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Ni-doped (MoO3/MoS2) heterostructure chemiresistive sensor for dual selective detection of NH3 and NOx at room temperature.

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Title: Ni-doped (MoO3/MoS2) heterostructure chemiresistive sensor for dual selective detection of NH3 and NOx at room temperature.
Authors: Muthumalai, K.1,2 (AUTHOR), Manoharan, Mathankumar1 (AUTHOR), Govindharaj, Kamaraj1 (AUTHOR), Saravanan, Poovarasan1 (AUTHOR), Haldorai, Yuvaraj3,4 (AUTHOR), Sofer, Zdeněk2 (AUTHOR), Rajendra Kumar, Ramasamy Thangavelu1 (AUTHOR) rtrkumar@buc.edu.in
Source: Ceramics International. Jan2025, Vol. 51 Issue 1, p1017-1024. 8p.
Subjects: Field emission electron microscopy, X-ray photoelectron spectroscopy, Gas detectors, Transmission electron microscopy, Transition metals
Abstract: The transition metal dichalcogenide heterostructures are emerging as promising candidates for room-temperature gas sensors. This work presents a Ni-doped (MoO 3 /MoS 2) heterostructure, synthesized via hydrothermal methods with varying Ni concentrations, for the dual selective detection of NH 3 and NO x gases. The electronic sensitization of Ni improves the sensitivity of heterostructure. The heterostructure was characterized by using X-ray diffractometer, field emission scanning electron microscopy (FESEM), and transmission electron microscopy (TEM), with Ni incorporation confirmed by X-ray photoelectron spectroscopy (XPS). The 10 % Ni-doped MoO 3 /MoS 2 heterostructure showed high sensitivity, achieving responses of 15 % and 18.3 % towards 10 ppm NH 3 and NO x , respectively, with detection limits of 0.13 ppm and 0.11 ppm. Furthermore, the sensor demonstrated outstanding cyclic stability, device-to-device reproducibility, and long-term stability, with a retained response of 98.1 % and 98.5 % towards NH 3 and NO x , respectively. These findings highlight the potential of Ni-doped (MoO 3 /MoS 2) heterostructures for dual gas sensing applications at room temperature. [ABSTRACT FROM AUTHOR]
Copyright of Ceramics International is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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DbLabel: Engineering Source
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  Data: Ni-doped (MoO3/MoS2) heterostructure chemiresistive sensor for dual selective detection of NH3 and NOx at room temperature.
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  Data: <searchLink fieldCode="AR" term="%22Muthumalai%2C+K%2E%22">Muthumalai, K.</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Manoharan%2C+Mathankumar%22">Manoharan, Mathankumar</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Govindharaj%2C+Kamaraj%22">Govindharaj, Kamaraj</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Saravanan%2C+Poovarasan%22">Saravanan, Poovarasan</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Haldorai%2C+Yuvaraj%22">Haldorai, Yuvaraj</searchLink><relatesTo>3,4</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Sofer%2C+Zdeněk%22">Sofer, Zdeněk</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Rajendra+Kumar%2C+Ramasamy+Thangavelu%22">Rajendra Kumar, Ramasamy Thangavelu</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> rtrkumar@buc.edu.in</i>
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  Data: <searchLink fieldCode="JN" term="%22Ceramics+International%22">Ceramics International</searchLink>. Jan2025, Vol. 51 Issue 1, p1017-1024. 8p.
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  Data: <searchLink fieldCode="DE" term="%22Field+emission+electron+microscopy%22">Field emission electron microscopy</searchLink><br /><searchLink fieldCode="DE" term="%22X-ray+photoelectron+spectroscopy%22">X-ray photoelectron spectroscopy</searchLink><br /><searchLink fieldCode="DE" term="%22Gas+detectors%22">Gas detectors</searchLink><br /><searchLink fieldCode="DE" term="%22Transmission+electron+microscopy%22">Transmission electron microscopy</searchLink><br /><searchLink fieldCode="DE" term="%22Transition+metals%22">Transition metals</searchLink>
– Name: Abstract
  Label: Abstract
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  Data: The transition metal dichalcogenide heterostructures are emerging as promising candidates for room-temperature gas sensors. This work presents a Ni-doped (MoO 3 /MoS 2) heterostructure, synthesized via hydrothermal methods with varying Ni concentrations, for the dual selective detection of NH 3 and NO x gases. The electronic sensitization of Ni improves the sensitivity of heterostructure. The heterostructure was characterized by using X-ray diffractometer, field emission scanning electron microscopy (FESEM), and transmission electron microscopy (TEM), with Ni incorporation confirmed by X-ray photoelectron spectroscopy (XPS). The 10 % Ni-doped MoO 3 /MoS 2 heterostructure showed high sensitivity, achieving responses of 15 % and 18.3 % towards 10 ppm NH 3 and NO x , respectively, with detection limits of 0.13 ppm and 0.11 ppm. Furthermore, the sensor demonstrated outstanding cyclic stability, device-to-device reproducibility, and long-term stability, with a retained response of 98.1 % and 98.5 % towards NH 3 and NO x , respectively. These findings highlight the potential of Ni-doped (MoO 3 /MoS 2) heterostructures for dual gas sensing applications at room temperature. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
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  Data: <i>Copyright of Ceramics International is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1016/j.ceramint.2024.11.084
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      – SubjectFull: X-ray photoelectron spectroscopy
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      – SubjectFull: Gas detectors
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      – SubjectFull: Transmission electron microscopy
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      – SubjectFull: Transition metals
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      – TitleFull: Ni-doped (MoO3/MoS2) heterostructure chemiresistive sensor for dual selective detection of NH3 and NOx at room temperature.
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              Text: Jan2025
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              Y: 2025
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