Journal
MATERIALS LETTERS
Volume 283, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.matlet.2020.128814
Keywords
Spinel metal oxides; Multi-walled carbon nanotubes (MWCNTs); Nanomaterials; Ammonia (NH3); Sensors
Funding
- Government of India through the project UGC-BSR Start-Up grant [F.30-319/2016(BSR)]
- UGC, New Delhi
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The study introduced a simple and inexpensive hydrothermal method to prepare a NiCo2O4/MWCNTs sensor, which showed the highest capacitance at 10 kHz and exhibited excellent sensitivity for NH3 gas detection at room temperature.
In this study, a facile hydrothermal method, which was employed as a simple and inexpensive technique, was proposed to prepare flake-like NiCo2O4/multi-walled carbon nanotubes (MWCNTs) sensor. The direct current signal measurements were performed at a frequency of 10-100 kHz at room temperature. NiCo2O4 (7.46 pF) and NiCo2O4/MWCNTs (24.75 pF) were observed to have the highest capacitances at 10 kHz. Our results showed that the NiCo2O4/MWCNTs nanocomposite-based sensor potentially exhibited excellent sensitivity for the detection of ammonia (NH3) gas room temperature. (C) 2020 Elsevier B.V. All rights reserved.
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