TY - JOUR
T1 - Fe3O4-HNTs-APTES-palladium nanocomposites with enhanced high-temperature gas response properties
AU - Kadam, Avinash A.
AU - Sung, Jung Suk
AU - Sharma, Bharat
N1 - Publisher Copyright:
© 2020 Elsevier B.V.
PY - 2021/2/15
Y1 - 2021/2/15
N2 - Highly stable gas sensors for high temperatures <400 °C with ultra-fast detection of hydrogen (H2) gas are immediately needed especially for the H2 synthesizing industries that require high-temperatures. The Fe3O4-HNTs-APTES-Palladium (M-HNTs-A-Pd) nanocomposite possess exceptional physicochemical characteristics and possible to be ideal candidates for high-temperature H2 gas sensor. In the present work, M-HNTs-A-Pd nanocomposite was successfully synthesized and applied for high-temperature gas sensing. The obtained H2 gas sensing results present that the as-prepared gas sensor has the best gas response towards H2 gas at 300 °C. Also, low sensor response to the interfering gases (nitrogen dioxide (NO2), ethanol (EtOH), hydrogen sulfide (H2S), benzene (C6H6), carbon monoxide (CO), and methane (CH4)) showed the improved selectivity towards hydrogen. The as-prepared sensor also presents stability as shown by its repeatable property after exposed at a different concentration of H2 (250 ppb–100 ppm). The H2-sensing response was systematically described in terms of the adsorption-desorption mechanism. In conclusion, M-HNTs-A-Pd nanocomposites system proves to be an ideal material for the highly-stable H2 gas sensor at higher temperatures.
AB - Highly stable gas sensors for high temperatures <400 °C with ultra-fast detection of hydrogen (H2) gas are immediately needed especially for the H2 synthesizing industries that require high-temperatures. The Fe3O4-HNTs-APTES-Palladium (M-HNTs-A-Pd) nanocomposite possess exceptional physicochemical characteristics and possible to be ideal candidates for high-temperature H2 gas sensor. In the present work, M-HNTs-A-Pd nanocomposite was successfully synthesized and applied for high-temperature gas sensing. The obtained H2 gas sensing results present that the as-prepared gas sensor has the best gas response towards H2 gas at 300 °C. Also, low sensor response to the interfering gases (nitrogen dioxide (NO2), ethanol (EtOH), hydrogen sulfide (H2S), benzene (C6H6), carbon monoxide (CO), and methane (CH4)) showed the improved selectivity towards hydrogen. The as-prepared sensor also presents stability as shown by its repeatable property after exposed at a different concentration of H2 (250 ppb–100 ppm). The H2-sensing response was systematically described in terms of the adsorption-desorption mechanism. In conclusion, M-HNTs-A-Pd nanocomposites system proves to be an ideal material for the highly-stable H2 gas sensor at higher temperatures.
KW - Adsorption-desorption mechanism
KW - H sensing
KW - Interfering gases
KW - M-HNTs-A-Pd nanocomposites
UR - http://www.scopus.com/inward/record.url?scp=85091602967&partnerID=8YFLogxK
U2 - 10.1016/j.jallcom.2020.157041
DO - 10.1016/j.jallcom.2020.157041
M3 - Article
AN - SCOPUS:85091602967
SN - 0925-8388
VL - 854
JO - Journal of Alloys and Compounds
JF - Journal of Alloys and Compounds
M1 - 157041
ER -