Porous Structure of Mesoporous Silica Studied by Positron Annihilation Lifetime Spectroscopy
In this paper, a series of mesoporous silica particles with different pore diameters were fabricated using tetraethyl orthosilicate (TEOS) as the network precursor, hexadecyl trimethyl ammonium bromide (CTAB) as a structure directing agent and 1,3,5-Trimethylbenzene (TMB) as a pore enlarge reagent. Compared with SAXRD and BET, the PALS may not only show the mesoporous information but also provide the structure information of microporous.
S. J. Wang, Z. Q. Chen, B. Wang and Y. C. Jean
Y. Xi et al., "Porous Structure of Mesoporous Silica Studied by Positron Annihilation Lifetime Spectroscopy", Materials Science Forum, Vol. 607, pp. 207-209, 2009