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Journal of Sol-Gel Science and Technology

, Volume 67, Issue 3, pp 545–555 | Cite as

Synthesis of mesoporous SnO2 nanomaterials with selective gas-sensing properties

  • Lei Li
  • Huiming Lin
  • Fengyu Qu
Original Paper

Abstract

Using SBA-15/KIT-5/KIT-6 as the hard templates, the mesoporous SnO2 nanomaterials with different structures were synthesized by nanocasting. X-ray diffraction, transmission electron microscopy, and nitrogen adsorption isotherms were used to testify their structure characteristics. These mesoporous SnO2 nanomaterials showed high specific surface areas (57–96 m2 g−1) and pore volume (0.17–0.27 cm3 g−1). The nanopore of these templates makes the nanosize particle of the final mesoporous SnO2 nanomaterials (4–9 nm) at last. The sensing properties of acetone, ethyl alcohol and methyl alcohol were investigated. The response of SnO2-15, SnO2-5, and SnO2-6 are 17.0, 19.5, and 16.1, respectively as the concentration of ethyl alcohol on 200 ppm. The sensitivity of SnO2-5 is 28.2 as the concentration of acetone was increased to 200 ppm. With the large surface area, high pore volume, and nanosized particles (close to 2 L = 6 nm of SnO2), the SnO2-5 show four fold enhancement in sensitivity compared to commercial SnO2 powder and low detection limit (even at 200 ppb). The surface area and particle size play a significant party in the gas response. With the large surface area and smallest particle size, SnO2-5 shows the highest sensitivity of all. These mesoporous nanomaterials show well potential application on the gas response.

Keywords

SnO2 Mesoporous Replicated synthesis Gas sensor 

Notes

Acknowledgments

Financial support for this study was provided by the National Natural Science Foundation of China (21171045, 21101046), Natural Science Foundation of Heilongjiang Province of China ZD201214, Program for Scientific and Technological Innovation team Construction in Universities of Heilongjiang province (2011TD010), Doctoral Initiation Fund of Harbin Normal University (20102329110002), Foundation of Harbin Educational Committee (12521164).

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Copyright information

© Springer Science+Business Media New York 2013

Authors and Affiliations

  1. 1.Key Laboratory of Photonic and Electronic Band Gap Materials, Ministry of Education, College of Chemistry and Chemical EngineeringHarbin Normal UniversityHarbinPeople’s Republic of China

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