Fully Printed Cellulose Nanofiber–Ag Nanoparticle Composite for High-Performance Humidity Sensor
This paper reports a high-performance humidity sensor made using a novel cellulose nanofiber (CNF)–silver nanoparticle (AgNP) sensing material. The interdigital electrode pattern was printed via reverse-offset printing using Ag nano-ink, and the sensing layer on the printed interdigitated electrode...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2024-02-01
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| Series: | Nanomaterials |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2079-4991/14/4/343 |
| _version_ | 1797297329119690752 |
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| author | Mijin Won Minhun Jung Jaehwan Kim Dong-Soo Kim |
| author_facet | Mijin Won Minhun Jung Jaehwan Kim Dong-Soo Kim |
| author_sort | Mijin Won |
| collection | DOAJ |
| description | This paper reports a high-performance humidity sensor made using a novel cellulose nanofiber (CNF)–silver nanoparticle (AgNP) sensing material. The interdigital electrode pattern was printed via reverse-offset printing using Ag nano-ink, and the sensing layer on the printed interdigitated electrode (IDE) was formed by depositing the CNF-AgNP composite via inkjet printing. The structure and morphology of the CNF-AgNP layer are characterized using ultraviolet–visible spectroscopy, an X-ray diffractometer, field emission scanning electron microscopy, energy-dispersive X-ray analysis, and transmission electron microscopy. The humidity-sensing performance of the prepared sensors is evaluated by measuring the impedance changes under the relative humidity variation between 10 and 90% relative humidity. The CNF-AgNP sensor exhibited very sensitive and fast humidity-sensing responses compared to the CNF sensor. The electrode distance effect and the response and recovery times are investigated. The enhanced humidity-sensing performance is reflected in the increased conductivity of the Ag nanoparticles and the adsorption of free water molecules associated with the porous characteristics of the CNF layer. The CNF-AgNP composite enables the development of highly sensitive, fast-responding, reproducible, flexible, and inexpensive humidity sensors. |
| first_indexed | 2024-03-07T22:19:06Z |
| format | Article |
| id | doaj.art-569cd6d76f4646eca66d107086c3a725 |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-07T22:19:06Z |
| publishDate | 2024-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-569cd6d76f4646eca66d107086c3a7252024-02-23T15:29:23ZengMDPI AGNanomaterials2079-49912024-02-0114434310.3390/nano14040343Fully Printed Cellulose Nanofiber–Ag Nanoparticle Composite for High-Performance Humidity SensorMijin Won0Minhun Jung1Jaehwan Kim2Dong-Soo Kim3Department of Creative Convergence Engineering, Hanbat National University, Yuseong-ku, Daejeon 34158, Republic of KoreaDepartment of Creative Convergence Engineering, Hanbat National University, Yuseong-ku, Daejeon 34158, Republic of KoreaCreative Research Center for Nanocellulose Future Composites, Inha University, Incheon 22212, Republic of KoreaDepartment of Creative Convergence Engineering, Hanbat National University, Yuseong-ku, Daejeon 34158, Republic of KoreaThis paper reports a high-performance humidity sensor made using a novel cellulose nanofiber (CNF)–silver nanoparticle (AgNP) sensing material. The interdigital electrode pattern was printed via reverse-offset printing using Ag nano-ink, and the sensing layer on the printed interdigitated electrode (IDE) was formed by depositing the CNF-AgNP composite via inkjet printing. The structure and morphology of the CNF-AgNP layer are characterized using ultraviolet–visible spectroscopy, an X-ray diffractometer, field emission scanning electron microscopy, energy-dispersive X-ray analysis, and transmission electron microscopy. The humidity-sensing performance of the prepared sensors is evaluated by measuring the impedance changes under the relative humidity variation between 10 and 90% relative humidity. The CNF-AgNP sensor exhibited very sensitive and fast humidity-sensing responses compared to the CNF sensor. The electrode distance effect and the response and recovery times are investigated. The enhanced humidity-sensing performance is reflected in the increased conductivity of the Ag nanoparticles and the adsorption of free water molecules associated with the porous characteristics of the CNF layer. The CNF-AgNP composite enables the development of highly sensitive, fast-responding, reproducible, flexible, and inexpensive humidity sensors.https://www.mdpi.com/2079-4991/14/4/343humidity sensorcellulose nanofibersilver nanoparticlesprinting |
| spellingShingle | Mijin Won Minhun Jung Jaehwan Kim Dong-Soo Kim Fully Printed Cellulose Nanofiber–Ag Nanoparticle Composite for High-Performance Humidity Sensor Nanomaterials humidity sensor cellulose nanofiber silver nanoparticles printing |
| title | Fully Printed Cellulose Nanofiber–Ag Nanoparticle Composite for High-Performance Humidity Sensor |
| title_full | Fully Printed Cellulose Nanofiber–Ag Nanoparticle Composite for High-Performance Humidity Sensor |
| title_fullStr | Fully Printed Cellulose Nanofiber–Ag Nanoparticle Composite for High-Performance Humidity Sensor |
| title_full_unstemmed | Fully Printed Cellulose Nanofiber–Ag Nanoparticle Composite for High-Performance Humidity Sensor |
| title_short | Fully Printed Cellulose Nanofiber–Ag Nanoparticle Composite for High-Performance Humidity Sensor |
| title_sort | fully printed cellulose nanofiber ag nanoparticle composite for high performance humidity sensor |
| topic | humidity sensor cellulose nanofiber silver nanoparticles printing |
| url | https://www.mdpi.com/2079-4991/14/4/343 |
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