AI Article Synopsis
- The study develops new heterostructures made from 2D materials (MoS) and 0D quantum dots (SnS) using a chemical method, which significantly boosts NO gas-sensing performance.
- The sensors demonstrate three times more sensitivity and over 90% recoverability, with characterization techniques (SEM, TEM, XRD, AFM) confirming the successful formation of the MoS/SnS nanomaterials.
- The sensors show a rapid response time of 74 seconds at low NO concentrations, with a detection limit of just 0.54 ppb, supported by theoretical calculations that explain the gas interaction with the material's surface.
Article Abstract
In this work, we use a chemical method to design novel 2D-material/0D-quantum dot (MoS/SnS) heterostructures. Furthermore, the unique 2D/0D heterostructure enhanced the NO gas-sensing capability 3 times and increased the sensing recoverability by more than 90%. Advanced characterization tools such as SEM, TEM, XRD, and AFM confirm the formation of MoS/SnS heterojunction nanomaterials. Using AFM data, the average thickness of the MoS layer was found to be 5 nm. The highest sensor response of 0.33 with good repeatability was observed at 250 ppb of NO. Sensing characterization reveals the ultra-fast response time, that is, 74 s, at 50 ppb of NO. The limit of detection for detecting NO was also found to be very low, that is, 0.54 ppb, by using MoS/SnS heterostructures. The theoretical calculations based on density functional theory well corroborated and quantified the intermolecular interaction and gas adsorption on the surface of MoS/SnS.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1021/acsami.2c03173 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!