Pure CuO Research Articles

Photoabsorption, photoluminescence, and chromaticity properties of pure CuO and CuO-Y2O3 composites for white light-based emitting diode applications

The primary goal of the present exploration is to test the photoluminescence (PL) responses and chromaticity features of pure CuO and CuO-Y2O3 composites for white light-emitting devices. The aforementioned compounds were synthesized using copper acetate and oxalic acid in the absence and presence of different weights of yttrium nitrate salt via the co-precipitation method. Using powder XRD study, the pure CuO sample has identified the monoclinic structure; however, the primary phase-monoclinic structure of CuO with the secondary phase-yttrium oxide appeared for the synthesized composites samples. Experimentally scrutinize the microstructure and the presence of chemical bonds in the synthesized compounds by employing selected tools such as SEM, FT-IR, and EDX studies. To confirm with the optical absorption spectra study, optical band gap values have increased in the CuO-Y2O3 samples when compared to the pure CuO. Blue, green, and red emission peaks have been recorded through photoluminescence (PL) measurements for the pure CuO and all synthesized CuO-Y2O3 composites. PL results reveal that oxygen vacancy defects were increased in all synthesized CuO-Y2O3 composites when compared to the pure CuO. With the help of the obtained photoluminescence spectra data, we made the CIE 1931 chromaticity diagram for the synthesized pure CuO and CuO-Y2O3 composites suitable for LED devices.

BIOCIDAL PROPERTIES OF CUONANOPARTICLES

Biocides are products used to prevent or control the spread of various harmful organisms such as bacteria or viruses. Silver and gold nanoparticles are mostly used as active substances of biocides used in the medical field. However, a more economically acceptable alternatives are different copper compounds, specificallycopper(II) oxide. CuO nanoparticles were gained via sonicationmethod from copper(II) acetate in a sodium hydroxide solution. Physical and chemical properties of gained CuO nanoparticles were investigated by X-ray diffraction analysis (XRD), energy dispersive X-ray spectroscopy (EDS), thermogravimetric analysis (TGA)and atomic force microscopy (AFM). Biocidal tests were performed on bacteria Pseudomonas aeruginosaand Bacillus subtilis,as well on fungi Candida albicansand Aspergillus nigerusing the disc diffusion method. The ultrasonic irradiation method was found to yield pure CuO nanoparticles smaller than 70 nm. Also, EDS measurement verified the stoichiometric distribution of copper and oxygen in the sample.Antimicrobialproperties were proven excellent for both bacteria and fungiexcept for Pseudomonas aeruginosa,for which CuO nanoparticles seem to have low effect. KEYWORDS:copper(II) oxide; sonication; antimicrobialproperties

Synthesis and characterization of p-CuO/n-ZnO heterostructured composite thin films for the detection of formaldehyde gas.

We report the synthesis and characterization of pure CuO and CuO-ZnO nanostructured composite thin films sprayed on particle-free glass substrates using chemical spray pyrolysis method. The films were systematically analyzed through microstructural, morphological, chemical, and gas-sensing studies. X-ray diffraction (XRD) studies confirmed the polycrystalline nature of the films, with a predominant monoclinic phase along the (002) direction. Key structural parameters, such as crystallite size, dislocation density, strain, and the number of crystallites per unit area, were reported from XRD analysis. Field emission scanning electron microscopy (FESEM) revealed a bundled-like morphology with uniform particle distribution, enhancing the surface area for effective gas interaction. X-ray photoelectron spectroscopy (XPS) results indicated that Cu and Zn ions existed predominantly in the 2+ oxidation state, contributing to the films' reactivity. Significantly, the gas sensing studies were investigated with static liquid distribution method, highlighting the remarkable performance of the 30 wt.% CuO-ZnO composite thin film. This composite exhibited a substantial response to 5 ppm formaldehyde at ambient conditions, showing a recovery time of 22 seconds and a response time of 15 seconds. These findings underscore the potential of CuO-ZnO composites for efficient formaldehyde gas sensing applications, marking a notable advancement in the field of environmental monitoring.

Supercapacitor performance of pure and Ni-doped CuO electrodes prepared by USP

Abstract In this study, the ultrasonic spray pyrolysis (USP) technique was employed to fabricate pure and 3% Ni-doped copper oxide (CuO) thin films (TFs) on In2O3/SnO2 (ITO) coated glass substrates. X-ray diffraction (XRD) analysis revealed that both pure and 3% Ni-doped CuO TFs exhibit a polycrystalline structure with the tenorite phase oriented preferentially along the (111) plane. The morphological properties of these TFs were characterized using scanning electron microscopy (SEM) and atomic force microscopy (AFM) imaging. Energy dispersive x-ray spectroscopy (EDX) confirmed that the deposited TFs achieved the desired stoichiometry. The electrochemical properties of both pure and 3% Ni-doped CuO TFs were evaluated using cyclic voltammetry (CV), galvanostatic charge/discharge (GCD), and electrochemical impedance spectroscopy (EIS). At a current density of 1 A g−1, the specific capacitance of pure CuO TFs was found to be 78 F g−1, decreasing to 2 F g−1 at 10 A g−1. In contrast, Ni-doped CuO TFs exhibited a specific capacitance of 722 F g−1 at 1 A g−1 and 20 F g−1 at 10 A g−1. These results indicate that Ni-doping significantly enhances the specific capacitance values. The superior performance of Ni-doped CuO electrodes is attributed to their uniformly high porosity and improved electrical conductivity, demonstrating Ni-doped CuO as an optimal electrode material for pseudocapacitors.

A comparative analysis of optical and electrical properties of pure CuO and Zn doped CuO nanoparticles for optoelectronic device applications

A comparative analysis of optical and electrical properties of pure CuO and Zn doped CuO nanoparticles for optoelectronic device applications

Enhanced photoelectrochemical CO2 reduction activity towards selective generation of alcohols over CuxO/SrTiO3 heterojunction photocathodes

Photoelectrochemical reduction (PECR) of CO2 to value-added chemicals and fuels will reduce the dependency on fossil fuels, also it will solve environmental issues that arise due to greenhouse gases. A heterojunction of CuxO/SrTiO3 with varying post-annealing temperature ranges from 300 to 600 °C (CS300-600) was synthesized by overlying the spin-coated SrTiO3 on electrodeposited Cu2O over the FTO glass substrate. The synthesized photoelectrode's crystallinity and phase formation significantly varied by varying the post-annealing temperature, which was characterized via XRD and Raman spectroscopy. Optical, morphological, type of heterojunction formation and elemental surface oxidation states of photoelectrodes were studied through UV–visible DRS spectrum, FE-SEM, and XPS analysis respectively. Electrocatalytic analysis such as Linear Sweep Voltammetry (LSV), and Electrochemical Impedance Spectrometry (EIS) was employed, thus it conforms to the highest photocurrent density (−1.38 mA/cm2 at −0.6V vs. Ag/AgCl), and low charge transfer resistance (RCT=0.412 kΩ) at the electrode-electrolyte interfaces for CS500 photoelectrode as compared to others photoelectrodes. PECR of CO2 to liquid product formation was evaluated by applying different potential ranges (0 to −0.6 V vs. Ag/AgCl). Highest methanol formation of 48.69 μmol.cm−2hr−1, which is approximately 9 times enhanced as compared to the pure Cu2O (5.62 μmol.cm−2hr−1) photoelectrode at 0 V vs Ag/AgCl for CS500 heterojunction. Optimization of overlaying SrTiO3 synthesis temperature for crystallization formation on Cu2O and applied photoelectrode potential findings could pave the way for designing other new heterojunction types for selective liquid alcohol production.

Eco-friendly synthesis of CuO/Bi2O3 nanocomposite for efficient photocatalytic degradation of rhodamine B dye.

Plant-mediated synthesized materials are receiving more attention than conventional ones due to their wide availability, ease of access, simple preparation methods, environmental benign, and possess superior physicochemical properties. In this work, plant extract-mediated CuO, Bi2O3, and CuO/Bi2O3 nanocomposite samples were successfully synthesized using bamboo leaves extract as a capping agent. These materials were utilized for the photodegradation of Rhodamine B (RhB) dye, which served as a model organic dye pollutant. The physicochemical characterization techniques such as XRD, SEM-EDS, FTIR, and DRS-UV-vis spectrophotometry provide insight into the crystal structure, morphology, surface functional groups, and optical properties. These analyses confirm the effective formation of CuO, Bi2O3, and CuO/Bi2O3 materials. Surprisingly, upon calcination at 450°C for 4h, the color of the nanocomposite changed from pale green to gray greenish, providing evidence for the formation of the CuO in CuO/Bi2O3 nanocomposite. The photocatalytic optimization parameters such as pH (4), catalyst load (35mg), irradiation time (180min) and concentration of RhB (10 mg L-1) dye were investigated. By coupling CuO with Bi2O3 nanoparticles resulted in an improved photocatalytic property for the degradation of RhB dye under optimal conditions. As a result, CuO/Bi2O3 nanocomposite exhibited a significantly boosted photocatalytic degradation efficiency (95.6%) compared to pure CuO (40.2%) and Bi2O3 (80.5%) photocatalysts, with good reusability. For comparison purpose, the photocatalytic degradation of RhB dye using selected photocatalyst was evaluated under dark and sunlight systems. This eco-friendly approach holds great potential for synthesis new nanocomposite with modified properties, thereby enabling the practical application of high-efficiency photocatalysts. The plausible mechanism of the electrons and holes transfer was proposed.

Lattice matching strategy in Cu-based oxides for large-scale and long-term thermochemical energy storage

Redox-active metal oxides, particularly Cu-based oxide, are noteworthy for their economic feasibility and potential as a recyclable, zero-carbon energy source. These materials are poised to serve as a sustainable solution for large-scale and long-term thermochemical energy storage (TCES), thereby mitigating the intermittency challenges inherent in renewable energy systems. However, a significant impediment to their performance is the materials sintering at elevated temperatures, which precipitate a decline in cyclic reversibility, often manifesting even within the initial cycle of operation. To counteract this limitation, we proposed an innovative approach that leverages the concept of lattice matching, augmented by the incorporation of cigarette butts in the synthesis process to fabricate a Cu-Ce heterogeneous interface. This matched lattice preserved the integrity of the TCES material's porous architecture. Additionally, the lattice oxygen within this composite exhibits a transferability. Even after a prolonged period of two years under ambient air conditions, the TCES material retains the capacity to discharge a remarkable 99.4 % of its adsorbed energy. Furthermore, over the course of 600 cycles, the system's stability is remarkably preserved at 98–100 %, and reversible loss of pure CuO is ∼40 % within the initial cycle. Given these attributes, this TCES material emerges as a promising candidate for industrial applications.

Performance of Ag-doped CuO nanoparticles for photocatalytic activity applications: Synthesis, characterization, and antimicrobial activity

The auto-combustion method synthesized CuO NPs and Ag/CuO NPs. The Ag/CuO NPs were analyzed using Fourier-transform infrared, X-ray diffraction, scanning electron microscope, and Energy-dispersive X-ray spectroscopy instrumental analyses. The energy band gap, as determined by DRS properties, decreases from 3.82 to 3.50 eV for pure CuO and 10% Ag/CuO NPs, respectively. The photodegradation efficiency of Rhodamine-B & Carmine by 10% Ag/CuO NPs was nearly 98.9 and 97.8%, respectively. Antimicrobial trials revealed that the antimicrobial efficacy of Ag/CuO NPs at several dosages (20, 40, 60, 80, 100, and 120 µg/mL) against human pathogens was initially assessed using the agar well-diffusion method, and then the broth dilution method. Noticeably, the minimum inhibitory concentration of Ag/CuO NPs for all pathogens ranged from 100 to 120 µg/ml, was determined. Generally, the observed minimum microbicide concentration has a wide range of Ag/CuO NPs doses, ranging from 150 to 300 µg/ml, which helps kill (99.99%) all tested pathogenic cells. The largest relative inhibitory activities (%) were recorded against Escherichia coli (81.45 ± 1.39) at 120 g/mL of Ag/CuO NPs and 100 μg/mL (80.43 ± 0.59), followed by 80 µg/mL (72.33 ± 0.82). Additionally, the lowest relative inhibitory activities (%) were monitored versus fungal cells and Gram-positive bacteria at 120 µg/mL of Ag/CuO NPs as 52.17 ± 1.49 and 53.42 ± 1.71; respectively.Graphic abstract

Chemiresistive room temperature H2S sensor based on CunO nanoflowers fabricated by laser ablation

Hierarchical CunO nanoflowers were synthesized through the laser ablation of a CuO target in NaOH solutions for room-temperature (27 ℃) H2S detection. Notably, the pH value of NaOH solutions influenced both the micro-morphologies and compositions of the CunO products, as evidenced by XRD, XPS, SEM and TEM. In high pH solutions, the specific surface area of the CunO products increased, their thickness decreased, and the Cu2O content diminished, resulting in enhanced sensitivity, selectivity and stability of the CunO products’ response to H2S. Notably, the pH14# sample synthesized using an NaOH solution with a pH value of 14 featured pure CuO nanoflowers comprising slightly curled nanosheets with a thickness of approximately 10 nm. This sensor demonstrated excellent H2S sensing performance at room temperature, exhibiting a response value of 1.17 for 10 ppb H2S, along with high selectivity and good long-term stability. However, after exposure to H2S, the resistance of the sensor did not recover to its baseline in air at room temperature. Thermogravimetry results revealed that a temperature of 300 °C was effective for recovery of the sensor. Consequently, the operation temperature of the pH14# sensor was controlled using a micro-hotplate. In the pulse heating mode, the sensor’s response to 100 ppb H2S was 1.5, with a response time of 135 s and a recovery time of 137 s.

Boosting photoelectrochemical water splitting performance via nanostructured Ag-CuO thin films

Undoped and doped copper oxide (CuO) with silver (Ag) was prepared using the SILAR technique on the ITO substrate to generate green hydrogen from the water-splitting process. The (−111) and (111) were the most intense reflections of crystallographic planes observed in pure and Ag-doped CuO thin films. Ag doping within the crystal structure of pristine leads to increasing the crystallite size. FESEM images show homogeneity and uniform distribution for the pure and Ag-doped CuO thin films that confirm the particles have small sizes, give more features and are responsible for the target application. The doping process affected the energy band gap where it was 2.2 eV for the pure sample then descended to 1.9 eV as doping reached 5 % concentration of Ag element. The photoelectrochemical testing showed that the Ag 5 % content photoelectrode has a high value of photocurrent density approximately ∼ - 5 mA/cm2.

Green chemistry approach for the synthesis of CrxCu1-xO nanoparticles: An investigation of the structural and dielectric properties

Chromium (Cr)-doped copper oxide (CrxCu1-xO, x = 0, 0.02, 0.04, 0.06, 0.10) nanoparticles were prepared by a green chemistry approach using Juglans regia fruit extract. The characteristics of pristine and Cr-doped CuO were examined in relation to the concentration of the dopant (2, 4, 6, and 10mol%) using X-ray diffraction (XRD), Fourier Transform Infrared Spectroscopy (FTIR) Scanning electron microscopy (SEM), Energy dispersive analysis (EDX), and UV-Vis. spectroscopy (UV-Vis). According to the XRD results, the synthesized samples exhibited a polycrystalline nature and monoclinic crystal structure. It was discovered that the average grain size varies from 22.4nm to 17.82nm because of the addition of dopants. The optical analysis revealed an increase in the band gap from 1.62 to 3.10eV. We performed the dielectric analysis of pure and Cr-doped CuO nanoparticles and analyzed the behavior of dielectric parameters like dielectric constant, dielectric loss, and ac conductivity with frequency. The dielectric constant and loss exhibit a decreasing trend with frequency whereas ac conductivity demonstrates an increasing trend with frequency and composition.

Study of the structural and optical properties of pure copper oxide and doped with zinc at fixed weight percentages

Through this research, the effect of doping with zinc ions on the structural and optical properties of copper oxide particles doped with zinc at certain weight percentages was study using Radiofrequency plasma deposition technology. X-ray diffraction (XRD) analyses and field emission scanning electron microscopy were used to ascertain the materials' characteristics. Ultraviolet and visible spectroscopy of pure and doped thin films was also perform to calculate the band gap and electrical conductivity It was discovered using the XRD readings that the pure copper particles saturated with zinc had a crystalline size. It changes as Zn concentration rises and is influenced by the CuO lattice's strain and dislocation density. The thin film samples have structures resembling irregular and cubic grains, as demonstrated by the FE-SEM pictures. After doping with Zn, their homogeneity increases and adopts a regular granular nature. The band gap was also calculated for pure CuO particles as well as those doped with certain percentages of Zn. It was note that the addition of Zn worked to reduce Band gap for CuO

Harnessing the synergistic effect of CuO@Fe3O4/n-Si for high-efficiency photodiodes

High-performance photodetectors were fabricated using drop-casting method, employing pure CuO, Fe3O4 and CuO@Fe3O4 nanocomposite (NC). These devices aim to achieve enhanced responsivity (R), photosensitivity (Ps), detectivity (D∗), and external quantum efficiency (EQE). The XRD results indicate that the crystallite size of the CuO@Fe3O4 NC was reduced to around 20 nm, compared to 23 nm for pure CuO and 25 nm for pure Fe3O4. In addition, phase purity and functional groups were corroborated by Raman and FTIR analysis, supporting these findings. The bandgap energy of pure CuO and Fe3O4 was estimated to be around 1.25 and 1.22 eV, respectively, while the CuO@Fe3O4 NC exhibited a lower bandgap energy of 1.13 eV due to the interface between CuO and Fe3O4. Notably, the fabricated CuO@Fe₃O₄/n-Si photodiode exhibited excellent rectification properties under illumination, with an ideality factor (n) of 2.87 and a barrier height (ΦB) of 0.83 eV. The device achieved high Ps of 773.4 %, R of 542.6 mA/W, EQE of 208.7 %, and D∗ of 2.91 × 1012 Jones, demonstrating that the CuO@Fe3O4 NC is the most effective material for photodetection in this study.

Metal-organic frameworks derived curled sheet-like Cu2O/CuO heterostructure: Low-power N2H4 sensing

From the perspective of ensuring human health and industrial production safety, there is an urgent need for sensitive and effective detection of the highly toxic compound hydrazine (N2H4). In this work, precursor was used as self-template, and the curled sheet-like Cu2O/CuO composite was prepared by sintering treatment. Compared with pure CuO, the formation of p-p heterojunction in Cu2O/CuO composite promotes the transfer of charge carrier, resulting in more surface adsorbed oxygen and better N2H4 sensing performance. At 40 °C, the response of Cu2O/CuO sensor to 100 ppm N2H4 is 15.1, which is 1.9 times of that of pure CuO. The response/recovery time of the Cu2O/CuO sensor is 50 s/490 s, the minimum detection limit is 30 ppb, and has good selectivity and long-term stability (6 weeks). In addition, we investigated the sensing mechanism of N2H4 gas through X-ray photoelectron spectroscopy (XPS) and Gas chromatography-mass spectrometry (GC–MS) techniques. This study is the first time to achieve the detection of N2H4 gas using CuO based sensor.

Construction of SnO2/Cu2O heterojunctions for enhanced photocatalytic degradation of moxifloxacin

Herein, SnO2/Cu2O heterojunction composites were prepared using a hydrothermal method for moxifloxacin removal from water. Cu2O and SnO2 were detected in the composite samples, which exhibited between the two semiconductors. The introduction of SnO2 into pure Cu2O, forming a heterojunction structure, can enhance device charge conversion, improve photocurrent intensity and photogenerated electron-hole separation efficiency, and greatly improve photocatalytic performance. Moxifloxacin degradation by SnO2/Cu2O composites reached 86.4 %. The proposed catalytic mechanism was based on radical scavenging, with • O2‐ identified as the main active species. In addition, the moxifloxacin degradation intermediates were analyzed, with possible degradation pathways suggested.

Facile fabrication of graphene aerogel/Cu/CuO for enhanced sodium storage performance

It is widely recognized that CuO experiences volume expansion and conductivity issues, leading to unsatisfactory performance in sodium-ion batteries. A feasible approach to mitigate these challenges is the combination of Cu/CuO nanosheets with porous reduced graphene oxide aerogel (GA). In this study, an innovative composite of Cu/CuO nanosheets encapsulated within a 3D GA structure (GA/Cu/CuO) was synthesized via an alkaline exfoliation-mild self-assembly method. The results reveal that the Na+ storage properties of Cu/CuO/GA significantly surpassed those of pure CuO. Specifically, the GA/Cu/CuO exhibited a capacity retention of 320 mAh g–1 after 220 cycles at a current density of 0.1 A g–1, and demonstrated an optimized rate capability of 225 mAh g–1 at a current density of 1 A g–1. The enhanced rate and long-cycle performances are attributed to the synergistic effects of Cu/CuO nanosheets and porous GA, which shorten the Na+ transfer pathway, improve electronic/ionic conductivity, and buffer volume expansion during the discharge/charge process. Furthermore, the facile and innovative design strategy presented could be applicable to the synthesis of other composites for energy storage applications.

Novel Strategy for Efficient Recovery of CuO-Based Multiple-Metals from Copper Smelter Dust toward CO2 Electrocatalytic Reduction.

Copper smelter dust, a typical hazardous waste that is abundant in valuable heavy metals, holds the potential to be regarded as a promising resource. This study introduces a new approach that integrates chlorination roasting and cascade condensation to efficiently recover heavy metals from copper smelter dust. The findings demonstrate the successful separation of heavy metals (Cu, Pb, and Zn) as chlorides at nearly 100% efficiency while also effectively converting trivalent arsenic (As(III)) into pentavalent arsenic (As(V)) and immobilizing it in the roasting residues, thereby reducing environmental risk. Through the utilization of thermogravimetric mass spectrum analysis and thermodynamic equilibrium calculations, the chlorination process for heavy metals was investigated, revealing both direct and indirect chlorination processes. Additionally, the study resulted in the development of a CuO-based multiple-metals electrocatalyst from the oxidized roasting-recovered heavy metal chlorides, exhibiting significantly enhanced catalytic activity and faradaic efficiency for the electroreduction of CO2 into CO and CH4 compared to pure CuO electrocatalyst under similar electrocatalytic conditions. Overall, this work presents a sustainable and scalable method and new insights for addressing environmental risks while repurposing copper smelter dust.

Interface coupling of octahedron Cu2O with reduced graphene oxide for enhanced photocatalytic and photoelectrochemical activity

Graphene oxide (GO) has been recognized as an ideal substrate material of semiconductor photocatalysts to achieve superior properties. Herein, Cu2O/reduced graphene oxide hetero-structures (Cu2O/rGO), featured by octahedron Cu2O with highly exposed {111} facets in-situ anchored on the framework of rGO nanosheets, were constructed via a green wet chemistry route at room temperature. During the reactions, Cu2+ ions that were adsorbed on GO could act as the nucleation sites of Cu2O while GO was further converted into rGO under the reduction of glucose, forming a robust hetero-interface of C–O–Cu bonding. Owning to the improved photon capture ability and carrier separation efficiency, the optimized Cu2O/rGO exhibits about 3.5 and 9.3 times enhancement of photocurrent intensity and photocatalytic activity, respectively, as compared to those of pure Cu2O. Meanwhile, the correlation among rGO content, structure and photocatalytic activity of Cu2O/rGO was demonstrated. This work presents a rational route and deep insight for the interface coupling within metal oxide/carbon material hetero-structures for advanced catalytic applications.

Phase engineered enhancement of photocatalytic and Opto-magnetic properties of CuO nanoparticles through fluorine and gadolinium doping

The present study comprises co-doping of CuO nanoparticles with gadolinium (Gd) and fluorine (F) using the sol-gel method to achieve phase stabilization and tune their physicochemical properties. X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS) analyses revealed successful incorporation of the dopants and the stabilization of the CuO phase with increasing Gd content. Morphological studies revealed grain refinement and an enhanced surface-to-volume ratio upon co-doping. Average particle size decreased from 194 nm to 138 nm for pure and 5%F to 126 nm, 101 nm, and 81 nm for, 1mol%, 2mol% and 3mol% Gd along with 5mol% F co-doped CuO nanoparticles. Increasing the Gd ratio also tuned the band structure and significantly improved the optical properties of the CuO nanoparticles. Additionally, a transition from weak ferromagnetic ordering to paramagnetic behavior is observed. Coercivity decreased to 2.5 Oe for Cu0.97Gd0.03F0.05O0.95 as opposed to 396.3 Oe for CuF0.05O0.95. Photocatalytic activity studies using rhodamine B (Rh B) as a model probe revealed a pronounced enhancement in degradation kinetics with increasing gadolinium (Gd) doping, culminating in around 2.9 times faster degradation rate for 3 % Gd-doped CuO nanoparticles compared to pure CuO nanoparticles. After 3 h of UV light irradiation, the photodegradation efficiency of Cu0.97Gd0.03F0.05O0.95 was 94 %, which is significantly higher than the 80 % and 69 % efficiency of CuF0.05O0.95 and CuO, respectively. These remarkable optical, magnetic, and photocatalytic properties of the co-doped nanoparticles offer promising candidacy for various applications, including photocatalysis, solar energy harvesting, magnetic switching, and magnetic sensing.