Copper Doped Zinc Oxide Nanoparticles Research Articles

Facile Green Synthesis of Undoped ZnO and Copper-Doped Zinc Oxide Nanoparticles using Albizia lebbeck leaf extract: Electrochemical Insights and Anti-Corrosion Potential

Facile Green Synthesis of Undoped ZnO and Copper-Doped Zinc Oxide Nanoparticles using Albizia lebbeck leaf extract: Electrochemical Insights and Anti-Corrosion Potential

Designing copper-doped zinc oxide nanoparticle by tobacco stem extract-mediated green synthesis for solar cell efficiency and photocatalytic degradation of methylene blue

This study presents the green synthesis of copper-doped zinc oxide (Cu-doped ZnO) nanoparticles using tobacco stem (TS) extract. The environmentally friendly synthesis method ensures distinct features, high efficiency, and applicability in various fields, particularly in solar cell technology and photocatalytic applications. ZnO nanostructures are investigated due to their unique properties, cost-effectiveness, and broad range of applications. The nanoparticles are synthesized with varying Cu concentrations, and their structural, morphological, and compositional characteristics are thoroughly analyzed. The Cu-doped ZnO nanoparticles exhibit improved properties, such as increased surface area and reduced particle size, attributed to the incorporation of Cu dopants. The green synthesis approach using TS extract serves as a stabilizing agent and avoids the toxicity associated with chemical methods. Characterization techniques including SEM, TEM, EDX, FTIR, and XRD confirm the successful synthesis of the nanoparticles. Photocatalytic degradation studies reveal that the 5% Cu-doped ZnO exhibits the highest photocatalytic activity against methylene blue, attributed to synergistic effects between Cu and ZnO, including oxygen vacancy and electron–hole pair recombination rate suppression. The photocatalytic mechanism involves the generation of superoxide and hydroxyl radicals, leading to methylene blue degradation. Furthermore, the Cu-doped ZnO nanoparticles demonstrate promising photovoltaic performance, with the optimal efficiency observed at a 5% Cu concentration. The study suggests that Cu-doped ZnO has the potential to enhance solar cell efficiency and could serve as an alternative material in solar cell applications. Future research should focus on refining Cu-doped ZnO for further improvements in solar energy conversion efficiency

Performance of copper doped zinc oxide nanoparticles synthesized through solid state reaction route for humidity sensing device

In the current study, the moisture-sensing properties of three Copper (1%) doped Zinc Oxide nanomaterials, CZ-1, CZ-2, and CZ-3, are examined. These substances were created by solid-state interactions involving Cu2O and ZnO, CuO and ZnO, and, separately, Cu and ZnO. After four hours of annealing at 700°C for each of the three pellet samples, humidity-sensing tests were conducted. Throughout the whole range of relative humidity percent (15-90%RH) at room temperature, it was observed that the electrical resistance of all three nanomaterials reduced steadily. Powder x-ray diffractometer and scanning electron microscopy analyses were performed on the nanomaterial pellets to determine their crystallinity, structural phases (gross crystal structure), and surface morphology. Both the Scherer's approach and the Williamson and Hall's method were used to determine the crystallite size of the three samples, CZ-1, CZ-2, and CZ-3. The CZ-3 sample annealed at 700°C had the lowest crystallite size (36 nm) and the highest humidity sensitivity of the three samples.

Electrochemical detection and removal of brilliant blue dye via photocatalytic degradation and adsorption using phyto-synthesized nanoparticles.

Herein, we report a sensitive electrochemical platform prepared by modifying the electrode surface with copper-doped zinc oxide nanoparticles; these nanoparticles were prepared via a green synthetic approach using the extract of Cassia fistula leaves and multiwalled carbon nanotubes (MWCNTs). For the best response of the electrode modifier, a number of experimental conditions were optimized to obtain the most intense signal of the target analyte Coomassie brilliant blue using a rapid analysis technique square wave voltammetry. The designed sensor displayed remarkable sensitivity for Coomassie brilliant blue with a detection limit of 0.1 nM under the optimized conditions. Moreover, the repeatability, specificity and reproducibility of the designed sensor demonstrated its potential for practical applications. The sensing platform was also used for monitoring the degradation kinetics of the Coomassie brilliant blue dye. Catalytic degradation of the dye was performed using the synergistic effect of Cu-ZnO NPs together with Fenton reagent. The dye degraded by 96% in 60 minutes under neutral conditions, which is one of the main achievements of this work that has never been reported. The photocatalytic breakdown of Coomassie brilliant blue was also monitored using UV-visible spectroscopy. The degradation kinetics results of both techniques agreed well. The adsorption of Coomassie brilliant blue using ZnO NPs was monitored spectrophotometrically. The adsorption data were fitted in a pseudo-second order kinetic model by following the Langmuir isotherm at lower concentration and Freundlich isotherm at higher concentration.

Development of a Cu/ZnO@ZIF-8 nanocomposite as a pH-responsive drug delivery vehicle for the sustained release of doxorubicin in human lung cancer cell lines

Nowadays the targeted drug release from a stable and non-toxic drug delivery vehicle is an onerous task. In this work, we developed a ZIF-8 based nanocomposite by the incorporation of copper doped zinc oxide nanoparticles onto the ZIF-8 frameworks. The formation of the composite was confirmed with the help of various spectral analyses such as FTIR, UV–visible, PXRD, XPS, TEM, SEM-EDS, TG/DTG, BET, and photoluminescent spectroscopy. The feasibility of the material as a drug delivery vehicle was analyzed by loading doxorubicin (DOX) and monitoring its release in human lung cancer cell line A549 under different pH conditions such as 1.2, 5.5, and 7.4. The release kinetics is in good agreement with the Higuchi model with a regression coefficient of 0.9999. The composite possesses a better drug loading capacity of 43.2 % and follows a sustained release kinetics at pH 5.5. The biocompatibility of the material is also noticed by monitoring the in vitro cytotoxicity and anticancer activity through MTT assay. The composite material shows a cytotoxicity of 71.99 % against human lung cancer cell line A549 and cell viability of 37 % towards the normal fibroblast cell line L929 at 100 μg/mL. The anticancer activity of the composite loaded with DOX was compared with the pure DOX. The results showed that the composite loaded with DOX shows better anticancer activity than that of pure DOX with an IC50 of 69.89 μg/mL, lower than that of pure DOX (85.52 μg/mL). The combined effect such as better drug loading, sustained and pH-responsive release and potential anticancer activity leads to the conclusion that the ZIF-8 based nanocomposite can be used as a better therapeutic agent against human lung cancer cell line A549.

All-in-one supercapacitors with high performance enabled by Mn/Cu doped ZnO and MXene

Here, we report the development of high-performance supercapacitor devices using manganese-doped zinc oxide nanowires (Mn-doped ZnO NWs) and copper-doped zinc oxide nanoparticles (Cu-doped ZnO NPs) as a positive electrode with MXene as a negative electrode. Both transition metal (TM)-based electrodes were used separately with MXene, and the performance was tested. When used in combination with MXene as a second electrode, TM-ZnO samples displayed a major increase in the supercapacitors’ performance. The highest-performance supercapacitor recorded values of 151 F/g specific capacitance along with 84 Wh/kg energy density and a power density of 75 kW/kg. Electron paramagnetic resonance and photoluminescence spectroscopy of Mn/Cu-doped ZnO reveals intrinsic and extrinsic defect signals, which were discussed and attributed to the enhancement of the capacitive performance. The presence of the aforementioned defects optimizes the intrinsic properties and boosts the reaction kinetics, thus providing increased electrochemical activity and superior supercapacitor device performance.

Copper-Doped Zinc Oxide Nanoparticles: Synthesis, Characterization, and Application for Adsorptive Removal of Toxic Azo Dye

The goal of this research was to employ copper-doped zinc oxide nanoparticles (Cu/ZnONPs) as an adsorbent to remove the potentially toxic azo dye Congo red (CR). The Cu/ZnONPs were made using a chemical coprecipitation method, and their characteristics were examined using XRD, SEM, EDS, and FTIR methods. The response surface methodology (RSM) central composite design (CCD) is used to optimize the operational parameters’ agitation time, adsorbent dosage, solution pH, and initial concentration of CR solution during the adsorption process. The agitation period of 29.48 min, the Cu/ZnONP dosage of 0.301 g/L, the solution pH of 6.96, and the CR initial concentration of 90 mg/L resulted in a maximum CR adsorption of 94.14% and a desirability of 0.976. The kinetic findings fit the pseudo-second-order kinetic equation, and the equilibrium data agreed with the Langmuir isotherm (maximum uptake capacity qmax = 250 mg/g). During the thermodynamic experiments, endothermic, spontaneous, and physical adsorptions were observed.

Inquest on photocatalytic and antibacterial traits of low composition Cu doped ZnO nanoparticles

Copper-doped Zinc Oxide nanoparticles (Zn1-xCuxO; x = 0, 0.025, and 0.05) were synthesized by viable hydrothermal method. Structural, morphological, and optical studies were done to characterize the material’s properties. The samples were tested as adsorbents to study their dye degradation potential using Methylene Blue (MB) as a model dye. The antibacterial potential of ZnO nanorods upon Cu doping was performed by disc diffusion method against both gram-negative and gram-positive bacteria. The results thus reveal the practical applicability of prepared samples in photodegradation and antibacterial applications.

High-Performance, non-Enzymatic Glucose Sensor Based on Fe and Cu Doped ZnO/rGO Based Nanocomposite

In the present work, the fabrication and performance of glucose sensor based on zinc oxide (ZnO) nanoparticles (NPs) and their composite is demonstrated. ZnO nanostructures possess fascinating properties like large surface area, superior crystal nature and good electrical as well as optical properties. Co-precipitation method was used to fabricate ZnO NPs, iron doped and copper doped ZnO NPs and their composite with reduced graphene oxide (rGO). The structural parameters of pure and doped samples were investigated by X-ray diffraction method. Functional group study of the sample was carried out by fourier transform infrared spectroscopy. Morphological study of bare ZnO, iron doped ZnO, copper doped ZnO and their composite with rGO were studied by SEM. XRD pattern showed that ZnO had hexagonal wurtzite structure. The studies of electrochemical properties of the electrode using cyclic voltammetry showed that prepared samples were promising for the development of cost effective and non-enzymatic electrochemical based glucose sensor with excellent characteristics. The prepared iron doped ZnO/rGO based composite signify greater sensitivity and greater electrocatalytic activity than rest of the composition considered in current study.

Synthesis, structure, and improved frequency-dependent transport properties of copper doped zinc oxide nanoparticles at high temperatures

The nanostructures of ZnO are studied in this research utilizing a simple, eco-friendly, and cost-effective co-precipitation have a formula Zn 1 − x Cu ( x ) O with (x = 0.0, 0.03, 0.06, and 0.10). The effects of copper (Cu) doping on structure, morphology, impedance, dielectric, and electrical conductivity were investigated using an XRD, SEM, and LCR meter, respectively. All prepared samples have a hexagonal wurtzite structure, and the average crystalline size varies between 46 and 56 nm, according to the XRD spectra. Impedance measured data analyzes that a capacitance phase element perfectly modulates the fabricated samples with the equivalent circuits. Depending on the temperature, the examination of complex impedance and complex electrical modulus revealed a non-Debye types relaxation process. The Arrhenius plots for the conduction mechanism were used to investigate single activation energy. A correlated barrier hopping (CBH) model dominated the conduction process in un-doped and Cu-doped ZnO nanoparticles. The dielectric measurements in low-frequency at high temperatures regions exhibited high dielectric constant values for the prepared samples. Compared to undoped ZnO, the dielectric constant values increase with Cu concentration, also improving the ac conductivity of all Cu-doped ZnO nanoparticles, making them a suitable choice for energy storage applications. The electrical modulus displays a dual nature of relaxation times for all synthesized samples with lower values. • Pure ZnO and Cu-doped ZnO nanostructures have been fabricated using a Co-precipitation method. • The average crystalline size of ZnO and Cu-doped ZnO nanostructures lies at 46 nm to 56 nm. • The samples of pure and Cu-doped ZnO nanostructures showed negative temperature coefficient resistance (NTCR). • Dielectric and ac conductivity properties improved with the addition of Cu concentrations. • The Cu-doped ZnO nanostructures shall be beneficial for optoelectronics applications.

Coated Cu-doped ZnO and Cu nanoparticles as control agents against plant pathogenic fungi and nematodes

In the current study, coated copper nanoparticles with polyethylene glycol 8000 (Cu@PEG NPs) and copper-doped zinc oxide nanoparticles with diethylene glycol (Cu-doped ZnO@DEG NPs) have been synthesized via solvothermal and microwave-assisted process, physicochemical characterized, and studied as nano-fungicides and nano-nematicides. Spheroidal Cu-doped ZnO@DEG NPs and urchin-like Cu@PEG NPs have been isolated with average crystallite sizes of 12 and 21 nm, respectively. The Cu doping (11.3 wt%) in ZnO lattice (88.7 wt%) was investigated by Rietveld refinement analysis and confirmed by X-ray Diffraction (XRD) and X-ray Photoelectron Spectroscopy (XPS). The Cu-doped ZnO@DEG and Cu@PEG NPs revealed a growth inhibition of fungi Botrytis cinerea (B. cinerea) and Sclerotinia sclerotiorum (S. sclerotiorum) and nematode paralysis of Meloidogyne javanica in a dose-dependent manner. Cu-doped ZnO@DEG NPs were more effective against M. javanica (EC50 = 2.60 μg/mL) than the Cu@PEG NPs (EC50 = 25 μg/mL). In contrast, the antifungal activity was approximately similar for both NPs, with EC50 values at 310 and 327 μg/mL against B. cinerea, respectively, and 260 and 278 μg/mL against S. sclerotiorum, respectively. Lettuce (Lactuca sativa) plants were inoculated with S. sclerotiorum or M. javanica and sprayed with either Cu-doped ZnO@DEG NPs or Cu@PEG NPs. The antifungal effect was evaluated based on a disease index (DI), and nematicidal activity was assessed based on the total number of galls and nematode females per root gram. NPs successfully inhibited the growth of both pathogens without causing phytotoxicity on lettuce. The DI were significantly decreased as compared to the positive control (DI = 5.2), estimated equal to 1.7, 2.9 and 2.5 for Cu@PEG NPs, Cu-doped ZnO@DEG NPs and the chemical control (KOCIDE 2000), respectively. The reduction in galling and population of M. javanica ranged from 39.32% to 32.29%, statistically like chemical control. The treatment of lettuce plants with Cu-doped ZnO@DEG NPs increased the leaf net photosynthetic value at 4.60 and 6.66 μmol CO2−2 s−1 in plants inoculated with S. sclerotiorum and M. javanica, respectively, as compared to the control (3.00 μmol CO2−2 s−1). The antioxidant capacity of NPs treated lettuce plants was evaluated as 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging activity in leaf extracts. Plants inoculated with S. sclerotiorum and sprayed with Cu-doped ZnO@DEG and Cu@PEG NPs, exhibited a 34.22% and 32.70% increase in antioxidant capacity, respectively, higher than the control. Similarly, an increase in antioxidant capacity was measured (39.49 and 37.36%) in lettuce inoculated with M. javanica and treated with Cu-doped ZnO@DEG and Cu@PEG NPs, respectively. Moreover, an increase of phenolic compounds in lettuce leaf tissue treated with NPs was measured as compared to the control. Overall, foliar applied Cu and Cu-doped ZnO NPs could be a promising tool to control phytopathogenic fungi and nematodes contributing to sustainability of agri-food sector.

Gelatin/agar-based multifunctional film integrated with copper-doped zinc oxide nanoparticles and clove essential oil Pickering emulsion for enhancing the shelf life of pork meat

This work reports the fabrication of copper-modified zinc oxide nanoparticles (ZnO@Cu) added gelatin/agar-based multifunctional films loaded with clove essential oil Pickering emulsion (PEC). The ZnO@Cu particles were prepared using a simple precipitation method, and their successful synthesis was verified by X-ray Photoelectron Spectroscopy (XPS), X-ray Diffraction (XRD), and Field Emission Scanning Electron Microscopy (FESEM) analysis. The clove oil Pickering emulsion was developed using nanocellulose as a solid base. The addition of nanofillers (ZnO@Cu and PEC) improved the films’ physical performance. The films’ UV-shielding property was ∼ 99% enhanced without a significant decrease in their transparency, and the incorporation of fillers also enhanced their mechanical properties. The gelatin/agar films also showed strong antimicrobial activity on ZnO@Cu and PEC addition, where a 100% eradication of L. monocytogenes and ∼ 50% decrease in the E. coli population was detected. Further, the antioxidant activity of the functional films was twice the original value obtained for neat films due to the presence of PEC. The developed multifunctional film was applied to wrap the pork belly meat before vacuum packaging, which helped significantly reduce its total aerobic bacterial count and lipid oxidation. The multifunctional film could successfully improve the shelf life of wrapped meat.

Influence of Urbach energy in enhanced photocatalytic activity of Cu doped ZnO nanoparticles

This article reports the photocatalytic activity of Copper doped Zinc oxide nanoparticles synthesized using a simple co-precipitation method. The samples synthesized were characterized by XRD, FESEM, nitrogen surface area analysis, UV–Vis spectroscopy and photoluminescence studies. XRD investigations have confirmed the formation of the wurtzite phase. The direct bandgap of the material has been obtained by UV–vis absorption analysis and the bandgap narrowing is observed. Room temperature photoluminescence studies at an excitation wavelength of 330 nm show emission in the UV and visible regions. Furthermore, to estimate the photocatalytic activity of the prepared sample, the degradation activity against methyl orange dye has been investigated successfully. Cu doped samples show a better photocatalytic activity than the pure ZnO sample and the contribution of Urbach energy in photocatalytic activity has been discussed.

Enhanced catalytic and biological activities of Cu doped ZnO nanoparticles synthesized by microwave assisted method

Copper doped zinc oxide nanoparticles (Cu-ZnO Nps) are known to be one of the multifunctional inorganic materials with effective antibacterial activity. In the present study, un-doped and copper doped zinc oxide with varying concentration i.e., Zn1-x CuxO (where x = 0, 0.01, 0.02 and 0.03%) have been synthesized via microwave assisted method and characterized by XRD, SEM, EDAX, TEM, UV-VIS-DRS spectroscopy. X-ray diffraction studies show that the Cu-ZnO Nps exhibit hexagonal wurtzite structure and the particle size are found to be within the range between 20 to 35 nm. Cu-ZnO Nps exhibit appreciable catalytic activity (89.9% yields) in the transformation of benzylalcohol to benzaldehyde. Significant antibacterial activity is shown by Cu-ZnO Nps against bacterial strains such as E. coli, S. aureus, Klebsiella and B. subtilis with zone of inhibition of 15 ± 0.08, 17 ± 0.21, 21 ± 0.01 and 23 ± 0.69 mm respectively in contrast to standard antibiotic streptomycin. The in vitro cytotoxicity of ZnO and Cu-ZnO Nps has been determined against human breast (MCF7) and human cervical (HeLa) cancer cell lines using MTT assay.

Cu-ZnO nanoparticles for photocatalytic degradation of methyl orange

Photocatalytic degradation of textile dye derivative Methyl Orange (M.O) has been studied in aqueous medium using 2% copper doped zinc oxide (2% Cu-ZnO) nanoparticles under UV irradiation. Simple inexpensive chemical precipitation method was used for synthesis of pure and copper doped zinc oxide nanoparticles. The prepared nanoparticles pure and copper doped zinc oxide was characterized by X-ray Diffraction Technique (XRD), Scanning Electron Microscopy (SEM) and Energy Dispersive X-ray analysis. The prepared nanoparticles were hexagonal wurzite structure. Photocatalytic efficiency of 2% Cu-ZnO were evaluated by studying mineralization of methyl orange (M.O.) as a model compound. The M.O. kinetics degradation was investigated under different parameters such as pH of the medium, catalyst dosage, M.O concentration, intensity of light etc. In addition reusability aspects of nanoparticles where also studied, which reveals that reused nanoparticles exhibited same results as that of virgin particles. Copyright © 2018 VBRI Press.

Synergistic effects of Cu-doped ZnO nanoantibiotic against Gram-positive bacterial strains.

A viable hydrothermal technique has been explored for the synthesis of copper doped Zinc oxide nanoparticles (Cu-doped ZnO-NPs) based on the precursor’s mixture of Copper-II chloride dihydrate (CuCl2.2H2O), Zinc chloride (ZnCl2), and potassium hydroxide (KOH). X-ray diffraction (XRD) reported the hexagonal wurtzite structure of the synthesized Cu-doped ZnO-NPs. The surface morphology is checked via field emission scanning electron microscopy (FE-SEM), whereas, the elemental compositions of the samples were confirmed by Raman, and X-ray photoelectron spectroscopy (XPS), respectively. The as-obtained ZnO-NPs and Cu-doped ZnO-NPs were then tested for their antibacterial activity against clinical isolates of Gram-positive (Staphylococcus aureus, Streptococcus pyogenes) and Gram-negative (Escherichia coli, Klebsiella pneumonia) bacteria via agar well diffusion method. The zone of inhibition (ZOI) for Cu-doped ZnO-NPs was found to be 24 and 19 mm against S. Aureus and S. pyogenes, and 18 and 11 mm against E. coli and K. pneumoniae, respectively. The synthesized Cu-doped ZnO-NPs can thus be found as a potential nano antibiotic against Gram-positive multi-drug resistant bacterial strains.

Cu-Doped ZnO Nanoparticles for Non-Enzymatic Glucose Sensing.

Copper-doped zinc oxide nanoparticles (NPs) CuxZn1−xO (x = 0, 0.01, 0.02, 0.03, and 0.04) were synthesized via a sol-gel process and used as an active electrode material to fabricate a non-enzymatic electrochemical sensor for the detection of glucose. Their structure, composition, and chemical properties were characterized using X-ray diffraction (XRD), transmission electron microscopy (TEM), Fourier-transform infrared (FTIR) and Raman spectroscopies, and zeta potential measurements. The electrochemical characterization of the sensors was studied using cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS), and differential pulse voltammetry (DPV). Cu doping was shown to improve the electrocatalytic activity for the oxidation of glucose, which resulted from the accelerated electron transfer and greatly improved electrochemical conductivity. The experimental conditions for the detection of glucose were optimized: a linear dependence between the glucose concentration and current intensity was established in the range from 1 nM to 100 μM with a limit of detection of 0.7 nM. The proposed sensor exhibited high selectivity for glucose in the presence of various interfering species. The developed sensor was also successfully tested for the detection of glucose in human serum samples.

Structural, electrical and optical properties of Zn1−xCuxO (x = 0.00–0.09) nanoparticles

Pure and copper doped zinc oxide nanoparticles (Zn1−xCuxO) of different concentrations (x = 0.0, 0.03, 0.06 and 0.09 wt%) were synthesized by using co precipitation method. During the next phase, effect of Cu concentration on structural, electrical and optical properties of ZnO-NPs were investigated with the multiple techniques like XRD, UV–visible spectroscopy, FTIR, and two probe methods. The XRD analysis confirmed hexagonal wurtzite crystal structure having crystallite sizes ranging between 18.3 and 24.2 nm. Rotational and vibration mode of different functional groups (OH, CH, C = O and ZnO) were calculated using FTIR spectra. Moreover, the UV visible spectroscopy identified a band gap (3.10–2.30 eV) of pure and Cu doped ZnO-NPs. Finally, electrical properties like conductivity was increased and whereas, the resistivity decreased with increasing Cu dopant concentrations. Overall, addition of Cu as doping agent improved the structural, optical and electrical properties ZnO-NPs and could enable multiple further potential applications like solar cell, energy storage and other optoelectronic devices.

Effects on Structural, Functional groups and Photo Luminance Properties of Copper Doped Zinc Oxide Nanoparticles

Present study we reported the structural, optical and functional group study of copper-doped zinc oxide nanoparticles (NPs) synthesized by chemical co-precipitation method. In this study doping concentration of copper (0.2, 0.4, 0.6) was incorporated in zinc oxide. All the synthesized samples were characterized by X-ray diffraction (XRD) as well as Fourier transform infrared (FTIR) and studied the photo luminance (PL) property. XRD study confirms the structural and purity of ZnO and Cu doped ZnO nanoparticles. The average grain size of pure ZnO was calculated by Scherrer formula and it varied according to doping concentration from 25.10 to 20.26 nm. The average grain size of pure ZnO was decreased for Cu-doped samples. The presence of functional groups and chemical bonding were confirmed by FTIR. Due to the doping concentration of copper the structural, functional group and photo luminance properties of ZnO was changed drastically.

Dependence of the electrical properties of Cu-doped ZnO nanoparticles decorated by Ag atoms

Abstract Silver decorated copper doped zinc oxide nanoparticles (Ag@Cu-ZnO) were successfully prepared via sol gel method. X-ray diffraction analysis revealed ZnO wurtzite crystalline structure with the existence of minor peaks attributed to Cu and Ag. The presence of Cu and Ag in addition to ZnO lattice was supplementary verified by EDS data while the shift in the FTIR band confirmed the Cu incorporation within the ZnO host lattice. Both SEM and XRD revealed an increase in particle size with Ag loading. At different frequencies, electrical measurements demonstrated a decrement in the dielectric constant, dielectric loss and AC conductivity with the increment of Ag content. Meanwhile, the Nyquist plots of the impedance measurement showed a single semicircle arc indicating the predominance of grain boundary resistance. This study elucidated the great influence of Ag on Cu-doped ZnO nanoparticles’ structural, dielectric constant and electrical conductivity which make it a promising candidate for catalytic, photocatalytic and adsorption applications.