A flexible VOCs sensor based on a 3D Mxene framework with a high sensing performance

Yuan, Wenjing; Yang, Kai; Peng, Huifen; Li, Fang; Yin, Fuxing

doi:10.1039/c8ta06928j

Cited by 302 publications

(181 citation statements)

References 56 publications

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“…Lee et al (2019) dropped the V 2 CT x solution on the flexible polyimide substrate to form a gas sensor with high sensitivity toward nonpolar gas. Yuan et al (2018) fabricated high-performance and flexible VOC sensors. The sensor based on the 3D MXenes framework, which was prepared through electrospinning aqueous solution of the positively charged polymer.…”

Section: Gas Sensormentioning

confidence: 99%

MXenes and Their Applications in Wearable Sensors

et al. 2020

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MXenes, a kind of two-dimensional material of early transition metal carbides and carbonitrides, have emerged as a unique class of layered-structured metallic materials with attractive features, as good conductivity comparable to metals, enhanced ionic conductivity, hydrophilic property derived from their hydroxyl or oxygen-terminated surfaces, and mechanical flexibility. With tunable etching methods, the morphology of MXenes can be effectively controlled to form nanoparticles, single layer, or multi-layer nanosheets, which exhibit large specific surface areas and is favorable for enhancing the sensing performance of MXenes based sensors. Moreover, MXenes are available to form composites with other materials facilely. With structure design, MXenes or its composite show enhanced mechanical flexibility and stretchability, which enabled its wide application in the fields of wearable sensors, energy storage, and electromagnetic shielding. In this review, recent progress in MXenes is summarized, focusing on its application in wearable sensors including pressure/strain sensing, biochemical sensing, temperature, and gas sensing. Furthermore, the main challenges and future research are also discussed.

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Section: Gas Sensormentioning

confidence: 99%

MXenes and Their Applications in Wearable Sensors

et al. 2020

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“…Apart from graphene and TMDs‐based groups, MXenes with extraordinary surface chemistry, excellent conducting properties, and biocompatibility make them highly suitable matrix for advanced biosensing platforms . MXenes materials have been considered as solid‐state gas sensors with low electrical noise to detect gaseous molecules with strong signal intensity, high manufacturing flexibility, and portability.…”

Section: Human Chemical Signals Detectionmentioning

confidence: 99%

Wearable Electronics Based on 2D Materials for Human Physiological Information Detection

Pang

Yang

et al. 2019

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The ORCID identification number(s) for the author(s) of this article can be found under https://doi.org/10. 1002/smll.201901124. Recently, advancement in materials production, device fabrication, and flexi ble circuit has led to the huge prosperity of wearable electronics for human healthcare monitoring and medical diagnosis. Particularly, with the emergence of 2D materials many merits including light weight, high stretchability, excellent biocompatibility, and high performance are used for those potential applications. Thus, it is urgent to review the wearable electronics based on 2D materials for the detection of various human signals. In this work, the typical graphene-based materials, transition-metal dichalcogenides, and transition metal carbides or carbonitrides used for the wearable electronics are discussed. To well understand the human physiological information, it is divided into two dominated categories, namely, the human physical and the human chemical signals. The monitoring of body temperature, electrograms, subtle signals, and limb motions is described for the physical signals while the detection of body fluid including sweat, breathing gas, and saliva is reviewed for the chemical signals. Recent progress and development toward those specific utilizations are highlighted in the Review with the representative examples. The future outlook of wearable healthcare techniques is briefly discussed for their commercialization. Wearable Electronics

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“…Besides using the ice growth interface, there have been a few attempts to create macroscopic 3D structures with different template assisted techniques [75][76][77]. In 2015, Hu et al reported the drop casting of a Ti 3 C 2 T x suspension into a Ni foam template, forming a MXene film which exhibited high gravimetric capacitance [75].…”

Section: Alternative Template-assisted Techniquesmentioning

confidence: 99%

“…Although this work maintains the metallic framework, depending on the necessity, it could potentially be removed through chemical etching to form a free-standing 3D MXene architecture similar to the process already employed for graphene-based 3D materials. Also, high-performance and flexible volatile organic compounds sensors based on 3D MXene framework (3D-M) were prepared by immersing an electrospinning produced PVA/PEI 3D framework into MXene dispersion for several minutes and subsequently drying it in air [77].…”

Section: Alternative Template-assisted Techniquesmentioning

confidence: 99%

MXene-based 3D porous macrostructures for electrochemical energy storage

et al. 2020

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2D transition metal carbides and nitrides (MXenes) have shown outstanding potential as electrode materials for energy storage applications due to a combination of metallic conductivity, wide interlayer spacing, and redox-active, metal oxide-like surfaces capable of exhibiting pseudocapacitive behavior. It is well known that 2D materials have a strong tendency to restack and aggregate, due to their strong van der Waals interactions, reducing their surface availability and inhibiting electrochemical performance. In order to overcome these problems, work has been done to assemble 2D materials into 3D porous macrostructures. Structuring 2D materials in 3D can prevent agglomeration, increase specific surface area and improve ion diffusion, whilst also adding chemical and mechanical stability. Although still in its infancy, a number of papers already show the potential of 3D MXene architectures for energy storage, but the impact of the processing parameters on the microstructure of the materials, and the influence this has on electrochemical properties is still yet to be fully quantified. In some situations the reproducibility of works is hindered by an oversight of parameters which can, directly or indirectly, influence the final architecture and its properties. This review compiles publications from 2011 up to 2020 about the research developments in 3D porous macrostructures using MXenes as building blocks, and assesses their application as battery and supercapacitor electrodes. Recommendations are also made for future works to achieve a better understanding and progress in the field. carbon and/or nitrogen and T x represents surface terminations which vary depending on the synthesis method used (for example, hydroxyl, oxygen, or fluorine) [10].With less than 10 years since their discovery, efforts are still mainly pointed towards the assessment of its potentialities and exploration of its properties, while their integration and application in various engineering fields are still very much in their infancy. Nevertheless, investigations have shown very competitive results in energy storage devices attracting a lot of interest in the field. In particular, the inner conductive metal carbide layers provide fast electron supply to electrochemically active sites, and functional groups on the surface, allow water intercalation and fast redox activity for pseudocapacitive energy storage [11][12][13]. Besides energy storage, MXenes also showed promising properties and have been researched for a variety of other areas, such as electromagnetic shielding, environmental, sensors, optoeletronic devices, and renewable energy [9,[14][15][16].For most practical applications, the MXene powders must be assembled or processed into a macroscopic sample such as, for example, an electrode. Conventionally this is done either by mixing it with a solvent to form a slurry which is painted over a substrate, by directly vacuum filtration, by spin coating, or by spraying the MXene suspension to form a compact film. During these processes, there i...

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A flexible VOCs sensor based on a 3D Mxene framework with a high sensing performance

Abstract: 3D Mxene based gas sensors demonstrated a highly sensitive detection for VOCs in an ultra-wide sensing range at room temperature.

Cited by 302 publications

References 56 publications

MXenes and Their Applications in Wearable Sensors

MXenes and Their Applications in Wearable Sensors

Wearable Electronics Based on 2D Materials for Human Physiological Information Detection

MXene-based 3D porous macrostructures for electrochemical energy storage

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