High Sensitivity and High Stability QCM Humidity Sensors Based on Polydopamine Coated Cellulose Nanocrystals/Graphene Oxide Nanocomposite
Open Access
- 4 November 2020
- journal article
- research article
- Published by MDPI AG in Nanomaterials
- Vol. 10 (11), 2210
- https://doi.org/10.3390/nano10112210
Abstract
In this paper, a high sensitivity and high stability quartz crystal microbalance (QCM) humidity sensor using polydopamine (PDA) coated cellulose nanocrystal (CNC)/graphene oxide (GO) (PDA@CNC/GO) nanocomposite as sensitive material is demonstrated. The PDA@CNC was prepared by the self-polymerization action on the surface of CNC, and it acted as filler material to form functional nanocomposite with GO. The material characteristics of PDA@CNC, CNC/GO and PDA@CNC/GO were analyzed by transmission electron microscope (TEM) and Fourier transform infrared spectroscopy (FTIR), respectively. The experimental results show that the introduction of PDA@CNC into GO film not only effectively enhanced the sensitivity of GO-based nanocomposite-coated QCM sensor but also significantly maintained high stability in the entire humidity range. The PDA@CNC/GO30-coated QCM humidity sensor exhibited a superior response sensitivity up to 54.66 Hz/% relative humidity (RH), while the change rate of dynamic resistance of the sensor in the humidity range of 11.3–97.3% RH is only 14% that is much smaller than that of CNC/GO-coated QCM. Besides, the effect of the PDA@CNC content on the sensitivity and stability of GO-based nanocomposite-coated QCM humidity was also studied. Moreover, other performances of PDA@CNC/GO-coated QCM humidity sensor, including humidity hysteresis, fast response and recovery and long-term stability, were systematically investigated. This work suggests that PDA@CNC/GO nanocomposite is a promising candidate material for realizing high sensitivity and high stability QCM humidity sensor in the entire humidity detection range.This publication has 40 references indexed in Scilit:
- 2D material attached quartz crystal microbalance for sensing SF 6 gas flow under humid conditionElectronics Letters, 2020
- Molecularly imprinted QCM sensor based on delaminated MXene for chlorpyrifos detection and QCM sensor validationNew Journal of Chemistry, 2020
- Fast and Accurate Detection of Unknown Tags for RFID Systems – Hash Collisions are DesirableIEEE/ACM Transactions on Networking, 2020
- High sensitivity portable capacitive humidity sensor based on In2O3 nanocubes-decorated GO nanosheets and its wearable application in respiration detectionSensors and Actuators B: Chemical, 2019
- Design and analysis of ultrafast and high-sensitivity microwave transduction humidity sensor based on belt-shaped MoO3 nanomaterialSensors and Actuators B: Chemical, 2019
- Carbon nanotubes immobilized on gold electrode as an electrochemical humidity sensorSensors and Actuators B: Chemical, 2019
- Facile, Flexible, Cost-Saving, and Environment-Friendly Paper-Based Humidity Sensor for Multifunctional ApplicationsACS Applied Materials & Interfaces, 2019
- Development of a highly sensitive humidity sensor based on the capacitive micromachined ultrasonic transducerSensors and Actuators B: Chemical, 2019
- Piezoresistive microcantilevers for humidity sensingJournal of Micromechanics and Microengineering, 2019
- Fast-Response and Flexible Nanocrystal-Based Humidity Sensor for Monitoring Human Respiration and Water Evaporation on SkinACS Sensors, 2017