SnO2 (n)-NiO (p) composite nanowebs: Gas sensing properties and sensing mechanisms

Jae Hun Kim; Jae Hyoung Lee; Ali Mirzaei; Hyoun Woo Kim; Sang Sub Kim

doi:10.1016/j.snb.2017.11.063

SnO₂ (n)-NiO (p) composite nanowebs: Gas sensing properties and sensing mechanisms

Jae Hun Kim, Jae Hyoung Lee, Ali Mirzaei, Hyoun Woo Kim, Sang Sub Kim

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

124 Scopus citations

Abstract

Aiming to optimize SnO₂-NiO nanocomposite sensors for detection of hazardous gases, a series of xSnO₂-(1-x) NiO composite nanowebs with different compositions (x = 0.1, 0.3, 0.5, 0.7, and 0.9) were synthesized using an electrospinning process. The formation of long and continuous SnO₂-NiO nanowebs was verified. Depending on the composition, xSnO₂-(1-x) NiO composite nanowebs‎ showed either n-type (SnO₂-rich composition) or p-type (NiO-rich composition) gas-sensing behavior. The best sensing performance was obtained for the nanowebs of 0.5SnO₂-0.5NiO. The presence of plenty of p-n heterojunctions along with the high oxygen adsorption property of NiO were the main reasons for the high response to the NO₂ and C₆H₆ gases at this optimized composition.

Original language	English
Pages (from-to)	204-214
Number of pages	11
Journal	Sensors and Actuators B: Chemical
Volume	258
DOIs	https://doi.org/10.1016/j.snb.2017.11.063
State	Published - 1 Apr 2018

Bibliographical note

Publisher Copyright:
© 2017 Elsevier B.V.

Keywords

Composite
Gas sensor
Nanoweb
NiO
SnO

Access to Document

10.1016/j.snb.2017.11.063

Cite this

@article{37588fbffe584338bdd983640272a9bf,

title = "SnO2 (n)-NiO (p) composite nanowebs: Gas sensing properties and sensing mechanisms",

abstract = "Aiming to optimize SnO2-NiO nanocomposite sensors for detection of hazardous gases, a series of xSnO2-(1-x) NiO composite nanowebs with different compositions (x = 0.1, 0.3, 0.5, 0.7, and 0.9) were synthesized using an electrospinning process. The formation of long and continuous SnO2-NiO nanowebs was verified. Depending on the composition, xSnO2-(1-x) NiO composite nanowebs‎ showed either n-type (SnO2-rich composition) or p-type (NiO-rich composition) gas-sensing behavior. The best sensing performance was obtained for the nanowebs of 0.5SnO2-0.5NiO. The presence of plenty of p-n heterojunctions along with the high oxygen adsorption property of NiO were the main reasons for the high response to the NO2 and C6H6 gases at this optimized composition.",

keywords = "Composite, Gas sensor, Nanoweb, NiO, SnO",

author = "Kim, {Jae Hun} and Lee, {Jae Hyoung} and Ali Mirzaei and Kim, {Hyoun Woo} and Kim, {Sang Sub}",

note = "Publisher Copyright: {\textcopyright} 2017 Elsevier B.V.",

year = "2018",

month = apr,

day = "1",

doi = "10.1016/j.snb.2017.11.063",

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T2 - Gas sensing properties and sensing mechanisms

AU - Kim, Jae Hun

AU - Lee, Jae Hyoung

AU - Mirzaei, Ali

AU - Kim, Hyoun Woo

AU - Kim, Sang Sub

PY - 2018/4/1

Y1 - 2018/4/1

N2 - Aiming to optimize SnO2-NiO nanocomposite sensors for detection of hazardous gases, a series of xSnO2-(1-x) NiO composite nanowebs with different compositions (x = 0.1, 0.3, 0.5, 0.7, and 0.9) were synthesized using an electrospinning process. The formation of long and continuous SnO2-NiO nanowebs was verified. Depending on the composition, xSnO2-(1-x) NiO composite nanowebs‎ showed either n-type (SnO2-rich composition) or p-type (NiO-rich composition) gas-sensing behavior. The best sensing performance was obtained for the nanowebs of 0.5SnO2-0.5NiO. The presence of plenty of p-n heterojunctions along with the high oxygen adsorption property of NiO were the main reasons for the high response to the NO2 and C6H6 gases at this optimized composition.

AB - Aiming to optimize SnO2-NiO nanocomposite sensors for detection of hazardous gases, a series of xSnO2-(1-x) NiO composite nanowebs with different compositions (x = 0.1, 0.3, 0.5, 0.7, and 0.9) were synthesized using an electrospinning process. The formation of long and continuous SnO2-NiO nanowebs was verified. Depending on the composition, xSnO2-(1-x) NiO composite nanowebs‎ showed either n-type (SnO2-rich composition) or p-type (NiO-rich composition) gas-sensing behavior. The best sensing performance was obtained for the nanowebs of 0.5SnO2-0.5NiO. The presence of plenty of p-n heterojunctions along with the high oxygen adsorption property of NiO were the main reasons for the high response to the NO2 and C6H6 gases at this optimized composition.

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