244
S. Nahirniak et al.
decrease in the sensitivity of the modified 1D SnO 2 samples may be connected with
the fact that either the Ag acts as a trap for electrons or its optimal percentage lies
in a different range than investigated.
Thus, the best response to acetone among the investigated one-dimensional SnO 2
samples is observed for unmodified 1D SnO 2 .
14.3 Conclusions
The methods of synthesis of tin (IV) oxide powders and the comparison of
physical and chemical properties of the obtained powders were investigated. CVD
as the most rational and promising method for obtaining of SnO 2 powders of
nanometer dimensions was chosen. The conditions of directional synthesis of tin
(IV) oxide nanostructures of different morphologies were invented. The comparison
of different properties of 0D and 1D SnO 2 nanostructures is presented. It was shown
that morphology and modification have a significant influence on the nature of
current-voltage curves. For zero-dimensional SnO 2 samples, I-U curves are nonohmic at all temperatures, while one-dimensional SnO 2 structures are characterized
by linear current-voltage dependencies. The highest sensor response to acetone
showed unmodified one-dimensional tin (IV) oxide powder.
Acknowledgments The authors thank the National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute” for support in conducting this research.
References
1. Munnix S, Schmeits M (1982) Surface electronic structure of tin (IV) oxide. Solid State
Commun 43:867–873
2. Krivetskiy VV, Rumyantseva MN, Gaskov AM (2013) Chemical modification of nanocrystalline tin dioxide for selective gas sensors. Russ Chem Rev 82(10):917–941 [In Russian]
3. Bochenlov VE, Sergeev GB (2010) Sensitivity, selectivity and stability of gas-sensitive metaloxide nanostructures. In: Metal oxide nanostructures and their applications, vol 3. American
Scientific. Publishers, USA, pp 31–52
4. Nagirnyak SV, Dontsova TA (2015) Ways for improvement selectivity of semiconductor gas
sensors. Young Sci 10(25):15–17
5. Miller TA, Bakrania SD, Perez V, Wooldridge MS (2006) Nanostructured tin dioxide materials
for gas sensor applications. Funct Nanomater 30:1–24
6. Tournier G, Pijolat C, Lalauze R, Patissier B (1995) Selective detection of CO and CH 4 with
gas sensors using SnO 2 doped with palladium. Sensors Actuators 27:24–28
7. Wang S, Zhao Y, Huang J, Wang Y, Wu S et al (2006) Low-temperature carbon monooxide gas
sensors based gold/tin dioxide. Solid State Electron 50:1728–1731
8. Choi JK, Hwang IS, Kim SJ, Park JS, Park SS (2010) Design of selective gas sensors using
electrospun Pd-doped SnO 2 hollow nanofibers. Sensors Actuators 150:191–199
9. Schwarz JA (1995) Methods for preparation of catalytic materials. Chem Rev 95:477–510
S. Nahirniak et al.
decrease in the sensitivity of the modified 1D SnO 2 samples may be connected with
the fact that either the Ag acts as a trap for electrons or its optimal percentage lies
in a different range than investigated.
Thus, the best response to acetone among the investigated one-dimensional SnO 2
samples is observed for unmodified 1D SnO 2 .
14.3 Conclusions
The methods of synthesis of tin (IV) oxide powders and the comparison of
physical and chemical properties of the obtained powders were investigated. CVD
as the most rational and promising method for obtaining of SnO 2 powders of
nanometer dimensions was chosen. The conditions of directional synthesis of tin
(IV) oxide nanostructures of different morphologies were invented. The comparison
of different properties of 0D and 1D SnO 2 nanostructures is presented. It was shown
that morphology and modification have a significant influence on the nature of
current-voltage curves. For zero-dimensional SnO 2 samples, I-U curves are nonohmic at all temperatures, while one-dimensional SnO 2 structures are characterized
by linear current-voltage dependencies. The highest sensor response to acetone
showed unmodified one-dimensional tin (IV) oxide powder.
Acknowledgments The authors thank the National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute” for support in conducting this research.
References
1. Munnix S, Schmeits M (1982) Surface electronic structure of tin (IV) oxide. Solid State
Commun 43:867–873
2. Krivetskiy VV, Rumyantseva MN, Gaskov AM (2013) Chemical modification of nanocrystalline tin dioxide for selective gas sensors. Russ Chem Rev 82(10):917–941 [In Russian]
3. Bochenlov VE, Sergeev GB (2010) Sensitivity, selectivity and stability of gas-sensitive metaloxide nanostructures. In: Metal oxide nanostructures and their applications, vol 3. American
Scientific. Publishers, USA, pp 31–52
4. Nagirnyak SV, Dontsova TA (2015) Ways for improvement selectivity of semiconductor gas
sensors. Young Sci 10(25):15–17
5. Miller TA, Bakrania SD, Perez V, Wooldridge MS (2006) Nanostructured tin dioxide materials
for gas sensor applications. Funct Nanomater 30:1–24
6. Tournier G, Pijolat C, Lalauze R, Patissier B (1995) Selective detection of CO and CH 4 with
gas sensors using SnO 2 doped with palladium. Sensors Actuators 27:24–28
7. Wang S, Zhao Y, Huang J, Wang Y, Wu S et al (2006) Low-temperature carbon monooxide gas
sensors based gold/tin dioxide. Solid State Electron 50:1728–1731
8. Choi JK, Hwang IS, Kim SJ, Park JS, Park SS (2010) Design of selective gas sensors using
electrospun Pd-doped SnO 2 hollow nanofibers. Sensors Actuators 150:191–199
9. Schwarz JA (1995) Methods for preparation of catalytic materials. Chem Rev 95:477–510