OICC Press International Nano Letters 2228-5326 7 3 (September 2017) 2017 05 19 Novel synthesis approach for stable sodium superoxide (NaO2) nanoparticles for LPG sensing application 10.1007/s40089-017-0210-6 EN Kailash Nemade Department of Physics, Indira Mahavidyalaya, Kalamb, 445 401, IN Sandeep Waghuley Department of Physics, Sant Gadge Baba Amravati University, Amravati, 444 602, IN Journal Article 2017 05 19 Abstract The synthesis of stable superoxide is still great challenge for the researchers working in the field of materials science. Through this letter, we report the novel and simple synthesis approach for the preparation of stable sodium superoxide (NaO 2 ) nanoparticles. NaO 2 nanoparticles were prepared by a spray pyrolysis technique, under oxygen rich environment for gas sensing application. The texture characterizations show that as-obtained NaO 2 nanoparticles have high structural purity. Most importantly, NaO 2 nanoparticles exhibits higher sensing response, shorter response time and recovery time, low operating temperature and good stability during sensing of liquefied petroleum gas (LPG). The main accomplishment of present work is that as-fabricated sensor has low operating temperature (423 K), which is below auto-ignition temperature of LPG. The gas sensing mechanism of NaO 2 nanoparticles was discussed without the conventional oxygen bridging mechanism. Through this short communication, LPG sensing application of stable sodium superoxide nanoparticle is explored.