Results 161 to 170 of about 97,949 (204)

EPR study of nanocrystalline tin dioxide

physica status solidi c, 2010
AbstractWe have detected that O2‐ and OH• radicals are the main type of spin centers in nanocrystalline tin dioxide. Their integral concentrations increase proportionally to a growth of specific surface in the investigated samples. Concentration of OH• radicals increases after sample treatment in water vapour.
E. A. Konstantinova, I. S. Pentegov, A. V. Marikutsa, M. N. Rumyantseva, A. M. Gaskov, P. K. Kashkarov   +5 more
openaire   +1 more source

Acetone Sensor Made of Tin Dioxide

Journal of Contemporary Physics (Armenian Academy of Sciences), 2020
Results of investigations of metal oxide chemical sensors for the detection of acetone made of tin dioxide were discussed in this review paper. There are several possibilities and technologies to manufacture of such sensors. Pure (without impurities) SnO2 and other metal oxide have low sensitivity to gases at its rather high pre-heating (operation ...
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Formation of tin dioxide pore structure

Reaction Kinetics and Catalysis Letters, 1998
Formation of tin dioxide pore structure has been studied under various hydrogel precipitation conditions. Desired volumes of micro-and mesopores can be obtained when the pH and precipitation temperature are controlled. A relationship between the initial salt hydrolysis rate and the oxide phase nucleation rate appears to be of key importance ...
V. Yu. Gavrilov, G. A. Zenkovets
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SPEEK‐Tin dioxide proton conducting membranes: Effect of modifying agent of tin dioxide particles surface

Journal of Applied Polymer Science, 2020
AbstractProton‐conducting membranes based on sulphonated poly (ether ether ketone) (SPEEK) polymer matrix and tin dioxide have been synthesized. Their local structure has been studied by FTIR and XRD whereas their structural features at nanometer scale has been investigated by Small‐Angle X‐ray Scattering (SAXS) and transmission electron microscopy ...
Liz Contino Vianna de Aguiar, Florêncio Gomes de Ramos Filho, Karim Dahmouche, Gerônimo Perez, Braulio Soares Archanjo, Carla Akimi Kawaguti, Ailton de Souza Gomes   +6 more
openaire   +1 more source

Electrical Properties of Tin Dioxide Two-Dimensional Nanostructures

The Journal of Physical Chemistry B, 2004
Tin dioxide is the most used material for gas sensing because its three-dimensional nanostructures and properties are related to the large surface exposed to gas adsorption. We propose the use of a two-dimensional nanostructure of SnO2 in the form of nanobelts; such newly achieved layers have been found to exhibit electrical properties that are similar
COMINI E, GUIDI, Vincenzo, MALAGU', Cesare, MARTINELLI, Giuliano, PAN Z, SBERVEGLIERI G, WANG ZL   +6 more
openaire   +3 more sources

Photoluminescence and Raman studies on tin dioxide powder and tin dioxide/single‐walled carbon‐nanotube composites

physica status solidi (b), 2010
AbstractPhotoluminescence (PL) and Raman spectroscopy were used to characterize the tin dioxide (SnO2) powder and the SnO2/single‐walled carbon‐nanotube (SWCNT) composites. The SnO2 powder shows a strong PL broad band centered at 1.95 eV (635 nm) under excitation at 280 nm (4.43 eV) and four PL bands peaking at: 1.95 eV (635 nm), 2.67 eV (464 nm), 2.82 
I. I. Gontia, M. Baibarac, I. Baltog
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Glassy Behavior of a Tin Dioxide Nanoparticle Suspension

Langmuir, 2015
Dilute suspensions of charged colloidal particles with a short-range attraction and long-range repulsion can exhibit a variety of arrested states. In many applications using suspensions of charged nanoparticles, the optimization of the process requires the understanding of the mechanism underlying the stability and the rheological properties of the ...
Atsumi, Wakabayashi, Tatsuhiko, Goto, Toshiaki, Dobashi, Yasuyuki, Maki   +3 more
openaire   +2 more sources

Electronic structure and dielectric properties calculations of pure tin dioxide and of vacancies in tin dioxide

AIP Conference Proceedings, 2010
In this work we report the results of ab initio electronic structure calculations for pure SnO2 as well as for some defects, such as the oxygen vacancy and the interstitial tin impurity, and for the In and Sb as substitutional impurities in a configuration which corresponds to a concentration of 4.2%. We also show results for related optical properties
P. D. Borges, L. M. R. Scolfaro, H. W. Leite Alves, E. F. da Silva, Marília Caldas, Nelson Studart   +5 more
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New Hydrolytic Process for Producing Zirconium Dioxide, Tin Dioxide, and Titanium Dioxide Nanoparticles

Journal of the American Ceramic Society, 2002
Nanocrystalline ZrO 2 , SnO 2 , and TiO 2 were synthesized through a simple hydrolytic process based on the etherification of alcohols.
Zhao‐Xiang Deng, Cheng Wang, Ya‐Dong Li   +2 more
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Laser-deposited tin dioxide and tin acetylacetonate layers for gas sensors

Journal of Materials Science: Materials in Electronics, 2000
Thin active layers were deposited by the pulsed laser deposition (PLD) method from tin dioxide and tin acetylacetonate targets. The deposition was carried out employing an excimer KrF laser. The structure and parameters of the deposited layers were studied in connection with gas sensor applications.
F. Vysloužil, V. Myslík, M. Vrňata, M. Jeli´nek, J. Zemek   +4 more
openaire   +1 more source