| BANNOV, Alexander, Ondřej JAŠEK, Lenka ZAJÍČKOVÁ a Jan PRÁŠEK. Investigation of Pristine Graphite Oxide as Room-Temperature Chemiresistive Ammonia Gas Sensing Material. SENSORS. Basel, Switzerland: Molecular Diversity Preservation International, 2017, roč. 17, č. 2, s. 320-329. ISSN 1424-8220. Dostupné z: https://dx.doi.org/10.3390/s17020320. |
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@article{1371914,
author = {Bannov, Alexander and Jašek, Ondřej and Zajíčková, Lenka and Prášek, Jan},
article_location = {Basel, Switzerland},
article_number = {2},
doi = {http://dx.doi.org/10.3390/s17020320},
keywords = {graphite oxide; chemiresistive gas sensor; sensitivity; ammonia},
language = {eng},
issn = {1424-8220},
journal = {SENSORS},
title = {Investigation of Pristine Graphite Oxide as Room-Temperature Chemiresistive Ammonia Gas Sensing Material},
url = {http://www.mdpi.com/1424-8220/17/2/320},
volume = {17},
year = {2017}
}
TY - JOUR
ID - 1371914
AU - Bannov, Alexander - Jašek, Ondřej - Zajíčková, Lenka - Prášek, Jan
PY - 2017
TI - Investigation of Pristine Graphite Oxide as Room-Temperature Chemiresistive Ammonia Gas Sensing Material
JF - SENSORS
VL - 17
IS - 2
SP - 320-329
EP - 320-329
PB - Molecular Diversity Preservation International
SN - 14248220
KW - graphite oxide
KW - chemiresistive gas sensor
KW - sensitivity
KW - ammonia
UR - http://www.mdpi.com/1424-8220/17/2/320
N2 - Graphite oxide has been investigated as a possible room-temperature chemiresistive sensor of ammonia in a gas phase. Graphite oxide was synthesized from high purity graphite using the modified Hummers method. The graphite oxide sample was investigated using scanning electron microscopy, energy dispersive X-ray spectroscopy, X-ray diffraction, thermogravimetry and differential scanning calorimetry. Sensing properties were tested in a wide range of ammonia concentrations in air (10–1000 ppm) and under different relative humidity levels (3%–65%). It was concluded that the graphite oxide–based sensor possessed a good response to NH3 in dry synthetic air (dR/R0 ranged from 2.5% to 7.4% for concentrations of 100–500 ppm and 3% relative humidity) with negligible cross-sensitivity towards H2 and CH4. It was determined that the sensor recovery rate was improved with ammonia concentration growth. Increasing the ambient relative humidity led to an increase of the sensor response. The highest response of 22.2% for 100 ppm of ammonia was achieved at a 65% relative humidity level
ER -
BANNOV, Alexander, Ondřej JAŠEK, Lenka ZAJÍČKOVÁ a Jan PRÁŠEK. Investigation of Pristine Graphite Oxide as Room-Temperature Chemiresistive Ammonia Gas Sensing Material. \textit{SENSORS}. Basel, Switzerland: Molecular Diversity Preservation International, 2017, roč.~17, č.~2, s.~320-329. ISSN~1424-8220. Dostupné z: https://dx.doi.org/10.3390/s17020320.
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