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International Nano Letters

pp 1–4

First Online: 19 May 2017Received: 10 July 2016Accepted: 16 May 2017DOI: 10.1007-s40089-017-0210-6

Cite this article as: Nemade, K. & Waghuley, S. Int Nano Lett 2017. doi:10.1007-s40089-017-0210-6


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 NaO2 nanoparticles. NaO2 nanoparticles were prepared by a spray pyrolysis technique, under oxygen rich environment for gas sensing application. The texture characterizations show that as-obtained NaO2 nanoparticles have high structural purity. Most importantly, NaO2 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 NaO2 nanoparticles was discussed without the conventional oxygen bridging mechanism. Through this short communication, LPG sensing application of stable sodium superoxide nanoparticle is explored.

KeywordsNanoparticles Sodium superoxide Sensors 

Autor: Kailash Nemade - Sandeep Waghuley



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