Vertical Few-Layer WSe2 Nanosheets for NO2 Sensing
Source abstract
Abstract
WSe2 has been widely used in NO2 gas sensors in recent years, but it still suffers from low responsiveness and slow reaction kinetics. Herein, we used the chemical vapor deposition method to synthesize a vertically grown few-layer WSe2 (3D-WSe2) nanosheet film. Three-dimensional-WSe2 is transformed into vertical growth by introducing a TiO2 buffer layer and exposes much more edge active sites to improve gas sensitivity. As a result, it has not only high crystallinity and few defects but also a high response to NO2 (34.6% at 1 ppm), a fast response time (66 s), a short recovery time (17 min), a low limit of detection (4 ppb), excellent stability, and gas selectivity at room temperature.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Gas Sensing Nanomaterials and Sensors · 2D Materials and Applications · Transition Metal Oxide Nanomaterials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Center for Advanced Thin Films and Devices, School of Materials and Energy, Southwest University, Chongqing 400715, China
Micro-Nano Manufacturing and System Integration Center, Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, People’s Republic of China
Fachgebiet Angewandte Nanophysik, Institut für Physik & IMN MacroNano, Technische Universität Ilmenau, 98693 Ilmenau, Germany
Funding
Ministry of Education of the People's Republic of China · Key Laboratory of Luminescence Analysis and Molecular Sensing, Southwest University
References (47)
Show source-provided references
1. 10.1038/s41563-018-0104-710.1038/s41563-018-0104-7 ↗
2. 10.1021/acsnano.8b0877810.1021/acsnano.8b08778 ↗
3. 10.1016/j.snb.2020.12920110.1016/j.snb.2020.129201 ↗
4. 10.1007/s40820-020-00558-310.1007/s40820-020-00558-3 ↗
5. 10.1021/acsami.8b1743710.1021/acsami.8b17437 ↗
6. 10.1016/j.snb.2020.12917510.1016/j.snb.2020.129175 ↗
7. 10.1039/c8ta04404j10.1039/c8ta04404j ↗
8. 10.1016/j.snb.2020.12889110.1016/j.snb.2020.128891 ↗
9. 10.1016/j.snb.2021.12990210.1016/j.snb.2021.129902 ↗
10. 10.1021/acsami.1c1126210.1021/acsami.1c11262 ↗
11. 10.1016/j.jhazmat.2021.12583010.1016/j.jhazmat.2021.125830 ↗
12. 10.1002/adfm.20180257510.1002/adfm.201802575 ↗
13. 10.1016/j.jhazmat.2021.12512010.1016/j.jhazmat.2021.125120 ↗
14. 10.1039/c7cp04351a10.1039/c7cp04351a ↗
15. 10.1016/j.apsusc.2019.06.04910.1016/j.apsusc.2019.06.049 ↗
16. 10.1016/j.sna.2021.11263710.1016/j.sna.2021.112637 ↗
17. 10.1002/adfm.20200043510.1002/adfm.202000435 ↗
18. 10.1016/j.snb.2017.05.06010.1016/j.snb.2017.05.060 ↗
19. 10.1038/s41586-018-0008-310.1038/s41586-018-0008-3 ↗
20. 10.1039/c8sc01778f10.1039/c8sc01778f ↗
21. 10.1016/j.matlet.2020.12899410.1016/j.matlet.2020.128994 ↗
22. 10.1002/aelm.20160050210.1002/aelm.201600502 ↗
23. 10.1021/acsami.8b0703410.1021/acsami.8b07034 ↗
24. 10.1016/j.snb.2021.12957110.1016/j.snb.2021.129571 ↗
25. 10.1002/admi.20180052410.1002/admi.201800524 ↗
26. 10.1021/acs.nanolett.5b0206910.1021/acs.nanolett.5b02069 ↗
27. 10.1021/nn504784410.1021/nn5047844 ↗
28. 10.1021/nn405719x10.1021/nn405719x ↗
29. 10.1039/c9ta05348d10.1039/c9ta05348d ↗
30. 10.1021/acs.nanolett.7b0394810.1021/acs.nanolett.7b03948 ↗
31. 10.1021/acsnano.6b0052710.1021/acsnano.6b00527 ↗
32. 10.1016/j.snb.2019.12701310.1016/j.snb.2019.127013 ↗
33. 10.1038/ncomms1220610.1038/ncomms12206 ↗
34. 10.1021/acsnano.5b0450410.1021/acsnano.5b04504 ↗
35. 10.1021/acsnano.6b0363110.1021/acsnano.6b03631 ↗
36. 10.1088/2053-1583/aa6bea10.1088/2053-1583/aa6bea ↗
37. 10.1021/am504616c10.1021/am504616c ↗
38. 10.1021/acsami.0c0719310.1021/acsami.0c07193 ↗
39. 10.1021/acsami.7b0706310.1021/acsami.7b07063 ↗
40. 10.1021/acsami.8b2098410.1021/acsami.8b20984 ↗
41. 10.1016/j.snb.2017.09.05910.1016/j.snb.2017.09.059 ↗
42. 10.1016/j.apsusc.2020.14711010.1016/j.apsusc.2020.147110 ↗
43. 10.1039/c6ra17643g10.1039/c6ra17643g ↗
44. 10.1007/s40820-020-0394-610.1007/s40820-020-0394-6 ↗
45. 10.1016/j.snb.2017.12.18110.1016/j.snb.2017.12.181 ↗
46. 10.1016/j.snb.2017.12.07010.1016/j.snb.2017.12.070 ↗
47. 10.1002/adfm.20200336010.1002/adfm.202003360 ↗