Metal Oxide Nanoparticles
Metal Oxide Nanoparticles - Related Videos
12:19
Identification of Metal Oxide Nanoparticles in Histological Samples by Enhanced Darkfield Microscopy and Hyperspectral Mapping
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Cited by 37 •
2015
Enhanced darkfield microscopy and hyperspectral imaging with spectral mapping enable screening, localization, and identification of nanoscale materials in histological samples with improved speed and accuracy over traditional methods. The goal of this paper is to provide methods for darkfield imaging and hyperspectral mapping of metal oxide nanoparticles in histological samples.
14:53
In Situ Detection and Single Cell Quantification of Metal Oxide Nanoparticles Using Nuclear Microprobe Analysis
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Cited by 3 •
2018
We describe a procedure for the detection of chemical elements present in situ in human cells as well as their in vitro quantification. The method is well-suited to any cell type and is particularly useful for quantitative chemical analyses in single cells following in vitro metal oxide nanoparticles exposure.
02:52
Synthesis of Metal Oxide Microcapsules Using Metal-Reducing Bacteria
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2025
Source: Lin, P., et al. Synthesizing Sodium Tungstate and Sodium Molybdate Microcapsules via Bacterial Mineral Excretion. J. Vis. Exp. (2018).This video demonstrates the procedure for synthesizing rigid metal oxide microcapsules by culturing metal-reducing bacteria with metal ions, followed by sequential purification through sonication, centrifugation, and ethanol washing.
08:43
Molten-Salt Synthesis of Complex Metal Oxide Nanoparticles
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Cited by 32 •
2018
Here, we demonstrate a unique, relatively low-temperature, molten-salt synthesis method for preparing uniform complex metal oxide lanthanum hafnate nanoparticles.
08:12
Generation of Zerovalent Metal Core Nanoparticles Using n-(2-aminoethyl)-3-aminosilanetriol
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Cited by 4 •
2016
A novel method for metal core nanoparticle synthesis using a water stable silanol is described.
FAQs
A larger proportion of atoms lies at or near the surface, where chemically active sites can interact with surrounding substances. These sites influence adsorption and reaction behavior, while surface and quantum effects can alter properties compared with larger materials. Consequently, controlling particle dimensions becomes important when designing nanoparticles for catalysis, sensing, or environmental remediation.
Synthesis conditions determine how rapidly nuclei form, how particles grow, and how ordered their crystal structures become. Precipitation, sol-gel processing, and thermal treatment provide different ways to influence these stages and the resulting surface structure. Adjusting such conditions helps produce particles with targeted size, shape, composition, and chemical reactivity.
Particle size changes the relative contribution of surface atoms and size-dependent effects, while shape exposes different surface structures. Composition can modify the chemical properties of the oxide itself. Together, these variables affect surface-site reactivity and other material behaviors, allowing chemists to tune nanoparticles for particular catalytic, sensing, photocatalytic, or energy-related functions.
Characterization examines structural features that arise from synthesis, including particle dimensions, shape, crystallinity, composition, and surface structure. Relating these features to observed reactivity helps determine which material properties control performance. In chemistry research, this structure-to-function connection guides refinement of synthesis conditions and supports the design of more effective nanoparticle-based technologies.
Common routes include precipitation, sol-gel processing, and thermal treatment. These approaches are used to control nucleation, particle growth, crystallinity, and the arrangement of surface sites. A preparation workflow therefore links the selected chemical method and treatment conditions to the structural properties required for a later catalytic, sensing, photocatalytic, or energy-storage application.
They are useful when surface reactivity and size-dependent properties can support chemical transformations. Catalysis relies on the behavior of reactive surface sites, whereas photocatalysis represents a related application in which the material's properties are used to promote processes involving light. Structural characterization helps researchers connect particle design with the effectiveness of these applications.
Metal oxide nanoparticles also appear in sensors, energy storage, environmental remediation, and antimicrobial materials. These areas rely on different combinations of composition, surface structure, particle size, and chemical reactivity. Chemistry-based synthesis and characterization allow researchers to adjust those features and evaluate how the resulting material behaves in a specific technological or environmental setting.