Preparation and Application of 2D MXene-Based Gas Sensors: A Review

Chemosensors, Journal Year: 2021, Volume and Issue: 9(8), P. 225 - 225

Published: Aug. 14, 2021

Since MXene (a two-dimensional material) was discovered in 2011, it has been favored all aspects due to its rich surface functional groups, large specific area, high conductivity, porosity, organic bonds, and hydrophilicity. In this paper, the preparation of is introduced first. HF etching first method for MXene; however, corrosive, resulting development situ (fluoride + HCl). Due harmful effects fluorine terminal on performance MXene, a fluorine-free developed. The increase interlayer spacing brought about by adding an intercalator can affect MXene’s performance. usual methods render inevitably agglomerate yields are insufficient. Many new were researched order solve problems agglomeration yield. Secondly, application MXene-based materials gas sensors discussed. often regarded as flexible sensor, detection ppb-level acetone at room temperature observed time. After formation composite materials, increasing area increased number active sites adsorption sensitivity improved. Moreover, paper discusses gas-sensing mechanism MXene. metallic affected expansion lamellae will be doped with H2O oxygen during process become p-type semiconductor. A p-n heterojunction Schottky barrier forms combinations other semiconductors; thus, sensitivities regulated controlled them. Although there only several reports sensors, expected that effectively detect gases temperature, especially NH3 VOC gas. Finally, challenges opportunities sensor

Language: Английский

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Two-dimensional transition metal carbides and/or nitrides (MXenes) and their applications in sensors

Materials Today Physics, Journal Year: 2021, Volume and Issue: 21, P. 100527 - 100527

Published: Sept. 16, 2021

Language: Английский

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MXene-based aptasensors: Advances, challenges, and prospects

Progress in Materials Science, Journal Year: 2022, Volume and Issue: 129, P. 100967 - 100967

Published: May 21, 2022

Language: Английский

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Toward Smart Sensing by MXene

Small, Journal Year: 2022, Volume and Issue: 19(14)

Published: Dec. 14, 2022

Abstract The Internet of Things era has promoted enormous research on sensors, communications, data fusion, and actuators. Among them, sensors are a prerequisite for acquiring the environmental information delivering to an artificial center make decisions. MXene‐based have aroused tremendous interest because their extraordinary performances. In this review, electrical, electronic, optical properties MXenes first introduced. Next, discussed according sensing mechanisms such as electrochemical, methods. Initially, biosensors introduced based chemiresistors field‐effect transistors. Besides, wearable pressure sensor is demonstrated with piezoresistive devices. Third, electrochemical methods include amperometry electrochemiluminescence examples. addition, approaches refer surface plasmonic resonance fluorescence energy transfer. Moreover, prospects delivered multimodal fusion toward complicated human‐like senses. Eventually, future opportunities MXene conveyed in new material discovery, structure design, proof‐of‐concept

Language: Английский

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MXenes-based nanomaterials for biosensing and biomedicine

Coordination Chemistry Reviews, Journal Year: 2023, Volume and Issue: 479, P. 215002 - 215002

Published: Jan. 10, 2023

Language: Английский

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Advances in MXenes-based optical biosensors: A review

Biosensors and Bioelectronics, Journal Year: 2022, Volume and Issue: 202, P. 113995 - 113995

Published: Jan. 13, 2022

Language: Английский

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Progress and Perspectives of Single‐Atom Catalysts for Gas Sensing

Advanced Materials, Journal Year: 2022, Volume and Issue: 35(3)

Published: Sept. 15, 2022

Abstract Single‐atom catalysts (SACs) attract extensive attention in the field of heterogeneous catalysis recent years due to maximum atom utilization and unique physical chemical properties. The gas sensing is actually a process but SACs are new this area. Although show huge potential sensing, area currently still at infancy stage. This work critically reviews advances current status single‐atom materials. General synthesis routes, characterization methods, performance indexes introduced. At end, challenges future prospects on presented from authors’ perspectives. anticipated provide insights guideline for community.

Language: Английский

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Covalent functionalization of MXenes for tribological purposes - a critical review

Advances in Colloid and Interface Science, Journal Year: 2022, Volume and Issue: 309, P. 102792 - 102792

Published: Oct. 3, 2022

Language: Английский

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Advanced growth of 2D MXene for electrochemical sensors

Environmental Research, Journal Year: 2023, Volume and Issue: 222, P. 115279 - 115279

Published: Jan. 25, 2023

Language: Английский

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Highly Selective H₂S Gas Sensor Based on Ti₃C₂T_x MXene–Organic Composites

ACS Applied Materials & Interfaces, Journal Year: 2023, Volume and Issue: 15(5), P. 7063 - 7073

Published: Jan. 25, 2023

Cost-effective and high-performance H2S sensors are required for human health environmental monitoring. 2D transition-metal carbides nitrides (MXenes) appealing candidates gas sensing due to good conductivity abundant surface functional groups but have been studied primarily detecting NH3 VOCs, with generally positive responses that not highly selective the target gases. Here, we report on a negative response of pristine Ti3C2Tx thin films (in contrast other tested gases) further optimization sensor performance using composite flakes conjugated polymers (poly[3,6-diamino-10-methylacridinium chloride-co-3,6-diaminoacridine-squaraine], PDS-Cl) polar charged nitrogen. The composite, preserving high selectivity Ti3C2Tx, exhibits an 2% at 5 ppm (a thirtyfold enhancement) low limit detection 500 ppb. In addition, our density theory calculations indicate mixture MXene needs be taken into account describe mechanism in agreement experimental results. Thus, this extends application range MXene-based composites deepens understanding their mechanisms.

Language: Английский

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