Abstract
Ambient humidity monitoring is of outmost importance in many technological fields. For this reason, there is still a substantial interest in the development of new simple humidity sensors with high performances. Here it is presented a study to the development of a sensitive, selective and reliable conductometric humidity sensor based on two-dimensional (2D) WS2 nanosheets. The 2D nanomaterial was synthesized by exfoliation of a bulk WS2 with tert–butyllithium, and then deposited onto the interdigitated electrodes of a conductometric ceramic platform. To evaluate the sensing performances, the sensor was exposed to different relative humidity (RH) levels, recording in real time the change of conductivity of the 2D-WS2 layer. The sensor exhibited high sensitivity to humidity at room temperature, showing an increase of the current of about 3 orders of magnitude as RH value was varied between 8% and 85% with fast response and recovery times of 140 s and 30 s, respectively. Field tests, carried out to measure the environmental humidity, demonstrated the good performances of the developed sensor as a highly sensitive and reliable relative humidity probe for environmental applications.
| Original language | English |
|---|---|
| Pages (from-to) | 21-26 |
| Number of pages | 6 |
| Journal | FlatChem |
| Volume | 9 |
| DOIs | |
| Publication status | Published - 2018 May 1 |
Fingerprint
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Ceramics and Composites
- Surfaces, Coatings and Films
- Materials Chemistry
Cite this
}
A highly sensitive room temperature humidity sensor based on 2D-WS2 nanosheets. / Leonardi, S. G.; Wlodarski, W.; Li, Y.; Donato, N.; Sofer, Z.; Pumera, Martin; Neri, G.
In: FlatChem, Vol. 9, 01.05.2018, p. 21-26.Research output: Contribution to journal › Article
TY - JOUR
T1 - A highly sensitive room temperature humidity sensor based on 2D-WS2 nanosheets
AU - Leonardi, S. G.
AU - Wlodarski, W.
AU - Li, Y.
AU - Donato, N.
AU - Sofer, Z.
AU - Pumera, Martin
AU - Neri, G.
PY - 2018/5/1
Y1 - 2018/5/1
N2 - Ambient humidity monitoring is of outmost importance in many technological fields. For this reason, there is still a substantial interest in the development of new simple humidity sensors with high performances. Here it is presented a study to the development of a sensitive, selective and reliable conductometric humidity sensor based on two-dimensional (2D) WS2 nanosheets. The 2D nanomaterial was synthesized by exfoliation of a bulk WS2 with tert–butyllithium, and then deposited onto the interdigitated electrodes of a conductometric ceramic platform. To evaluate the sensing performances, the sensor was exposed to different relative humidity (RH) levels, recording in real time the change of conductivity of the 2D-WS2 layer. The sensor exhibited high sensitivity to humidity at room temperature, showing an increase of the current of about 3 orders of magnitude as RH value was varied between 8% and 85% with fast response and recovery times of 140 s and 30 s, respectively. Field tests, carried out to measure the environmental humidity, demonstrated the good performances of the developed sensor as a highly sensitive and reliable relative humidity probe for environmental applications.
AB - Ambient humidity monitoring is of outmost importance in many technological fields. For this reason, there is still a substantial interest in the development of new simple humidity sensors with high performances. Here it is presented a study to the development of a sensitive, selective and reliable conductometric humidity sensor based on two-dimensional (2D) WS2 nanosheets. The 2D nanomaterial was synthesized by exfoliation of a bulk WS2 with tert–butyllithium, and then deposited onto the interdigitated electrodes of a conductometric ceramic platform. To evaluate the sensing performances, the sensor was exposed to different relative humidity (RH) levels, recording in real time the change of conductivity of the 2D-WS2 layer. The sensor exhibited high sensitivity to humidity at room temperature, showing an increase of the current of about 3 orders of magnitude as RH value was varied between 8% and 85% with fast response and recovery times of 140 s and 30 s, respectively. Field tests, carried out to measure the environmental humidity, demonstrated the good performances of the developed sensor as a highly sensitive and reliable relative humidity probe for environmental applications.
UR - http://www.scopus.com/inward/record.url?scp=85047168732&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85047168732&partnerID=8YFLogxK
U2 - 10.1016/j.flatc.2018.05.001
DO - 10.1016/j.flatc.2018.05.001
M3 - Article
AN - SCOPUS:85047168732
VL - 9
SP - 21
EP - 26
JO - FlatChem
JF - FlatChem
SN - 2452-2627
ER -