Synthesis of hollow silica spheres SBA-16 with large-pore diameter
2011 (English)In: Materials letters (General ed.), ISSN 0167-577X, E-ISSN 1873-4979, Vol. 65, no 7, 1066-1068 p.Article in journal (Refereed) Published
Hollow silica SBA-16 spheres with cubic ordered mesoporous shells were synthesized by an emulsion-templating method, using Pluronic F127 as a structure-directing agent. tetraethyl orthosilicateas as a silica source and heptane as a cosolvent in the presence of NH4F. The size of these spheres is in the range of 10 to 30 mu m. The shell is about 700 nm thick and consists of large pores, similar to 9 nm in diameter, arranged in a cubic order. After calcination, the spheres maintain their mesoporosity and show a high surface area of 822 m(2)/g. The formation mechanism of the silica hollow spheres is discussed.
Place, publisher, year, edition, pages
Elsevier Science B.V., Amsterdam. , 2011. Vol. 65, no 7, 1066-1068 p.
Mesoporous silica, SBA-16, Hollow spheres, Large pore, F127
Engineering and Technology
IdentifiersURN: urn:nbn:se:liu:diva-67554DOI: 10.1016/j.matlet.2011.01.035ISI: 000289021700002OAI: oai:DiVA.org:liu-67554DiVA: diva2:411251