Chemically Modified NiO Gas Sensor for Environmental Monitoring

Yun Jin Jeong, Chandran Balamurugan, Dong Weon Lee

Abstract

In this work, we report semiconducting nanocrystalline NiO and Pd-doped NiO sensor with high sensitivity and excellent selectivity for H2S gas. These nanomaterials were synthesized by the solution based technique. Related structural and electrical properties of doped and pure NiO thick films were studied used to XRD, XPS, SEM, EDX, BET/BJH and impedance technique. The gas sensing characteristics of pure NiO and Pd-doped NiO were compared using a homemade gas sensing measurement system. The sensitivity, operating temperature, and response/recovery time were systematically investigated based on the change in electrical resistance of the materials in the presence of reduced gas (H2S, CO, LPG and ethanol) environment. Experimental results confirmed that gas sensitivity was enhanced by doping different concentration of Pd in NiO thick films. The 5 wt% Pd doped NiO thick film sensor showed a maximum response to 20 ppm H2S (93%) at an operating temperature of 60 °C.

References

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Paper Citation


in Harvard Style

Jeong Y., Balamurugan C. and Lee D. (2016). Chemically Modified NiO Gas Sensor for Environmental Monitoring . In Proceedings of the 9th International Joint Conference on Biomedical Engineering Systems and Technologies - Volume 1: BIODEVICES, (BIOSTEC 2016) ISBN 978-989-758-170-0, pages 176-178. DOI: 10.5220/0005700801760178


in Bibtex Style

@conference{biodevices16,
author={Yun Jin Jeong and Chandran Balamurugan and Dong Weon Lee},
title={Chemically Modified NiO Gas Sensor for Environmental Monitoring},
booktitle={Proceedings of the 9th International Joint Conference on Biomedical Engineering Systems and Technologies - Volume 1: BIODEVICES, (BIOSTEC 2016)},
year={2016},
pages={176-178},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0005700801760178},
isbn={978-989-758-170-0},
}


in EndNote Style

TY - CONF
JO - Proceedings of the 9th International Joint Conference on Biomedical Engineering Systems and Technologies - Volume 1: BIODEVICES, (BIOSTEC 2016)
TI - Chemically Modified NiO Gas Sensor for Environmental Monitoring
SN - 978-989-758-170-0
AU - Jeong Y.
AU - Balamurugan C.
AU - Lee D.
PY - 2016
SP - 176
EP - 178
DO - 10.5220/0005700801760178