Application Of Magnetic Nanomaterials Research Articles

Applications of magnetic nanomaterials in the fabrication of lateral flow assays toward increasing performance of food safety analysis: Recent advances

Up to now, the life of humans is complex, and it has been under attack by numerous factors. In other words, human beings are relationship with living in a healthy and clean environment. Remarkably, life on the planet Earth has been threatened by food contamination in all areas of the world. Over the last few years, the portability of analytical methods has received considerable attention in biosensors. Among these, lateral flow assays (LFAs) can consider one of the critical types of portable sensing platforms. The vast majority of conventional LFAs operate according to the gold nanoparticles (AuNPs) signaling. However, the presence of NaCl in real samples can decrease the performance of the AuNPs-LFA. Thereby, the substitute of AuNPs with other types of nanomaterials (NMs) or using hybrid NMs can boost the application of these sensing biodevices in different real samples. Elaborately, magnetic nanomaterials (MNMs) can play a significant role in developing sensing approaches, especially later flow assays LFAs. These NMs not only do quantitative measurements by coupling with an external reader, but they can also act as an immunomagnetic separation agent. In addition, ease of use, less coat, and size uniformity can highlight their application in food safety. Therefore, the application of MNMs in LFA with different formats can significantly reduction in the limit of detection (LOD) of the analyte without methodically complicating the analytical procedure. In this review, we attempted to highlight the recent progress and technical breakthroughs of MNMs in LFA for food safety.

Research Progress on the Application of Magnetic Nanomaterials in Water Pollution Control

Abstract: With the increasing shortage of water resources and the improvement in people's awareness regarding environmental protection, the traditional water pollution control technology cannot meet the needs of the development of environmental protection. In recent years, the rapid development of nanotechnology and nanomaterials has provided a good opportunity for the innovation of water treatment technology and has attracted the extensive attention of many environmental researchers. In particular, new functional magnetic nanomaterials with good adsorption properties, good chemical stability, easy regeneration, and easy solid-liquid separation have become hot topics in the field of water pollution control. This paper aims to provide the present research progress of magnetic nanomaterials in water pollution control, including the striking characteristics and preparation methods of the most well-known magnetic nanomaterials, as well as their applications in the water pollution control field. Concluding remarks and future trends have also been pointed out.

Application of magnetic nanomaterials in bioanalysis

The importance of magnetic nanomaterials and magnetic hybrid materials, which are classified as new generation materials, in analytical applications is increasingly understood, and research on the adaptation of these materials to analytical methods has gained momentum. Development of sample preparation techniques and sensor systems using magnetic nanomaterials for the analysis of inorganic, organic and biomolecules in biological samples, which are among the samples that analytical chemists work on most, are among the priority issues. Therefore in this review, we focused on the use of magnetic nanomaterials for the bioanalytical applications including inorganic and organic species and biomolecules in different biological samples such as primarily blood, serum, plasma, tissue extracts, urine and milk. We summarized recent progresses, prevailing techniques, applied formats, and future trends in sample preparation-analysis methods and sensors based on magnetic nanomaterials (Mag-NMs). First, we provided a brief introduction of magnetic nanomaterials, especially their magnetic properties that can be utilized for bioanalytical applications. Second, we discussed the synthesis of these Mag-NMs. Third, we reviewed recent advances in bioanalytical applications of the Mag-NMs in different formats. Finally, recently literature studies on the relevance of Mag-NMs for bioanalysis applications were presented.

Recent advances in the application of magnetic Fe3O4 nanomaterials for the removal of emerging contaminants.

Emerging contaminants (ECs) are widely distributed and potentially hazardous to human health and the ecological system. However, traditional wastewater treatment techniques are not sufficient to remove ECs. Magnetic nanomaterials are made of ferromagnetic or superparamagnetic magnetic elements such as iron and nickel, which can be easily separated from the aqueous solution, making them ideal adsorbents for contaminants in water. This review focused on the synthesis approaches of magnetic Fe3O4 nanoparticles (MFNs), as well as surface modification in order to improve their stability and functional diversity. Also, a detailed summary on the state-of-art application of magnetic nanomaterials on the removal of ECs was addressed. Additionally, challenges and future prospective of applying magnetic nanomaterials into real-world cases were discussed, in which the green and simple synthesis and evaluation of the toxic effects of MFNs are still of great challenge. This work summarizes the recent progress of using magnetic nanomaterials as promising and powerful tools in the treatment of ECs-contaminated water, benefiting researchers interested in nanomaterials and environmental studies.

Application of magnetic nanomaterials in electroanalytical methods: A review

Magnetic nanomaterials (MNMs) have gained high attention in different fields of studies due to their ferromagnetic/superparamagnetic properties and their low toxicity and high biocompatibility. MNMs contain magnetic elements such as iron and nickel in metallic, bimetallic, metal oxide, and mixed metal oxide. In electroanalytical methods, MNMs have been applied as sorbents for sample preparation before the electrochemical detection (sorbent role), as the electrode modifier (catalytic role), and the integration of the above two roles (as both sorbent and catalytic agent). In this paper, the application of MNMs in electroanalytical methods have been classified based on the main role of the nanomaterial and discussed separately. Furthermore, catalytic activities of MNMs in electroanalytical methods such as redox electrocatalytic, nanozymes catalytic (peroxidase, catalase activity, oxidase activity, superoxide dismutase activity), catalyst gate, and nanocontainer have been discussed.

Recent Advances of Magnetic Nanomaterials in Bone Tissue Repair.

The magnetic field has been proven to enhance bone tissue repair by affecting cell metabolic behavior. Magnetic nanoparticles are used as biomaterials due to their unique magnetic properties and good biocompatibility. Through endocytosis, entering the cell makes it easier to affect the physiological function of the cell. Once the magnetic particles are exposed to an external magnetic field, they will be rapidly magnetized. The magnetic particles and the magnetic field work together to enhance the effectiveness of their bone tissue repair treatment. This article reviews the common synthesis methods, the mechanism, and application of magnetic nanomaterials in the field of bone tissue repair.

The investigation of structural and magnetic properties of MnFe2−xWxO4 nanoparticles

The investigation of effective synthesis routes and applications of magnetic nanomaterials are of great importance in recent years. Here in this article, W3+ substituted manganese ferrite (MnFe2−xWxO4) nano particles were prepared via cost effective and a new micro emulsion strategy. The synthesized materials were first characterized by different physicochemical analyzing techniques to study the structural, spectral and magnetic properties in detail. From the XRD investigation, a cubic phase was observed in all samples of Tungsten substituted Manganese ferrites with a very minute secondary phase. Variation in lattice parameters and observed peak shifting in substituted samples directed towards introduction of tungsten ions in the spinel MnFe2O4. The change in band positions (ν1 and ν2) also suggested the incorporation of foreign impurity (W3+) in spinel lattice. From the magnetic measurement investigation, a significant rise in saturation magnetization (Ms) and coercivity (Hc) was observed. In this regard, the excellent properties and the soft magnetic behavior and of this new tungsten substituted manganese ferrite (MnFe2−xWxO4) suggested its effective utilization in sensors, switching, multilayer chip inductor and many advance technological applications.

Recent Advancements of Magnetic Nanomaterials in Cancer Therapy.

Magnetic nanomaterials belong to a class of highly-functionalizable tools for cancer therapy owing to their intrinsic magnetic properties and multifunctional design that provides a multimodal theranostics platform for cancer diagnosis, monitoring, and therapy. In this review article, we have provided an overview of the various applications of magnetic nanomaterials and recent advances in the development of these nanomaterials as cancer therapeutics. Moreover, the cancer targeting, potential toxicity, and degradability of these nanomaterials has been briefly addressed. Finally, the challenges for clinical translation and the future scope of magnetic nanoparticles in cancer therapy are discussed.

Applications of Magnetic Nanomaterials in Heterogeneous Catalysis

Magnetic nanomaterials show promising applications in heterogeneous catalysis because of their ease of separation and good reusability. The magnetization saturation values of magnetic nanoparticles...

Biomedical Response and Different Applications of Magnetic Nanomaterials

Biomedical Response and Different Applications of Magnetic Nanomaterials

Biomedical Response and Different Applications of Magnetic Nanomaterials

From the ultimate decade, nanoscience and nanotechnology have been multiple explored for wide studies in medical science. The bodily principles vital a few contemporary biomedical programs of magnetic nanoparticles (MNPs) are inspected. Starting from basic magnetic concepts of MNPs which are responsible for biomedicine, and drawing on examples from biomedicine, the relevant physics of MNPs and their responses to implemented magnetic fields are inspected. This mini review discusses about the different responsible properties for biomedicine and the various biomedical applications of MNPs as reported by the different researchers.