TY - JOUR
T1 - Atomic layer deposition of ZnO onto Fe2O3nanoplates for enhanced H2S sensing
AU - Fan, Kai
AU - Guo, Jing
AU - Cha, Limei
AU - Chen, Qinjun
AU - Ma, Jianmin
N1 - Publisher Copyright:
© 2016 Elsevier B.V.
PY - 2017
Y1 - 2017
N2 - We report a gas sensor for testing H2S gas based on Fe2O3/ZnO heterostructure, which was synthesized using the atomic layer deposition (ALD) technique. Compared with the Fe2O3nanosheet gas sensor and ZnO gas sensor, the Fe2O3/ZnO heterostructure gas sensors exhibits better sensing performance at the temperature ranging from 150 °C to 350 °C. In the environment of 100 ppm H2S at 250 °C, the highest response of Fe2O3/ZnO heterostructure gas sensor, about 133.1, was obtained, which is approximately 15-fold as large as that of the Fe2O3nanosheet gas sensor (about 8.7). In addition, the response of Fe2O3/ZnO heterostructure gas sensor reached 21.7, 11.3, 4.9, 6.7, 3.6–100 ppm isopropanol, NO, acetone, ethanol, and methane in the same condition, respectively. These results also reveal that the Fe2O3/ZnO heterostructure gas sensor exhibited the high selectivity. Our results suggest that the Fe2O3/ZnO heterostructure can be a promising candidate for high-performance H2S gas sensors.
AB - We report a gas sensor for testing H2S gas based on Fe2O3/ZnO heterostructure, which was synthesized using the atomic layer deposition (ALD) technique. Compared with the Fe2O3nanosheet gas sensor and ZnO gas sensor, the Fe2O3/ZnO heterostructure gas sensors exhibits better sensing performance at the temperature ranging from 150 °C to 350 °C. In the environment of 100 ppm H2S at 250 °C, the highest response of Fe2O3/ZnO heterostructure gas sensor, about 133.1, was obtained, which is approximately 15-fold as large as that of the Fe2O3nanosheet gas sensor (about 8.7). In addition, the response of Fe2O3/ZnO heterostructure gas sensor reached 21.7, 11.3, 4.9, 6.7, 3.6–100 ppm isopropanol, NO, acetone, ethanol, and methane in the same condition, respectively. These results also reveal that the Fe2O3/ZnO heterostructure gas sensor exhibited the high selectivity. Our results suggest that the Fe2O3/ZnO heterostructure can be a promising candidate for high-performance H2S gas sensors.
KW - FeO
KW - Gas sensor
KW - Heterostructure
KW - Nanostructures
KW - ZnO
UR - http://www.scopus.com/inward/record.url?scp=85006850793&partnerID=8YFLogxK
U2 - 10.1016/j.jallcom.2016.12.203
DO - 10.1016/j.jallcom.2016.12.203
M3 - 文章
AN - SCOPUS:85006850793
SN - 0925-8388
VL - 698
SP - 336
EP - 340
JO - Journal of Alloys and Compounds
JF - Journal of Alloys and Compounds
ER -