Wetting of MXenes and Beyond

Abstract

MXenes are a class of 2D nanomaterials with exceptional tailor-made properties such as mechano-ceramic nature, rich chemistry, and hydrophilicity, to name a few. However, one of the most challenging issues in any composite/hybrid system is the interfacial wetting. Having a superior integrity of a given composite system is a direct consequence of the proper wettability. While wetting is a fundamental feature, dictating many physical and chemical attributes, most of the common nanomaterials possesses poor affinity due to hydrophobic nature, making them hard to be easily dispersed in a given composite. Thanks to low contact angle, MXenes can offer themselves as an ideal candidate for manufacturing different nano-hybrid structures. Herein this review, it is aimed to particularly study the wettability of MXenes. In terms of the layout of the present study, MXenes are first briefly introduced, and then, the wettability phenomenon is discussed in detail. Upon reviewing the sporadic research efforts conducted to date, a particular attention is paid on the current challenges and research pitfalls to light up the future perspectives. It is strongly believed that taking the advantage of MXene’s rich hydrophilic surface may have a revolutionizing role in the fabrication of advanced materials with exceptional features.

PMMA/PDMS/MXene Nanofibers for Postsurgery Monitoring of Vascular Implants

“…Adding MXene into the nanofibers decreased the water contact angle from ∼135° to 120° (Figure d). The hydrophilic properties of MXene are well documented, , thus its integration into the nanofibers contributed to enhanced hydrophilicity. This shift toward hydrophilicity is directly correlated with the increasing concentration of MXene within the fibers.…”

Emerging MXene-based electrocatalysts for efficient nitrate reduction to ammonia: recent advance, challenges, and prospects

“…The SDM has high Young's modulus (72.4 GPa) and tensile strength (739 MPa) [Figure 3E and F]. In addition, Cheng et al introduced one-dimensional aramid nanofibers (ANF) to construct MXene sheets with high mechanical strength through interlayer hydrogen bonding [33] . The pressure sensor with high-strength MXene sheets shows excellent self-healing properties and mechanical stability [Figure 3G and H].…”

“…(H) Mechanical stability of ANF in cyclic testing. Reproduced with permission from Ref [33] . Copyright 2023 Elsevier.…”

MXene‐Based Capacitive Deionization–Strong Competitor Among Faradaic Electrode Systems: Current Status and Future Perspectives

“…[86] Even though the discovery of MXene is quite young, its versatile chemistry and unique structure qualified them in a wide range of applications including energy storage, [103,104] gas sensor, [105] microwave absorption, [106] electrocatalysis, [107] and environmental remediation. [108] Taking the advantage of excellent physiochemical properties, such as structural stability, [109] possibility to intercalate various ions/solvents, [110] high electrical conductivity (reported up to 24,000 S cm À 1 ), [111] and hydrophilic wettability, [112] MXenes are an appealing CDI material for salty water desalination. However, these properties are strongly hampered by van der Waals force induced aggregation and self-stacking of the MXene nanosheets during electrode fabrication.…”