TY - JOUR
T1 - Design, fabrication, and characterization of portable gas sensors based on spinel ferrite nanoparticles embedded in organic membranes
AU - Abu-Hani, Ayah F.S.
AU - Mahmoud, Saleh T.
AU - Awwad, Falah
AU - Ayesh, Ahmad I.
N1 - Funding Information:
The authors would like to acknowledge the financial support by United Arab Emirates University with project number UPAR-25234 (Fund code 31S108).
Publisher Copyright:
© 2016 Elsevier B.V.
PY - 2017
Y1 - 2017
N2 - Two types of H2S gas sensors were fabricated based on zinc and copper ferrites’ nanoparticles (NPs) in organic polymer. The ferrite nanoparticles were synthesized using the co-precipitation method. Polymer solutions of poly-vinyl-alcohol (PVA) and glycerol ionic liquid (IL) were prepared and doped with the ferrite NPs, and then a solution casting method was used to convert these solutions into membranes. These membranes (PVA + IL + ZnFe2O4and PVA + IL + CuFe2O4) were tested against H2S gas with reference to time at different temperatures and H2S gas concentrations. Their conductance response showed high sensitivity towards H2S gas at low temperature of 40 °C, and H2S concentrations of 10 ppm and 25 ppm for ZnFe2O4and CuFe2O4based sensors, respectively. Both sensors showed a fast response time around 20 s. Moreover, ZnFe2O4NPs based sensor showed more reversible behavior compared with CuFe2O4NPs based sensor, and both sensors were selective toward H2S gas. Overall, the sensors were easy and cheap to manufacture, thus, they have potential to be used in industrial fields.
AB - Two types of H2S gas sensors were fabricated based on zinc and copper ferrites’ nanoparticles (NPs) in organic polymer. The ferrite nanoparticles were synthesized using the co-precipitation method. Polymer solutions of poly-vinyl-alcohol (PVA) and glycerol ionic liquid (IL) were prepared and doped with the ferrite NPs, and then a solution casting method was used to convert these solutions into membranes. These membranes (PVA + IL + ZnFe2O4and PVA + IL + CuFe2O4) were tested against H2S gas with reference to time at different temperatures and H2S gas concentrations. Their conductance response showed high sensitivity towards H2S gas at low temperature of 40 °C, and H2S concentrations of 10 ppm and 25 ppm for ZnFe2O4and CuFe2O4based sensors, respectively. Both sensors showed a fast response time around 20 s. Moreover, ZnFe2O4NPs based sensor showed more reversible behavior compared with CuFe2O4NPs based sensor, and both sensors were selective toward H2S gas. Overall, the sensors were easy and cheap to manufacture, thus, they have potential to be used in industrial fields.
KW - CuFeOnanoparticles
KW - HS sensor
KW - Organic polymer
KW - ZnFeOnanoparticles
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U2 - 10.1016/j.snb.2016.10.016
DO - 10.1016/j.snb.2016.10.016
M3 - Article
AN - SCOPUS:85007179577
SN - 0925-4005
VL - 241
SP - 1179
EP - 1187
JO - Sensors and Actuators B: Chemical
JF - Sensors and Actuators B: Chemical
ER -