Development of Yttrium-Cerium oxide gas sensor for low ppm Hydrogen detection

Published: 15 November 2023 by MDPI in The 4th International Electronic Conference on Applied Sciences session Nanosciences, Chemistry and Materials Science

https://doi.org/10.3390/ASEC2023-16265

Abstract:

In the present study, a new hydrogen (H₂) gas sensor that is CeO₂/Y₂O₃ nanocomposites were effectively synthesized by using hydrothermal technique. XRD, FE-SEM, AFM were performed for knowing the crystal structure and morphology of as prepared nanocomposite. Here, XRD pattern of CeO₂/Y₂O₃ shows the Cubic structure of space group Fm3m having density 6.74gmcm^-3, volume 157.81×10⁶pm³, crystallite size 18.66nm and lattice strain is 0.0041 after that many more structural parameters were also calculated by using Rietveld refinement. Furthermore, FE-SEM and AFM studies show the granular structure and surface roughness. Additionally, Hydrogen sensing was performed at temperature of 100-125˚C with hydrogen concentration of 20-100 ppm and obtained 3.76 sensor response with relatively response and recovery time of 55.9 and 75.23 sec respectively. The studied sensor device also exhibits the advantages of a simple structure, easy fabrication process, and relatively low- cost hydrogen detection sensor.

Keywords: Cerium oxide; Yttrium oxide; Nanocomposite; Refinement; H2 Gas Sensing,

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Comments on this paper

David Griego

4 December 2023

This research is useful. The development of yttrium-cerium oxide (YCeO) gas sensors for low parts per million (ppm) hydrogen detection involves utilizing the unique properties of YCeO materials to achieve high sensitivity and selectivity towards hydrogen gas. YCeO-based gas sensors have gained attention due to their excellent performance, stability, and potential for low-cost fabrication. Thanks for sharing it .

Shivangi Srivastava

4 December 2023

Thank you so much for your valuable support ànd your auspicious time for reading this paper.

Larry Greer

5 December 2023

I'm glad when hearing that. I think the YCeO sensing material needs to be synthesized with controlled composition and crystal structure to achieve high sensitivity and selectivity towards hydrogen. Various synthesis methods, including sol-gel, co-precipitation, and hydrothermal techniques, can be employed to obtain YCeO nanoparticles or thin films. The material parameters, such as grain size, surface area, rainbow friends, and crystallinity, can be optimized through different processing conditions to enhance the sensor performance. Moreover, the YCeO sensing material can be integrated into a sensor device using different techniques, such as screen printing, inkjet printing, or deposition methods like sputtering or chemical vapor deposition. The sensor design should ensure a high surface-to-volume ratio to maximize the interaction between the gas and the sensing material, thus improving sensitivity.

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