Research output: Contribution to journal › Article › peer-review
Interface-Assisted Synthesis of the Mn3-xFexO4 Gradient Film with Multifunctional Properties. / Gulina, Larisa B.; Gurenko, Vladislav E.; Tolstoy, Valeri P.; Mikhailovskii, Vladimir Yu; Koroleva, Alexandra V.
In: Langmuir, Vol. 35, No. 47, 26.11.2019, p. 14983-14989.Research output: Contribution to journal › Article › peer-review
}
TY - JOUR
T1 - Interface-Assisted Synthesis of the Mn3-xFexO4 Gradient Film with Multifunctional Properties
AU - Gulina, Larisa B.
AU - Gurenko, Vladislav E.
AU - Tolstoy, Valeri P.
AU - Mikhailovskii, Vladimir Yu
AU - Koroleva, Alexandra V.
PY - 2019/11/26
Y1 - 2019/11/26
N2 - Anisotropic gradient materials are considered as promising and novel in that they have numerous functional properties and are able to transform into hierarchical microstructures. We report a facile method of gradient inorganic thin film synthesis through diffusion-controlled deposition at the gas-solution interface. To investigate the reaction of interfacial phase boundary controllable hydrolysis by gaseous ammonium, an aqueous solution of FeCl3 and MnCl2 was chosen, as the precipitation pH values for the hydroxides of these metals differ gradually. As a result of synthesis using the gas-solution interface technique (GSIT), a thin film is formed on the surface of the solution that consists of Mn2+(Fe,Mn)2 3+O4 nanoparticles with hausmannite crystal structure. The ratio between iron and manganese in the film can be adjusted over a wide range by varying the synthetic procedure. Specific conditions are determined that allow the formation of a Mn-Fe mixed oxide film with a gradient of composition, morphology, and properties, as well as its further transformation into microscrolls with a diameter of 10-20 μm and a length of up to 300 μm, showing weak superparamagnetic properties. The technique reported provides a new interfacial route for the development of functional gradient materials with tubular morphology.
AB - Anisotropic gradient materials are considered as promising and novel in that they have numerous functional properties and are able to transform into hierarchical microstructures. We report a facile method of gradient inorganic thin film synthesis through diffusion-controlled deposition at the gas-solution interface. To investigate the reaction of interfacial phase boundary controllable hydrolysis by gaseous ammonium, an aqueous solution of FeCl3 and MnCl2 was chosen, as the precipitation pH values for the hydroxides of these metals differ gradually. As a result of synthesis using the gas-solution interface technique (GSIT), a thin film is formed on the surface of the solution that consists of Mn2+(Fe,Mn)2 3+O4 nanoparticles with hausmannite crystal structure. The ratio between iron and manganese in the film can be adjusted over a wide range by varying the synthetic procedure. Specific conditions are determined that allow the formation of a Mn-Fe mixed oxide film with a gradient of composition, morphology, and properties, as well as its further transformation into microscrolls with a diameter of 10-20 μm and a length of up to 300 μm, showing weak superparamagnetic properties. The technique reported provides a new interfacial route for the development of functional gradient materials with tubular morphology.
KW - MAGNETIC-PROPERTIES
KW - FACILE SYNTHESIS
KW - JANUS
KW - NANOPARTICLES
KW - PARTICLES
KW - MN3O4
KW - IRON
KW - SURFACE
KW - CO
KW - HAUSMANNITE
UR - http://www.scopus.com/inward/record.url?scp=85075546231&partnerID=8YFLogxK
U2 - 10.1021/acs.langmuir.9b02338
DO - 10.1021/acs.langmuir.9b02338
M3 - Article
C2 - 31702162
AN - SCOPUS:85075546231
VL - 35
SP - 14983
EP - 14989
JO - Langmuir
JF - Langmuir
SN - 0743-7463
IS - 47
ER -
ID: 49772850