OH Functionalized Graphitized MWNTs (>99.9%, OD: 50-80nm)
Graphitized high purity multi-walled carbon nanotubes (MWNTs) were produced by a low temperature CVD method and subsequently annealed about twenty (20) hours under condition of inert gas at temperatures between 1600 and 3000°C. These products were characterized for chemical purity, interlayer spacing, and defect healing. The graphitization procedure was found to remove residual metal catalyst in the nanotubes and reduce the wall defects as reflected in a reduced interlayer spacing between the graphene shells. The graphitized MWNTs have the highest graphite crystallization, the high electrical conductivity and the excellent inoxidizability. The electrical conductivity of the graphitized MWNTs is very close to that of graphite powder. And its ignition temperature can reach 800°C.
| OH Functionalized Graphitized MWNTs | |
| Product No | NRE-40009 |
| CAS No. | NA |
| Purity | Carbon nanotubes > 99.9wt% |
| Average Diameter | 50-80 nm |
| Average Length | 10-30 um (TEM) |
| Special Surface Area(SSA) | >20m2/g(BET) |
| Tap Density | NA |
| True Density | 2.1g/cm3 |
| Electric Conductivity | > 100 S/cm |
OH Functionalized Graphitized MWNTs
OH-functionalized graphitized MWNTs combine the beneficial properties of graphitization and hydroxyl functionalization, resulting in enhanced mechanical, electrical, and chemical performance. These modified carbon nanotubes are highly valued in diverse applications, including composite materials, energy storage, electronics, biosensing, and biomedical fields.
Applications
Composite Materials
Polymer Nanocomposites: OH-functionalized graphitized MWNTs are commonly used as fillers in polymer matrices to enhance mechanical strength, thermal stability, and electrical conductivity. The improved dispersion of MWNTs in the polymer matrix leads to superior performance in various applications:
Automotive components: Lightweight, high-strength materials for vehicle body parts and interior components.
Aerospace applications: High-strength, low-weight composites for aircraft parts and satellite components.
Consumer electronics: Enhanced electromagnetic shielding and conductive films.
Energy Storage and Conversion
Supercapacitors: OH-functionalized graphitized MWNTs are excellent candidates for use in supercapacitors due to their high surface area, electrical conductivity, and fast charge/discharge capabilities. These supercapacitors find applications in:
Electric vehicles (EVs) for quick charging and regenerative braking systems.
Portable electronics such as smartphones and laptops.
Energy storage systems in renewable energy applications, like solar and wind power storage.
Lithium-Ion Batteries: OH-functionalized MWNTs can be used as anode or cathode materials in lithium-ion batteries. Their high conductivity and cycling stability enhance the performance of these batteries, which are widely used in:
Portable devices such as smartphones, tablets, and laptops.
Electric vehicles (EVs), where high energy density and long cycle life are critical.
Energy storage systems for homes and commercial buildings.
Fuel Cells: OH-functionalized MWNTs are also used as catalyst supports in proton exchange membrane fuel cells (PEMFCs). Their high surface area and chemical reactivity improve the efficiency and durability of fuel cells, which are used in:
Hydrogen-powered vehicles.
Portable power sources and backup power systems.
3Electronics and Nanoelectronics
Field-Effect Transistors (FETs): OH-functionalized MWNTs are used to create carbon nanotube field-effect transistors (CNT-FETs). The hydroxyl groups improve the performance of these transistors by enhancing the electrical conductivity and stability, which is essential for high-speed electronic applications. CNT-FETs have the potential to be used in:
Flexible electronics (e.g., wearable devices, smart textiles).
High-performance computing and nanoelectronics.
Electromagnetic Interference (EMI) Shielding: MWNTs, functionalized with hydroxyl groups, are utilized in EMI shielding materials, which protect sensitive electronics from electromagnetic radiation. These materials are critical in:
Consumer electronics such as smartphones and laptops.
Medical devices that require protection from external radiation.
Aerospace and military electronics.
Transparent Conductive Films: OH-functionalized MWNTs are used to create transparent conductive films for applications in:
Touchscreens, displays, and solar cells.
Flexible electronic devices such as wearable sensors or e-paper displays.
Environmental sensing for monitoring pollutants or toxins in water and soil.
