2024-03-28T18:10:51Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/174432010-03-25T23:00:00Zcom_10261_78com_10261_3col_10261_331
Chinarro Martín, Eva
Moreno Burriel, Berta
Jurado Egea, José Ramón
2009-10-05T11:50:58Z
2009-10-05T11:50:58Z
2007
Journal of the European Ceramic Society 27 (2007) 3601–3604
http://hdl.handle.net/10261/17443
10.1016/j.jeurceramsoc.2007.02.011
TiO2 is an insulator, but using specific dopants, can modify sharply its electronic structure towards semiconducting behavior. This type of response
is widely applied in many electrochemical and electrocatalytical devices, namely chlorine production, hydrocarbon oxidation, CO and CO2
hydrogenation and as electroactive substrata for biological cell growth.
Combustion synthesis is a very simple, rapid and clean method for material preparation, which will be used in the preparation of the
(1−x)TiO2–xSnO2, x = 0.05–0.3. Tin oxalate and titanium isopropoxide are used as precursors for the synthesis. The as-prepared powders are
fine and homogeneous, the average particle size is in the range of 5–10 nm, powders and ceramic compact bodies are characterized by DRX,
SEM–TEM–EDX, DTA–TG and EIS. The impedance spectroscopy of the sample 10 mol% of SnO2 indicates the presence of several phases which
promote a matrix composite based in an electrical TiO2 insulator compatible with an electronic conducting phase tin rich. This could be attributed
to the spinodal decomposition effect observed in TiO2–SnO2 system.
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Powders-chemical preparation
Electrical conductivity
Combustion synthesis and EIS characterization of TiO2–SnO2 system
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