Recent Trends in Synthesis and Applications of Porous MXene Assemblies: A Topical Review

Abstract

MXene possesses high conductivity, excellent hydrophilicity, rich surface chemistry, hence holds great potential in various applications. However, MXene materials have low surface area utilization due to the agglomeration of ultrathin nanosheets. Assembling 2D MXene nanosheets into 3D multi‐level architectures is an effective way to circumvent this issue. Incorporation of MXene with other nanomaterials during the assembly process could rationally tune and tailor the specific surface area, porosity and surface chemistry of the MXene assemblies. The complementary and synergistic effect between MXene and nanomaterials could expand their advantages and make up for their disadvantages, thus boost the performance of 3D porous MXene composites. Herein, we summarize the recent progress in fabrication of porous MXene architectures from 2D to 3D, and also discuss the potential applications of MXene nanostructures in energy harvesting systems, sensing, electromagnetic interference shielding, water purification and photocatalysis.

Recent advances in two-dimensional MXenes for zinc-ion batteries

“…, O, F, Cl, Br, I, and OH) can be obtained by selectively corroding the A layer from the MAX phase. 55–57…”

2D-Materials-Based Wearable Biosensor Systems

“…Metal carbides and nitrides (MXenes) are large in number and varied in category. With their excellent electrical conductivity, large surface area, and flexibility, they are widely employed in biosensing, electrocatalysis, and energy storage, occupying an important position in flexible sensing of 2D materials [ 80 , 81 ]. In addition, the large layer spacing of MXenes results in large resistance changes during deformation; therefore, they are often used in piezoresistive sensors such as electronic skins [ 82 , 83 ].…”

Recent Advances in the Synthesis of MXene Quantum Dots

“…Since graphene, a monolayer of graphite material, was successfully peeled from graphite in 2004, [1] the two‐dimensional (2D) nanomaterials such as graphene‐like nanocarbons, [2–4] transition metal dichalcogenides (TMDs), [5–8] transition metal oxides (TMOs), [5] black phosphorene (BP)], [4,5] hexagonal boron nitride (h‐BN), [4] graphitic carbon nitride (g‐C 3 N 4 ), [9,10] Silicene and MXenes, etc., [4,7,11–13] have gained considerable research interest. Compared with their bulk counterparts, these 2D nanomaterials possess diverse physical and chemical properties, endowing them with great potential applications in many fields [14–25] .…”