2D non-carbide MXenes: an emerging material class for energy storage and conversion

Abstract

Since the first discovery of MXene in 2011, various compositions of MXenes have been developed based on the combinations of different transition metals. Their exceptional and intriguing properties, such as...

Recent advances in MXenes: beyond Ti-only systems

“…While the carbide MXenes are easily synthesized, the nitride and carbonitride MXenes face difficulties in their synthesis due to the presence of strong bonds. 35 It is important to note that Ti 3 CNT x and Ti 2 C 0.5 N 0.5 T x are the only experimentally synthesized carbonitride MXenes as of today. 33,36 Irrespective of the parameter 'X', MXenes could be classied based on the composition of transition metals as monometallic better structural stability than Ti 3 C 2 T x .…”

Recent Advances and Perspectives of Lewis Acidic Etching Route: An Emerging Preparation Strategy for MXenes

“…to complete together [85]. Besides, compared with carbide MXenes, nitride MXenes require more precise adjustment of etching parameters during the preparation process, because the M-N bond may be broken under the attack of HF etchant [57]. However, harsh reaction environment could result in the formation of defects, such as Ti vacancy, which can adversely affect the electronic conductivity of MXenes [86].…”

“…2). For example, nitride MXenes display stronger polarity, higher electronic conductivity and more active sites compared with carbide counterparts, which renders them promising materials for secondary batteries [57]. Besides, high entropy MXenes such as (Ti 1/5 V 1/5 Zr 1/5 Nb 1/5 Ta 1/5 ) 2 CT x offers high mechanical strain owing to the distinct lattice distortions, which can effectively induce the uniform nucleation and deposition of Li metal [58].…”

A review of boron nitride-based photocatalysts for carbon dioxide reduction

“…61,62 Notwithstanding discussions, in 2004, fabricating and then characterising the rst 2D material, graphene, 63 Novoselov and Geim were awarded the Noble Prize for Physics in 2010 due to their scientic breakthrough in materials science. Since this discovery, researchers worldwide have been conducting both laboratory and eld studies into the synthesis of novel 2D materials, 64 known as contemporary alchemy. Therefore, they prepare and characterise different 2D materials with a wide array of applications, such as energy storage, photodetection, precise electronic devices, clean energy production, biosensing, catalysis, and medicine.…”