Ultra‐Stable Titanium Carbide MXene Functionalized with Heterocyclic Aromatic Amines (Adv. Funct. Mater. 49/2022)

Abstract

Ultra‐Stable MXenes In article number 2203296, Yonghee Lee, Chi Won Ahn, Mu‐Hyun Baik, and co‐workers demonstrate a simple and powerful strategy in the preservation of titanium carbide MXene (Ti3C2Tx) phases with long‐lasting stability in aqueous environments. Pyrrole‐functionalized MXenes were found to facilitate anti‐oxidation at room temperature over 700 days, at 70 °C over 42 days, and even with a strong oxidizer (H2O2) over 50 days.

Carbon‐Based Radar Absorbing Materials toward Stealth Technologies

“…[ 145 ] These have the general formula Ti 3 C 2 T x , where Tx represents an abundant fuctional group such as OH, O, and F, and are considered to be hugely promisng materials for RAMs due to their accordion‐like structures, surface defects, and plentiful surface termination groups. Due to its unique layered structure, hydrophilic surface, high conductivity and good mechanical properties, MXene is widely applied in catalysts, [ 146–148 ] energy storage, [ 149,150 ] optics, [ 151,152 ] desalination, [ 153 ] film, [ 154 ] and other fields in addition to RAMs. This section covers some examples of MXene‐based RAMs as composites, pure MXene, MXene/dielectric materials, MXene/magnetic materials and MXene/multiple loss materials.…”

Highly Air-Stable, Flexible, and Water-Resistive 2D Titanium Carbide MXene-Based RGB Organic Light-Emitting Diode Displays for Transparent Free-Form Electronics

“…It is well-known that MXenes are vulnerable to moisture, particularly, Ti 3 C 2 MXenes are decomposed to generate TiO 2 particles under high humidity conditions, losing their excellent electrical conductivity, , and this low moisture stability is a major obstacle to the commercialization of the technology. , To increase the oxidation stability of the MXene films, hydrogen annealing at high temperature was applied to form a tightly packed network via partial sintering . The oxidation stability of the MXenes against moisture was improved either by the surface passivation with the laminated polymer or from the covalent bonds formed between the transition metal of the MXene and organic ligands …”

“…22 The oxidation stability of the MXenes against moisture was improved either by the surface passivation with the laminated polymer 23 or from the covalent bonds formed between the transition metal of the MXene and organic ligands. 26 In this work, it was discovered that even when thin MXene films were exposed to high humidity environments at high…”