MOF-derived porous NiO/NiFe2O4 nanocubes for improving the acetone detection

Jiaqi Yang, Bin Jiang, Xi Wang, Chong Wang, Yanfeng Sun, Hong Zhang, Kengo Shimanoe, Geyu Lu

研究成果: ジャーナルへの寄稿学術誌査読

抄録

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.

本文言語英語
論文番号131985
ジャーナルSensors and Actuators B: Chemical
366
DOI
出版ステータス出版済み - 9月 1 2022

!!!All Science Journal Classification (ASJC) codes

  • 電子材料、光学材料、および磁性材料
  • 器械工学
  • 凝縮系物理学
  • 表面、皮膜および薄膜
  • 金属および合金
  • 電子工学および電気工学
  • 材料化学

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