Tuning the Magnetic Properties of Two-Dimensional MXenes by Chemical Etching

Abstract

Two-dimensional materials based on transition metal carbides have been intensively studied due to their unique properties including metallic conductivity, hydrophilicity and structural diversity and have shown a great potential in several applications, for example, energy storage, sensing and optoelectronics. While MXenes based on magnetic transition elements show interesting magnetic properties, not much is known about the magnetic properties of titanium-based MXenes. Here, we measured the magnetic properties of Ti3C2Tx MXenes synthesized by different chemical etching conditions such as etching temperature and time. Our magnetic measurements were performed in a superconducting quantum interference device (SQUID) vibrating sample. These data suggest that there is a paramagnetic-antiferromagnetic (PM-AFM) phase transition and the transition temperature depends on the synthesis procedure of MXenes. Our observation indicates that the magnetic properties of these MXenes can be tuned by the extent of chemical etching, which can be beneficial for the design of MXenes-based spintronic devices.

Next-Generation Intelligent MXene-Based Electrochemical Aptasensors for Point-of-Care Cancer Diagnostics

“…The reported magnetic moments are, however, simply computational predictions that have yet to be confirmed empirically. It can be due to a lack of information on surface chemistry [ 194 ] and limited synthesis of MXene compounds.…”

Engineering van der Waals Materials for Advanced Metaphotonics

“…324,359−362 Furthermore, the tunable magnetic properties of MXenes have also prepared them for advanced spintronic devices. 363,364 Although the majority of existing MXene studies have focused on the Ti n+1 C n T x species, accelerating exploration of advanced properties in other MXene species would be certainly expected in the future.…”

“…Typically, the rich functionalization of MXene surfaces has endowed them with excellent hydrophilicity and abundant surface active sites. Therefore, they have been intensively used in energy storage devices, including supercapacitors and batteries, energy harvesting devices, sensors, and catalysts. ,− Furthermore, the tunable magnetic properties of MXenes have also prepared them for advanced spintronic devices. , Although the majority of existing MXene studies have focused on the Ti n +1 C n T x species, accelerating exploration of advanced properties in other MXene species would be certainly expected in the future.…”

2D MXene nanocomposites: electrochemical and biomedical applications

“…The lower stability of the –OH termination is because hydrogen atoms can substitute OH terminates or convert into –O terminated at high temperatures, which all involve low stability of –OH terminations. 69,70 Therefore, as can be seen, it is very remarkable to control the ending group of the MXene surface to acquire high-quality MXene with a specific surface area and feasible for being utilized in certain applications.…”