Low Temperature Nanocasting of Ultrafine Hematite Nanoparticles using Mesoporous Silica Molds
2012 (English)In: Powder Technology, ISSN 0032-5910, E-ISSN 1873-328X, Vol. 217, 269-273 p.Article in journal (Refereed) Published
Iron oxide (α-Fe2O3) nanoparticles with very small size, high crystallinity, and narrow size distribution were synthesized by infiltration of Fe(NO3)3.9H2O as an oxide precursor into mesoporous silica (SBA-15 and SBA-16) molds using a wetimpregnation technique. High resolution transmission electron microscopy shows that during the hydrothermal treatment of the precursor at 140 °C for 2 days, stable α-Fe2O3 nanoparticles inside the silica pores are formed. Subsequent leaching out of the silica template by NaOH resulted in well dispersed nanoparticles with an average diameter of ~ 4 nm.
Place, publisher, year, edition, pages
Elsevier, 2012. Vol. 217, 269-273 p.
α-Fe2O3, Nanoparticles, Nanocasting, Mesoporous silica, SBA-15, SBA-16
IdentifiersURN: urn:nbn:se:liu:diva-67915DOI: 10.1016/j.powtec.2011.10.037ISI: 000301159500034OAI: oai:DiVA.org:liu-67915DiVA: diva2:414217