Single Walled Carbon Nanotubes
Автор: Shilpent
Загружено: 2022-02-04
Просмотров: 185
#singlewalledcarbonnanotubes #carbonnanotubes #nanotubes #nanotech #nanotechnology
Single Walled Carbon Nanotubes
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Single walled carbon nanotubes (SWCNT) have chemically derived from graphene, an allotrope of carbon. It is a one-dimensional material due to its high aspect ratio. The SWCNT is a one atom thick sheet of graphene that looks like a tube. There are various methods to produce the Single walled carbon nanotubes; however, the Catalytic chemical vapor deposition (CCVD) method is one of the popular techniques. We use the same to produce this product. It is one of the popular types of nanotubes, and it possesses a 0 to 2 eV band gap.
At the core, the single walled carbon nanotubes have sp2 hybrid bonds, and the diameter ranges from 0.7 and 10 nm. Ideally, the diameter is less than or equal to 2 nm. Typically, the product has two configurations - zigzag and armchair.
• Zigzag configuration – It has a graphene-like structure that changes path at a 60-degree angle that alternates in a zigzag pattern on every next step of the bond.
• Armchair configuration – The armchair configuration is similar to the zigzag configuration, the only difference being that the structure changes the path twice. That means there are two turns to the right and left on every four steps, while that of the zigzag was only one.
We offer single-walled carbon nanotubes in powder as well as in dispersion form. Since we are the product manufacturers and sellers, we also customize the product according to the client's requirements if the order is in bulk. The functionalized groups of the single walled carbon nanotubes are also available on demand. If the researcher wishes to disperse the product in aqueous solvents, it must opt for the functionalized groups.
Properties of Single Walled Carbon Nanotubes
• Strength – Since the SWCNTs have sp2 bonding between the atoms, it exhibits remarkably high strength. It has a strength of 48,000 kN·m·kg−1 that is more than that of diamond and steel.
• Conductivity – It has a current-carrying capacity of 4 × 109 A/cm2, which is 1000 times more than copper, a highly conductive material. However, it acts as semiconductors in many applications.
• Thermal Resistance – It has high heat resistance. It is greater than 3000 W/m.k, making it suitable for many gadgets that need high thermal resistivity.
• Mass – It is one of the lightest know materials that exhibit remarkable strength. It has a maximum mass density of 1.6 g cm−3.
• Length – So far, the length to which a carbon nanotube is grown is 1/2 meter or 550mm. Therefore, it helps applications that require the conductive or insulate material to have a continuous bond.
• Toxicity – Researches prove that single walled carbon nanotubes are non-toxic to the human body. The material is inert and thus does not react with the human body. However, it can prove to be harmful if one ingests or inhales it.
Applications of Single Walled Carbon Nanotubes
• Additive Agents – The combination of single walled carbon nanotubes with non-conducting agents such as polymers, plastics, nylon, ceramics, etc., creates materials that act as semiconductors or exhibits exceptional strength depending on the type of material. Moreover, it improves the stability, thermal resistivity, electrical conductivity, heat conductivity of the material.
• Automobile Hardware Components – Since SWCNT improves the material's strength with composition, it helps make various hardware components of automobiles like seats, dashboards, riser handlebars, cranks, forks, seat posts, stems, and aero bars.
• Sports Equipment – Skis, baseball bats, ice hockey sticks, surfboards, hunting arrows, etc., are usually composites of carbon nanotubes.
• Textile Industry – It is a reliable and versatile product. Its composition with fabrics creates a strong material that is sustainable and strong and stain-resistant. Therefore, it is helpful in creating body armors and vehicle armors, woven fabrics, etc.
• Electronic Equipment – Materials with a composition of SWCNT have high electrical conductivity and uses in PCBs, capacitors, batteries, cells, solar batteries, and cells. It also acts as a heat-resisting agent and is suitable in smartphones, smartwatches, and various other gadgets that need compact space but high usage of minimum components.
• Sensors And Membranes – It helps make biochemical sensors and membranes with extraordinary properties.
• Water Filtration And Air Purification – It has a dense structure. When a water filtration device uses carbon nanotubes as a filter method, results prove that it also kills the bacteria and filters the water. Similarly, in air purifiers, the minute particles are purified, killing most of the bacteria and releasing fresh and healthy air to breathe.
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