Synthesis and Characterisation of Nanomaterials

Saravanan, P.; Gopalan, R.; Chandrasekaran, V.

doi:10.14429/dsj.58.1671

Cited by 36 publications

(5 citation statements)

References 29 publications

(25 reference statements)

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“…It's a high-energy method that introduces structural faults, chemical disorders, and elastic strain to the source bulk material throughout the procedure. As a result, nanostructures are generated [15]. Mechanical milling is best exemplified by ball milling.…”

Section: Mechanical Milling Methodsmentioning

confidence: 99%

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Synthesis Routes for Ferrites and Their Impact on the Properties of Ferrites

Rana

Dhiman

Kumar

et al. 2021

Engineering Materials

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Nano ferrites have piqued interest owing to their numerous uses in biomedical, wastewater remediation, and electronic devices. This chapter is primarily concerned with the various fabrication techniques for ferrite nanoparticles. This chapter presents various methods used for ferrites preparation with distinctive examples, their advantages as well as limitations in detail. The fabrication techniques used to achieve ferrites nanoparticles of various structures and morphologies, such as hydrothermal, microemulsion, solvothermal, solution combustion, microwave, chemical vapor deposition, sol-gel, chemical bath deposition, or wet chemical synthesis, sonochemical, thermal decomposition, and electrochemical methods, are briefly described. This chapter summarizes the recent work on the influence of synthesis techniques on the properties of ferrites in nanoform. Ferrites belong to the materials which are a potential candidate for widely spread applications. Keywords Ferrites • Nano materials • Synthesis techniques 1 IntroductionThe three major targets of magnetic nanomaterials are synthesis, knowledge of novel advanced materials, and relationships between them. Nanomaterials are those materials whose particle size lies between the range of 10-100 nm in at least one or more dimensions, as defined by their nanometric equivalents. A large number of atoms are present at or near the surface of particles at this length scale, giving the materials their specific properties. Nanomaterials have a high surface-to-volume ratio which

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Section: Mechanical Milling Methodsmentioning

confidence: 99%

“…In these techniques, nano-systems are generated by adding atoms to atoms, molecules to molecules, or clusters to clusters. When it comes to producing nanostructured materials with homogeneous structures and distributions, the bottom-up technique is far superior to the top-down approach [15].…”

Section: Fabrication Of Ferrite Nanoparticlesmentioning

confidence: 99%

Synthesis Routes for Ferrites and Their Impact on the Properties of Ferrites

Rana

Dhiman

Kumar

et al. 2021

Engineering Materials

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“…Naturally synthetizing metallic nanoparticles (NP) presents a number of advantages, such as: (i) the possibility to mass produce metallic NP without using toxic compounds [6], (ii) the ease with which the raw material can be found, (iii) a secured working environment due to the use of non-toxic biological materials, (iv) a reasonable cost in most cases, (v) a respect of the environment, (vi) the existence of a large number of biological compounds that can be chosen for the synthesis, such as plant metabolites acidic compounds, aldehydes, alkaloids, amino acids, alkaloids, aromatic amines, flavonoids phenolic compounds, ketones, phenols, phyto-proteins, polysaccharides, proteins, saponins, steroids, sugar compounds, tannins, terpenoids, vitamins, fungus, yeast, bacteria, virus, and bio-polymer [8], (vii) biological entities, which can have multiple functions at the same time, often combining a reducing capacity of metallic ions with either a stabilizing role, e.g., for starch, dextran, alginate, cellulose, chitin, yeast/fungus extracts, or a chemotherapeutic effect, e.g., for curcumin [9][10][11], (viii) the possibility to reach optimized NP properties, such as a high NP production yield, or a desired NP size/shape, by adjusting various synthesis parameters, such as the type of biological and metallic precursor materials used, the ratio between the quantities of precursor and biological material, the pH, temperature, or time of the reduction reaction [12], and, finally, (ix) the possibility to genetically modify certain living organisms to optimize metallic ion bio-mineralization by these organisms [11].…”

Section: Advantages Of Natural Chemical Synthesis Of Metallic Nanoparmentioning

confidence: 99%

Natural Metallic Nanoparticles for Application in Nano-Oncology

Alphandéry

2020

IJMS

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Here, the various types of naturally synthesized metallic nanoparticles, which are essentially composed of Ce, Ag, Au, Pt, Pd, Cu, Ni, Se, Fe, or their oxides, are presented, based on a literature analysis. The synthesis methods used to obtain them most often involve the reduction of metallic ions by biological materials or organisms, i.e., essentially plant extracts, yeasts, fungus, and bacteria. The anti-tumor activity of these nanoparticles has been demonstrated on different cancer lines. They rely on various mechanisms of action, such as heat, the release of chemotherapeutic drugs under a pH variation, nanoparticle excitation by radiation, or apoptotic tumor cell death. Among these natural metallic nanoparticles, one type, which consists of iron oxide nanoparticles produced by magnetotactic bacteria called magnetosomes, has been purified to remove endotoxins and abide by pharmacological regulations. It has been tested in vivo for anti-tumor efficacy. For that, purified and stabilized magnetosomes were injected in intracranial mouse glioblastoma tumors and repeatedly heated under the application of an alternating magnetic field, leading to the full disappearance of these tumors. As a whole, the results presented in the literature form a strong basis for pursuing the efforts towards the use of natural metallic nanoparticles for cancer treatment first pre-clinically and then clinically.

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“…However, its effectiveness depends greatly on the preparation methods, dispersant and subsequent applicability. Generally, nanoparticles can be prepared via chemical, biological or physical methods, although the preparation method is mainly based on the nature of the material and associated chemical reactions [29], and the applications thereof.…”

Section: Nanoparticlesmentioning

confidence: 99%

Nanofluids as Novel Alternative Smart Fluids for Reservoir Wettability Alteration

Nwidee¹,

Barifcani²,

MohammadSarmadivaleh³

et al. 2018

Novel Nanomaterials - Synthesis and Applications

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This chapter presents an account of two metal oxide nanoparticles (zirconium and nickel oxide) on basis of their structure, morphology, crystallinity phases, and their wetting effect on solid-liquid interface. As a preliminary step to sound understanding of process mechanisms; wettability, nanoparticles, and their relations thereof were scrutinized. To investigate the nanofluids wetting inclinations, complex mixtures of the nanoparticles and NaCl brine (ZrO 2 /NaCl; NiO/NaCl) were formulated and their technical feasibility as wetting agents tested via contact angle measurement. The result shows that the nanoparticles exhibit different structural and morphological features and capable of addressing reservoir wettability challenges owing to favorable adsorption behavior on the surface of the calcite which facilitated the wetting changes quantified by contact angle. We believe this study will significantly impact the understanding of wetting at solid-liquid interface which is crucial for recovery process optimization.

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Synthesis and Characterisation of Nanomaterials

Cited by 36 publications

References 29 publications

Synthesis Routes for Ferrites and Their Impact on the Properties of Ferrites

Synthesis Routes for Ferrites and Their Impact on the Properties of Ferrites

Natural Metallic Nanoparticles for Application in Nano-Oncology

Nanofluids as Novel Alternative Smart Fluids for Reservoir Wettability Alteration

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