Palladium-intercalated MXene membrane for efficient separation of H2/CO2: Combined experimental and modeling work

Wang, Qinsheng; Fan, Yiyi; Wu, Chengliang; Jin, Yun; Li, Claudia; Sunarso, Jaka; Meng, Xiuxia; Yang, Naitao

doi:10.1016/j.memsci.2022.120533

Cited by 23 publications

(14 citation statements)

References 48 publications

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“…This also suggests that the main component of the catalyst was NiO, verifying that the catalyst was successfully generated. Based on the XPS spectra of MXene (Ti 3 C 2 T X ), we noticed that it contained Ti, C, O, and F with four terminating groups on the surface, including −O–, −OH, −F, and −OH–H 2 O (Figure c), consistent with a previous study . Lastly, the FT-IR spectra of the MXene membrane exhibited the presence of high hydrophilic functional groups (−OH and −O–, and these groups are represented by T x ) on its nanosheet surfaces (Figure d).…”

Section: Resultssupporting

confidence: 87%

“…36,37 MXene materials are also expected to play an important role in gas separation given their mechanical stability and unique layered structure. 38,39 Besides that, catalysts are essential in the NH 3 decomposition reaction, and the supported catalyst should have low activity at low temperatures. 40 In other words, using appropriate additives can enhance the activity of the catalyst and reduce the reaction temperature.…”

Section: Introductionmentioning

confidence: 99%

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Membrane Reactor Supported by MXene (Ti₃C₂T_X) for Hydrogen Production by Ammonia Decomposition

Jin

Fan

et al. 2023

Energy Fuels

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Hydrogen (H 2 ) production by ammonia (NH 3 ) decomposition offers a solution to the energy problem. In this work, an MXene (titanium carbide, Ti 3 C 2 T X ) membrane was successfully synthesized by depositing it onto the anodic aluminum oxide (AAO) substrate using vacuum-assisted filtration. Then, a membrane reactor supported by MXene was developed for H 2 production by NH 3 decomposition. The MXene membrane reactor could achieve an H 2 permeance of 2.85 × 10 −7 mol m −2 s −1 Pa −1 and an H 2 / N 2 selectivity of 20 at 773.15 K. Next, a Ni-La/γ-Al 2 O 3 catalyst prepared by impregnation and sintering was added to catalyze the NH 3 decomposition process. The experimental results showed that the reactor could achieve a 99% NH 3 conversion at 773.15 K, i.e., 9% higher than that of the packed catalytic reactor (without membrane). A mathematical model of the membrane reactor was developed to explain the experimental results. The calculated activation energies (E ad ) of the MXene membrane for H 2 and N 2 permeances were 64.95 and 69.53 kJ mol −1 , respectively. The activation energy (E ar ) of NH 3 decomposition was 147.8 kJ mol −1 . Both the experimental and modeling results showed that the membrane reactor could enhance NH 3 conversion and promote the production of high-purity H 2 .

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Section: Resultssupporting

confidence: 87%

Section: Introductionmentioning

confidence: 99%

Membrane Reactor Supported by MXene (Ti₃C₂T_X) for Hydrogen Production by Ammonia Decomposition

Jin

Fan

et al. 2023

Energy Fuels

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“…To reveal the gas separation performance of MXene membranes, we compiled the data of free-standing MXene membranes in the early published studies and plotted them on the Robeson diagram as illustrated in Figure (a). Concerning the H 2 /CO 2 and H 2 /N 2 separation performances of MXene membranes, ,− they revealed H 2 /CO 2 separation well above the upper bound and H 2 /N 2 separation in the range of upper bound line exceeding the other 2D membranes. Mainly, this performance was attributed to its subnanometer interlayer spacing between the well-aligned and regular MXene nanosheets, which behave as a molecular sieving membrane.…”

Section: Gas Separationmentioning

confidence: 91%

“…Fan et al 147 reported superior improvement in binary H 2 /CO 2 selectivity of MXene intercalated with Ni 2+ ions (615) compared to the pristine one (215), yielding in almost 3-fold increase. MXene intercalated with Pd 2+ ions also displayed satisfactory binary H 2 /CO 2 selectivity as 242, 145 although not so high as that of MXene intercalated with Ni 2+ ions. 147 It was proposed that cationic intercalation is a vital approach to tune interlayer spacing by weakening repulsive electrostatic interactions and promoting a strong interaction between MXene nanosheets, which leads to regular channel size.…”

Section: Gas Separationmentioning

confidence: 99%

Can MXene be the Effective Nanomaterial Family for the Membrane and Adsorption Technologies to Reach a Sustainable Green World?

Massoumılari

Velioğlu

2023

ACS Omega

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Environmental pollution has intensified and accelerated due to a steady increase in the number of industries, and exploring methods to remove hazardous contaminants, which can be typically divided into inorganic and organic compounds, have become inevitable. Therefore, the development of efficacious technology for the separation processes is of paramount importance to ensure the environmental remediation. Membrane and adsorption technologies garnered attention, especially with the use of novel and high performing nanomaterials, which provide a target-specific solution. Specifically, widespread use of MXene nanomaterials in membrane and adsorption technologies has emerged due to their intriguing characteristics, combined with outstanding separation performance. In this review, we demonstrated the intrinsic properties of the MXene family for several separation applications, namely, gas separation, solvent dehydration, dye removal, separation of oil-in-water emulsions, heavy metal ion removal, removal of radionuclides, desalination, and other prominent separation applications. We highlighted the recent advancements used to tune separation potential of the MXene family such as the manipulation of surface chemistry, delamination or intercalation methods, and fabrication of composite or nanocomposite materials. Moreover, we focused on the aspects of stability, fouling, regenerability, and swelling, which deserve special attention when the MXene family is implemented in membrane and adsorption-based separation applications.

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“…Wang et al [ 102 ] modeled the contribution of permeability to total transport through direct and bypass nanotunnels:

where f str and f tor are fractional gas permeance through direct and circuitous nanotunnels, respectively ( Figure 9 ).…”

Section: Mxenementioning

confidence: 99%

Recent Advances on Membranes for Water Purification Based on Carbon Nanomaterials

et al. 2022

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Every year the problem of water purification becomes more relevant. This is due to the continuous increase in the level of pollution of natural water sources, an increase in the population, and sharp climatic changes. The growth in demand for affordable and clean water is not always comparable to the supply that exists in the water treatment market. In addition, the amount of water pollution increases with the increase in production capacity, the purification of which cannot be fully handled by conventional processes. However, the application of novel nanomaterials will enhance the characteristics of water treatment processes which are one of the most important technological problems. In this review, we considered the application of carbon nanomaterials in membrane water purification. Carbon nanofibers, carbon nanotubes, graphite, graphene oxide, and activated carbon were analyzed as promising materials for membranes. The problems associated with the application of carbon nanomaterials in membrane processes and ways to solve them were discussed. Their efficiency, properties, and characteristics as a modifier for membranes were analyzed. The potential directions, opportunities and challenges for application of various carbon nanomaterials were suggested.

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Palladium-intercalated MXene membrane for efficient separation of H2/CO2: Combined experimental and modeling work

Cited by 23 publications

References 48 publications

Membrane Reactor Supported by MXene (Ti₃C₂T_X) for Hydrogen Production by Ammonia Decomposition

Membrane Reactor Supported by MXene (Ti₃C₂T_X) for Hydrogen Production by Ammonia Decomposition

Can MXene be the Effective Nanomaterial Family for the Membrane and Adsorption Technologies to Reach a Sustainable Green World?

Recent Advances on Membranes for Water Purification Based on Carbon Nanomaterials

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Palladium-intercalated MXene membrane for efficient separation of H2/CO2: Combined experimental and modeling work

Cited by 23 publications

References 48 publications

Membrane Reactor Supported by MXene (Ti3C2TX) for Hydrogen Production by Ammonia Decomposition

Membrane Reactor Supported by MXene (Ti3C2TX) for Hydrogen Production by Ammonia Decomposition

Can MXene be the Effective Nanomaterial Family for the Membrane and Adsorption Technologies to Reach a Sustainable Green World?

Recent Advances on Membranes for Water Purification Based on Carbon Nanomaterials

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Membrane Reactor Supported by MXene (Ti₃C₂T_X) for Hydrogen Production by Ammonia Decomposition

Membrane Reactor Supported by MXene (Ti₃C₂T_X) for Hydrogen Production by Ammonia Decomposition