4.7 Article

Porous SnO2 nanoflowers derived from tin sulfide precursors as high performance gas sensors

Journal

CRYSTENGCOMM
Volume 14, Issue 20, Pages 6654-6658

Publisher

ROYAL SOC CHEMISTRY
DOI: 10.1039/c2ce25089f

Keywords

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Funding

  1. National Natural Science Foundation [21001046, 51002059]
  2. 973 Program of China [2011CB933300, 2011CBA00703]
  3. Program of New Century Excellent Talents of the University in China [NCET-11-0179]
  4. Research Fund for the Doctoral Program of Higher Education [20090142120059, 20100142120053]
  5. WNLO

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SnO2 has been confirmed to be a potential sensor to many toxic volatile gases. We report here the synthesis of porous SnO2 nanoflowers by in situ oxidization of SnS and SnS2 precursors with similar morphologies. The as-synthesized SnO2 products were characterized by FESEM, XRD, TEM, UV-vis spectrometry, fluorescence spectrometry and the nitrogen adsorption-desorption technique. Configured as resistor-type chemical sensors, the as-synthesized SnO2 products exhibited excellent sensitivity and fast response/recovery times towards different gases including ethanol, methanol, methanal and acetone. After Pt nanoparticles were loaded, their sensing properties were dramatically increased, indicating their promising applications in detecting toxic volatile organic materials.

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