Application of ferrites in gas
sensors .
The principal advantage of
ferrite as compared to conventional sensor based on semiconductor
materials of metal oxides is the ability to adjust their band structure
, the nature of the active sites on the surface , changing the cation
composition . The main conclusion of the published work to date is the
discovery of the high sensitivity of the functional properties of iron
cation composition and microstructure : crystallite size and pore
specific surface area materials.
In our laboratory, conducting research systems mixed ferrites . Samples
were synthesized on a specially designed installation spray pyrolysis
Pyrola v1.2 based aerosol generator Albedo IN- 7. This provides a
one-step method of synthesis of a specific surface area of 150 m2 / g
and a high yield of the desired product.
Main
directions :
- Mixed ferrites of
nickel, zinc, cobalt , copper and other 3d- metals
- The impact of the
iron content on the properties of ferrites
- The creation of
materials for the sensor layer gas sensors
Projects
RFFR 09-03-00250_a: "Synthesis of nanocrystalline ferrites 3d elements
and their reactivity in the interaction with the gas phase"
Publications:
- Microstructure
and Gas-Sensing Properties of Nanocrystalline NiFe2O4
Prepared by Spray Pyrolysis Kazin A.P., Rumyantseva
M.N., Prusakov
V.E., Suzdalev
I.P., Maksimov
Yu V., Imshennik
V.K., Novochikhin
S.V., Gaskov
A.M. в журнале Inorganic
Materials, издательство Maik
Nauka/Interperiodica Publishing (Russian
Federation), том 46, ? 11,
с. 1254-1259 DOI
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