Investigation of Pristine Graphite Oxide as Room-Temperature
Chemiresistive Ammonia Gas Sensing Material

J 2017

Investigation of Pristine Graphite Oxide as Room-Temperature Chemiresistive Ammonia Gas Sensing Material

BANNOV, Alexander, Ondřej JAŠEK, Lenka ZAJÍČKOVÁ and Jan PRÁŠEK

Basic information

Original name

Investigation of Pristine Graphite Oxide as Room-Temperature Chemiresistive Ammonia Gas Sensing Material

Name in Czech

Studium čistého grafén oxidu jako chemirezistivního senzoru amoniaku za pokojové teploty

Authors

BANNOV, Alexander (643 Russian Federation), Ondřej JAŠEK (203 Czech Republic, guarantor, belonging to the institution), Lenka ZAJÍČKOVÁ (203 Czech Republic, belonging to the institution) and Jan PRÁŠEK (203 Czech Republic)

Edition

SENSORS, Basel, Switzerland, Molecular Diversity Preservation International, 2017, 1424-8220

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10305 Fluids and plasma physics

Country of publisher

Switzerland

Confidentiality degree

není předmětem státního či obchodního tajemství

References:

web nakladatele

Impact factor

Impact factor: 2.475

RIV identification code

RIV/00216224:14740/17:00096129

Organization unit

Central European Institute of Technology

DOI

http://dx.doi.org/10.3390/s17020320

UT WoS

000395482700104

Keywords (in Czech)

grafit oxid; chemirezistivní senzor plynu; citlivost; amoniak

Keywords in English

graphite oxide; chemiresistive gas sensor; sensitivity; ammonia

Abstract

ORIG CZ

V originále

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

In Czech

Senzor amoniaku na bazi grafit oxidu za pokojové teploty.

Links

LQ1601, research and development project

Name: CEITEC 2020 (Acronym: CEITEC2020)

Investor: Ministry of Education, Youth and Sports of the CR

Files attached

Bannov_Investigation_of_Pristine_Graphite_Oxide_Room-Temperature_Chemiresistive_Ammonia_Gas_Sensing_Material_as_sensors-17-00320.pdf

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Citovat

BANNOV, Alexander, Ondřej JAŠEK, Lenka ZAJÍČKOVÁ and Jan PRÁŠEK. Investigation of Pristine Graphite Oxide as Room-Temperature Chemiresistive Ammonia Gas Sensing Material. SENSORS. Basel, Switzerland: Molecular Diversity Preservation International, 2017, vol. 17, No 2, p. 320-329. ISSN 1424-8220. Available from: https://dx.doi.org/10.3390/s17020320.

@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 and Jan PRÁŠEK. Investigation of Pristine Graphite Oxide as Room-Temperature Chemiresistive Ammonia Gas Sensing Material. \textit{SENSORS}. Basel, Switzerland: Molecular Diversity Preservation International, 2017, vol.~17, No~2, p.~320-329. ISSN~1424-8220. Available from: https://dx.doi.org/10.3390/s17020320.

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