Bar Favelukis

MXenes are 2D transition-metal carbides, nitrides, or carbonitrides, typically synthesized by HF- or molten salt etching of a parent MAX phase metallic A-layer, followed by intercalation (e.g., alkali ions like Li+ or Na+, or organic molecules), and exfoliation. (1) During synthesis, MXenes surfaces acquire an abundance of termination groups (e.g., −O, −OH, −F, −Cl) with their chemistry depending on the synthesis process.

1 Introduction MAX phases are a diverse family of atomically-layered compounds that follow the formula Mn+1AXn.[1, 2] Where n is a positive integer (typically 1 to 4), M represents an early transition metal, A represents a group-A element, typically from groups 13 and 14 of the periodic table, and X is either carbon and/or nitrogen.