High Sensitive Nitrogen Dioxide Sensor Based on Polyvinyl Alcohol-Cellulose Nanofibril Organohydrogel with Repairability, Anti-Freezing, Stretchability, Long-Lasting Moisture, and High Strength

Zijing Zhou, Yuning Liang, Wenxi Huang, Bizhang Zhong, Jindong Ye, Kai Tao, Jin Wu

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Fabrication of stretchable sensor has been increasingly attractive for emerging wearable applications in health assessment, internet-of-things, electronic skin, robotics, and environment monitoring. Nitrogen dioxide (NO2) is one of the most harmful gases to the human body and environment. Here, we demonstrate a novel high-sensitivity (233%/ppm) NO2 gas sensor based on polyvinyl alcohol (PV A)-cellulose nanofibril (CNF) organohydrogel. This organohydrogel exhibits remarkable stretchability (break strain 672%), and high mechanical strength (up to more than 370 KPa). Besides, the PVA-CNF organohydrogels remained in their original condition without any damage on the surface after stretching 15 ×. Basing on the crosslinked hydrogen bond, this PV A-CNF organohydrogel exhibits repairability and remoldability. The addition of glycerol increases the antifreezing ability and long-lasting moisture.

Original languageEnglish
Title of host publication21st International Conference on Solid-State Sensors, Actuators and Microsystems, TRANSDUCERS 2021
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages164-167
Number of pages4
ISBN (Electronic)9781665412674
DOIs
StatePublished - 20 Jun 2021
Event21st International Conference on Solid-State Sensors, Actuators and Microsystems, TRANSDUCERS 2021 - Virtual, Online, United States
Duration: 20 Jun 202125 Jun 2021

Publication series

Name21st International Conference on Solid-State Sensors, Actuators and Microsystems, TRANSDUCERS 2021

Conference

Conference21st International Conference on Solid-State Sensors, Actuators and Microsystems, TRANSDUCERS 2021
Country/TerritoryUnited States
CityVirtual, Online
Period20/06/2125/06/21

Keywords

  • cellulose nanofibril
  • gas sensor
  • NO2
  • organohydrogel
  • Polyvinyl alcohol

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