- the attached graph is the isotherm curve of three materials obtained through BET. Also it would be helpful if the nature of porosity of the materials can be commented on.
- Thank you
This article my help you
https://www.sciencedirect.com/science/article/abs/pii/S0927775701006124
HelloDear Namit Dey ,
It is plaussible that your isotherms (because have a desorption way) can be a combination of a IV-V isotherms, which are typicals for mesoporous and microporous material.
It could pay attention to the lower adsorption at lower P/Po, which could be associated to weak substrate adsorption.
If you have a doubt, please contact me.
With kind regards,
Ed Schz. Patinök
I would say nonporous materials, with hysteresis due to agregated powder particles. As mentioned by Julián E. Sánchez-Velandia it doesn't seems to me that your material has a strong interaction with the gas adsorbed. However I must ask you: how much of sample did you use? Remind to estimate something around 20 m²/g of the material.
It also seems to me that your material was not pure, maybe there was some organic matter or residual water/volatiles adsorbed as you still have a small hysteresis on P/P0 under 0.3.
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