Provider: Ingenta Connect Database: Ingenta Connect Content: application/x-research-info-systems TY - ABST AU - He, Quanguo AU - Huang, Chunyan AU - Wu, Zhaohui AU - Zhang, Jide TI - Hollow Magnetic Ferrites MFe2O4 (M = Fe, Mn, Co, Zn) Fabrication and Comparison by Using Double Ammonium Salts Orientation JO - Nanoscience and Nanotechnology Letters PY - 2012-06-01T00:00:00/// VL - 4 IS - 6 SP - 585 EP - 592 KW - HOLLOW MAGNETIC FERRITES KW - SOLVOTHERMAL ROUTE KW - AMMONIUM KW - MFE2O4 (M = FE, MN, CO, ZN) PARTICLES N2 - Hollow MFe2O4(M = Fe, Mn, Co, Zn) particles were synthesized via facile solvothermal route employing ammonium bicarbonate (NH4HCO3 and ammonium acetate (NH4Ac) as structureorientated reagents. Among the targeted ferrites, hollow Fe3O4 particles (MFe2O4, M = Fe) were formed by adding NH4HCO3 and NH4Ac, or by only one of them. However, the ferrite MFe2O4(M = Mn, Co, Zn) samples as-prepared with NH4HCO3 and NH4Ac presented two different morpholo- gies which distinguished from the hollow Fe3O4 particles under the same condition. Meanwhile, the monodisperse hollow MFe2O4 (M = Mn, Co, Zn) particles were obtained with NH4Ac, but that similar particles couldn't be obtained with NH4HCO3 only. The results prove that the NH4HCO3 is vital to the formation of hollow MFe2O4 (M = Mn, Co, Zn) particles, and both the concentration of NH4HCO3 and NH4Ac highly determined the composition and structure evolution (whether it is hollow or solid) of magnetic ferrites MFe2O4 (M = Fe, Mn, Co, Zn) particles. Also, a possible mechanism of ferrite hollow spheres formation and evolution is proposed and discussed. Such a reaction system of double ammonium salts orientation provides useful references for nanoscale hollow fabrication. UR - https://www.ingentaconnect.com/content/asp/nnl/2012/00000004/00000006/art00002 M3 - doi:10.1166/nnl.2012.1374 UR - https://doi.org/10.1166/nnl.2012.1374 ER -