All in one transitional flow-based integrated self-powered catechol sensor using BiFeO3 nanoparticles
- Journal
- Sensors and Actuators B: Chemical
- Page
- 128417
- Year
- 2020
- Link
- https://doi.org/10.1016/j.snb.2020.128417 250회 연결
Abstract
A highly reliable transitional flow-based integrated self-powered catechol sensor (SPCS) proposed for the detection of organic contaminants in water samples. Here the cost-effective hollow tube-shaped piezoelectric nanogenerator (TFPNG-SPCS) by the BiFeO3 nanoparticles works as an SPCS. The obtained ferroelectric remnant polarization and coercive voltages are 0.089 μC/cm2 and 223 V at 1 Hz frequency. The TFPNG device delivers an instantaneous peak-to-peak power density of 2.624 mW/m2 at 500 MΩ. The classification between physical and chemical stimuli is possible through in-tunnel transitional flow and converts them into a readable electrical signal. The proposed TFPNG-SPCS sensor has good selectivity, reasonable sensitivity, eco-friendly, and detection limits down to 10.2 μM, having a linear relationship with catechol concentrations.