameters, the recrystallization degree is significantly influenced by temperature, followed by strain rate and strain. In addition, the recrystallization process is impeded by the primary Al2Cu phases, T phases and SiC particles in the composite through hindering the migration of dislocations.

Improved thermal shock reliability of Ag paste sintered joint by adjusted coefficient of thermal expansion with Ag-Si atomized particles addition

In this study, two kinds of atomized Ag-20 wt%Si and Ag-50 wt%Si particles are fabricated and added to Ag paste to fabricate composite pastes to achieve a low coefficient of thermal expansion (CTE), and their performance stability in SiC power module is evaluated under thermal shock from −50 to 250 °C. Four kinds of composite Ag pastes using the two kinds of atomized Ag-Si addition with 10 % and 30 % were obtained, AS20-10, AS50-10, AS20-30 and AS50-30, respectively. The results show that the CTE reduction intensifies with increasing Ag-Si atomized particle content. The retention ratio of shear strength of AS20-30 sintered joint after 1000 cycles was 102.3 %, which means the shear strength did not decrease during so harsh thermal shock test. The mechanism was discussed in detail. In addition, the properties such as thermal conductivity and electrical conductivity for the composite pastes were also evaluated to gain a more comprehensive understanding for the new materials especially for the design of SiC power modules with a long-time life. Comprehensively considering the material parameters of the composite pastes and the reliability of the sintered joints under thermal shock, the optimized composite pastes as die attach material in power electronics are obtained. The findings should be inspiring in developing novel die attach materials for high reliable interconnections in SiC power modules.

Enhanced engineering and biocidal polypropylene filaments enabling melt reduction of AgNO3 through PVP agent: A scalable process for the defense industry with MEX additive manufacturing

This study focused on the production of polypropylene (PP)/silver (Ag) composites via additive manufacturing. This study aimed to enhance the quality of medical-grade PP in material extrusion (MEX) three-dimensional printing (3DP) by improving its mechanical properties while simultaneously adding antibacterial properties. The latter can find extremely important and versatile properties that are applicable in defense and security domains. PP/Ag nanocomposites were prepared using a novel method based on a reaction occurring while mixing appropriate quantities of the starting polymers and additives, namely polyvinylpyrrolidone (PVP) as the matrix material and silver nitrate (AgNO3) as the filler. This process produced three-dimensional (3D) printed filaments, which were then used to create specimens for a series of standardized tests. It was found that the mechanical properties of the nanocomposites were enhanced in relation to pristine PP, especially for the PP matrix with various loadings of AgNO3 and PVP, such as 5.0 wt% and 2.5 wt%, respectively. The voids, inclusions, and actual-to-nominal dimensions also showed improved results. The 3DP specimens exhibited a more effective biocidal performance against Staphylococcus aureus than Escherichia coli, which developed an inhibition zone only in the case of PP with filler loading percentages of AgNO3 and PVP at 10.0 wt% and 5.0 wt%, respectively Compounds possessing such properties can be beneficial for various applications requiring increased mechanical properties and biocidal capabilities, such as in the Defence or medical industries.

Electrochemical corrosion study of CH-xTiO2 (x=Ag, Mg, Sr, and Zn) coated Ti–6Al–4V alloy for dental implant

Ti–6Al–4V is a widely used material for dental and orthopedic implants due to its biocompatibility and excellent mechanical properties. However, it is susceptible to corrosion when exposed to the human body and oral environment. To alleviate this issue and for enhancing and improving its application in dentistry, we applied a protective coating to the alloy surface. Thin films of CH-xTiO2 (x = Ag, Mg, Sr, and Zn) composites were deposited on titanium alloy substrates using the sol-gel dip coating technique. It is an environmentally friendly technique known for enhancing metal corrosion resistance. The surface roughness and morphology of coated and uncoated substrates were analyzed using profilometry, SEM, and AFM. The results revealed that the coating effectively protects the alloy surface. Corrosion protection in artificial saliva was evaluated through potentiodynamic polarization (Tafel), electrochemical impedance spectroscopy (EIS), and cyclic voltammetry (CV) studies. The results indicate that the CH-xTiO2 coating significantly improves the corrosion resistance of titanium alloy surfaces in artificial saliva, enhancing the durability and performance of dental implants in challenging oral environments and thus increasing patient satisfaction.

Synthesis and Antimicrobial Properties of Silver Phthalocyanine (AgPc)/Ag Supported on Aminosilane‐Modified Silicate

AbstractOrganic–inorganic composite antibacterial materials based on AgPc/Ag and aminosilane‐modified silicate (Ormosil) were prepared by sol‐gel processes and an in situ reduction method. The physical and chemical properties of AgPc, Pc‐Ormosil and AgPc‐Ormosil/Ag composites were analyzed by SEM, XRD, NMR and XPS spectroscopy. As a result, Ag nanoparticles were bonded and chelated in Pc‐Ormosil matrix. The morphology analysis of SEM showed that the AgNPs in the Pc‐Ormosil matrix were spherical and uniformly distributed, with a size of about 5–10 nm. These NMR and XPS results indicated that the AgNPs were coordinated with Pc (N−Ag−N) and chelated with Ormosil (−CH2NH…Ag) to form a AgPc‐Ormosil/Ag composite. The antibacterial effects of AgPc‐Ormosil/Ag composites on Gram‐negative Pseudomonas aeruginosa and Escherichia coli, and Gram‐positive Staphylococcus aureus and Bacillus subtilis were evaluated by inhibiting ring, minimum inhibitory concentration (MIC), minimum bactericidal concentration (MBC) and plate counting. The MIC/MBC values of Pc‐Ormosil, AgPc‐Ormosil/Ag‐2.5, AgPc‐Ormosil/Ag‐5 and AgPc‐Ormosil/Ag‐10 against bacteria were 11.0/>11.0, 1.10/1.10, 0.11/0.11 and 0.011/0.011, respectively, indicating excellent antibacterial properties.

Monodisperse silver nanocubes composite Ag@C/SrTiO3 photocatalytic decomposition of water for hydrogen reduction

Metal-induced photocatalysis has been a relatively effective strategy for the efficient use of solar energy. In this paper, highly efficient and stable Ag@C/SrTiO3 photocatalysts were prepared by compounding silver nanocubes wrapped with few layers graphite with strontium titanate materials. We obtained silver nanocubes with a uniformly dispersed size of about 35 nm by varying the surface energy of silver and inducing the preferential binding of PVP on the (100) crystal plane with the help of selective adsorption of chloride ions on the different crystal planes of silver. As obtained under the characterisation of UV–visible absorption spectra, the material has a broad visible light absorption (450–900 nm). The Ag@C/SrTiO3 has a hydrogen reduction rate of up to 457.5 μmol g−1·h−1 under simulated sunlight, which is ∼200 % higher than the SrTiO3 and ∼900 % higher than the sliver. Moreover, the catalyst was stable, still producing 93.5 % hydrogen after three cycles of testing, and the photocatalyst structure did not change as known from the XRD data of the material before and after testing. The present work demonstrates the feasibility of rational design of efficient and stable silver-based photocatalysts.

Tribological, mechanical, and thermal properties of nano tricalcium phosphate and silver particulates reinforced Bis-GMA/TEGDMA dental resin composites

The proposed study is based on fabricating a hybrid dental composite of nano tricalcium phosphate and silver nanoparticles with resin matrix. Silver nanoparticles (20 wt%) and tricalcium phosphate (0–4 wt%) were incorporated in Bis-GMA/TEGDMA resin matrix. Photo initiator and accelerator were also employed for the polymerization of dental composites. Wear or tribology analysis of dental composites was performed on pin on disc setup. Physical, thermal, and mechanical properties were investigated under ASTM parameters. Void, water solubility, and sorption increased with an increment of filler loading. Maximum polymerization shrinkage 3.85 ± 0.02 % and depth of cure 2.57 ± 0.12 mm indicated by control sample TAg0. Taguchi L25 orthogonal array was used as a design of experiment (DOE) for wear analysis. TGA revealed the thermal stability in the form of: TAg0 > TAg1 > TAg2 > TAg3 > TAg4 in the range of 22–100 ̊C. In conclusion, the direct restorative material composed by the hybrid showed good mechanical and physical properties and potential thermal results, widening the scope of Ag and tricalcium phosphate in the dental composites.

Synthesis, Characterization, and Photocatalytic Activity of Magnetically Separable Fe3O4@SiO2@ZnO-Ag Composite Photocatalyst.

Magnetically separable Fe3O4, Fe3O4@SiO2, Fe3O4@SiO2@ZnO, and Fe3O4@SiO2@ZnO-Ag composites are synthesized using hydrothermal and wet chemistry methods. The samples obtained are characterized in terms of morphology, composition, optical, and magnetic properties using TEM, SEM-EDS, XRD, FTIR, VSM, XPS, and UV-vis, and the photodegradation of Acid Blue 161 dye under UV irradiation is investigated. As a result of SEM and TEM analyses, the diameters of Fe3O4, Fe3O4@SiO2, Fe3O4@SiO2@ZnO, and Fe3O4@SiO2@ZnO-Ag composites are determined as 210, 220, 230 and 235nm, respectively. The magnetic properties of the samples are determined by VSM analysis. In VSM analyses, magnetization saturation values of Fe3O4, Fe3O4@SiO2, Fe3O4@SiO2@ZnO, and Fe3O4@SiO2@ZnO-Ag composites are determined as 81, 64, 41 and 20 emus × g-1, respectively. In XRD analysis, the face-centered cubic structure of Fe3O4 particles and the hexagonal wurtzite structure of ZnO are determined and it is determined that they are compatible with standard diffraction cards. According to UV-Vis analysis, E g values for Fe3O4, Fe3O4@SiO2, Fe3O4@SiO2@ZnO, and Fe3O4@SiO2@ZnO-Ag composites are found as 1.3, 1.68, 2.21, and 2.15eV, respectively. Among the photocatalysts prepared, Fe3O4@SiO2@ZnO-Ag composite Acid Blue 161 shows superior removal and recyclability against photodegradation of the dyestuff.

Silver-doped cadmium aluminate and its MXene based composite for visible-light driven photocatalytic degradation of organic pollutants

Visible-light-driven photocatalysis has attracted enormous prominence as a sustainable approach to address escalating environmental pollution. Consequently, it is paramount to develop photocatalysts featuring absorption in visible light with enhanced charge separation to perform well under solar light irradiation. Herein, we have fabricated pure (CdAl2O4) and silver-doped cadmium aluminate (Ag–CdAl2O4) by following the facile coprecipitation route while the MXene-based composite of doped material (Ag–CdAl2O4/MXene) by ultrasonication. The photocatalytic activity of the as-prepared photocatalysts was estimated by degrading crystal violet and phenol as sample pollutants. The composite material displayed substantially enhanced photocatalytic performance and degraded ∼95 % (0.0204 min−1) and ∼84.6 % (0.0130 min−1) of crystal violet and phenol, respectively. This enhanced catalytic performance corresponds to the synergism of silver doping and composite fabrication, enhancing the visible-light-response and efficient decoupling of the photo-generated charge carriers. Additionally, active species generated during the photocatalytic process and their role in the breakdown of the targeted pollutants were determined by the scavenging investigation. The kinetics study revealed the first-order kinetics model for the degradation reaction of the targeted pollutants. The present findings unveil the significant catalytic potential of the as-fabricated composite (Ag–CdAl2O4/MXene) for the degradation of organic pollutants.

H2-D2 Exchange Activity and Electronic Structure of Ag x Pd1-x Alloy Catalysts Spanning Composition Space.

Many computational studies of catalytic surface reaction kinetics have demonstrated the existence of linear scaling relationships between physical descriptors of catalysts and reaction barriers on their surfaces. In this work, the relationship between catalyst activity, electronic structure, and alloy composition was investigated experimentally using a Ag x Pd1-x Composition Spread Alloy Film (CSAF) and a multichannel reactor array that allows measurement of steady-state reaction kinetics at 100 alloy compositions simultaneously. Steady-state H2-D2 exchange kinetics were measured at atmospheric pressure on Ag x Pd1-x catalysts over a temperature range of 333-593 K and a range of inlet H2 and D2 partial pressures. X-ray photoelectron spectroscopy (XPS) was used to characterize the CSAF by determining the local surface compositions and the valence band electronic structure at each composition. The valence band photoemission spectra showed that the average energy of the valence band, ε̅v, shifts linearly with composition from -6.2 eV for pure Ag to -3.4 eV for pure Pd. At all reaction conditions, the H2-D2 exchange activity was found to be highest on pure Pd and gradually decreased as the alloy was diluted with Ag until no activity was observed for compositions with x Pd < 0.58. Measured H2-D2 exchange rates across the CSAF were fit using the Dual Subsurface Hydrogen (2H') mechanism to extract estimates for the activation energy barriers to dissociative adsorption, ΔE ads ‡, associative desorption, ΔE des ‡, and the surface-to-subsurface diffusion energy, ΔE ss, as a function of alloy composition, x Pd. The 2H' mechanism predicts ΔE ads ‡ = 0-10 kJ/mol, ΔE des ‡ = 30-65 kJ/mol, and ΔE ss = 20-30 kJ/mol for all alloy compositions with x Pd ≥ 0.64, including for the pure Pd catalyst (i.e., x Pd = 1). For these Pd-rich catalysts, ΔE des ‡ and ΔE ss appeared to increase by ∼5 kJ/mol with decreasing x Pd. However, due to the coupling of kinetic parameters in the 2H' mechanism, we are unable to exclude the possibility that the kinetic parameters predicted when x Pd ≥ 0.64 are identical to those predicted for pure Pd. This suggests that H2-D2 exchange occurs only on bulk-like Pd domains, presumably due to the strong interactions between H2 and Pd. In this case, the decrease in catalytic activity with decreasing x Pd can be explained by a reduction in the availability of surface Pd at high Ag compositions.

Sensor label with polyaniline-metal composites for meat freshness monitoring

ABSTRACT In this study, ion-track membranes with pore diameters of 2 ± 0.1 μm and a fluence of 107 cm−2, with a thin layer of gold sputtered on one side, were used for the electrochemical synthesis of thin films from a polyaniline (PANI) composite with gold (Au) or silver (Ag) nanoparticles. PET (polyethylene terephthalate ion-track membranes) films with the thin film of TM+PANI/Au and TM+PANI/Ag composites, featuring a developed microstructured surface, were designed. Using ATR-FTIR (Attenuated Total Reflection – Fourier-transform infrared spectroscopy) and Raman spectroscopy, it was determined that PANI was synthesised predominantly in the form of an emeraldine salt, with a minor presence of the emeraldine base form. The TM+PANI/Au and TM+PANI/Ag films exhibited high sensitivity to ammonia, with detection thresholds of approximately 40 mg/L and 20 mg/L, respectively.

Silver-decorated and graphene-wrapped MgO ternary composite (Ag–GN@MgO) for the potential inhibition of foodborne bacterial pathogens

Silver-decorated and graphene-wrapped MgO ternary composite (Ag–GN@MgO) for the potential inhibition of foodborne bacterial pathogens

Regulation to Ag–Al spikes through silver aluminum paste with Al–Si alloy

It is known that metallization of Ag–Al pastes to boron doped emitter of N-type solar cells will reduce contact resistance, because Al will promote forming Ag–Al spikes, providing conductive channels. However, deeper Ag–Al spikes will exacerbate metal recombination and deteriorate cell performance, thus requiring regulation. It has been reported that adding Si to Ag–Al pastes could effectively limit the formation of Ag–Al spikes, but it will increase grid line resistance and reduce conductivity. Based on this, we prepared new Ag–Al pastes using Al–Si alloys, which effectively regulated Ag–Al spikes and ensured electrical properties. In addition, we comprehensively compared the contact properties of conventional Ag–Al pastes, Ag–Al pastes with added Si, and Al–Si alloy pastes. The results indicated that conventional Ag–Al pastes have lower contact potential barriers and better contact performance, but Ag–Al spikes are difficult to control. Adding Si to Ag–Al pastes effectively limited the formation of spikes, but it will significantly increase potential barriers and deteriorate electrical performance. By contrast, using Al–Si alloys can not only achieve comprehensive regulation of the size and composition of Ag–Al spikes, but also ensure good electrical performance. This study developed Al–Si alloy pastes with great potential for application, which were of great significance for regulation of Ag–Al spikes and the development of advanced Ag–Al pastes.

The influence of lowing the Schottky barrier on the reactive oxygen species formation in Ag@SrBi2Ta2O9 piezocatalyst under ball milling

Loading noble metal nanoparticles on piezoelectric substrates to form the Schottky barrier is believed to be an effective way to promote charge separation and enhance the piezocatalytic performance. The presence of the exceeded Schottky barrier would influence the generation of reactive oxygen species (ROS). However, the detailed correlation between the Schottky barrier height and the type of ROS is not well established. Herein, a type of Aurivillius material, SrBi2Ta2O9 (SBTO) and its composite materials Ag loaded SBTO (Ag@SBTO), were synthesized for different bacteria inactivation and pollutants degradation under ball milling (BM). The results showed that Ag@SBTO3 (0.76 wt% Ag) could lead 7.46 log10 of E. coli K12 inactivation, which was 21.3 times higher than that of SBTO. And Ag@SBTO3 also can achieve about 98.05% of Oxytetracycline degradation, while SBTO showed a better efficiency in Minocycline Hydrochloride and Rhodamine B degradation, the degradation efficiency can reach up to 92.60% and 75.04%, respectively. The variety of catalytic efficiency can be attributed to the different Schottky barrier height and the reduced activation energy of the piezo system when they were subjected to BM effect, which ultimately changed the type of ROS. Our results confirmed that ·OH and ·O2– were the main ROS for SBTO and Ag@SBTO3 during the experiments, respectively, and BM lowering the Schottky barrier of Ag loading piezoelectric material was a facile strategy to generate different ROS for a wide range of applications in water pollution control and drinking water safety.

Can the concentration of elements in wild-growing mushrooms be deduced from the taxonomic rank?

The mineral composition of wild-growing mushroom species is influenced by various environmental factors, particularly the chemical properties of the soil/substrate. We hypothesised that element uptake might also correlate with taxonomic classification, potentially allowing us to predict contamination levels based on mushrooms within the same taxonomic rank. This study compared the mineral composition (Ag, As, Ba, Ca, Cd, Co, Cu, Fe, Hg, K, Mg, Mn, Mo, Na, Ni, Pb, Se, and Zn) of 16 saprotrophic mushroom species from 11 genera across 4 families and 2 orders. Among these were 13 edible and 3 inedible mushrooms, all collected from natural, wild stands in a forest in central-western Poland between 2017 and 2020.Phallus impudicus exhibited the highest mean content of Ba (together with Phallus hadriani) (6.63 and 8.61 mg kg−1, respectively), Ca (with Paralepista gilva and Stropharia rugosoannulata) (803, 735 and 768 mg kg−1, respectively), Cd (with Lycoperdon perlatum) (3.59 and 3.12 mg kg−1, respectively), Co (0.635 mg kg−1), and Fe (with P. hadriani and S. rugosoannulata) (476, 427 and 477 mg kg−1, respectively), while Macrolepiota mastoidea showed the highest content of Ag (1.96 mg kg−1), As (with Coprinus comatus) (1.56 and 1.62 mg kg−1, respectively) and Cu (with Macrolepiota procera and Chlorophyllum rhacodes) (192, 175 and 180 mg kg−1, respectively). Comparing the content of the analysed elements in the genera represented by at least two species, a similarity was observed, the same as the mean concentration in soil under these species.Soil characteristics could be a superior factor that overshadows the impact of the mushroom genus on the elements accumulation, obscuring its role as a determinant in this process. The results are not definitive evidence that belonging to a particular taxonomic rank is a prerequisite condition affecting the accumulation of all elements. A closer focus on this issue is needed.

Scalable flexible and stretchable high performance UV photodetector based on MoS2-WO3/Ag composite on a PU substrate by utilizing LIG electrodes

The rapid advancements in photodetector device technologies have captivated the optoelectronic industry owing to their strong features, such as wearability, stretchability, energy efficiency, scalability and cost-effectiveness. However, there is still scope for enhancement in device performance, reliability, and scalable fabrication. In this research work, we have proposed a novel strategy for fabricating stretchable ultraviolet (UV) photodetector (PD) on a polyethylene glycol solution-processed synthesis of MoS2-WO3/Ag composite-based nanocrystals onto a polyurethane (PU) substrate. Moreover, laser induced graphene (LIG) interdigitated electrode arrays for swift photogenerated charge extraction due to their high conductivity. The device displays high photoresponsivity, external quantum efficiency, and specific detectivity, measured at 6.84 A/W, 143 %, and 2.87×1011 Jones, respectively. Additionally, the device demonstrates a quick response time of 80 ms when exposed to 360 nm light, indicating its high speed. These essential advantages have a great potential for applications in real life and mass production. The integration of advanced materials and LIG electrodes enhances the device capability for next-generation stretchable, flexible and wearable electronic devices.

Enhanced Microstructural and Performance Characteristics of Cu–18 Pct Ag Composites Through Elemental Additions

Enhanced Microstructural and Performance Characteristics of Cu–18 Pct Ag Composites Through Elemental Additions

Mechanical properties and current-carrying tribological behaviors of sliver-titanium nitride composite ceramic coating

Current-carrying friction materials with excellent electrical conductivity and anti-wear ability are in constant demand in both academia and industry. In this work, the sliver-titanium nitride (Ag–TiN) composite ceramic coating was fabricated by an arc ion plating method. The microstructure, chemical composition, crystal structure, mechanical properties and current-carrying tribological behaviors of the Ag–TiN composite coating were systematically studied and the worn surfaces were also thoroughly investigated to analyze the possible tribological mechanisms in detail. The results showed that the Ag–TiN composite ceramic coating achieved uniformly distributed co-deposition of Ag and TiN compositions and exhibited excellent mechanical properties and electrical conductivity. The current-carrying tribological tests also revealed that the Ag–TiN composite coating exhibited exceptional friction reducing, anti-wear and conductive properties during the friction process. The analysis of the worn surface showed that the excellent current-carrying tribological behaviors of the Ag–TiN composite ceramic coating were related to the excellent electrical conductivity, the appropriate mechanical properties and the tribo-layer film formed on the worn surface.

Antioxidant and dye degradation activity of green synthesized silver-iron oxide (Ag-Fe2O3) bimetallic nanoparticles

This research introduces an eco-friendly method for synthesizing silver-iron oxide bimetallic nanoparticles using cabbage peel extract, serving as both reducing and stabilizing agents. The successful production of nanoparticles is comprehensively analyzed through UV-Vis spectroscopy, Fourier transformation infrared spectroscopy (FTIR), energy dispersive X-ray spectroscopy (EDX), X-ray diffraction (XRD) and field emission scanning electron microscopy (FESEM). The UV, XRD and EDS results indicated the elemental composition of Ag and Fe, suggesting the formation of a silver-core iron-shell bimetallic nanoparticles with a size of 22.3 nm, which was followed by an assessment of their antioxidant and catalytic properties. The findings revealed notable antioxidant capabilities, along with the efficient degradation of methyl red and phenol red dye. Remarkably, the Ag-Fe2O3 bimetallic nanoparticles exhibited good scavenging activity, reaching 63.87% at a concentration of 1000 µg/mL. The most significant dye degradation is observed for phenol red, achieving a remarkable 78% degradation within just 8 minutes. These results indicate the potential of Ag-Fe2O3 bimetallic nanoparticles derived from cabbage peels as promising agents for antioxidant and catalytic applications, especially in addressing dye-contaminated wastewater concerns.