volume-specific surface area (VSSA) for the implementation of the European Commission’s recommended definition of “nanomaterial”. In that paper, VSSA values were calculated for polydisperse particulate materials using a particle number-based averaging method which do not agree with earlier results of VSSA simulations of polydisperse materials reported in 2014 by the Joint Research Centre (JRC) of the European Commission (EC). In this contribution, we explain the difference between traditional view of VSSA which was used by the JRC and the proposed model of Lecloux. Through the use of some simple examples for polydisperse materials, it is demonstrated that the latter produces values which neither correspond to the generally accepted definition of VSSA nor relate to the commonly used experimental methods for determining VSSA using gas adsorption. Lecloux’s model therefore does not constitute a basis for practical implementation of the EC’s definition of nanomaterial using gas adsorption techniques.
I agree with others, use BET method for the determination of surface area. BET method is considered as a standard method for surface area measurements of nanoparticles. BET method uses Nitrogen gas, which forms a monolayer on the surface of the nanoparticles. Depending on the amount of nitrogen absorbed and desorbed, which changes with the samples porosity, the surface area is determined. Required amount of the sample is very less.
Thank you @Vijay Kumar for the paper u send. I agree with @ Alan F. Rawle but I want to calculate it through XRD data and Mercury porosimeter for cross-confirmation. If you have any idea or mathematical calculation by which I can calculate surface area it will be grateful.