There's a Micro Raman based study which shows that UV-sterilization is the best way to sterilize carbon nanotubes without altering their biological activity. Mohammad Hadi Norahan

"Micro-Raman study of the role of sterilization on carbon nanotubes for biomedical applications"

• DOI: 10.2217/nnm.09.100
• Having said that, carbon compounds having double bonds such as Fullerenes and carbon nanotubes often exhibit pro-oxidant activity on exposure to visible or UV-light. So you might have to check 2-3 methods to obtain the optimum strategy in your case.

Nabodita Sinha, Thank you very much for the answer

ethylene oxide. Then wait for several days (a week) before using in tc. Tissue culture dishes are sterilized by EO (some manufacturers). Hope it helps