Sub-ppt NH3 detection by MoS2@sulfur nanosheets
Source abstract
Abstract
Novel nanostructured materials are expected to revive materials for chemiresistive sensor applications. MoS 2 -based gas sensor is widely studied, however, which usually is capable of detecting gas at ppm level. Here, owing to the two-dimensional layered structure that facilitated the surface reaction, sulfur nanosheets (S-NSs) was first designed to composite with MoS 2 to improve the sensing performance. Because of the unique electronic and physical properties of S-NSs, the developed chemiresistive sensor based on MoS 2 @S-NSs nanocomposite demonstrated to realize ultrasensitive detection of NH 3 at 0.1 ppt level with a response signal of 68%, and which also showed fast response and recover (9/8.7 seconds respectively) at room temperature in air. Except for the good electrical conductivity and the large adsorption site of MoS 2, the excellent sensing property of S-NSs itself made the most important contribution to this appealing high sensitivity to NH 3. Additionally, this study has also put forth comprehensive gas sensing mechanisms based on experimental results. In essence, this research offers an innovative materials system tailored for the highly efficient detection of NH 3.
Source: expertdata · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: 2D Materials and Applications · Gas Sensing Nanomaterials and Sensors · MXene and MAX Phase Materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (41)
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