4th Edition of International Conference on

Materials Science and Engineering

March 13-15, 2023 | Online Event

Materials 2022

Shivani Dhall

Speaker at Materials Science and Engineering 2022 - Shivani Dhall
DAV College, India

Title : Role of candle carbon soot as gas sensing material


In recent years, the rapidly increment in industrial emissions, vehicle exhaust and open burning of garbage waste are the main cause of pollutants gases which regularly deteriorate the natural environmental conditions. The continuous monitoring of these pollutant gases (H2, CO & NOx) is necessary to prevent environmental deterioration. Various types of instruments and materials are available to monitor the pollutes and harmful gases. Among materials,  carbon materials are widely investigated because of they are enormously to these pollutants gases at room temperature conditions. In the present work, the cost-effective candle carbon soot (CCS) is used to detect 0.5% concentration of H2 gas at room temperature. A simple candle flame is used to synthesize the layers of carbon soot at room temperature conditions. The acid treatment of the CCS at room temperature was drastically improved their structural and sensing properties as compared to as-synthesized CCS. To the best of our knowledge, detection of low concentrations of H2 gas is reported here for the first time using economical CCS at room temperature. These results are important for developing a new class of chemiresistive type gas sensor based on change in the electronic properties of the CCS.

What will audience learn from your presentation?

  • How we synthesis candle carbon soot.
  • Fabrication of Candle carbon soot-based sensor.
  •  How we tested gas sensor.


Dr. Shivani Dhall has been working as an Assistant Professor in the Department of Physics, D.A.V. College,  Jalandhar, since July 2018. Previously, she worked as a NPDF in Department of Physics, IITD. During her PhD, she worked in CEN, Electrical Department, IIT Bombay. She got best INUP  project award from IIT Bombay in 2015. In 2018, she awarded with CSIR Nehru and DS Kothari Fellowships. In 2019, She received TARE project under DST for continue her research work. She is  working on carbon materials, nanoparticles and their device fabrication using lithography technique for gas sensing, photo-sensor and interconnected applications. She is reviewer of many SCI journals. She has 21 SCI Journals publications.