10.1007/s40097-019-00314-z

Modified Sn-doped LaCrO3 nanostructures: focus on their characterization and applications as ethanol sensor at a lower temperature

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  • Vrushali Shyamrao Shinde*1,
  • Chatur Pundalik Sawant1,
  • Kailas Haribhau Kapadnis2,
  1. Research Centre in Chemistry and PG Department of Chemistry, Gajmal Tulshiram Patil Arts, Science, and Commerce College Nandurbar, Affiliated to Kavayitri Bahinabai Chaudhari North Maharashtra University, Jalgaon, Mh-425412, IN
  2. Research Centre in Chemistry and PG Department of Chemistry, Loknete Vyankatrao Hiray Arts, Science, and Commerce College Panchavati, Nashik, Affiliated to SPPU, Pune, Mh-422003, IN
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Published in Issue 13-08-2019

How to Cite

Shinde, V. S., Sawant, C. P., & Kapadnis, K. H. (2019). Modified Sn-doped LaCrO3 nanostructures: focus on their characterization and applications as ethanol sensor at a lower temperature. Journal of Nanostructure in Chemistry, 9(3 (September 2019). https://doi.org/10.1007/s40097-019-00314-z
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Abstract

Abstract The present work emphasizes the effect of the use of Sn, with different concentrations, over the structural properties and sensing applications of LaCrO 3 . In this work, LaCrO 3 nanostructures were modified with different concentration of Sn (0.2 M %, 0.4 M %, 0.6 M % and 0.8 M  %).Different modified Sn-doped LaCrO 3 was synthesized by sol–gel method and followed by preparation of thick films via a conventional screen printing approach. The characterizations done by means of X-ray diffraction (XRD), energy-dispersive X-ray (EDX), scanning electron microscopy (SEM) and transmission electron microscopy (TEM) revealed the confirmation of a Sn-doped LaCrO 3 crystal structure and its morphology, respectively. These oxides were formulated to identify various air pollutants such as CO 2 , ethanol, H 2 S, NH 3 , NO 2, and acetone. The Sn-doped LaCrO3 with 0.4 M % Sn displayed higher gas response to ethanol vapor at the range of 150–250 °C. The sensors additionally demonstrated proper recovery and acceptable stability. Graphic abstract The graphical abstract demonstrates the in situ synthesis of Sn-doped LaCrO 3 by sol–gel method. Similarly, it shows its characterization and finally, the thick films of doped Sn demonstrate best selectivity for ethanol.

Keywords

  • Sol–gel method,
  • Sn-doped LaCrO3 nanostructure,
  • XRD,
  • SEM,
  • EDS,
  • TEM,
  • IR,
  • Ethanol,
  • Reproducibility and response–recovery
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