Green synthesis of reduced Ti3C2Tx MXene nanosheets with enhanced conductivity, oxidation stability, and SERS activity

Limbu, Tej B.; Chitara, Basant; Orlando, Jason D.; Cervantes, Martha Y. Garcia; Kumari, Shalini; Li, Qi; Tang, Yongan; Yan, Fei

doi:10.1039/c9tc06984d

Cited by 105 publications

(103 citation statements)

References 55 publications

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“…Such oxidation rates of MXenes do not satisfy application requirements for sensors, where on the contrary, MAX phase-based sensors show long-term stability [45]. Therefore, the focus still remains on the development of new oxidation preventing methods such as hydrogen annealing [46] and L-ascorbic acid treatment [47], which have already shown positive effects.…”

Section: Mxene Coating Adhesion and Stabilitymentioning

confidence: 99%

Strain Sensing Coatings for Large Composite Structures Based on 2D MXene Nanoparticles

Monastyreckis

Stepura

Soyka

et al. 2021

Sensors

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Real-time strain monitoring of large composite structures such as wind turbine blades requires scalable, easily processable and lightweight sensors. In this study, a new type of strain-sensing coating based on 2D MXene nanoparticles was developed. A Ti3C2Tz MXene was prepared from Ti3AlC2 MAX phase using hydrochloric acid and lithium fluoride etching. Epoxy and glass fibre–reinforced composites were spray-coated using an MXene water solution. The morphology of the MXenes and the roughness of the substrate were characterised using optical microscopy and scanning electron microscopy. MXene coatings were first investigated under various ambient conditions. The coating experienced no significant change in electrical resistance due to temperature variation but was responsive to the 301–365 nm UV spectrum. In addition, the coating adhesion properties, electrical resistance stability over time and sensitivity to roughness were also analysed in this study. The electromechanical response of the MXene coating was investigated under tensile loading and cyclic loading conditions. The gauge factor at a strain of 4% was 10.88. After 21650 loading cycles, the MXene coating experienced a 16.25% increase in permanent resistance, but the response to loading was more stable. This work provides novel findings on electrical resistance sensitivity to roughness and electromechanical behaviour under cyclic loading, necessary for further development of MXene-based nanocoatings. The advantages of MXene coatings for large composite structures are processability, scalability, lightweight and adhesion properties.

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Section: Mxene Coating Adhesion and Stabilitymentioning

confidence: 99%

Strain Sensing Coatings for Large Composite Structures Based on 2D MXene Nanoparticles

Monastyreckis

Stepura

Soyka

et al. 2021

Sensors

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“…To date, approximately 20 single-transition metal MXenes and 15 ordered double-transition metal MXenes have reportedly been experimentally synthesized and up to 100 different MXene compositions have been theoretically predicted to be stable [ 3 ]. The high elastic mechanical strength [ 4 ], electronic conductivity [ 5 , 6 ], chemical stability [ 7 , 8 , 9 ] and hydrophilicity [ 10 , 11 ] of MXenes have opened broad prospects for their applications in a variety of industrial and technological areas including energy storage [ 12 , 13 , 14 , 15 , 16 , 17 , 18 ], optoelectronics [ 19 , 20 ], spintronics [ 11 , 21 ], catalysis [ 22 ] and sensing [ 23 ]. Although there is significant research effort in the optical [ 24 , 25 ] and electronic [ 11 , 26 , 27 ] properties of MXenes, the magnetic properties of these materials for spintronic application are relatively unexplored [ 21 , 28 ].…”

Section: Introductionmentioning

confidence: 99%

Tuning the Magnetic Properties of Two-Dimensional MXenes by Chemical Etching

et al. 2021

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Two-dimensional materials based on transition metal carbides have been intensively studied due to their unique properties including metallic conductivity, hydrophilicity and structural diversity and have shown a great potential in several applications, for example, energy storage, sensing and optoelectronics. While MXenes based on magnetic transition elements show interesting magnetic properties, not much is known about the magnetic properties of titanium-based MXenes. Here, we measured the magnetic properties of Ti3C2Tx MXenes synthesized by different chemical etching conditions such as etching temperature and time. Our magnetic measurements were performed in a superconducting quantum interference device (SQUID) vibrating sample. These data suggest that there is a paramagnetic-antiferromagnetic (PM-AFM) phase transition and the transition temperature depends on the synthesis procedure of MXenes. Our observation indicates that the magnetic properties of these MXenes can be tuned by the extent of chemical etching, which can be beneficial for the design of MXenes-based spintronic devices.

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“…The etching process may occur via a direct hydrofluoric acid treatment (harsh) been theoretically predicted to be stable. 3 The high elastic mechanical strength 4 , electronic conductivity 5,6 , chemical stability [7][8][9] , and hydrophilicity 10,11 of MXenes have opened broad prospects for their applications in a variety of industrial and technological areas including energy storage, optoelectronics, spintronics, catalysis, and sensing. [12][13][14][15][16][17][18][19][20][21][22][23] Although there is significant research effort in the optical 24,25 and electronic 11,26,27 properties of MXenes, the magnetic properties of these materials for spintronic application is relatively unexplored.…”

Section: Introductionmentioning

confidence: 99%

Tuning the Magnetic Properties of Two-Dimensional MXenes by Chemical Etching

Allen-Perry¹,

Straka²,

Keith³

et al. 2021

Preprint

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Two-dimensional materials based on transition metal carbides have been intensively studied due to their unique properties including metallic conductivity, hydrophilicity, and structural diversity and have shown great potential in several applications. While MXenes based on magnetic transition elements show interesting magnetic properties, not much is known about the magnetic properties of titanium-based MXenes. Here, we measured magnetic properties of Ti3C2Tx MXenes synthesized by different chemical etching conditions. Our measurements indicate that there is a paramagnetic–antiferromagnetic (PM-AFM) phase transition, and the transition temperature depends on the synthesis procedure of MXenes. Our observation indicates that the magnetic properties of these MXenes can be tuned by the extent of chemical etching which can be beneficial for the design of MXene-based spintronic devices.

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Green synthesis of reduced Ti₃C₂T_x MXene nanosheets with enhanced conductivity, oxidation stability, and SERS activity

Abstract: Surface engineering of ultrathin MXene nanosheets vial-ascorbic acid treatment under ambient conditions makes them more appealing for practical applications.

Cited by 105 publications

References 55 publications

Strain Sensing Coatings for Large Composite Structures Based on 2D MXene Nanoparticles

Strain Sensing Coatings for Large Composite Structures Based on 2D MXene Nanoparticles

Tuning the Magnetic Properties of Two-Dimensional MXenes by Chemical Etching

Tuning the Magnetic Properties of Two-Dimensional MXenes by Chemical Etching

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