Nano friction and adhesion properties on Ti3C2 and Nb2C MXene studied by AFM

Zhou, Xuanli; Guo, Yanbao; Wang, Deguo; Xu, Quan

doi:10.1016/j.triboint.2020.106646

Cited by 57 publications

(33 citation statements)

References 47 publications

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“…[120] Very recently, Nb 2 CT x MXenes have shown lower frictional and adhesive forces compared to Ti 3 C 2 T x , which were connected to their different atomic compositions thus inducing differences in the surface dipole moment densities. [121] MXenes have been used as reinforcement phase in polymer composites to improve their mechanical and tribological properties. [122][123][124][125][126] Epoxy [123][124][125][126] and ultrahigh-molecular-weight polyethylene (UHMWPE) [122] have been reinforced by either multilayer powder, [122,123] few-layer, [124] chemically functionalized few-layer MXenes, [126] or MXene/graphene [124] and MXene/ carbon nanofiber hybrids.…”

Section: Tribological Behavior Of Mxenesmentioning

confidence: 99%

2D MXenes: Tunable Mechanical and Tribological Properties

2021

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carbon/nitrogen (X) with bonded terminations (T x : -O 2 , -F 2 , -(OH) 2 , -Cl 2 , or their combinations) on the exterior transition metal surfaces. [6][7][8] MXenes' crystal structures and chemical formula are derived from their 3D crystalline precursors, which are usually MAX phases. [9] MAX phases are chemically denoted by M n+1 AX n (n = 1 to 4), for which the M-X layers found in MXenes are sandwiched by layers of A-group elements (mostly group 13-16 of the periodic table). [10] MXenes are synthesized by selectively removing/ etching these A-group element layers. Upon the removal of these A layers, surface terminations (T x ) occupy the bonding sites on M layers previously bonded to the A-group elements. [11] MXenes are excellent candidates for a range of applications (Figure 1a), including energy storage, [7] transparent electronics, [12,13] sensors, [14] electromagnetic interference (EMI) shielding, [15,16] and catalysis. [17] These applications involve MXenes as flexible and thin films, [13] MXenes as anchors in hybrid materials, [18] embedded in matrix materials, [19,20] or even as wearable fabrics. [21] In almost all these applications, fundamental understanding of the mechanical and tribological properties of MXenes is necessary (Figure 1b). The mechanical properties are vital to MXenes' applications in energy storage and catalysis, as MXenes in electrodes can act as active materials, conductive additives, strong binders, and current collectors, which can control the structure of the electrode and withstand expansion and contraction during charge and discharge cycles. [7,22] Additionally, the rise of flexible and wearable devices [13,21,23] necessitates mechanical characterization of MXene to withstand the required mechanical forces while maintaining the flexibility for these applications. Similarly, the potential applications of MXenes in triboelectric nanogenerators for energy storage and wearable electronics requires the characterization of MXenes' tribological properties. [24] More recently, MXenes have been used as reinforcement phases in composite materials. [25] The relevance of the mechanical and tribological properties in various applications is illustrated in Figure 1b. The rationale and support for this figure is summarized in Figures S1 and S2, Supporting Information, and discussed further in the Supporting Information.Despite well over 3000 publications to date on MXenes since their discovery, [26] only 4.9% of publications have studied their mechanical and tribological properties and their applications as reinforcement materials in composites, as shown in Figure 1a. Only two experimental studies on the mechanical stiffness 2D transition metal carbides, nitrides, and carbonitrides, known as MXenes, were discovered in 2011 and have grown to prominence in energy storage, catalysis, electromagnetic interference shielding, wireless communications, electronic, sensors, and environmental and biomedical applications. In addition to their high electrical conductivity and electrochemically activ...

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Section: Tribological Behavior Of Mxenesmentioning

confidence: 99%

2D MXenes: Tunable Mechanical and Tribological Properties

2021

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“…Cu 2p is a characteristic element of Cu-BTC and Ti 2p was derived from Ti 3 C 2 T x , which was similar with the XPS spectra of Ti 3 C 2 T x (ref. [41][42][43] and Cu-BTC. 30,44,45 The characterization result further indicated the successful preparation of Ti 3 C 2 T x /Cu-BTC composites.…”

Section: Formation Of Ti 3 C 2 T X /Cu-btc Nanocompositementioning

confidence: 99%

A novel electrochemical sensor for glyphosate detection based on Ti₃C₂T_x/Cu-BTC nanocomposite

et al. 2022

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“…Additionally, as mentioned above, there are out-of-plane ((M'2, M'')AlC2 or (M'2, M''2)AlC3) and in-plane ((M'2/3, M''1/3)AlC) MAX phases, which can be etched to synthesize Additionally, as mentioned above, there are out-of-plane ((M 2 , M )AlC 2 or (M 2 , M 2 )AlC 3 ) and in-plane ((M 2/3 , M 1/3 )AlC) MAX phases, which can be etched to synthesize the o-MXenes and i-MXenes, respectively. Interestingly, among all the transition metals used in MXene, Sc, Cr, Y, and W have been reported only in these chemically ordered MXenes [101]. The i-MXenes can be found in two structures: (M 2/3 M 1/3 ) 2 C with in-plane elemental order, such as (Mo 2/3 Y 1/3 ) 2 C, or M 4/3 XT x with ordered vacancies, for instance, Mo 1.33 C [29].…”

Section: Structurementioning

confidence: 99%

MXenes—A New Class of Two-Dimensional Materials: Structure, Properties and Potential Applications

et al. 2021

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A new class of two-dimensional nanomaterials, MXenes, which are carbides/nitrides/carbonitrides of transition and refractory metals, has been critically analyzed. Since the synthesis of the first family member in 2011 by Yury Gogotsi and colleagues, MXenes have quickly become attractive for a variety of research fields due to their exceptional properties. Despite the fact that this new family of 2D materials was discovered only about ten years ago, the number of scientific publications related to MXene almost doubles every year. Thus, in 2021 alone, more than 2000 papers are expected to be published, which indicates the relevance and prospects of MXenes. The current paper critically analyzes the structural features, properties, and methods of synthesis of MXenes based on recent available research data. We demonstrate the recent trends of MXene applications in various fields, such as environmental pollution removal and water desalination, energy storage and harvesting, quantum dots, sensors, electrodes, and optical devices. We focus on the most important medical applications: photo-thermal cancer therapy, diagnostics, and antibacterial treatment. The first results on obtaining and studying the structure of high-entropy MXenes are also presented.

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Nano friction and adhesion properties on Ti3C2 and Nb2C MXene studied by AFM

Cited by 57 publications

References 47 publications

2D MXenes: Tunable Mechanical and Tribological Properties

2D MXenes: Tunable Mechanical and Tribological Properties

A novel electrochemical sensor for glyphosate detection based on Ti₃C₂T_x/Cu-BTC nanocomposite

MXenes—A New Class of Two-Dimensional Materials: Structure, Properties and Potential Applications

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Nano friction and adhesion properties on Ti3C2 and Nb2C MXene studied by AFM

Cited by 57 publications

References 47 publications

2D MXenes: Tunable Mechanical and Tribological Properties

2D MXenes: Tunable Mechanical and Tribological Properties

A novel electrochemical sensor for glyphosate detection based on Ti3C2Tx/Cu-BTC nanocomposite

MXenes—A New Class of Two-Dimensional Materials: Structure, Properties and Potential Applications

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A novel electrochemical sensor for glyphosate detection based on Ti₃C₂T_x/Cu-BTC nanocomposite