Nanoparticles Overview

Nanoparticles are microscopic particles smaller than 100 nanometers, possessing unique properties such as colloids, optics, and electronics, and are widely used in fields such as medicine, cosmetics, and industry. However, its small size and strong permeability may bring health risks, so its safety needs further study. Nanoparticles have enormous potential, but their risks must be carefully evaluated. With the development of nanotechnology, their research and application will become more widespread.

Specifications of Nanoparticles

Parameter	Description
Material Name/Symbol	Depends on the product
CAS Number	Depends on the product
Nanoparticle Type	Solid
Average Particle Size (nm)	Depends on the product
Size Distribution (PSD)	Depends on the product
Morphology	Depends on the product
Surface Area (m²/g)	Depends on the product
Bulk Density (g/cm³)	Depends on the product
True Density (g/cm³)	Depends on the product
Zeta Potential (mV)	Depends on the product
Surface Charge (mV)	Depends on the product
Surface Functionalization	Depends on the product
Capping Agent	Depends on the product
Solvent/Medium	Depends on the product
Concentration (mg/mL)	Depends on the product
Purity (%)	Depends on the product
Impurities	Depends on the product
Crystal Structure	Depends on the product
Optical Properties	Depends on the product
Electrical Conductivity (S/m)	High conductivity; not typically measured in nanoparticle suspensions
Magnetic Properties	Non-magnetic
Thermal Conductivity (W/m·K)	Depends on the product
Melting Point (°C)	Depends on the product
Boiling Point (°C)	Depends on the product
Biocompatibility	Generally considered biocompatible, depending on surface functionalization
Toxicity	Low toxicity when properly functionalized; may require safety evaluation
Safety Data	Refer to MSDS provided by manufacturer
Storage Conditions	Store at room temperature, protected from light and air
Shelf Life	Stable for up to 1 year if stored under recommended conditions

Characteristic of Nanoparticles

1. Small size effect: When the size of nanoparticles is equivalent to or smaller than the physical characteristic size of light wave wavelength, de Broglie wavelength, and coherence length or transmission depth of superconducting states, the periodic boundary conditions of crystals will be disrupted, and the surface layer of amorphous nanoparticles will have a reduced atomic density, leading to new small size effects in acoustic, optical, electrical, magnetic, thermal, mechanical and other properties.

2. Surface effect: The ratio of surface area to volume of nanoparticles significantly increases with the decrease of particle size, increasing the number of atoms located on the surface, insufficient atomic coordination, and high surface energy, making these surface atoms highly active, highly unstable, and easily bound to other nanoparticles. This surface effect provides abundant surface atoms for nanoparticles, making them highly active catalysts for chemical reactions.

3. Quantum size effect: When the size of nanoparticles decreases to a specific range, the electronic energy levels inside the metal will transition from an approximately continuous state to discrete energy levels, while nano semiconductor particles exhibit discontinuous the highest occupied molecular orbital and the lowest unoccupied molecular orbital energy levels, leading to a widening of the energy gap. This phenomenon is called the quantum size effect. This effect leads to significant magnetic, optical, acoustic, thermal, electrical, and superconductivity differences between nanoparticles and macroscopic objects.

4. Macro quantum tunneling effect: The ability of microscopic particles to penetrate potential barriers is called the tunneling effect. Recently, it has been discovered that some macroscopic quantities, for example, the magnetization of microparticles and the magnetic flux in quantum coherent devices, also exhibit tunneling effects. They can cross the potential barriers of macroscopic systems and change, hence the term macroscopic quantum tunneling effect.

Nanoparticles Application

1.Medical field:

Drug delivery: Nanoparticles can support drugs, accurately delivering drugs to the affected area, uplifting the therapeutic effect of drugs, and reducing side effects.

Diagnosis: Nanoparticles can be used in imaging techniques such as MRI and CT scans to provide more accurate diagnostic information.

Cancer treatment: Certain nanoparticles can kill cancer cells or trigger immune responses to combat cancer.

2.Industrial sector:

Coatings and pigments: Nanoparticles can enhance coatings' durability, gloss, and color strength.

Catalyst: Nanoparticles can serve as catalysts for chemical reactions, improving reaction speed and efficiency.

Sensors: Nanoparticles can manufacture highly sensitive sensors for detecting gases, temperature, pressure, etc.

Nanoparticles can be used to manufacture highly sensitive sensors.jpg

Nanoparticles can be used to manufacture highly sensitive sensors

3.Energy sector:

Solar cells: Nanoparticles can improve the photovoltaic conversion efficiency of solar cells.

Energy storage materials: Nanoparticles can manufacture high-performance batteries and supercapacitors for storing and releasing large amounts of energy.

Nanoparticles can improve the photoelectric conversion efficiency of solar cells.jpg

Nanoparticles can improve the photoelectric conversion efficiency of solar cells

4.Consumer goods sector:

Cosmetics: Nanoparticles can be used to manufacture sunscreen, skin care products, etc., to improve the effectiveness and durability of products.

Textiles: Nanoparticles can enhance fabrics' waterproof, antibacterial, and anti-static properties.

Company Profile

Rboschco.com is a trusted global chemical material supplier & manufacturer with over 12-year-experience in providing super high-quality chemicals and nanomaterials, including Nanoparticles, nitride powder, graphite powder, sulfide powder, 3D printing powder, etc.

The company has a professional technical department and Quality Supervision Department, a well-equipped laboratory, and equipped with advanced testing equipment and after-sales customer service center.

If you are looking for high-quality Nanoparticles, please feel free to contact us or click on the needed products to send an inquiry.

Payment Term

L/C, T/T, Western Union, Paypal, Credit Card etc.

Shipment Term

By sea, by air, by express, as customers request.

Storage Conditions:

1. Prevent agglomeration: Nanoparticles are prone to accumulation due to their small size and high surface energy. Aggregation can alter nanoparticles' physical and chemical properties, so it is important to minimize the occurrence of aggregation during storage. A common method is to use surfactants or stabilizers to prevent aggregation.
2. Choose a suitable container: Nanoparticles should be stored in sealed, lightproof, and waterproof containers to prevent them from coming into contact with oxygen, moisture, or other pollutants in the air. For certain specific nanoparticles, such as silicon nanoparticles, it is also necessary to consider avoiding contact with carbon dioxide.
3. Control temperature and humidity: Temperature and humidity significantly impact the stability of nanoparticles. Generally speaking, a low temperature and humidity environment is conducive to maintaining the stability of nanoparticles. Therefore, it is recommended to store nanoparticles in a low-temperature, dry environment.
4. Avoid prolonged exposure: Some nanoparticles, such as nickel-cobalt nanoparticles, are easily affected by oxygen and moisture in the air, leading to surface oxidation or aggregation. Therefore, it is suggested to avoid prolonged exposure to the air as much as possible.
5. Marking and recording: The container for storing nanoparticles should be marked, including the name of the nanoparticles, storage date, and any special storage conditions. In addition, changes in storage conditions should be regularly recorded to ensure the stability of nanoparticles.

FAQ

Q1

How does the size of nanoparticles affect their physical and chemical properties?

Re: The size of nanoparticles significantly impacts their physical and chemical properties. As the size decreases, nanoparticles exhibit unique colloidal, optical, and electrical properties. Due to the small size effect, nanoparticles have a large specific surface area and high surface energy, which makes them highly chemically active. In addition, nanoparticles also exhibit quantum size effects, meaning that their electronic structure changes, leading to band structure changes and different optoelectronic properties from macroscopic materials. These unique properties make nanoparticles have broad application potential in multiple fields.

Q2

How can nanoparticles be used for drug delivery, diagnosis, and treatment in the medical field?

Re: In medicine, nanoparticles have shown enormous potential in drug delivery, diagnosis, and treatment due to their small size and special properties. Nanoparticles can serve as drug carriers, achieving targeted drug delivery by precisely controlling drug release, improving therapeutic efficacy, and reducing side effects. In addition, nanoparticles can be used for medical imaging, such as MRI and optical imaging, to improve image resolution and contrast. Meanwhile, nanoparticles can also be used for early diagnosis and remedy diseases, such as targeted therapy and biomarkers for cancer.

Q3

How safe are nanoparticles?

Re: The safety of nanoparticles depends on a number of factors, including the type of material, size, shape, and surface chemistry. Studies have shown that some nanoparticles may pose potential risks to human health and the environment, such as triggering inflammatory reactions or other biological effects after entering the body through inhalation or skin contact. However, many nanoparticles are also designed to have good biocompatibility and low toxicity, especially in medical applications. To ensure safety, researchers are continuously evaluating different types of nanoparticles and developing appropriate regulations and guidelines to govern their use. In addition, consumers should choose certified products and follow the safety guidelines provided by manufacturers.

Q4
What are the unique properties of nanoparticles that make them so special?

Re: The unique properties of nanoparticles stem primarily from their extremely small size, a property that leads to the following advantages:
High specific surface area: nanoparticles have a larger surface area per unit mass, which enhances their catalytic activity, adsorption capacity and reaction efficiency.
Quantum size effect: When particle size is reduced to the nanometer level, the electronic behavior changes, which affects optical, electrical and magnetic properties. For example, gold nanoparticles can exhibit strong color changes (surface plasmon resonance), while semiconductor nanoparticles emit fluorescence.
Permeability and diffusivity: Nanoparticles are able to penetrate cell membranes and other biological barriers more easily, which is particularly important for drug delivery systems.
Mechanical strength and toughness: Nanostructured materials typically exhibit higher hardness and wear resistance, making them suitable for making high-performance composites.

Q5
What are the application areas of nanoparticles?

Re: Nanoparticles have a wide range of applications covering several key areas:
Medicine and health: for targeted drug delivery, cancer treatment (e.g., photothermal therapy), medical imaging (e.g., contrast agents), and tissue engineering.
Electronics and Information Technology: as key components in conductive inks, transparent conductive films, memory devices and sensors.
Energy & Environment: Involved in the design and development of solar cells, lithium-ion batteries, supercapacitors, catalysts and air purifiers.
Consumer Goods: Improving the functionality of cosmetics, textiles, coatings and packaging materials to provide better protection, durability and aesthetics.
Agriculture & Food: Used as smart packaging, food additives, pesticide carriers and nutritional supplements to improve food safety and shelf life.