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Improvement of Gas-Sensing Performance of Large-Area Tungsten Disulfide Nanosheets by Surface Functionalization
Abstract
Semiconducting two-dimensional (2D) transition metal dichalcogenides (TMDCs) are promising gas-sensing materials due to their large surface-to-volume ratio. However, their poor gas-sensing performance resulting from the low response, incomplete recovery, and insufficient selectivity hinders the realization of high-performance 2D TMDC gas sensors. Here, we demonstrate the improvement of gas-sensing performance of large-area tungsten disulfide (WS 2 ) nanosheets through surface functionalization using Ag nanowires (NWs). Large-area WS 2 nanosheets were synthesized through atomic layer deposition of WO 3 followed by sulfurization. The pristine WS 2 gas sensors exhibited a significant response to acetone and NO 2 but an incomplete recovery in the case of NO 2 sensing. After AgNW functionalization, the WS 2 gas sensor showed dramatically improved response (667%) and recovery upon NO 2 exposure. Our results establish that the proposed method is a promising strategy to improve 2D TMDC gas sensors.
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From ultrasoft pseudopotentials to the projector augmented-wave method
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Cited by
Two‐Dimensional Nanostructured Materials for Gas Sensing
Liu, X., Ma, T., Pinna, N., & Zhang, J. (2017) · Advanced Functional Materials · doi:10.1002/adfm.201702168 · Cited by 851
Electrically-Transduced Chemical Sensors Based on Two-Dimensional Nanomaterials
Meng, Z., Stolz, R. M., Mendecki, L., & Mirica, K. A. (2019) · Chemical Reviews · doi:10.1021/acs.chemrev.8b00311 · Cited by 773
Recent Advances in Electrochemical Sensors for Detecting Toxic Gases: NO2, SO2 and H2S
Khan, M. A. H., Rao, M. V., & Li, Q. (2019) · Sensors · doi:10.3390/s19040905 · Cited by 417
Functional gas sensing nanomaterials: A panoramic view
Malik, R., Tomer, V. K., Mishra, Y. K., & Lin, L. (2020) · Applied Physics Reviews · doi:10.1063/1.5123479 · Cited by 410
MoS2‐Based Nanomaterials for Room‐Temperature Gas Sensors
Kumar, R., Zheng, W., Liu, X., Zhang, J., & Kumar, M. (2020) · Advanced Materials Technologies · doi:10.1002/admt.201901062 · Cited by 287
Metadata
- Authors
- Ko, K. Y., Song, J.-G., Kim, Y., Choi, T., Shin, S., Lee, C. W., Lee, K., Koo, J., Lee, H., Kim, J., Lee, T., Park, J., & Kim, H.
- Venue
- ACS Nano
- Publisher
- American Chemical Society (ACS)
- Published
- 2016-10-05
- Volume
- 10
- Issue
- 10
- Pages
- 9287-9296
- ISSN
- 1936-0851 (ISSN-L)
- 1936-086X
- OpenAlex
- W2522325648
- Cited by
- 457
- References
- 4
- FWCI
- 16.62
- Type
- journal article
- Language
- en
- Open access
- closed
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- Ko, K. Y., Song, J.-G., Kim, Y., Choi, T., Shin, S., Lee, C. W., Lee, K., Koo, J., Lee, H., Kim, J., Lee, T., Park, J., & Kim, H. (2016). Improvement of Gas-Sensing Performance of Large-Area Tungsten Disulfide Nanosheets by Surface Functionalization. ACS Nano. https://doi.org/10.1021/acsnano.6b03631
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