Novel NiCo2O4/MWCNTs nanocomposite with flake-like architecture as room temperature capacitive-type NH3 gas sensor

G. Marimuthu, Ba Son Nguyen, Van Toan Pham, Van Huy Nguyen, Van Man Tran, Kundan Sivashanmugan, T. Pazhanivel

Research output: Contribution to journalArticlepeer-review

Abstract

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.

Original languageEnglish
Article number128814
JournalMaterials Letters
Volume283
DOIs
Publication statusPublished - 2021 Jan 15

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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