Carbon nanotubes (CNTs) are a fascinating material with many potential applications. However, they also come with several significant hazards that need to be carefully managed.
What are the Hazards of CNT? (4 Key Risks to Know)
1. Pulmonary Exposure
Inhalation of CNTs can lead to lung inflammation.
This inflammation has been linked to the development of lung fibrosis and cancer.
CNTs can have harmful effects on the respiratory system if they are inhaled.
2. Toxic Gaseous Precursors
The chemical vapor deposition (CVD) process used to grow CNTs involves certain gaseous precursors.
These precursors, like Cu(acac)2, B2H6, or Ni(CO)4, are poisonous, corrosive, and explosive.
If not handled and delivered with caution, they can pose risks to the environment and the health of those exposed to them.
3. Toxic Gaseous Byproducts
During the CVD process, gaseous byproducts such as HF, H2, or CO can be produced.
These byproducts are highly toxic and need to be processed properly when released from the vacuum chamber.
Proper processing is necessary to prevent harm to the environment and individuals.
4. High Temperature Coating
CVD processes deposit thin-film coatings at very high temperatures.
Some substrate materials may have poor thermal stability and cannot withstand these high temperatures.
Using such materials can lead to failure in the CVD process and potentially hazardous situations.
While CVD has its benefits, such as the ability to build uniform thickness over substrates, precautions need to be taken to ensure the safety of those working with CVD processes.
Following a standard operating procedure (SOP) is necessary to minimize the risks associated with toxic precursors and byproducts in CVD.
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