Thermal stability of two-dimensional Ti2C nanosheets

Li, Jingxiao; Du, Yulei; Huo, Chengxue; Wang, Shun; Cui, Chong

doi:10.1016/j.ceramint.2014.10.070

Cited by 152 publications

(94 citation statements)

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Section: A New Two-dimensional Zirconium Carbide Mxene By Selective Ementioning

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“…Simultaneously, a relatively sharp exothermic peak appears at about 984°C in DSC curves, likely related to crystal structure transformation. [15,40] Note that in the case of Zr3C2Tz, the relatively less significant mass loss in TG curves could be related to the influence of the more stable pre-existing cubic ZrC and residual Zr3Al3C5 second phases presented in the HF-treated powder mixture.To further gain insight in the above distinct thermal behaviors between the Ti3C2Tz and Zr3C2Tz MXenes in the 500-1000°C temperature range, XRD analysis was performed. As shown in Figure 5b, it can be seen that characteristic diffraction peaks belong to hexagonally symmetrical Ti3C2 MXenes disappeared and only cubic TiC can be detected after two hours vacuum annealing at 1000°C.…”

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“…In addition, an endothermic peak appears at 71°C in its corresponding DSC curve. It is reasonable to conclude that the first stage in both cases is due to the removal of physically absorbed water [26,[40][41] and intercalated crystal water.[35] Above 500°C, a broad exothermic peak at about 700°C can be identified in DSC curve of 2D Zr3C2Tz, and without apprent mass loss in TG curve from 500°C to 1200°C. This slow exothermic process might be related to the growth of nanocrystals.…”

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A Two‐Dimensional Zirconium Carbide by Selective Etching of Al₃C₃ from Nanolaminated Zr₃Al₃C₅

et al. 2016

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During the past decade, two-dimensional (2D) materials have attracted extensive attention due to their high surface area to volume ratio, unique electronic structures and physiochemical properties derived from their low dimensionality. [1][2][3][4][5][6][7] Graphene, the most studied 2D material with ultrahigh mechanical strength, [8][9] excellent electronic and thermal conductivities, [1,[10][11] exhibits potential applications in electrochemical energy storage, transparent electrodes, and nano-composites. [12] However, due to its intrinsic zero bandgap and simple chemistry, applications of graphene are restricted in some aspects, such as field effect transistors.[10] Thus, investigations on other 2D materials are performed, especially for those 2D materials with two or more composition elements, such as metal oxide, layered metal chalcogenides (LMDCs), hexagonal boron nitride(BN), hydroxides, etc. [6,13] In recent years, a new class of 2D materials called MXenes, have emerged [14] Members in this family are described by the general formula of Mn+1XnTz (wherein M is an early transition metal, X is C and/or N, n is 1, 2, 3, and Tz denotes surface terminated functional groups). [14] Generally, MXenes are produced by the selective etching of Al layers from their parental layered ternary MAX phases, a large group which comprises more than 70 members. [15][16] Through selective etching of aluminium layers, experimental investigations have successfully identified about 10 different MXenes, Ti3C2Tz, Ti2CTz, Ta4C3Tz, TiNbCTz, (V0.5,Cr0.5)3C2Tz, Ti3CNTz, Nb2CTz, V2CTz, and Nb4C3Tz. [14,17] Most of the synthesized MXenes are metallic, [18] hydrophilic, and predicted to have high elastic moduli, implying potential application as reinforcement of polymer. [19][20] The existance of Dirac electrons in some MXenes has also been theoretically predicted .[21] Moreover, similar to graphene, MXenes are promising candidate electrode materials for lithium-ion batteries and supercapacitors by facile intercalation of Li ions into the MXene layers. [22][23][24][25][26][27] Recently, considerable efforts have been made to further expand the family of 2D carbides. On the basis of a substitutional solid solution method, Gogotsi and Barsoum et al. [28] successfully synthesized Mo2TiC2Tz, Mo2Ti2C3Tz, and Cr2TiC2TzMXenes, and surface dependent electrochemical behaviors in the case of Mo2TiC2Tz have been revealed. Moreover, Mo2CTz MXene [29] has been synthesized through selective etching of gallium (Ga) from a thin film of the new ternary nanolaminated Mo2Ga2C. [30][31] Besides, large-area high-quality 2D α-Mo2C, WC, and TaC crystals have been fabricated by a chemical vapour deposition (CVD) process.[32] However, potential MXene compounds in materials systems where Al-containing MAX phases are not established, such as Hf2C and Zr2C, are yet to be produced.Herein, for the first time, we report the preparation of Zr-containing 2D carbide based on selective extraction of Al-C units from an alternative layered ternary Zr3Al3C5, benefiting from ...

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Section: A New Two-dimensional Zirconium Carbide Mxene By Selective Ementioning

confidence: 99%

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confidence: 99%

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confidence: 99%

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A Two‐Dimensional Zirconium Carbide by Selective Etching of Al₃C₃ from Nanolaminated Zr₃Al₃C₅

et al. 2016

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“…The surface of MXene contains many active groups, such as hydroxyl groups, oxygen ions, and fluorine ions [18][19][20]. The 2D MXene materials show special nanostructures that easily induce oxidization reaction in environments with oxygen and water [21][22][23][24], and demonstrate special electronic [25], magnetic [26] and mechanical properties [27]. Additionally, MXene has a wide range of applications, such as for energy storage, catalysis, adsorption, hydrogen storage, sensors, and new polymer-reinforced composites.…”

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Fabrication of tunable hierarchical MXene@AuNPs nanocomposites constructed by self-reduction reactions with enhanced catalytic performances

et al. 2018

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2D Metal Carbides

Hou

Xia

et al. 2020

Layered 2D Advanced Materials and Their Allied Applications

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Thermal stability of two-dimensional Ti2C nanosheets

Cited by 152 publications

References 29 publications

A Two‐Dimensional Zirconium Carbide by Selective Etching of Al₃C₃ from Nanolaminated Zr₃Al₃C₅

A Two‐Dimensional Zirconium Carbide by Selective Etching of Al₃C₃ from Nanolaminated Zr₃Al₃C₅

Fabrication of tunable hierarchical MXene@AuNPs nanocomposites constructed by self-reduction reactions with enhanced catalytic performances

2D Metal Carbides

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Thermal stability of two-dimensional Ti2C nanosheets

Cited by 152 publications

References 29 publications

A Two‐Dimensional Zirconium Carbide by Selective Etching of Al3C3 from Nanolaminated Zr3Al3C5

A Two‐Dimensional Zirconium Carbide by Selective Etching of Al3C3 from Nanolaminated Zr3Al3C5

Fabrication of tunable hierarchical MXene@AuNPs nanocomposites constructed by self-reduction reactions with enhanced catalytic performances

2D Metal Carbides

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A Two‐Dimensional Zirconium Carbide by Selective Etching of Al₃C₃ from Nanolaminated Zr₃Al₃C₅

A Two‐Dimensional Zirconium Carbide by Selective Etching of Al₃C₃ from Nanolaminated Zr₃Al₃C₅