Ultra thin NiO nanosheets for high performance hydrogen gas sensor device

Umesh T. Nakate; Rafiq Ahmad; Pramila Patil; Y. T. Yu; Yoon Bong Hahn

doi:10.1016/j.apsusc.2019.144971

Ultra thin NiO nanosheets for high performance hydrogen gas sensor device

Umesh T. Nakate
, Rafiq Ahmad
, Pramila Patil
, Y. T. Yu
, Yoon Bong Hahn^*

^*Corresponding author for this work

Information Materials Engineering

Jeonbuk National University
Jamia Millia Islamia
Defence Research and Development Organisation India

Research output: Contribution to journal › Journal article › peer-review

191 Scopus citations

Abstract

Unstacked two dimensional (2-D) NiO nanosheets are synthesized via easy surfactant-free hydrothermal chemical route. NiO sensor is investigated for high performance and selective hydrogen (H₂) gas sensing properties. Structural analysis is carried out using XRD pattern. The morphology of NiO is confirmed by using FESEM and TEM micrographs. Atomic state and elemental composition are analyzed by recording XPS and EDS spectra respectively. NiO sensor exhibited a high gas response of 191% for 150 ppm H₂ concentration at 250 °C operating temperature with response time 150 s. The lowest H₂ detection is observed at the concentration of 10 ppm having the gas response of 22%. The H₂ response of NiO sensor was tested at different operating temperatures as well as gas concentrations. The dynamic gas response and sensor stability were recorded and analyzed. The sensing mechanism of NiO sensor was discussed.

Original language	English
Article number	144971
Journal	Applied Surface Science
Volume	506
DOIs	https://doi.org/10.1016/j.apsusc.2019.144971
State	Published - 2020.03.15

Keywords

Gas sensor
High response
Hydrogen
Nanosheets
NiO
XRD

Quacquarelli Symonds(QS) Subject Topics

Materials Science
Physics & Astronomy

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10.1016/j.apsusc.2019.144971

Cite this

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title = "Ultra thin NiO nanosheets for high performance hydrogen gas sensor device",

abstract = "Unstacked two dimensional (2-D) NiO nanosheets are synthesized via easy surfactant-free hydrothermal chemical route. NiO sensor is investigated for high performance and selective hydrogen (H2) gas sensing properties. Structural analysis is carried out using XRD pattern. The morphology of NiO is confirmed by using FESEM and TEM micrographs. Atomic state and elemental composition are analyzed by recording XPS and EDS spectra respectively. NiO sensor exhibited a high gas response of 191\% for 150 ppm H2 concentration at 250 °C operating temperature with response time 150 s. The lowest H2 detection is observed at the concentration of 10 ppm having the gas response of 22\%. The H2 response of NiO sensor was tested at different operating temperatures as well as gas concentrations. The dynamic gas response and sensor stability were recorded and analyzed. The sensing mechanism of NiO sensor was discussed.",

keywords = "Gas sensor, High response, Hydrogen, Nanosheets, NiO, XRD",

author = "Nakate, \{Umesh T.\} and Rafiq Ahmad and Pramila Patil and Yu, \{Y. T.\} and Hahn, \{Yoon Bong\}",

note = "Publisher Copyright: {\textcopyright} 2019 Elsevier B.V.",

year = "2020",

month = mar,

day = "15",

doi = "10.1016/j.apsusc.2019.144971",

language = "English",

volume = "506",

journal = "Applied Surface Science",

issn = "0169-4332",

}

TY - JOUR

T1 - Ultra thin NiO nanosheets for high performance hydrogen gas sensor device

AU - Nakate, Umesh T.

AU - Ahmad, Rafiq

AU - Patil, Pramila

AU - Yu, Y. T.

AU - Hahn, Yoon Bong

PY - 2020/3/15

Y1 - 2020/3/15

N2 - Unstacked two dimensional (2-D) NiO nanosheets are synthesized via easy surfactant-free hydrothermal chemical route. NiO sensor is investigated for high performance and selective hydrogen (H2) gas sensing properties. Structural analysis is carried out using XRD pattern. The morphology of NiO is confirmed by using FESEM and TEM micrographs. Atomic state and elemental composition are analyzed by recording XPS and EDS spectra respectively. NiO sensor exhibited a high gas response of 191% for 150 ppm H2 concentration at 250 °C operating temperature with response time 150 s. The lowest H2 detection is observed at the concentration of 10 ppm having the gas response of 22%. The H2 response of NiO sensor was tested at different operating temperatures as well as gas concentrations. The dynamic gas response and sensor stability were recorded and analyzed. The sensing mechanism of NiO sensor was discussed.

AB - Unstacked two dimensional (2-D) NiO nanosheets are synthesized via easy surfactant-free hydrothermal chemical route. NiO sensor is investigated for high performance and selective hydrogen (H2) gas sensing properties. Structural analysis is carried out using XRD pattern. The morphology of NiO is confirmed by using FESEM and TEM micrographs. Atomic state and elemental composition are analyzed by recording XPS and EDS spectra respectively. NiO sensor exhibited a high gas response of 191% for 150 ppm H2 concentration at 250 °C operating temperature with response time 150 s. The lowest H2 detection is observed at the concentration of 10 ppm having the gas response of 22%. The H2 response of NiO sensor was tested at different operating temperatures as well as gas concentrations. The dynamic gas response and sensor stability were recorded and analyzed. The sensing mechanism of NiO sensor was discussed.

KW - Gas sensor

KW - High response

KW - Hydrogen

KW - Nanosheets

KW - NiO

KW - XRD

UR - https://www.scopus.com/pages/publications/85076497550

U2 - 10.1016/j.apsusc.2019.144971

DO - 10.1016/j.apsusc.2019.144971

M3 - Journal article

AN - SCOPUS:85076497550

SN - 0169-4332

VL - 506

JO - Applied Surface Science

JF - Applied Surface Science

M1 - 144971

ER -

Ultra thin NiO nanosheets for high performance hydrogen gas sensor device

Abstract

Keywords

Quacquarelli Symonds(QS) Subject Topics

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