Rapid Synthesis of SBA-15 Rods with Variable Lengths, Widths, and Tunable Large Pores
2011 (English)In: Langmuir, ISSN 0743-7463, E-ISSN 1520-5827, Vol. 27, no 8, 4994-4999 p.Article in journal (Refereed) Published
Dispersed SBA-15 rods have been synthesized with varying lengths, widths, and pore sizes in a low-temperature synthesis in the presence of heptane and NH4F. The pore size of the material can systematically be varied between 11 and 17 nm using different hydrothermal treatment times And/or temperatures. The particle length (400-600 nm) and width (100-400 nm) were tuned by varying the HCl concentration. All the synthesized materials possess a large surface area of 400-600 m(2)/g And a pore volume of 1.05-1.30 cm(3). A, mechanism for the effect of the HCl concentration on the particle morphology is suggested. Furthermore, it is shown that the reaction time an be decreased to 1 h, with well-retained pore size and morphology. This work has resulted in SBA-15 rods with the largest pore size reported for this morphology.
Place, publisher, year, edition, pages
ACS American Chemical Society , 2011. Vol. 27, no 8, 4994-4999 p.
Engineering and Technology
IdentifiersURN: urn:nbn:se:liu:diva-67831DOI: 10.1021/la104864dISI: 000289321000091OAI: oai:DiVA.org:liu-67831DiVA: diva2:413599