MXenes: Reusable materials for NH3 sensor or capturer by controlling the charge injection

Xiao, Bo; Li, Yanchun; Yu, Xing; Cheng, Jianbo

doi:10.1016/j.snb.2016.05.062

Cited by 252 publications

(154 citation statements)

References 54 publications

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“…MXenes, as newly kind 2D materials, combine the rich surface terminations of function groups and high electrical conductivity, which indicates that they have the potential to make a great RT sensing material . Theoretical researches and experimental explorations in recent years have indeed proved this. Professor Cheng's studies, using first‐principle simulation, have shown that Ti 2 CO 2 and Ti 2 C 2 (OH) 2 could be excellent sensing materials for NH 3 gas molecules detection .…”

Section: Introductionmentioning

confidence: 96%

High‐performance flexible sensing devices based on polyaniline/MXene nanocomposites

Zhao

Wang

Wei

et al. 2019

InfoMat

352

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Highly active two‐dimensional (2D) nanocomposites, integrating the unique merits of individual components and synergistic effects of composites, are greatly desired for flexible sensing device applications. Although 2D transition metal carbides and nitrides (MXenes) combined with their high metallic conductivity and versatile surface chemistry have shown its huge potential for sensing reactions, it still remains a major challenge to construct functional materials with intriguing sensing performance at room temperature (RT). Herein, we used an integration of density functional theory (DFT) simulations and bulk electrosensitive measurements to show high electrocatalytic sensitivity of polyaniline/MXene (PANI/Ti3C2T x) nanocomposites. Thanks to the synergistic properties of nanocomposites and high catalytic/absorption capacity of Ti3C2T x MXene, PANI nanoparticles are rationally decorated on Ti3C2T x nanosheet surface via in situ polymerization by low temperature approach to induce remarkable detection sensitivity, rapid response/recovery rate, and mechanical stability at RT. This study offers a versatile platform to use MXenes to fabricate 2D nanocomposites materials for high‐performance flexible gas sensors.

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Section: Introductionmentioning

confidence: 96%

High‐performance flexible sensing devices based on polyaniline/MXene nanocomposites

Zhao

Wang

Wei

et al. 2019

InfoMat

352

180

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“…They found that the Ti 2 C monolayer with oxygen terminations was more selective for NH 3 than other gas molecules (Figure 5D). Xiao et al (2016) considered the interaction between NH 3 and Oterminated semiconducting MXenes (M 2 CO 2 , M=Sc, Ti, Zr, and Hf) with different charge states utilized first-principles simulations. Due to the NH 3 can be adsorbed on M 2 CO 2 with charge transfer, the potential of MXenes-based semiconductor as the NH 3 sensor or capturer is revealed.…”

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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“…For their conductivity, bare MXene monolayers are predicted to be metallic but the O‐terminated ones are predicted to be semiconducting . The layered MXenes with chemical stability, good conductivity, and mechanical stiff show a wide range of potential applications including catalysis, electronics, energy storage, and gas adsorption . For human physiological signals detection, the conductive and large‐surface MXenes have been used to prepare mechanical sensors and gas sensors to detect human motion and respiration, respectively …”

Section: Active 2d Materialsmentioning

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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MXenes: Reusable materials for NH3 sensor or capturer by controlling the charge injection

Cited by 252 publications

References 54 publications

High‐performance flexible sensing devices based on polyaniline/MXene nanocomposites

High‐performance flexible sensing devices based on polyaniline/MXene nanocomposites

MXenes and Their Applications in Wearable Sensors

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

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