A two-dimensional Ti₃C₂T_X MXene@TiO₂/MoS₂ heterostructure with excellent selectivity for the room temperature detection of ammonia

Abstract

Two-dimensional nanomaterials have exhibited a considerable potential for gas sensing application in recent years owing to their unique physical and chemical properties such as large surface-to-volume ratio, abundant edge sites,...

Edge‐Enriched Mo2TiC2Tx/MoS2 Heterostructure with Coupling Interface for Selective NO2 Monitoring

“…By contrast, the Mo 2 TiC 2 T x /MoS 2 composite‐based sensor shows obvious advantages in detecting NO 2 gas. [ 33 ]…”

“…By contrast, the Mo 2 TiC 2 T x /MoS 2 composite-based sensor shows obvious advantages in detecting NO 2 gas. [33] The experimental test and theoretical calculation of selectivity are shown in The responses of the pristine MoS 2 sensor to NO 2 , NH 3 , and H 2 S are 19.25%, 12.40%, and 9.5%, respectively, suggesting that the MoS 2 has a poor selectivity toward NO 2 gas. In contrast, the Mo 2 TiC 2 T x /MoS 2 composite gas sensor shows a high response (415.8%) for NO 2 in eight gases.…”

A novel ReS2–Nb2CTx composite as a sensing platform for ultrasensitive and selective electrochemical detection of dipyramidole from human serum

“…The peak current is highest for 6ReS 2 -Nb 2 CT x x modified CC, which indicates the highest electron transfer kinetics compared to other composites, Nb 2 CT x , and ReS 2 . The electrochemical activity of the composite is higher than Nb 2 CT x and ReS 2 , which can be attributed to the heterojunction formed at the interface of p-type MXene and n-type ReS 2 [40]. In addition, the electrochemical activity of the modified electrodes has been tested in BR buffer solution and it shows the highest electrochemical activity for 6ReS 2 -Nb 2 CT x modified CC Fig.…”

MoO3/TiO2/Ti3C2Tx nanocomposite based gas sensors for highly sensitive and selective isopropanol detection at room temperature

“…Once exposed to reducing gases, the resistance of sensing materials increases, which is what one expects from a p-type semiconductor. 18,27,[42][43][44] During exposure, electrons will be generated, and accordingly, the concentration of the free charge carriers, the holes, will decrease.…”