Characterization and structural investigation of fractal porous-silica over an extremely wide scale range of pore size
2009 (English)In: Journal of Colloid and Interface Science, ISSN 0021-9797, E-ISSN 1095-7103, Vol. 336, no 1, 215-225 p.Article in journal (Refereed) Published
We have succeeded in creating Menger sponge-like fractal body, i.e., porous-silica samples with Menger sponge-like fractal geometries, by a novel template method utilizing template particles of alkylketene dimer (AKD) and a sol-gel synthesis of tetramethyl orthosilicate (TMOS). We report here the first experimental results on characterization and structural investigations of the fractal porous-silica samples prepared with various conditions such as calcination temperature and packing condition of the template particles. in order to characterize the fractal porous-silica samples, pore volume distribution, porosity and specific Surface area were measured over an extremely wide scale from*1 nm to 100 mu m by means of Mercury porosimetry, H-1 NMR cryoporometry, nitrogen gas adsorption experiments together with direct evaluations of cross-sectional fractal dimension D-cs, and size limits of D-cs. We have found that the pore volume distribution and specific surface area of the fractal porous-silica samples can be discussed in terms of different fractal porous Structures at different scale regions. Crown
Place, publisher, year, edition, pages
2009. Vol. 336, no 1, 215-225 p.
IdentifiersURN: urn:nbn:se:kth:diva-18496DOI: 10.1016/j.jcis.2009.03.087ISI: 000266845400030OAI: oai:DiVA.org:kth-18496DiVA: diva2:336543
QC 201005252010-08-052010-08-052011-02-03Bibliographically approved