Metallic Nanoparticles - Science topic

The emergence of multidrug-resistant pathogens poses a severe global health challenge, threatening the efficacy of conventional antibiotics and demanding innovative strategies to combat infectious diseases. Nanotechnology offers promising avenues for developing novel antimicrobial agents that overcome resistance mechanisms, enhance drug delivery, a...

In order to foster a more sustainable approach to nanotechnology, there is a rising interest in investigating the potential of fruit and vegetable waste as a resource for the synthesis of nanoparticles. This technique places an emphasis on the ecologically friendly creation of nanoparticles, providing an option that is both cost-effective and favor...

Exosomes, as natural intercellular messengers, are gaining prominence as delivery vehicles in nanomedicine, offering a superior alternative to conventional synthetic nanoparticles for cancer therapeutics. Unlike lipid, polymer, or metallic nanoparticles, which often face challenges related to immunogenicity, targeting precision, and off-tumor toxic...

Increased usage of nanotechnological applications inevitably leads to exposure of hosts and their associated microbiomes to metallic nanoparticles. Various bacteria within the microbiome harbour mechanisms to protect themselves against metal-related toxicity. These mechanisms have broadly been described in the absence of a host. Here, we studied ho...

The biosynthesis of metal nanoparticles using natural extracts represents a significant advancement in quantitative analysis, as it effectively reduces nanoparticle aggregation, thereby enhancing the precision and dependability of analytical results. However, particle agglomeration of the nanoparticles continues to be a notable hurdle. In this stud...

Introduction The occurrence of metallosis after spine surgery is a rare phenomenon. The accumulation and deposition of metallic nanoparticles, especially cobalt and chromium, elicit a local inflammatory response by modulating the expression of cytokines, ultimately manifesting as a pseudotumor. This process is considered an aseptic lymphocyte-domin...

Osteoporosis is characterized by a reduction in bone mineral density, compromised bone microarchitecture and mineralization, and diminished bone strength, which collectively elevates the likelihood of fractures. Various therapeutic approaches exist for managing osteoporosis, including the use of metallic nanoparticles. The present study explored th...

Cancer remains a leading global cause of mortality, highlighting the critical need for effective early diagnosis. Despite advancements in treatment, early detection and imaging continue to pose significant challenges. Functionalized carbon nanotubes (CNTs) have emerged as promising nanomaterials due to their unique structural properties and versati...

The plant-mediated synthesis of metallic nanoparticles is experiencing growing commercial demand due to its extensive applicability across diverse fields, including electronics, catalysis, chemistry, energy, cosmetics, and medicine. In the current investigation, the aqueous extract of bitter apple seeds (BAE) was prepared, characterized, and its an...

Perovskite, as a promising class of photodetection material, demonstrates considerable potential in replacing conventional bulk light-detection materials such as silicon, III–V, or II–VI compound semiconductors and has been widely applied in various special light detection. Relying solely on the intrinsic photoelectric properties of perovskite grad...

The goal of this study was to synthesize the bimetallic nanoparticles using leaf extract of Trifolium alexandrinum, copper sulphate and zinc sulphate and screening their biological and photocatalytic activities. Since growing antibiotic resistance is a significant problem, metallic nanoparticles, which are well-known for their wide biological spect...

Gracilaria salicornia was used to synthesize nanoparticles from its aqueous extract, and Padina gymnospora was a source of sodium alginate (SA)-based hydrogel. The synthesized nanoparticles with sodium alginate, a nanocomposite (NC) thin film, termed GsAu/CeO₂/TiO₂NC, was successfully fabricated. The integration of SA with NC was investigated and c...

Osteosarcoma (OS), chondrosarcoma (CHS), and Ewing sarcoma (EWS) are the main types of bone cancer (BC). OS is the most common BC in this group. It is most common in children and older people, especially in their long bones. Treatments for bone sarcomas and tumors have slowly improved, so researchers began looking into additional and alternative ap...

Pulsed laser irradiation with an appropriate laser fluence (50–200 mJ pulse⁻¹ cm⁻²) onto photo‐absorptive ceramic or metallic nanoparticles dispersed in liquid can induce a rapid rise in the local temperature to 1000–3000 K of the particles, instantaneous generation of melt droplets, and formation of spherical particles of high‐temperature material...

Increasing environmental pollution crisis due to toxic pollutants such as heavy metals, synthetic dyes, and hazardous waste necessitates the urgent establishment of environmentally benign and sustainable remediation technologies. This review summarizes recent advances in the biosynthesis of metallic nanoparticles (BMNPs) application of green pathwa...

Localized surface plasmon response (LSPR) excited in coated bimetallic alloy constructed from equiatomic Ag and Au is theoretically investigated in terms of core size (r), shell thickness (t), and dielectric properties of the surrounding medium. In agreement with a previously published report, it has been found that the sensing competence of the Ag...

Nanotherapeutics has transformed cancer treatment by providing drug molecules at the sites of action with reduced systemic toxicity and maximum therapeutic efficacy. This review gives an overview of recent advancements in nanomedicine such as liposomes, polymeric nanoparticles, dendrimers, and metallic nanoparticles that provide targeted tumor targ...

In this paper, we investigate the hybridization theory of plasmon resonance in metallic nanostructures, which has been validated by the authors in [31] through a series of experiments. In an electrostatic field, we establish a mathematical framework for the Neumann-Poincar\'{e}(NP) type operators for metallic nanoparticles with general geometries r...

The overstimulation of the mechanistic target of the rapamycin (mTOR) signaling pathway is important for regulating cellular growth and proliferation and is frequently seen in different types of cancer. Recently, metallic nanoparticles have been used to treat many cancers. This study describes a straightforward, eco‐friendly chemical investigation...

In the nanoparticle-on-a-slit (NPoS) cavity, a variation of the nanoparticle-on-a-mirror geometry, a metallic nanoparticle is placed on a functionalized narrow slit created on a metal plate so that two nanometric-scale gaps enable extreme plasmonic localization. For many applications, it is desirable to integrate such cavities on a chip and provide...

A regeneração óssea e periodontal constitui um desafio clínico significativo, especialmente em casos de perdas extensas ou lesões complexas. Nos últimos anos, a combinação de nanomateriais e terapias celulares tem emergido como uma abordagem promissora, proporcionando novas alternativas terapêuticas para essas condições. Este estudo tem como objeti...

Background: Nanomaterial-based biosensors represent a transformative advancement in oral health diagnostics and therapeutics, offering superior sensitivity and selectivity for early disease detection compared to conventional methods. Their applications span prosthetic dentistry, where they enable the precise monitoring of dental implants, and thera...

The ocean is an extraordinary natural source of a wide range of bioactive compounds. These compounds, including proteins, phenolics, polysaccharides, pigments, vitamins, and fatty acids, possess unique biological properties that are increasingly being explored in the field of nanotechnology across diverse sectors. Among marine-derived nanoparticles...

Polydopamine (PDA) is an emerging biomimetic material that stimulates the distinctive physicochemical properties of the blue mussel byssus. In this study, we report a rapid and facile method for the decoration of gold nanoparticles (AuNPs) onto the mussel-inspired polydopamine nanospheres (PDA NSs) via cold atmospheric plasma treatment. After 10 mi...

Graphene-oxide (GO) based composites exhibit promising energy storage properties like adaptable porosity, chemical stability, excellent conductivity, and exceptional ability to charge storage processes. However, the inherent rigid structure of GO limits its use for modern flexible and disposable energy storage devices. This study presents the fabri...

Biogenic fabrication of metallic nanoparticles is an emerging discipline for the production of nanoproducts that exert potent antioxidant and antibacterial activity, and do not suffer from the limitations inherent in physicochemical synthesis methods. A sustainable and environmentally beneficial method is the synthesis of green nanoparticles using...

Water pollution by persistent dyes and bacteria has become one of the major environmental concerns. One of the most widely used strategies is the use of supported metal nanoparticles (MNPs) to remove a wide variety of dyes. This work concerns the dispersion of MNPs (M = Ag, Zn, and Cu) on kaolin clay using ultrasonic irradiation. The resulting soli...

The inadequate cooling capacity of the customary fluids forced the scientists to look for some alternatives that could fulfill the industry requirements. The inception of nanofluids has revolutionized the modern industry-oriented finished products. Nanofluids are the amalgamation of metallic nanoparticles and the usual fluids that possess a high he...

Alzheimer's disease (AD) is a chronic neurodegenerative disorder characterized by loss of memory and cognitive impairment. The pathogenesis of AD is complex and involves a variety of processes, including receptor-ligand interaction and receptor-mediated endocytosis. Biofunctionalized metallic nanoparticles (MNPs) represent a cutting-edge technique...

Green synthesis, one of the methods of obtaining metallic nanoparticles using plants, is preferred because it is simpler, eco-friendly, and economical and has the ability to reduce metallic ions using phytochemicals in its structure. This study investigates the green synthesis of CuO nanoparticles using turmeric ( Curcuma longa L. ) extract, the st...

A novel spray‐on elemental barcode technology is reported for the secure, permanent, and tamper‐proof identification of polymeric and fiber‐reinforced composite materials. This system utilizes the in situ reduction of metal salts to nanoparticles embedded within a polymer matrix, creating a unique barcode that is detectable through X‐ray fluorescen...

The current high mortality rate associated with infectious diseases is an alarming issue worldwide. The emergence of multidrug-resistant bacterial strains has led to the development of new ailments and the resurgence of old pathogenic infections. To address this issue, metal and metal oxide nanoparticles have emerged as potent nanoantimicrobial age...

Recientemente, el interés por las nanopartículas metálicas (MNPs) se ha incrementado significativamente, debido a las propiedades especiales y aplicaciones potenciales que presentan en áreas diversas. Las nanopartículas de cobre (CuNPs) en particular, han atraído considerablemente la atención debido a sus propiedades conductoras, catalíticas, óptic...

The fabrication of miniaturized and durable pH electrodes is a key requirement for developing advanced analytical devices for both industrial and biomedical applications. Glass electrodes are not an option in these cases. Electrodes based on metal oxides have been the most studied for pH sensing in these and other applications. Stainless steel pH e...

Green synthesis provides a sustainable approach to producing metallic nanoparticles (MNPs) using biological entities such as plants, algae, bacteria, yeast, and fungi. While extensive research has explored these biosynthetic processes, an integrated review is needed to systematically consolidate knowledge on biosynthesis mechanisms, key synthesis p...

Nanoplasmonic structures have emerged as a promising approach to address light trapping limitations in thin-film optoelectronic devices. This study investigates the integration of metallic nanoparticle arrays onto nanocrystalline silicon (nc-Si:H) thin films to enhance optical absorption through plasmonic effects. Using finite-difference time-domai...

Innovations in technology are crucial to the survival of modern society. As a result, the output of electronic garbages (E-wastes), which contain recyclable and reusable components, has significantly increased. Electronic waste represents a significant environmental challenge which is rapidly intensifying on a global scale. Batteries and used print...

The CRISPR-Cas9 system has revolutionized genome editing, offering unprecedented precision and efficiency in gene modification. Its potential in cancer therapy, particularly oncolytic gene therapy, has garnered significant attention, especially with the development of advanced delivery platforms. However, effective and safe in vivo delivery of CRIS...

Previous studies on polydopamine (PDA)-modified titanium implants have primarily focused on single-metal-ion systems (e.g., Ag⁺, Cu²⁺, or Zn²⁺), while overlooking the interplay between corrosion resistance, antioxidant retention, and antimicrobial efficacy under clinically relevant oxidative conditions. Here, we present a comparative analysis of Ag...

Innovation with metallic nanoparticles (NPs) is increasing, but their effects on the gastrointestinal physiology of fishes is poorly understood. This study explored the effects of CuSO4 and CuO NPs (primary size; 10–20 nm) on gut motility of Salmo salar (Atlantic Salmon), using an isolated gut preparation to record the frequency and amplitude of co...

Malaria parasites infect red blood cells where they digest host hemoglobin and release free heme inside a lysosome-like organelle called the food vacuole. To detoxify excess heme, parasites form hemozoin crystals that rapidly tumble inside this compartment. Hemozoin formation is critical for parasite survival and antimalarial drug activity, but cry...

Conventional therapies for oral squamous cell carcinoma (OSCC), a serious worldwide health problem, are frequently constrained by inadequate targeting and serious side effects. Drug delivery systems (DDS) based on nanoparticles provide a possible substitute by improving drug stability, target accuracy, and lowering toxicity. By addressing issues li...

Supraparticles (SPs) with unique properties are emerging as versatile platforms for applications in catalysis, photonics, and medicine. However, the synthesis of novel SPs with complex internal structures remains a challenge. Self‐Assembled Multilayered Supraparticles (SAMS) presented here are composed of concentric lamellar spherical structures ma...

Atomic‐level catalysts are extensively applied in heterogeneous catalysis fields. However, it is a general but ineluctable issue that active metal atoms may migrate, aggregate, deactivate, or leach during reaction processes, suppressing their catalytic performances. Designing superior intrinsic‐structural stability of atomic‐level catalysts with hi...

There are various physical and chemical techniques for the synthesis of nanoparticles. However, the green synthesis of nanoparticles, particularly the biosynthesis of metal nanoparticles using plants, has garnered significant interest from researchers worldwide. In addition to being an environmentally safe technique, green synthesis offers numerous...

As known from the history of the pandemic, the Avian Influenza virus can potentially be one of the deadliest viruses of poultry. The various strains of the Avian Influenza virus also affect different animal species, including humans. Due to its continually changing genome, this virus has become more resistant to current antiviral medications and...

The municipality of Vitória, state of Espírito Santo, Brazil, has recognized emissions of atmospheric particulate matter (APM) as an environmental and human health threat, emitted mainly by the mining and steel industries. The aim of this study was to characterize and quantify the chemical elements present in the metallic nanoparticles of APM from...

Neurodegenerative diseases (NDs) are mainly characterized by progressive neuronal loss, and pose a significant healthcare burden due to limited treatment options and the inefficacy of drugs at the target site within the brain. The blood–brain barrier (BBB) presents a major challenge by restricting drug delivery, necessitating innovative therapeutic...

Ionizing radiation is widely used as a therapeutic tool. There is interest in the use of metallic nanoparticles in the role of radiation sensitizer. We have previously described an experimental system in which plasmid DNA condensed with basic oligopeptides functions as a model for chromatin. This system reproduces well the yields of DNA radiation d...

Flexible printed electronics represent a cutting‐edge technology leveraging functional inks to fabricate electronic circuits and components on diverse flexible substrates. Various advanced printing processes enable the production of computer‐controlled patterns with superior resolution and flexibility. Advances in low‐temperature sintering techniqu...

Using the sol–gel preparation method, a Carbon Matrix (CM) based on pyrogallol–formaldehyde and a hybrid NanoComposite (NC) formed by incorporating nickel oxide nanoparticles into the carbon matrix were developed. The obtained samples were heat treated by a tubular furnace under an inert atmosphere and they were characterized by different technique...

Cancer is a primary global health concern, with an estimated 35.3 million cancer cases expected worldwide, representing a 76.6% increase in 2022, and 20 million by 2050, resulting from genetic mutation and environmental factors that cause uncontrolled cell growth. Other factors including smoking, unhealthy diets, physical inactivity, exposure to ca...

This study investigates the impact of silica nanoparticle (SiNP) size on optimizing surface plasmon resonance (SPR) sensor performance, a highly sensitive technology for biological detection. Although metallic nanoparticles enhance SPR through localized plasmon generation, they can obscure the specific influence of nanoparticle size. To isolate thi...

Curve-shaped stretching sheets have many notable applications in foam bubbles, molecular films, aerosol drops, and soap films. Hybrid nanofluids exhibit effective heat transmission due to their dual metallic nanoparticles within the base fluid and have a wide range of potential uses. In this article, we investigated the Dufour and Soret effects on...

A broad spectrum of optical nanomaterials, including organic molecules, quantum dots, and metallic nanoparticles, has attracted great attention in fields such as biological imaging, data storage, solid-state lasers and solar energy conversion owing to their nonlinear optical properties facilitated by the two-photon absorption process. However, thei...

Synthesis of metallic nanoparticles (NPs) through a rapid, safe, chemical solvent‐ and agents‐free, and environmentally benign method has gained significant importance. In this study, ZnO/MgO bimetallic nanoparticle (BmNP) are successfully synthesized using Echium amoenum flower extract as a bioreducing and biostabilizing agent. To attain high‐effi...

Knowledge of the solubility of metal precursors in supercritical (sc) CO2 is a key factor for determining the best operation conditions for the synthesis of supported metallic nanoparticles. In this paper, new experimental solubility data of Cu(acac)2, Pd(acac)2, and Pt(acac)2 in scCO2 for temperatures from 313 to 353 K and pressures from 10 to 40...

The green synthesis of metallic nanoparticles (MNPs) is a promising approach for plant disease management. In this study, eco-friendly nanoparticles were produced to fight black-rot disease of cruciferous crops caused by Xanthomonas campestris pv. campestris (Xcc). Silver nanoparticles (AgNPs) were synthesized by using aqueous extracts of cabbage (...

Glioblastoma multiforme (GBM) is a grade 4 primary malignant brain neoplasm with a poor prognosis. GBM has an average survival of 12–18 months despite aggressive treatments, such as maximal safe resection, radiation, and chemotherapy with temozolomide. GBM is always associated with high incidences of treatment resistance and recurrence, which is la...

In recent years, there has been increasing concern about the adverse health effects of the metallic and metal-containing nanoparticles (NPs) present in indoor environments. Unfortunately, there is no well-stablish method to simultaneously characterize their number and composition. Recently, our research group proposed a strategy for the determinati...

Coatings for reusable hospital medical devices based on hybrid materials containing metallic nanoparticles are an alternative for preventing nosocomial infections caused by cross-contamination or biofilm accumulation. This work produced and physicochemical characterized silver nanoparticles (AgNP) and ureasil-polyether (u-PEO) hybrid materials cont...

The increasing global dependence on biofuels as an alternative to fossil fuels has spurred extensive research into optimizing their production processes. Nanotechnology has emerged as a game-changing tool for enhancing biofuel yield, purity, and efficiency, offering significant commercial potential. This review critically examines the applications...

Polymeric nanocomposites have received substantial interest in recent years because of their diverse potential applications in various fields such as electronics, agriculture, aerospace, automotive, and health care due to their excellent mechanical, electrical, thermal, and barrier properties. However, there is a lack of a comprehensive review focu...

In the current decades, researchers are actively focusing on sustainable nanotechnology lies in its multifaceted approach to solving pressing global issues through innovative applications across various sectors. By improving resource efficiency, enhancing environmental protection, and supporting economic sustainability, nanotechnology is poised to...

Food packaging is vital for protecting food from contamination and extending shelf life. The reliance on synthetic plastics raises significant environmental concerns as much of this waste ends up in landfills and ecosystems. Biopolymers, derived from renewable plant and animal sources are promising alternatives owing to their biodegradability and s...

Aluminum (Al) is often used as a metal fuel in solid propellants, whereas Co, Fe and Ni are used as combustion rate catalysts in solid propellants. However, owing to the oxide layer on the surface of Al powder, which hinders its energy release, and Co, Fe, and Ni, the nanometal particle catalysts are prone to agglomeration because of their high sur...

Bacterial infections represent a significant challenge to the success rate of both short‐ and long‐term titanium implants. Consequently, there is a persistent need for effective strategies to prevent such infections. In this study, chitosan‐based coatings modified with gold or zinc nanoparticles, recognized for their antibacterial properties, were...

A nanotecnologia tem-se demonstrado ser um campo de crescente interesse devido às suas promissoras aplicações nas mais diferentes áreas do conhecimento. Dentro da nanotecnologia, as nanopartículas metálicas, especialmente as de prata (AgNPs), destacam-se por suas diversas propriedades e usos. A obtenção de nanopartículas de prata pode ser realizada...

The discovery of antibiotics in the 20th century has played a crucial role in contemporary medicine for treating bacterial infections; however, the rise of antimicrobial resistance poses a significant threat to their efficacy, creating a global health crisis. On the other hand, the lack of discovery of new antibiotics for overcoming resistance has...

Thermal energy storage is one of the methods to reduce irreversibilities in the thermal power generation process. Phase change material (PCM) is a material that has been investigated by researchers worldwide in that direction. Literature reveals an increase in thermal storage performance with the addition of metallic nanoparticles to PCM. Hence, in...

Background: Phytochemicals possess critical therapeutic value but face limitations in yield and extraction efficiency. The emerging field of nanotechnology presents promising solutions, yet clear evidence regarding nanoparticle efficacy and safety remains sparse. Objective: This narrative review aimed to evaluate the efficacy, mechanisms, and safet...

Metallic nanoparticles (MNPs), including Iron nanoparticles (FeONPs), have a significant role in environmental remediation. Their high surface area and reactivity make them excellent agents for transforming or degrading soil antibiotics. The production of biogenic MNPs using plant powder can mitigate the adverse impacts of synthetic manufacturing p...

The necessity for more agricultural production can be fulfilled by increasing crop productivity because the cultivated area is constrained. The main source of food and nutrients for domestic animals and humans comes directly or indirectly from agriculture. However, along with climate change, plant diseases, pests, poor soil health, weeds, natura...

The necessity for more agricultural production can be fulfilled by increasing crop productivity because the cultivated area is constrained. The main source of food and nutrients for domestic animals and humans comes directly or indirectly from agriculture. However, along with climate change, plant diseases, pests, poor soil health, weeds, natural d...

Objectives/Goals: The study focuses on developing a wound patch that employs a biocompatible matrix which incorporates mesenchymal stem cells (MSCs) with wound healing and antimicrobial properties, along with antimicrobial metallic nanoparticles covered with keratinocytes derived from induced pluripotent stem cells to replicate the skin’s barrier f...

A gas sensor based on a multi-walled carbon nanotube (MWCNTs-OH) network was fabricated by filtration from the suspension method (FFS), and its properties were improved by coating the network with a polypyrrole conductive polymer. The polymer was prepared using the chemical oxidation method. Metallic nanoparticles of silver and copper were added se...

Osteosarcoma (OS) is the most frequent primary malignant bone tumor in adolescents and young adults. Despite the advances in therapy, OS remains an ominous problem because of its high metastatic potential, resistance to standard therapy, and great physical, psychological, and financial burden on patients. Available treatment options like surgery an...

Chronic wound infections have significant global health implications, leading to complications, prolonged suffering, and, most times, death. These wounds are hard to manage because of the multidrug-resistant (MDR) bacteria that colonize them. There is a need to produce alternative therapeutics against these MDR bacteria. Microbes offer a robust eco...

The isoquinoline alkaloid berberine, a bioactive compound derived from various plants, has demonstrated extensive therapeutic potential. However, its clinical application is hindered by poor water solubility, low bioavailability, rapid metabolism, and insufficient targeting. Metal-based nanoplatforms offer promising solutions, enhancing drug stabil...