TY - JOUR
T1 - MOF-derived porous NiO/NiFe2O4 nanocubes for improving the acetone detection
AU - Yang, Jiaqi
AU - Jiang, Bin
AU - Wang, Xi
AU - Wang, Chong
AU - Sun, Yanfeng
AU - Zhang, Hong
AU - Shimanoe, Kengo
AU - Lu, Geyu
N1 - Funding Information:
This work was supported by National Nature Science Foundation of China (Nos. 61573164 , 61520106003 , 61327804 , 61831011 , 61833006 , 62001187 ), National High-Tech Research and Development Program of China (863 Program, No. 2014AA06A505 ), Jilin Provincial Education Department Science and Technology Project ( JJKH20211092KJ ), the Special Project of the Province-University Co-constructing Program of Jilin Province ( SXGJXX2017-3 ).
Publisher Copyright:
© 2022 Elsevier B.V.
PY - 2022/9/1
Y1 - 2022/9/1
N2 - Exploring sensing materials with superior catalytic properties is of paramount importance for acetone detection. In this work, NiO/NiFe2O4 nanocubes derived from Ni/Fe bimetal metal-organic frameworks (MOFs) precursors are synthesized by one-step impregnation method and subsequent annealing process. The microstructure and morphology of the synthesized samples are investigated by a series of characterization. The results indicate that uniform and porous NiO/NiFe2O4 nanocubes are formed. The gas sensing properties of NiO/NiFe2O4 composites are systematically evaluated. Benefitting from the synergistic effect of abundant sites, p-p junction and high surface area, the optimal sensors based on NiO/NiFe2O4 (Ni/Fe=1.5 at) exhibit the best sensing performance. The sensors show the highest response (19.9–100 pm acetone), short response/recovery times (2.4 s/19.6 s), low detection limit (200 ppb) and a good humidity tolerance ((S35% RH-S95% RH)/S35% RH= 0.095) to acetone at 200 °C. The results offer us a promising alternative to develop an ideal platform for acetone detection.
AB - Exploring sensing materials with superior catalytic properties is of paramount importance for acetone detection. In this work, NiO/NiFe2O4 nanocubes derived from Ni/Fe bimetal metal-organic frameworks (MOFs) precursors are synthesized by one-step impregnation method and subsequent annealing process. The microstructure and morphology of the synthesized samples are investigated by a series of characterization. The results indicate that uniform and porous NiO/NiFe2O4 nanocubes are formed. The gas sensing properties of NiO/NiFe2O4 composites are systematically evaluated. Benefitting from the synergistic effect of abundant sites, p-p junction and high surface area, the optimal sensors based on NiO/NiFe2O4 (Ni/Fe=1.5 at) exhibit the best sensing performance. The sensors show the highest response (19.9–100 pm acetone), short response/recovery times (2.4 s/19.6 s), low detection limit (200 ppb) and a good humidity tolerance ((S35% RH-S95% RH)/S35% RH= 0.095) to acetone at 200 °C. The results offer us a promising alternative to develop an ideal platform for acetone detection.
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U2 - 10.1016/j.snb.2022.131985
DO - 10.1016/j.snb.2022.131985
M3 - Article
AN - SCOPUS:85129762830
VL - 366
JO - Sensors and Actuators B: Chemical
JF - Sensors and Actuators B: Chemical
SN - 0925-4005
M1 - 131985
ER -