Tailoring MXene Thickness and Functionalization for Enhanced Room-Temperature Trace NO₂ Sensing.

ABSTRACT: In this study, precise control over the thickness and termination of Ti₃C₂T_X MXene flakes is achieved to enhance their electrical properties, environmental stability, and gas-sensing performance. Utilizing a hybrid method involving high-pressure processing, stirring, and immiscible solutions, sub-100 nm MXene flake thickness is achieved within the MXene film on the Si-wafer. Functionalization control is achieved by defunctionalizing MXene at 650 °C under vacuum and H₂ gas in a CVD furnace, followed by refunctionalization with iodine and bromine vaporization from a bubbler attached to the CVD. Notably, the introduction of iodine, which has a larger atomic size, lower electronegativity, reduce shielding effect, and lower hydrophilicity (contact ang

SUBMITTER: Hilal M 

PROVIDER: S-EPMC10786774 | biostudies-literature | 2024 Jan

REPOSITORIES: biostudies-literature