An Organic Solvent-Assisted Intercalation and Collection (OAIC) for Ti3C2Tx MXene with Controllable Sizes and Improved Yield

Qu, Danyao; Jian, Yingying; Guo, Lihao; Chen, Su; Zhang, Xingmao; Hu, Wenwen; Zheng, Wenyue; Zhao, Zhenhuan; Zhong, Peng; Li, Peipei; Du, Tao; Haick, Hossam; Wu, Weiwei

doi:10.1007/s40820-021-00705-4

Cited by 43 publications

(34 citation statements)

References 50 publications

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“…As shown in Figure 3d , our PFD strategy can facilitate the fabrication of MXenes with high yields, large lateral sizes, outstanding electrical conductivities (Tables S2 and S3 , Supporting Information). [ 15 , 17 , 18 , 22 , 29 ] Therefore, the PFD strategy is excellent for the production of mono/few‐layer Ti 3 C 2 T x materials with both high yields and high performances.…”

Section: Resultsmentioning

confidence: 99%

Synthesis of Large‐Area MXenes with High Yields through Power‐Focused Delamination Utilizing Vortex Kinetic Energy

et al. 2022

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Evaluating the delamination process in the synthesis of MXenes (2D transition metal carbides and nitrides) is critical for their development and applications. However, the preparation of large defect-free MXene flakes with high yields is challenging. Here, a power-focused delamination (PFD) strategy is demonstrated that can enhance both the delamination efficiency and yield of large Ti 3 C 2 T x MXene nanosheets through repetitive precipitation and vortex shaking processes. Following this protocol, a colloidal concentration of 20.4 mg mL -1 of the Ti 3 C 2 T x MXene can be achieved after five PFD cycles, and the yield of the basal-plane-defect-free Ti 3 C 2 T x nanosheets reaches 61.2%, which is 6.4-fold higher than that obtained using the sonication-exfoliation method. Both nanometer-thin devices and self-supporting films exhibit excellent electrical conductivities (≈25 000 and 8260 S cm -1 for a 1.8 nm thick monolayer and 11 μm thick film, respectively). Hydrodynamic simulations reveal that the PFD method can efficiently concentrate the shear stress on the surface of the unexfoliated material, leading to the exfoliation of the nanosheets. The PFD-synthesized large MXene nanosheets exhibit superior electrical conductivities and electromagnetic shielding (shielding effectiveness per unit volume: 35 419 dB cm 2 g -1 ). Therefore, the PFD strategy provides an efficient route for the preparation of high-performance single-layer MXene nanosheets with large areas and high yields.

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Section: Resultsmentioning

confidence: 99%

Synthesis of Large‐Area MXenes with High Yields through Power‐Focused Delamination Utilizing Vortex Kinetic Energy

et al. 2022

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“…Due to their 2D nanostructured properties, MXenes have unique physical, electronic, chemical, and optical properties and have been widely used in various fields. [29,[230][231][232] Based on the above chapters, we have carried out a detailed analysis and summary of the doping mechanism and synthesis method of MXenes. Elemental doping/substitution of MXenes as a functionalization approach has been shown to be an effective strategy for optimizing the properties of MXenes and extending practical applications.…”

Section: Applications Of Heteroatom Doped Mxenes Materialsmentioning

confidence: 99%

Element‐Doped Mxenes: Mechanism, Synthesis, and Applications

Wang

Sun

et al. 2022

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Heteroatom doping can endow MXenes with various new or improved electromagnetic, physicochemical, optical, and structural properties. This greatly extends the arsenal of MXenes materials and their potential for a spectrum of applications. This article comprehensively and critically discusses the syntheses, properties, and emerging applications of the growing family of heteroatom‐doped MXenes materials. First, the doping strategies, synthesis methods, and theoretical simulations of high‐performance MXenes materials are summarized. In order to achieve high‐performance MXenes materials, the mechanism of atomic element doping from three aspects of lattice optimization, functional substitution, and interface modification is analyzed and summarized, aiming to provide clues for developing new and controllable synthetic routes. The mechanisms underlying their advantageous uses for energy storage, catalysis, sensors, environmental purification and biomedicine are highlighted. Finally, future opportunities and challenges for the study and application of multifunctional high‐performance MXenes are presented. This work could open up new prospects for the development of high‐performance MXenes.

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“…It is urgent to develop HF-free mild synthesis methods , and efficient modification by surface engineering , interface engineering, , and optimizing the existing MXene species. Ab initio calculations − are highly encouraged for the discovery of novel MXene materials.…”

Section: New Mxenes Discoverymentioning

confidence: 99%