Rapid one-step scalable microwave synthesis of Ti3C2Tx MXene

Zhu, Jing; Zhang, Jingyi; Lin, Ruiming; Fu, Benwei; Song, Chengyi; Shang, Wen; Tao, Peng; Deng, Tao

doi:10.1039/d1cc04989e

Cited by 28 publications

(8 citation statements)

References 41 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

Section: Direct Absorption Solar–thermal Pcm Compositesmentioning

confidence: 99%

“…26,27 To accelerate scalable fabrication of the MXene absorbers, we explored a one-step microwave heating-based exfoliation approach, which could shorten the preparation time of Ti 3 C 2 T x from tens of hours to 15 min and avoid the usage of organic delamination compounds. 28 Moreover, the small lateral size of the synthesized high-quality MXene favors achieving stable colloidal dispersion and superior photothermal conversion performance (Figure 2e).…”

Section: Stably Dispersed Particulate Solar Absorbersmentioning

confidence: 99%

“…In order to achieve uniform dispersion within paraffin wax, the surfaces of the Fe 3 O 4 @graphene particles were capped with oleylamine ligands, which prevent direct contact between neighboring particles and provide steric hindrance against aggregation (Figure d). MXene, namely, two-dimensional (2D) layered metal carbides and nitrides, has emerged as another rising star for solar–thermal conversion owing to their high optical absorbance, high conductivity, good chemical stability, and rich surface chemistry. , To accelerate scalable fabrication of the MXene absorbers, we explored a one-step microwave heating-based exfoliation approach, which could shorten the preparation time of Ti 3 C 2 T x from tens of hours to 15 min and avoid the usage of organic delamination compounds . Moreover, the small lateral size of the synthesized high-quality MXene favors achieving stable colloidal dispersion and superior photothermal conversion performance (Figure e).…”

Section: Direct Absorption Solar–thermal Pcm Compositesmentioning

confidence: 99%

See 2 more Smart Citations

Solid–Liquid Phase Change Composite Materials for Direct Solar–Thermal Energy Harvesting and Storage

Liu

et al. 2023

Acc. Mater. Res.

Self Cite

View full text Add to dashboard Cite

Metrics & MoreArticle Recommendations * sı Supporting Information CONSPECTUS: Solar−thermal energy storage (STES) is an effective and attractive avenue to overcome the intermittency of solar radiation and boost the power density for a variety of thermal related applications. Benefiting from high fusion enthalpy, narrow storage temperature ranges, and relatively low expansion coefficients, solid−liquid phase change materials (PCMs) have been viewed as one of the promising candidates for large-capacity STES. Organic and inorganic PCMs, however, generally suffer from poor solar absorption, slow thermal diffusion, and leakage problems, which seriously limit their direct STES applications. Preparing composites through compounding functional fillers with PCMs has been investigated as the mainstream route to enhance their thermophysical properties, but optimizing the charging, storage, and discharging performances of PCM systems remains a grand challenge. Most often, improved STES performances were achieved at the sacrifice of reduced energy storage capacity. Simultaneous enhancement of STES performances has been viable in recent years through fabricating PCM composites with lightly loaded functional fillers and tailoring their heat diffusion and solid−liquid phase change kinetics.In this Account, we discuss recent progress in developing large-capacity solid−liquid STES PCM composites that can achieve rapid direct charging, long-term stable storage, and controlled heat release. Such lightly loaded composites take advantage of rapid transportation of solar photons within PCMs to achieve fast direct absorption-based harvesting and storage of solar−thermal energy. Dynamic manipulation of the solar absorbers by external fields can further accelerate the charging process. Moreover, tuning the interaction between the surfaces of solar absorbers and the PCM molecules not only enables seasonable storage of harvested solar− thermal energy under supercooled states but also allows for controllable heat release through triggering the cold crystallization process. First, we describe design and engineering principles of such direct absorption-based solar−thermal PCM composites.Emphases are placed on introducing the desired features of the solar absorbers to comprehensively enhance thermophysical properties of the lightly loaded PCM composites including solar absorptance, thermal conductivity, form stability, and reduced supercooling through tailoring the size, morphology, and surface chemistry of fillers. We further elaborate the movable charging strategies within which minute solar absorbers are driven by external fields to directionally advance the solid−liquid phase-changing interface, thereby accelerating the charging rates while fully retaining the large latent heat storage capacity of PCMs. The latest development of PCM composites that are capable of stably storing solar−thermal energy as latent heat at room temperature for months or even years is also introduced. In the end, emerging applications of direct absorption-based PCM...

show abstract

Section: Direct Absorption Solar–thermal Pcm Compositesmentioning

confidence: 99%

Section: Stably Dispersed Particulate Solar Absorbersmentioning

confidence: 99%

Section: Direct Absorption Solar–thermal Pcm Compositesmentioning

confidence: 99%

See 1 more Smart Citation

Solid–Liquid Phase Change Composite Materials for Direct Solar–Thermal Energy Harvesting and Storage

Liu

et al. 2023

Acc. Mater. Res.

Self Cite

View full text Add to dashboard Cite

show abstract

“…Notable is that the method, etchant selection, concentration, and reaction duration all impact the properties of the resultant MXene. [45][46][47][48] Typically, HF etched MAX phases have a large fraction of fluorine atoms on the surface, which impacts their stability. Thus, altering the HF concentration during the etchant process alters the ratio of surface functional groups (hydroxyl, oxygen, or fluorine), their resistance to oxidation, hydrophilicity, the ability of water to penetrate the MXene layers, and their ease of functionalization.…”

Section: The Top-down Approachmentioning

confidence: 99%

MXenes: state-of-the-art synthesis, composites and bioapplications

Fadahunsi

Khan

et al. 2022

J. Mater. Chem. B

View full text Add to dashboard Cite

show abstract

“…It is therefore unsurprising that in recent years, a notable shift in the use of microwaves in chemical reaction engineering and synthesis has occurred. [3][4][5][6][7][8][9][10] Microwave heating has been reported to enhance the rate of chemical reactions and in some cases even increase the selectivity of products formed, [11,12] although there remains considerable controversy on how this is achieved. [13][14][15] The ability to use microwaves to thermally drive chemical reactions when combined with suitable techniques to study the intermediates formed, is therefore most appealing.…”

Section: Introductionmentioning

confidence: 99%

An in-situ study of the thermal decomposition of AIBN radical chemistry using a dual mode EPR resonator

Magri

Barter

Fletcher-Charles

et al. 2022

Preprint

View full text Add to dashboard Cite

A custom-built dual mode EPR resonator was used to study the radical chemistry of AIBN thermal decomposition. This resonator enables both simultaneous in situ heating using microwaves and EPR measurements to be performed. The thermal decomposition of AIBN was compared following conventional heating methods and microwave induced (or dielectric) heating methods. Under both heating conditions, the radicals formed and detected by EPR include the 2-cyano-2-propyl (CP●) and 2-cyano-2-propoxyl (CPO●) radicals. Under aerobic conditions, the observed relative distribution of these radicals as observed by EPR is similar following slow heating by conventional or dielectric methods. In both conditions, the kinetically favored CPO● radicals and their adducts dominate the EPR spectra up to temperatures of approximately 80-90 °C. Under anaerobic conditions, the distribution can be altered as less CPO● is available. However, the observed results are notably different when rapid heating (primarily applied using a MW induced T-jump) is applied. As the higher reaction temperatures are achieved on a faster time scale, none of the ST●-CPO adducts are actually visible in the EPR spectra. The more rapid and facile heating capabilities created by microwaves may therefore lead to the non-detection of radical intermediates compared to experiments performed using conventional heating methods.

show abstract

Rapid one-step scalable microwave synthesis of Ti₃C₂T_x MXene

Abstract: We demonstrate a rapid one-step scalable microwave heating-based method to synthesize high-quality Ti3C2Tx MXenes with a tailorable size and superior NIR photothermal conversion performance.

Cited by 28 publications

References 41 publications

Solid–Liquid Phase Change Composite Materials for Direct Solar–Thermal Energy Harvesting and Storage

Solid–Liquid Phase Change Composite Materials for Direct Solar–Thermal Energy Harvesting and Storage

MXenes: state-of-the-art synthesis, composites and bioapplications

An in-situ study of the thermal decomposition of AIBN radical chemistry using a dual mode EPR resonator

Contact Info

Product

Resources

About