Photo-assisted Amperometric Acetone Sensing of PVP/WO3 Hybrid Nanofibers
Author(s)
Imran, M
Motta, N
Tesfamichael, T
Sonar, P
Alaudeen Abdul Haroon Rashid, SS
Sabri, Y
Shafiei, M
Griffith University Author(s)
Year published
2019
Metadata
Show full item recordAbstract
PVP/WO3 hybrid nanofibers (NFs) are synthesized by embedding n-type semiconducting metal oxide WO3 nanoparticles (90-120 nm) in PVP NFs using electrospinning and their amperometric response is evaluated towards different concentrations of acetone. Material and structural properties of the PVP/WO3 hybrid NFs are characterized using SEM, FTIR, Raman and XPS. Amperometric responses of the PVP/WO3 hybrid NFs are investigated toward acetone as a function of bias voltages (3-7 V) without and with UV irradiation. The maximum response (1.42 μA) was obtained at 7 V bias voltage for 12.5 ppm of acetone at operating temperature of 350 ...
View more >PVP/WO3 hybrid nanofibers (NFs) are synthesized by embedding n-type semiconducting metal oxide WO3 nanoparticles (90-120 nm) in PVP NFs using electrospinning and their amperometric response is evaluated towards different concentrations of acetone. Material and structural properties of the PVP/WO3 hybrid NFs are characterized using SEM, FTIR, Raman and XPS. Amperometric responses of the PVP/WO3 hybrid NFs are investigated toward acetone as a function of bias voltages (3-7 V) without and with UV irradiation. The maximum response (1.42 μA) was obtained at 7 V bias voltage for 12.5 ppm of acetone at operating temperature of 350 under photoexcitation with a rapid response/recovery time of 18s/42s. Detection of acetone down to 7 ppb at 7 V bias voltage under photo-activation is calculated. A possible sensing mechanism is also explained.
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View more >PVP/WO3 hybrid nanofibers (NFs) are synthesized by embedding n-type semiconducting metal oxide WO3 nanoparticles (90-120 nm) in PVP NFs using electrospinning and their amperometric response is evaluated towards different concentrations of acetone. Material and structural properties of the PVP/WO3 hybrid NFs are characterized using SEM, FTIR, Raman and XPS. Amperometric responses of the PVP/WO3 hybrid NFs are investigated toward acetone as a function of bias voltages (3-7 V) without and with UV irradiation. The maximum response (1.42 μA) was obtained at 7 V bias voltage for 12.5 ppm of acetone at operating temperature of 350 under photoexcitation with a rapid response/recovery time of 18s/42s. Detection of acetone down to 7 ppb at 7 V bias voltage under photo-activation is calculated. A possible sensing mechanism is also explained.
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Conference Title
Proceedings of IEEE Sensors
Volume
2019-October
Subject
Atomic, molecular and optical physics