Nanocomposites of pre-oxidized Ti3C2Tx MXene and SnO2 nanosheets for highly sensitive and stable formaldehyde gas sensor
In this work, nanocomposites of pre-oxidized TiCT MXene and SnO nanosheets are prepared by facile synthesis and annealing process for formaldehyde sensors. The TiCT MXene is pre-oxidized intentionally to avoid further degradation, which is verified with Raman, TEM and XPS. The morphology and structure of the SnO/MXene nanocomposites are characterized with XRD, SEM and TEM. The gas sensor based on the nanocomposites with 1 wt% TiCT MXene achieves high response, low limit of detection, good selectivity, excellent reproducibility and superior long-term stability. An optimal response of 38.6 is reached at 160 °C to 20 ppm formaldehyde and a limit of detection as low as 50 ppb is successfully achieved. The sensing properties are dependent on the amount of TiCT MXene, and a sensing mechanism has been proposed for the performance enhancement by the synergistic effect between the pre-oxidized TiCT MXene and the SnO nanosheets.
First ; Corresponding
[2020YFB2008604] ; [K21799109] ; [K21799110]
|WOS Research Area|
Materials Science, Ceramics
|WOS Accession No|
|ESI Research Field|
Cited Times [WOS]:4
|Document Type||Journal Article|
|Department||SUSTech Institute of Microelectronics|
1.School of Microelectronics,Southern University of Science and Technology,Shenzhen,518055,China
2.Academy of Advanced Interdisciplinary Studies,Southern University of Science and Technology,Shenzhen,518055,China
|First Author Affilication||SUSTech Institute of Microelectronics|
|Corresponding Author Affilication||SUSTech Institute of Microelectronics|
|First Author's First Affilication||SUSTech Institute of Microelectronics|
Niu，Gaoqiang,Zhang，Mingxiang,Wu，Bo,et al. Nanocomposites of pre-oxidized Ti3C2Tx MXene and SnO2 nanosheets for highly sensitive and stable formaldehyde gas sensor[J]. CERAMICS INTERNATIONAL,2022,49(2).
Niu，Gaoqiang.,Zhang，Mingxiang.,Wu，Bo.,Zhuang，Yi.,Ramachandran，Rajendran.,...&Wang，Fei.(2022).Nanocomposites of pre-oxidized Ti3C2Tx MXene and SnO2 nanosheets for highly sensitive and stable formaldehyde gas sensor.CERAMICS INTERNATIONAL,49(2).
Niu，Gaoqiang,et al."Nanocomposites of pre-oxidized Ti3C2Tx MXene and SnO2 nanosheets for highly sensitive and stable formaldehyde gas sensor".CERAMICS INTERNATIONAL 49.2(2022).
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