Freestanding CNT sheet is produced by floating catalyst chemical vapour deposition method (FC-CVD) in one step process. This process is having advantage of being very simple, low cost and easy to further scale up. FC-CVD process is utilized to synthesize CNT aerogel, an ultra-lightweight material with a dense and continuous network of CNTs. CNT aerogel is further converted into CNT sheet by collecting on a rotating drum. This enables the production of highly uniform and aligned CNT sheets in a single step. These sheets are well-suited for a wide range of applications.

CNT finds great potential in nano technology, nanomechanics, biotechnology, advanced electronics & other field of material science and technology. Some of the novel applications include high strength composites, EMI shielding, supercapacitor, battery electrodes, green catalysis, efficient drug delivery & biosensors, energy storage & energy conversion devices, transparent conducting films, field emission display, highly porous membrane, thermal interface, electrical interconnect, etc. It is also highly demanded for used in materials of sustainable future & green technologies.

1. Sheet Dimension : 45 X 20 cm2
2. CNT Type : Multi walled
3. CNT Diameter : 10-25 nm
4. Purity > 95%

The exotic properties of individual CNTs in nanometric dimension can be translated into macro-scale through free standing carbon nanotube sheets (CNT sheets). That is why these are highly sought after for many applications. To meet the increasing demand for CNT sheets, a simple and scalable method has been developed using FC-CVD, which enables the production of uniform and aligned CNT sheets in a single step. FC-CVD process is utilized to synthesize CNT aerogel, an ultra-lightweight material with a dense and continuous network of CNTs. CNT aerogel is further converted into CNT sheet by collecting on a rotating drum. CNT sheet exhibits exceptional mechanical properties, low density, high surface area, and other desirable characteristics. These sheets are well-suited for a wide range of applications.

Free standing CNT sheet is produced by floating catalyst chemical vapour deposition (FC-CVD) method. This process is having advantage of being very simple, low cost and easy to further scale up. Ethanol, ferrocene, thiophene, argon and hydrogen are used as raw materials. Ethanol, ferrocene and thiophene are mixed using ultrasonic mixing to form a solution which is injected in the reactor using a syringe pump. Argon and hydrogen mixture is used as the carrier gas. Argon provides inert condition in the reactor and hydrogen controls the cracking of hydrocarbon and also provides a reducing atmosphere. The reaction happens in a resistance heating horizontal tubular furnace. CNT sheets are collected on a rotating drum inside a glove box on continuous basis. Glove box is purged with argon gas to maintain inert condition.

Free standing Carbon Nanotube (CNT) sheets are highly sought after for high strength composites, EMI shielding, supercapacitor, battery electrodes, green catalysis, efficient drug delivery & biosensors, energy storage & energy conversion devices, transparent conducting films, field emission display, highly porous membrane, thermal interface, electrical interconnect, etc. due to their exceptional mechanical, electrical, and thermal properties.

1. High temperature CVD reactor with glove box and syringe pump
2. Acid treatment facility for purification
3. Ultra sonication for mixing precursor liquids

1. Scalable process
2. Simple and easy operation
3. Low cost of production
4. Raw materials – Low cost and easily available