Electronic nose to detect hydrogen sulphide developed

  • IASbaba
  • April 16, 2021
  • 0
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Electronic nose to detect hydrogen sulphide developed

Part of: GS Prelims and GS – III – Sci & tech 

In news

  • An electronic nose with biodegradable polymer and monomer that can detect hydrogen sulphide (H2S) has been developed. 
  • Developed by : Scientists from the Centre for Nano and Soft Matter Sciences (CeNS), Bangalore, an autonomous institute of the DST

Key takeaways 

  • They have developed an exceptionally sensitive and selective H2S Gas sensor developed by impersonating the neuron responsible for identification of airborne molecules or olfactory receptor neuron (ORN).
  • The fabricated sensor consists of a heterostructure consisting of two layers –
  1. the top layer a monomer and is realized with a novel chemical tris (keto-hydrazone), which is both porous and contains H2S specific functional groups, and
  2. The bottom layer is the active channel layer which plays a key role in altering the current and mobility of charge carriers.

Do you know? 

  • Hydrogen sulphide is a poisonous, corrosive, and flammable gas produced from swamps and sewers.
  • H2S is the primary gas produced from the microbial breakdown of organic matter in the absence of oxygen. 
  • This necessitates easy detection of its emission from sewers and swamps

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