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1. Annealed Ti ₃ C ₂ T _z MXene Films for Oxidation-Resistant Functional Coatings

   https://doi.org/10.1021/acsanm.0c02473  

   Zhao, Xiaofei; Holta, Dustin E.; Tan, Zeyi; Oh, Ju-Hyun; Echols, Ian J.; Anas, Muhammad; Cao, Huaixuan; Lutkenhaus, Jodie L.; Radovic, Miladin; Green, Micah J. (November 2020, ACS Applied Nano Materials)

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2. Annealing Ti ₃ C ₂ T _z MXenes to Control Surface Chemistry and Friction

   https://doi.org/10.1021/acsami.3c18232  

   Arole, Kailash; Micci-Barreca, Stefano A.; Athavale, Swarnima; Tajedini, Mohsen; Raghuvaran, Greeshma; Lutkenhaus, Jodie L.; Radovic, Miladin; Liang, Hong; Green, Micah J. (February 2024, ACS Applied Materials & Interfaces)

   Although surface terminations (such as ═O, –Cl, –F, and –OH) on MXene nanosheets strongly influence their functional properties, synthesis of MXenes with desired types and distribution of those terminations is still challenging. Here, it is demonstrated that thermal annealing helps in removing much of the terminal groups of molten salt-etched multilayered (ML) Ti3C2Tz. In this study, the chloride terminations of molten salt-etched ML-Ti3C2Tz were removed via thermal annealing at increased temperatures under an inert (argon) atmosphere. This thermal annealing created some bare sites available for further functionalization of Ti3C2Tz. XRD, EDS, and XPS measurements confirm the removal of much of the terminal groups of ML-Ti3C2Tz. Here, the annealed ML-Ti3C2Tz was refunctionalized by −OH groups and 3-aminopropyl triethoxysilane (APTES), which was confirmed by FTIR. The −OH and APTES surface-modified ML-Ti3C2Tz are evaluated as a solid lubricant, exhibiting ∼70.1 and 66.7% reduction in friction compared to a steel substrate, respectively. This enhanced performance is attributed to the improved interaction or adhesion of functionalized ML-Ti3C2Tz with the substrate material. This approach allows for the effective surface modification of MXenes and control of their functional properties. 

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3. Terahertz Polarizers Based on 2D Ti ₃ C ₂ T _z MXene: Spin Cast from Aqueous Suspensions

   https://doi.org/10.1002/adpr.202000084  

   Li, Guangjiang; Montazeri, Kiana; Ismail, Mostafa K.; Barsoum, Michel W.; Nabet, Bahram; Titova, Lyubov V. (December 2020, Advanced Photonics Research)

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4. Water Transport and Thermomechanical Properties of Ti ₃ C ₂ T _z MXene Epoxy Nanocomposites

   https://doi.org/10.1021/acsami.9b11448  

   Carey, Michael S.; Sokol, Maxim; Palmese, Giuseppe R.; Barsoum, Michel W. (October 2019, ACS Applied Materials & Interfaces)
5. Two-Dimensional MXenes Mo ₂ Ti ₂ C ₃ T _z and Mo ₂ TiC ₂ T _z : Microscopic Conductivity and Dynamics of Photoexcited Carriers

   https://doi.org/10.1021/acsaem.9b01966  

   Li, Guangjiang; Natu, Varun; Shi, Teng; Barsoum, Michel W.; Titova, Lyubov V. (January 2020, ACS Applied Energy Materials)