I want to synthesis functional MWCNT from pristine MWCNT using acid treatment but I haven't vacuum oven for drying but I have a normal hot air oven. So may it possible to use hot air oven for functionalization?
If you go beyond 600K, you will start to etch nanotubes with oxygen. So, if you can't have vacuum, maybe you can fill the oven with argon or something like that?
Oh, OK. Can you say what kind of functionalization you are planning? Maybe someone can say whether air will cause parasitary processes for your special case.