A simple approach to synthesis Cr2CTx MXene for efficient hydrogen evolution reaction

Zou, Xinshu; Liu, Hao; Xu, Hao; Wu, Xueyun; Han, Xiaocang; Kang, Jianli; Reddy, Kolan Madhav

doi:10.1016/j.mtener.2021.100668

Cited by 50 publications

(20 citation statements)

References 40 publications

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“…[18,[36][37][38][39] Besides the original HF synthesis scheme, [40][41][42][43][44][45] the most common and safe method is in situ HF-forming etching methods. Acid/fluoride salt solution, such as HCl/LiF, [46][47][48] HCl/NH 4 F, [49] HCl/FeF 3 , [49] or H 2 SO 4 /LiF, [50,51] was directly mixed with Ti 3 AlC 2 solution for etching the A layers. Further, the interaction between stacked MXene layers (removed the Al layers in Ti 3 AlC 2 ) were weakened by ultrasonic treatment or the use of an intermediate such as ionic or polar solutions.…”

Section: Preparations Antioxidant and Properties Of Mxenementioning

confidence: 99%

Roles of MXene in Pressure Sensing: Preparation, Composite Structure Design, and Mechanism

et al. 2022

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Flexible pressure sensors are one of the most important components in the fields of electronic skin (e‐skin), robotics, and health monitoring. However, the application of pressure sensors in practice is still difficult and expensive due to the limited sensing properties and complex manufacturing process. The emergence of MXene, a red‐hot member of the 2D nanomaterials, has brought a brand‐new breakthrough for pressure sensing. Ti3C2Tx is the most popular studied MXene in the field of pressure sensing and shows good mechanical, electrical properties, excellent hydrophilicity, and extensive modifiability. It will ameliorate the properties of the sensitive layer and electrode layer of the pressure sensor, and further apply pressure sensing to many fields, such as e‐skin flexibility. Herein, the preparation technologies, antioxidant methods, and properties of MXene are summarized. The design of MXene‐based microstructures is introduced, including hydrogels, aerogels, foam, fabrics, and composite nanofibers. The mechanisms of MXene pressure sensors are further broached, including piezoresistive, capacitive, piezoelectric, triboelectric, and potentiometric transduction mechanism. Moreover, the integration of multiple devices is reviewed. Finally, the chance and challenge of pressure sensors improved by MXene smart materials in future e‐skin and the Internet of Things are prospected.

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Section: Preparations Antioxidant and Properties Of Mxenementioning

confidence: 99%

Roles of MXene in Pressure Sensing: Preparation, Composite Structure Design, and Mechanism

et al. 2022

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“…[111][112][113] Followed to this, recently, in the exploration of different synthesis methods for MXenes, different fluoride-free etching methods are also being explored to avoid the F groups as surface terminations. [114][115][116]…”

Section: Hf Etchingmentioning

confidence: 99%

“…Mostly, the solution‐based synthesis processes have been used for the formation of MXenes structures, which complicates the image scanning through STM. However, there are a few bottom‐up synthesis mechanisms, which are being developed for MXenes, [ 115 ] hence it may be feasible to analyze the surface and localized property of MXenes intensely through the STM‐based techniques.…”

Section: Mxenes Analysis Through Scanning Probe Microscopymentioning

confidence: 99%

An Assessment of MXenes through Scanning Probe Microscopy

et al. 2022

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Figure 4. a) Schematic exfoliation process for Ti 3 AlC 2 showing the replacement of Al atoms by OH after reaction with HF. b) SEM images, and c) XRD patterns of Ti 3 AlC 2 powder show the compact and multi-layered structure synthesized with 30, 10, 5 wt% HF. a-c) Reproduced with permission. [28] Copyright 2011, Wiley-VCH. d) Exfoliation of multilayers MXenes into 2D nanosheets. using HF etching process. Reproduced with permission. [38]

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“…Because of their excellent mechanical, electronic, thermal, magnetic, and optical properties, MXenes possess numerous potential applications in energy storage, [56] batteries, [57] supercapacitors, [58] catalysts for hydrogen evolution reactions, [59] membranes and sensors, [60] tribological, [61] environmental, [62,63] electrochemical energy storage, [64] photocatalytic, [65] etc. applications (Figure 4).…”

Section: Introduction 1mxene: Chemical Structure Properties and Appli...mentioning

confidence: 99%

MXenes as Emerging 2D Materials for Anticorrosive Application: Challenges and Opportunities

Verma

Zehra

Aslam

et al. 2022

Adv Materials Inter

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extraordinary optical, mechanical, and electronic properties. [1][2][3] MXenes (singular; MXene; pronounced "maxenes") are a class of 2D inorganic compounds that are composed of few-atom-thick layers of transition metal nitrides, carbides, or carbonitriles. [4] The first MXene, Ti 3 C 2 T x , was reported in 2011 by Naguib et al. without any prior prediction for the stability of such 2D materials. [5] MXenes (MXs) have a general chemical formula of M n+1 X n T x (n = 1-3) and are generally synthesized by the delamination of quaternary and tertiary 3D compounds called MAX phases. [6][7][8] In the chemical formula, M signifies a transition metal (e.g., Ti, Sc, Zr, Nb, etc.), X is C and/ or N, and T x is the oxygen, fluorine, or hydroxyl terminals consequent from the synthetic precursors (Figure 1). [9][10][11][12][13][14][15][16] MXenes can also be synthesized from other layered precursors such as Mo 2 Ga 2 C and Zr 3 Al 3 C 5 . After the establishment Ti 3 C 2 T x as of the first MXene, numerous MXenes have been synthesized and predicted theoretically. [17][18][19][20][21] Typically, MXenes are synthesized using a top-down approach that accounts for selective etching of A-layer from 3D crystalline-layered nitrides and carbides (MAX phases; Figure 2). [22] In MAX phases, M n+1 X n layers are held together by an atomic layer of an A-group transition element, usually group 13 or 16 group elements, principally Ga, Si, P, As, and Al. [23] The structures of three possible MAX phases are shown in Figure 2a. MAX phases themselves can be manufactured by the sintering of

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A simple approach to synthesis Cr2CTx MXene for efficient hydrogen evolution reaction

Cited by 50 publications

References 40 publications

Roles of MXene in Pressure Sensing: Preparation, Composite Structure Design, and Mechanism

Roles of MXene in Pressure Sensing: Preparation, Composite Structure Design, and Mechanism

An Assessment of MXenes through Scanning Probe Microscopy

MXenes as Emerging 2D Materials for Anticorrosive Application: Challenges and Opportunities

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