Porphyrin nano?ber/single-walled carbon nanotube nanocomposite-based sensors for monitoring hydrogen peroxide vapor

Title
Porphyrin nano?ber/single-walled carbon nanotube nanocomposite-based sensors for monitoring hydrogen peroxide vapor
Authors
변영태이재성정다운
Keywords
Hydrogen peroxide vapor; Porphyrin nanofibers; Single-walled carbon nanotubes; Sub-ppm levels; Real-time monitoring
Issue Date
2020-03
Publisher
Sensors and actuators. B, Chemical
Citation
VOL 306-127525
Abstract
Detection of hydrogen peroxide (H2O2) is particularly important in the fi eld of clinical diagnosis for exhaled breath analysis, because H2O2 is closely related to diseases such as cancer, traumatic brain injury, chronic obstructive pulmonary disease, and asthma. Considering this, development of sensors for sensitive and selective real-time monitoring of H2O2 vapor (HPV) is required. In this study, we report the design and fabrication of a high-performance HPV sensor based on nanocomposites of nanofi bers of a porphyrin derivative (oxo[5,10,15,20-tetra(4-pyridyl)porphyrinato]titanium(IV) (TiOTPyP)) and single-walled carbon nanotubes (SWCNTs) at room temperature. Two types of HPV sensor transducers were fabricated using pristine SWCNTs only and TiOTPyP nanofi ber/SWCNT nanocomposite and the sensor responses were compared. The signifi cant diff erences in reproducibility and selectivity of the two sensors refl ected the signifi cant impact of the added TiOTPyP nanofi bers on the device performance. The response of the TiOTPyP nanofi ber/SWCNT nanocomposite-based sensor to 1 ppm of HPV is 9 times higher than that of the pristine SWCNT-based sensor. In addition, this sensor shows fast response/recovery times in the detection of HPV in the concentration range of 0.1– 10ppm, while showing a weak response to NH3 gas and negligible response to CO, toluene, acetone, hexane, NO, and NO2 gases.
URI
http://pubs.kist.re.kr/handle/201004/70990
ISSN
0925-4005
Appears in Collections:
KIST Publication > Article
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE