OICC Press Journal of Nanostructure in Chemistry 2193-8865 9 3 (September 2019) 2019 08 13 Modified Sn-doped LaCrO3 nanostructures: focus on their characterization and applications as ethanol sensor at a lower temperature 10.1007/s40097-019-00314-z EN Vrushali Shyamrao Shinde 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 Chatur Pundalik Sawant 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 Kailas Haribhau Kapadnis 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 Journal Article 2019 08 13 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.