SnO2 nanoparticles-modified 3D-multilayer MoS2 nanosheets for ammonia gas sensing at room temperature

Wenxin Wang; Yuhua Zhen; Jiuyang Zhang; Yingda Li; Hong Zhong; Zilong Jia; Ya Xiong; Qingzhong Xue; Youguo Yan; Njud S. Alharbi; Tasawar Hayat

doi:10.1016/j.snb.2020.128471

SnO₂ nanoparticles-modified 3D-multilayer MoS₂ nanosheets for ammonia gas sensing at room temperature

Wenxin Wang
, Yuhua Zhen
, Jiuyang Zhang
, Yingda Li
, Hong Zhong
, Zilong Jia
, Ya Xiong
, Qingzhong Xue
, Youguo Yan
, Njud S. Alharbi
, Tasawar Hayat

China University of Petroleum (East China)
SICC Co., Ltd.
Faculty of Sciences, King Abdulaziz University
Quaid-I-Azam University

Research output: Contribution to journal › Article › peer-review

116 Scopus citations

Abstract

In this work, MoS₂ nanosheets decorated with SnO₂ nanoparticles were prepared via a facile two-step hydrothermal method, which possesses a proposed sensing composite structure of supporting layer/sensitive dots. The SnO₂/MoS₂ nanocomposites exhibited an excellent sensing response (2080.36) toward 200 ppm NH₃, which was ∼27.5 times higher than that of pristine MoS₂ films, a fast response/recovery time (23/1.6 s) toward 50 ppm at room temperature (22℃), and outstanding selectivity to NH₃ against CH₄, H₂, CO, H₂S, and NO₂ and good repeatability. The excellent gas sensing properties could be dominated by the unique thin layers assembled flower-like structures of 2D MoS₂, which foster the carrier charge transfer process and the reaction to SnO₂/MoS₂ and NH₃. These results present the SnO₂/MoS₂ nanocomposites promising candidate materials for high-performance NH₃ gas sensing at room temperature.

Original language	English
Article number	128471
Journal	Sensors and Actuators B: Chemical
Volume	321
DOIs	https://doi.org/10.1016/j.snb.2020.128471
State	Published - 15 Oct 2020
Externally published	Yes

Keywords

Hydrothermal method
NH gas sensor
Room temperature
SnO/MoS nanocomposites

Access to Document

10.1016/j.snb.2020.128471

Cite this

@article{e7b69f3ffdbe4bc39d2831c58d982427,

title = "SnO2 nanoparticles-modified 3D-multilayer MoS2 nanosheets for ammonia gas sensing at room temperature",

abstract = "In this work, MoS2 nanosheets decorated with SnO2 nanoparticles were prepared via a facile two-step hydrothermal method, which possesses a proposed sensing composite structure of supporting layer/sensitive dots. The SnO2/MoS2 nanocomposites exhibited an excellent sensing response (2080.36) toward 200 ppm NH3, which was ∼27.5 times higher than that of pristine MoS2 films, a fast response/recovery time (23/1.6 s) toward 50 ppm at room temperature (22℃), and outstanding selectivity to NH3 against CH4, H2, CO, H2S, and NO2 and good repeatability. The excellent gas sensing properties could be dominated by the unique thin layers assembled flower-like structures of 2D MoS2, which foster the carrier charge transfer process and the reaction to SnO2/MoS2 and NH3. These results present the SnO2/MoS2 nanocomposites promising candidate materials for high-performance NH3 gas sensing at room temperature.",

keywords = "Hydrothermal method, NH gas sensor, Room temperature, SnO/MoS nanocomposites",

author = "Wenxin Wang and Yuhua Zhen and Jiuyang Zhang and Yingda Li and Hong Zhong and Zilong Jia and Ya Xiong and Qingzhong Xue and Youguo Yan and Alharbi, \{Njud S.\} and Tasawar Hayat",

note = "Publisher Copyright: {\textcopyright} 2020",

year = "2020",

month = oct,

day = "15",

doi = "10.1016/j.snb.2020.128471",

language = "English",

volume = "321",

journal = "Sensors and Actuators B: Chemical",

issn = "0925-4005",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - SnO2 nanoparticles-modified 3D-multilayer MoS2 nanosheets for ammonia gas sensing at room temperature

AU - Wang, Wenxin

AU - Zhen, Yuhua

AU - Zhang, Jiuyang

AU - Li, Yingda

AU - Zhong, Hong

AU - Jia, Zilong

AU - Xiong, Ya

AU - Xue, Qingzhong

AU - Yan, Youguo

AU - Alharbi, Njud S.

AU - Hayat, Tasawar

PY - 2020/10/15

Y1 - 2020/10/15

N2 - In this work, MoS2 nanosheets decorated with SnO2 nanoparticles were prepared via a facile two-step hydrothermal method, which possesses a proposed sensing composite structure of supporting layer/sensitive dots. The SnO2/MoS2 nanocomposites exhibited an excellent sensing response (2080.36) toward 200 ppm NH3, which was ∼27.5 times higher than that of pristine MoS2 films, a fast response/recovery time (23/1.6 s) toward 50 ppm at room temperature (22℃), and outstanding selectivity to NH3 against CH4, H2, CO, H2S, and NO2 and good repeatability. The excellent gas sensing properties could be dominated by the unique thin layers assembled flower-like structures of 2D MoS2, which foster the carrier charge transfer process and the reaction to SnO2/MoS2 and NH3. These results present the SnO2/MoS2 nanocomposites promising candidate materials for high-performance NH3 gas sensing at room temperature.

AB - In this work, MoS2 nanosheets decorated with SnO2 nanoparticles were prepared via a facile two-step hydrothermal method, which possesses a proposed sensing composite structure of supporting layer/sensitive dots. The SnO2/MoS2 nanocomposites exhibited an excellent sensing response (2080.36) toward 200 ppm NH3, which was ∼27.5 times higher than that of pristine MoS2 films, a fast response/recovery time (23/1.6 s) toward 50 ppm at room temperature (22℃), and outstanding selectivity to NH3 against CH4, H2, CO, H2S, and NO2 and good repeatability. The excellent gas sensing properties could be dominated by the unique thin layers assembled flower-like structures of 2D MoS2, which foster the carrier charge transfer process and the reaction to SnO2/MoS2 and NH3. These results present the SnO2/MoS2 nanocomposites promising candidate materials for high-performance NH3 gas sensing at room temperature.

KW - Hydrothermal method

KW - NH gas sensor

KW - Room temperature

KW - SnO/MoS nanocomposites

UR - https://www.scopus.com/pages/publications/85087121411

U2 - 10.1016/j.snb.2020.128471

DO - 10.1016/j.snb.2020.128471

M3 - Article

AN - SCOPUS:85087121411

SN - 0925-4005

VL - 321

JO - Sensors and Actuators B: Chemical

JF - Sensors and Actuators B: Chemical

M1 - 128471

ER -

SnO₂ nanoparticles-modified 3D-multilayer MoS₂ nanosheets for ammonia gas sensing at room temperature

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this