As-synthesized Ag Research Articles

Green synthesis of Oscimum Sanctum mediated silver nanoparticles to fabricate sensors for hydrogen peroxide detection

In this study, silver nanoparticles (Ag NPs) of an average size of ∼15 nm have been produced using the green synthesis technique with Oscimum Sanctum leaf extract. Further, these nanoparticles have been used to prepare electrodes for electrochemical sensors to monitor hydrogen peroxide. Hydrogen peroxide sensors have many applications in different sectors, such as medical, agriculture, and industry. The optical and structural characteristics of the Ag NPs have been investigated by UV–visible absorption spectroscopy and XRD patterns. Particle size, shape, and morphology of as-synthesized Ag NPs have been analyzed using transmission and scanning electron microscopic techniques. These nanoparticles were deposited onto an indium-tin-oxide glass substrate using the electrophoretic technique, which was used as an electrode to assess the electro-oxidation of Ag NPs by cyclic voltammetry. The sensitivity of the sensor has been estimated to be 4.16 µA/mM-cm2. The limit of detection of the sensor is estimated to be 40 µM within the linear range of 5–28 mM. The lattice parameter, interplanar spacing, and crystallite size of Ag NPs have been quantified and estimated against pH variation.

Mentha spicata assisted Ag–CuO nanocomposite enables anti-diabetic and vitamin-C sensing activities

Diabetes mellitus (DM), a multifactorial chronic health condition, affects a sizable portion of the global population, and more people are expected to contract it in the future, according to the World Health Organisation (WHO). Diabetes mellitus can be treated with conventional drugs, but most of the medications have a variety of side effects. The use of nanocomposites (NCs) to treat diabetes has been prioritized in this scenario. In this study, Ag–CuO NCs were synthesized using a green method using Mentha spicata leaf extract and their physicochemical properties were investigated with a variety of analytical techniques. According to an extensive in vivo and in vitro analysis of the biological activities of as-synthesized Ag–CuO NCs, Ag–CuO NCs possess effective antibacterial, anti-diabetic, and anti-hyperlipidemic characteristics. When Ag–CuO NCs are administered to STZ-induced animals in a concentration-based manner, the blood levels of inflammatory and liver marker enzymes are reduced and antioxidant enzyme levels are increased. Besides, Ag–CuO NCs exhibit excellent sensing activity with a limit of detection of 86 nM against Vitamin-C. This study reveals that Ag–CuO NCs derived from Mentha spicata may, therefore, prove to be a very successful anti-diabetic and biosensor candidate in the future.

Synthesis of graphene-based nanocomposites with superior doxycycline removal efficiency and antimicrobial studies

Herein, we report the successful preparation of high-quality graphene (G) nanosheets up to the kg scale using an electrochemical technique using graphite rods from scrap dry cell batteries. The as-prepared graphene was then decorated in-stiu with niobium oxide (Nb2O5) and silver (Ag) nanoparticles to prepare Nb2O5@G and Ag@G nanocomposites. Powdered X-ray diffraction (p-XRD), Fourier-transform (FT-IR) infrared spectroscopy, UV–visible (UV–vis) spectroscopy, Raman spectroscopy, and scanning electron microscopy (SEM) were used to characterize the as-prepared nanocomposite material. This binary Nb2O5@G nanocomposite was subsequently used to degrade doxycycline antibiotic with an efficiency of 98.5 % in 120 min under visible light conditions. To determine the optimal scope of the as-prepared composite catalyst, degradation studies were performed at different pH values, photocatalyst doses and temperatures. Kinetics studies revealed that the processes followed pseudo-first-order kinetics. In addition, the as-synthesized graphene, Nb2O5@G and Ag@G nanocomposites were used for selective application against E. coli bacterial strains. Overall, Ag@G has shown good potential application prospects in the development of antibacterial materials in comparison with Nb2O5@G and pristine graphene. This study highlights the potential of as-prepared graphene-based nanocomposites for use in waste treatment and environmental bioremediation.

Creating 3D Nanoparticle Structural Space via Data Augmentation to Bidirectionally Predict Nanoparticle Mixture's Purity, Size, and Shape from Extinction Spectra.

Nanoparticle (NP) characterization is essential because diverse shapes, sizes, and morphologies inevitably occur in as-synthesized NP mixtures, profoundly impacting their properties and applications. Currently, the only technique to concurrently determine these structural parameters is electron microscopy, but it is time-intensive and tedious. Here, we create a three-dimensional (3D) NP structural space to concurrently determine the purity, size, and shape of 1000 sets of as-synthesized Ag nanocubes mixtures containing interfering nanospheres and nanowires from their extinction spectra, attaining low predictive errors at 2.7-7.9 %. We first use plasmonically-driven feature enrichment to extract localized surface plasmon resonance attributes from spectra and establish a lasso regressor (LR) model to predict purity, size, and shape. Leveraging the learned LR, we artificially generate 425,592 augmented extinction spectra to overcome data scarcity and create a comprehensive NP structural space to bidirectionally predict extinction spectra from structural parameters with <4 % error. Our interpretable NP structural space further elucidates the two higher-order combined electric dipole, quadrupole, and magnetic dipole as the critical structural parameter predictors. By incorporating other NP shapes and mixtures' extinction spectra, we anticipate our approach, especially the data augmentation, can create a fully generalizable NP structural space to drive on-demand, autonomous synthesis-characterization platforms.

Critical evaluation of silver nanoparticles synthesized at room temperature/microwave irradiation: A green approach

Biological routes of nanoparticle synthesis, especially the use of plant-based extracts, have shown great potential for the production of silver nanoparticles (Ag NPs). Ag NPs synthesized in this way is a simple one-step method that is economical and environmentally friendly. With the increasing need to develop new and effective antibacterial agents, a novel and stable Ag NPs is synthesized using aqueous seed extract of Strychnos potatorum (SP). Ag NPs obtained at room temperature (S1) and under optimal microwave irradiation (S2) were compared in the present work. The as-synthesized Ag NPs are characterized by Ultraviolet-Visible (UV-Vis) spectroscopy, X-Ray Diffraction (XRD), Fourier Transform Infrared (FT-IR) spectroscopy, Field Emission Scanning Electron Microscopy (FESEM) and Transmission Electron Microscopy (TEM). UV-Vis spectra showed Surface Plasmon Resonance (SPR) peaks at 430nm (S1) and 438nm (S2) associated with the formation of Ag NPs. XRD patterns indicate the crystallinity of Ag NPs, with an average crystallite size of approximately 23nm (S1) and 15nm (S2). FT-IR study revealed potential biomolecules to form Ag NPs. FESEM and TEM analysis revealed the spherical shape of Ag NPs. An average particle size of approximately 31nm (S1) and 19nm (S2) was revealed from TEM analysis. To the best of our understanding, this study is novel as Ag NPs synthesized from SP using a microwave oven are described in detail for the first time. The study also demonstrated the potential of Ag NPs for antibacterial effect against Gram-positive bacteria (Streptococcus pneumoniae, Staphylococcus aureus) and Gram-negative bacteria (Klebsiella pneumoniae, Vibrio vulnificus). Our findings show that at a specific concentration, small NPs are more efficient in inhibiting bacterial activity. This research indicates that Ag NPs synthesized from SP exhibit strong antibacterial activity for the treatment of bacterial infection.

Green synthesis and structural and cytotoxic properties of a new silver(I) complex: Solid-state, single-source precursor of Ag and Ag2O NPs

A new silver complex, [Ag(2-pymc)(NO3)] (Ag-1) [2-pymc = methyl-2-(pyridine-2yl-methylene) hydrazinecarboxylate], was prepared and subjected to elemental analysis including Fourier transform infrared (FT-IR) and ultraviolet–visible (UV–vis) spectroscopic methods. Single-crystal X-ray diffraction (SC-XRD) study demonstrated [Ag(2-pymc)(NO3)] monomers in the crystal structure. The silver ion is triple coordinated by an N, N-chelating 2-pymc and one oxygen atom of a monodendate nitrate anion. Interestingly, Ag-1 acted as a single-source, solid-state molecular precursor (SSMP) for synthesizing both Ag and Ag2O nanoparticles (NPs) at different reaction conditions. The crystallinity and purity of the as-synthesized Ag and Ag2O NPs were investigated by powder XRD, whereas the size and surface morphology were determined by TEM analysis. The results showed that the formed Ag NPs were well dispersed and spherically shaped with an average diameter of 30–32 nm. The Ag2O NPs were not homogeneous but showed irregular shapes with an average diameter of 40–42 nm. Ag-1 showed antibacterial activity against selected Gram-positive (Bacillus megaterium) and Gram-negative (Pseudomonas Stutzeri) bacteria. The cytotoxicity of Ag-1 against MCF-7 cancer cells was also tested.

Designed bifunctional flower-like structural molybdenum disulfide doped with Ag atoms for clean energy and contaminant detection

An efficient bifunctional material still remains a stupendous challenge for the use of Surface-enhanced Raman scattering (SERS) substrate and hydrogen evolution reaction (HER) electrocatalysts and suffer from cost issues. In this study, heteroatom Ag doping instead of Ag compound MoS2 has been used to activate the inert plane of MoS2 and improve charge transfer, modulating the SERS and HER properties of MoS2. As SERS substrate, Ag doped MoS2 can be widely used for the rapid detection of organic dyes (MG, CV, R6G), pesticides (endosulfan and dipterex), and endocrine disrupter Bisphenol A and biological macromolecules bilirubin. Meanwhile, the HER activity of the MoS2 is remarkably boosted by introducing Ag atoms. The low overpotentials of pure MoS2 is 524 mV, while the low overpotentials of the Ag doped MoS2 can be reach 54 mV in alkaline electrolytes. Tafel slope, electrochemically active surface area (ECSA), Turnover frequency (TOF) and the normalized ECSA were analyzed to reveal the real reason for the increasing in electrocatalytic activity. As-synthesized Ag doped MoS2 shows highly efficient hydrogen evolution. This work synthesized low-cost bifunctional materials Ag doped MoS2 not only provides a guidance for MoS2-base SERS substrate design but also facilitates cope with the growing demand for clean energy.

Silver-based SERS substrates fabricated using a 3D printed microfluidic device.

The detection of harmful chemicals in the environment and for food safety is a crucial requirement. While traditional techniques such as GC-MS and HPLC provide high sensitivity, they are expensive, time-consuming, and require skilled labor. Surface-enhanced Raman spectroscopy (SERS) is a powerful analytical tool for detecting ultralow concentrations of chemical compounds and biomolecules. We present a reproducible method for producing Ag nanoparticles that can be used to create highly sensitive SERS substrates. A microfluidic device was employed to confine the precursor reagents within the droplets, resulting in Ag nanoparticles of uniform shape and size. The study investigates the effects of various synthesis conditions on the size distribution, dispersity, and localized surface plasmon resonance wavelength of the Ag nanoparticles. To create the SERS substrate, the as-synthesized Ag nanoparticles were assembled into a monolayer on a liquid/air interface and deposited onto a porous silicon array prepared through a metal-assisted chemical etching approach. By using the developed microfluidic device, enhancement factors of the Raman signal for rhodamine B (at 10-9 M) and melamine (at 10-7 M) of 8.59 × 106 and 8.21 × 103, respectively, were obtained. The detection limits for rhodamine B and melamine were estimated to be 1.94 × 10-10 M and 2.8 × 10-8 M with relative standard deviation values of 3.4% and 4.6%, respectively. The developed SERS substrate exhibits exceptional analytical performance and has the potential to be a valuable analytical tool for monitoring environmental contaminants.

Synthesis of Silver Nanowires with Different Morphologies for Lung Cancer Treatment

In this publication, three silver nanowires (Ag NWs) with different morphologies were prepared via the polyol process synthesis method by changing the amount and kinds of inorganic agents in the synthesis procedure. The as-synthesized Ag NWs showed high yield and purity. The samples were fully characterized by scanning electron microscopy (SEM) and powder X-ray diffraction (PXRD). The SEM results revealed that Ag NWs 1–3 have diameters of 95, 70, and 55–65 nm, respectively, and lengths of 20–30, 30–40, and 40–50 μm, respectively. The PXRD experiments showed that the as-synthesized samples display four typical diffraction peaks at 38.2°, 44.5°, 64.5°, and 77.4°, which are consistent with the face-centered cubic lattice for Ag. The inhibitory activities of the Ag NWs on the viability of lung cancer cells was measured with cell counting kit-8 assay. The activation activity of the vascular endothelial growth factor signaling pathway in the cancer cells was measured with real-time polymerase chain reaction.

Enhancement of Fluorescence Mediated by Silver Nanoparticles: Implications for Cell Imaging.

In this study, we report the surface enhanced fluorescence (SEF) of a biologically important organic dye, fluorescein (FL), by silver nanoparticles (Ag NPs) in an aqueous medium and its implications for human cell imaging. The as-synthesized Ag NPs were characterized by dynamic light scattering (DLS), zeta potential, transmission electron microscopy (TEM), and UV-vis absorption spectroscopic studies. The interaction and aggregation of FL dye with Ag NPs and a cationic surfactant, namely, cetyltrimethylammonium bromide (CTAB), were explored by UV-vis absorption and steady-state and time-resolved fluorescence spectroscopic methods. The distance-dependent fluorescence enhancement of FL due to Ag NPs in the solution was also theoretically correlated by three-dimensional finite-difference time-domain (3D-FDTD) simulation. The plasmonic coupling between neighboring NPs facilitated the augmentation of the local electric field, thereby producing various "hotspots" that influence the overall fluorescence of the emitter. J-type aggregates of FL in the presence of the CTAB micelles and Ag NP mixed solution were confirmed by electronic spectroscopy. The density functional theoretical (DFT) study revealed the electronic energy levels associated with different forms of FL dye in the aqueous solution. Most interestingly, the Ag NP/FL mixed system used in fluorescence imaging of human lung fibroblast cells (WI 38 cell line) showed a significantly stronger green fluorescence signal compared to that of FL after an incubation period of only 3 h. This study confirms that the Ag NP mediated SEF phenomenon of the FL dye is also manifested in the intracellular medium of human cells giving a brighter and more intense fluorescence image. The cell viability test after exposure to the Ag NP/FL mixed system was confirmed by the MTT assay method. The proposed study may have an implication as an alternate approach for human cell imaging with higher resolution and more contrast.

Au nanozyme driven cascading catalysis in Tollens' reaction: An insight of glucose oxidase-like mechanism.

Au nanoparticles (NPs) have been proven to be excellent glucose oxidase (GOx) mimics, which can catalyze the electrons transform pathway from glucose to oxygen. This study confirmed AuNPs can accelerate the reaction between [Ag(NH3)2]+and glucose under alkaline conditions, which is also known as the Tollens'reaction, and the possible mechanism was proposed. Here, [Ag(NH3)2]+ instead of O2 acted directedly as an electron acceptor during glucose oxidation catalyzed by AuNPs, accompanied by hydrogen transfer. The as-synthesized Ag nanoparticles can also catalyze this process, similar to AuNPs, via a unique cascading catalysis mechanism in the Tollens' reaction. A simple and heatless glucose colorimetric assay can be established based on the plasmonic band of AgNPs with a liner range of 0.6-22.2 μM, and the limit of detection is 0.32 μM.

The size-and shape-controlled synthesis of silver nanoparticles by solvothermal method

In this work, Ag nanoparticles (NPs) were fabricated by thermal decomposition of silver nitrate in organic solvents in the presence of sodium oleate (SOA) and 1-octadecanol (OCD-ol). The effects of different solvents and concentrations of OCD-ol on the morphology and properties of the Ag nanomaterials were investigated in detail. The structural analysis of the Ag nanomaterials showed good crystallinity. The TEM images of the samples showed that with the change in the fabrication conditions, different sizes and shapes of Ag nanomaterials were formed. The surface plasmon resonance (SPR) properties of the Ag NPs were influenced by their size and shape. The as-synthesized Ag NPs have potential applications in biomedical, catalysis, or electronics.

Ag nanoparticles decorated on rGO sheets: Green synthesis and effective photocatalytic action

In the current study, silver (Ag) nanoparticles and rGO/Ag nanocomposite were prepared by a facile and green approach based on hydrothermal method. The as-synthesized pure Ag nanoparticles and rGO/Ag nanocomposite were characterized using different techniques such as XRD, SEM, TEM, EDX, XPS, UV–Vis and PL spectrocopy. TEM results showed that Ag NPs were typically spherical (size∼15 nm) and almost uniformly attached onto rGO sheets.The appearance of Ag NPs in the rGO/Ag nanocomposite was confirmed by EDX spectra.The reduction in band gap of Ag NPs could be happened through its anchoring over rGO sheets as examined by UV–visible and photolumenesence spectroscopy. Dye degradation performance of pure Ag nanoparticles and rGO/Ag nanocomposite towards methylene blue (MB) was tested by UV–visible spectra, revealing that rGO/Ag nanocomposite has higher photo-induced catalytic activity than that of pure Ag nanoparticles.The superior electrochemical performance of as-prepared rGO/Ag nanocomposite proved it as a potential candidate for electrochemical energy storage applications.

Design and synthesis of Ag NPs/chitosan-starch nano-biocomposite as a modern anti-human malignant melanoma drug

In recent years, the unprecedented increase in various cancers such as melanoma has caused researchers to focus more on the formulation of newer drugs with less side effects. In this study, we herein indicate the biogenic nanoarchitechtonics of Ag NPs template over chitosan/starch mixed hydrogel having notable reducing potential and anti-malignant melanoma effects. The two biopolymers also could stabilize as-synthesized Ag NPs. Physicochemical features of the material were further characterized over a range of advanced methods like X-ray diffraction (XRD), elemental mapping, dynamic light scattering (DLS), energy-dispersive X-ray spectroscopy (EDS), transmission electron microscopy (TEM), field emission scanning electron microscopy (FESEM), and Fourier transformed infrared spectroscopy (FT-IR). TEM analysis showed the spherical-shaped nanocomposite with the mean diameter in the range of 5–15 nm. Thereafter, the nanocomposite was exploited in the anti-malignant melanoma and cytotoxicity effects studies against various human malignant melanoma cell lines (HT144, RPMI7951, SKMEL2, UACC3074, WM266-4 and MUM2C) in situ. The bio-composite corresponding IC50 values were 193, 102, 227, 250, 301, and 203 μg/mL against MUM2C, WM266-4, UACC3074, SKMEL2, RPMI7951, and HT144 cell lines, respectively. A significantly high IC50 value offered an excellent antioxidant capacity of bio-composite. According to the above results, Ag NPs/CS-Starch nanomaterial can be utilized as an efficient drug to treat malignant melanoma in humans after doing clinical trial studies.

Toward Plasmon-Controlled Generation of the Activating Ag Hotspot Nanospheres for Quantitative SERS Analysis

Introduction: Surface-enhanced Raman scattering (SERS) has attracted enormous concern as a robust vibrational spectroscopy technique with widespread applications, primarily for the ultrasensitive detection of low-concentration molecules and selective identification. Nevertheless, the optimization of SERS efficiency has been impeded by limitations in controlling the size of nanoparticles utilized in this technique. Method: In this study, the morphology, structure, chemical components, and optical properties of the as-synthesized Ag nanoparticles (Ag NPs) via a hydrothermal method were thoroughly investigated by sophisticated analyses. The synthesized Ag NPs were characterized for its morphological characteristics using scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDX), transmission electron microscopy (TEM), X-ray diffraction (XRD), UV-Vis absorption spectroscopy, Raman spectroscopy, and assessed for their SERS performance in detecting organic substances including Crystal Violet (CV) and Rhodamine B (RhB). Results: The results showed that Ag NPs with different sizes could be obtained from 10 to 30 nm. These sizes corresponded to the duration of the hydrothermal method, which was 15, 20, and 25 hours, respectively. The optimal sample exhibited the capability to detect dye molecule solutions at diluted-low concentrations as low as 10-8 M. Conclusion: Through these results, we contribute to advancing the understanding of tailored nanoparticle synthesis for superior SERS performance, thus opening avenues for enhanced molecular detection in various applied analytical fields.

Highly Conductive and Compliant Silver Nanowire Nanocomposites by Direct Spray Deposition

The silver nanowire (Ag NW)/elastomer nanocomposite represents a prototypical form of a compliant conductor for flexible and stretchable electronic devices. The widespread implementations are currently hindered by the complicated procedures to effectively disperse Ag NWs into elastomer matrices. In this study, we report a facile and scalable coating process to create Ag NW nanocomposites on various flexible/stretchable substrates. As-synthesized Ag NWs from the high-yield polyol-reduction approach are homogeneously dispersed into a variety of dilute elastomer solutions, thereby enabling direct spray deposition into highly compliant conductors. The as-prepared nanocomposite exhibits excellent conductivity (∼11,000 S/cm) and high deformability to 100% strain. The stable electrical properties are largely retained under repetitive mechanical manipulations including stretching, bending, and folding. The patterned features of conductive nanocomposites are conveniently accessed using shadow masks or selective laser ablation. The practical suitability is demonstrated by the successful implementations of a stretchable sensing patch and a flexible light-emitting diode display.

Clinical application study of silver nanowires combined with a synergistic leukocyte filter in cardioplegia after anesthesia

In this report, silver nanowire (Ag NW) samples of different sizes have been successfully synthesized by using the new polyol synthesis method. A new type of polyol process that regulated the size of the Ag NWs was developed by varying the types of control agents. Three as-synthesized Ag NW 1–3 samples have been produced under 140 °C utilizing NaCl, CuCl2 and FeCl3 as control agents, providing us with novel synthesized methods in designing and synthesizing Ag NWs of diverse sizes. Three as-synthesized Ag NW 1–3 samples have been systemically characterized through scanning electron microscopy and powder X-ray diffraction. The application values of the samples on cardioplegia after anesthesia combined with a synergistic leukocyte filter were analyzed, and the associated mechanism was studied. The superoxide dismutase activation in cardiomyocytes was investigated employing real time RT-PCR. The serum lactate dehydrogenase and serum malondialdehyde levels were then determined using ELISA.

Silver Nanowires (Ag NWs) Enhance the Biological Activity of Paclitaxel Against Ovarian Cancer

In this paper, three kinds of silver nanowires (Ag NWs) with various specifications were acquired from one-pot polyol synthesis method. The sizes of the as-synthesized Ag NWs 1–3 can be controlled and high purity and yield can be obtained by changing the crystallization time and reaction temperature, providing a new synthesis approach for designing and synthesizing Ag NWs with the required morphology and size. Furthermore, the obtained samples of Ag NWs were characterized by scannine electron microscopy and X-ray diffractometry. The enhancement of Ag NWs 1–3 on paclitaxel against ovarian cancer was examined, and the associated mechanism was also investigated.

Nettle-root extract mediated green synthesis of silver nanoparticles: Characterization and evaluation of its gastric carcinoma properties

This work describes an extremely simplified synthesis of Ag NPs using antioxidant-rich Nettle-root extract as a local natural source. The innate oxygenated phytochemicals facilitated the green reduction of Ag+ ions to corresponding Ag0 NPs and stabilized them by encapsulating them. This modification prevented the as-synthesized Ag NPs towards agglomeration and prepared in uniformly spherical in shape and in the range of 10–20 nm dimension. Physicochemical characteristics of the green synthesized Ag NPs were evaluated by advanced physicochemical techniques like UV–vis and FT-IR spectroscopy, SEM, TEM, EDX and elemental mapping study. Thein vitrocytotoxic and anti-gastric carcinoma effects of biologically synthesized Ag NPs against GC1415, AGS, GC1401, and GC1436 cancer cell lines were assessed. The anticancer properties of the Ag NPs could significantly remove cancer cell lines in a time and concentration-dependent manner by MTT assay. The IC50 of the Ag NPs were 183, 154, 250, and 276 µg/mL against GC1415, AGS, GC1401, and GC1436 cancer cell lines. The antioxidant activity of Ag NPs was determined by DPPH method. The Ag NPs showed the high antioxidant activity according to the IC50 value.

Designing 1D Plasmonic Ag/CuWO4 Nanocomposite for Enhancing Visible-Light Photoelectrochemical Performance

We report the synthesis and characterization of CuWO4, its functionalization with plasmonic Ag nanostructures and its photoelectrochemical properties. First, a solution-phase polyvinylpyrrolidone (PVP)-assisted approach was used to prepare shape-controlled plasmonic Ag (nanoparticles (NPs) and nanowires (NWs)) via heterogeneous nucleation. The growth process and morphological tuning of the as-synthesized Ag nanostructures were investigated experimentally. Molecular dynamics (MD) simulations were used to understand the underlying principles that govern nanowire growth by analyzing the interaction energies between crystal surfaces and PVP as well as the atom density profile. Significant enhancements of the photocurrent (45% and 140%, respectively) at the thermodynamic potential for oxygen evolution (0.62 V vs Ag/AgCl) were obtained for Ag NP/CuWO4 (0.11 mA cm−2) and Ag NW/CuWO4 (0.18 mA cm−2) photoanodes, respectively, compared to pristine CuWO4 photoanode. Moreover, the incorporation of Ag NWs significantly enhances the incident photon to current conversion efficiency (IPCE) across the 350–550 nm spectral range, revealing a maximum around 10%. The obtained improvement is attributed to improved light harvesting by Ag-induced surface plasmon resonance (SPR) effects with a dual peak absorption, together with more effective charge carrier transfer/separation. Therefore, incorporation of the as-prepared plasmonic nanostructures with CuWO4 causes a considerable improvement of the photoelectrochemical activity for energy conversion/storage applications.