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

doi:10.1016/j.matlet.2020.128814

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

Department of Chemical Engineering

Research output: Contribution to journal › Article › peer-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 language	English
Article number	128814
Journal	Materials Letters
Volume	283
DOIs	https://doi.org/10.1016/j.matlet.2020.128814
Publication status	Published - 2021 Jan 15

All Science Journal Classification (ASJC) codes

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

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@article{638f3d4c0a614d1f8eed96d4db411f14,

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

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.",

author = "G. Marimuthu and Nguyen, {Ba Son} and Pham, {Van Toan} and Nguyen, {Van Huy} and Tran, {Van Man} and Kundan Sivashanmugan and T. Pazhanivel",

note = "Funding Information: This work was financially supported by UGC, New Delhi, and Government of India through the project UGC-BSR Start-Up grant [No.F.30-319/2016(BSR)]. ",

year = "2021",

month = jan,

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doi = "10.1016/j.matlet.2020.128814",

language = "English",

volume = "283",

journal = "Materials Letters",

issn = "0167-577X",

publisher = "Elsevier",

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TY - JOUR

T1 - Novel NiCo2O4/MWCNTs nanocomposite with flake-like architecture as room temperature capacitive-type NH3 gas sensor

AU - Marimuthu, G.

AU - Nguyen, Ba Son

AU - Pham, Van Toan

AU - Nguyen, Van Huy

AU - Tran, Van Man

AU - Sivashanmugan, Kundan

AU - Pazhanivel, T.

N1 - Funding Information: This work was financially supported by UGC, New Delhi, and Government of India through the project UGC-BSR Start-Up grant [No.F.30-319/2016(BSR)].

PY - 2021/1/15

Y1 - 2021/1/15

N2 - 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.

AB - 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.

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