Energy- and cost-efficient NaCl-assisted synthesis of MAX-phase Ti3AlC2 at lower temperature

Liu, Anmin; Yang, Qiyue; Ren, Xuefeng; Meng, Fanning; Gao, Liguo; Gao, Mengfan; Yang, Yanan; Ma, Tingli; Wu, Gang

doi:10.1016/j.ceramint.2019.11.008

Cited by 51 publications

(16 citation statements)

References 62 publications

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“…Leonard et al synthesized several TMC nanowires such as Nb 4 C 3 , Cr 3 C 2 , TaC, and WC by the MSS (Figure S9). The MSS was also successful to synthesize complex nanostructured metal carbides such as Ti 3 AlC 2 and (Ta 0.25 Nb 0.25 Ti 0.25 V 0.25 )C. − The as-synthesized nanostructured Ti 3 AlC 2 was converted into Ti 3 C 2 by etching in hydrofluoric acid. , …”

Section: Other Nanomaterials Synthesized By the Mss Methodsmentioning

confidence: 99%

Recent Developments on Molten Salt Synthesis of Inorganic Nanomaterials: A Review

2021

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A wide range of inorganic nanomaterials with many fascinating properties and application potentials in widespread fields may be synthesized by wet chemical synthetic routes. To achieve scientific and commercial viability of nanomaterials with uniformity and scalability, it is necessary to develop efficient and cost-effective, preferably sustainable, methods. The molten salt synthesis (MSS) method is one such bottom-up technique to fabricate a wide variety of inorganic nanomaterials with tunable size, morphology, and surface characteristics. It is also environmentally friendly, cost-effective, simple to operate, easy to scale, and generalizable, etc. This review gives a critical overview on this emerging and rapidly developing method for making defect free nanomaterials in well-defined texture, surface, and morphology at a relatively low formation temperature. We have discussed its different aspects, including the role of molten salts, the choice of molten salts, the electrochemical aspects, some advanced modifications of the conventional MSS technique, and their implications. To show the most recent development on MSS synthesized inorganic nanomaterials, this review only encompasses the studies reported over the last six years (2015−2020). We have summarized technologically important and emerging families of inorganic nanomaterials such as metal oxides, fluorides, nitrides, silicides, chalcogenides, oxohalides, borides, and carbides. Finally, a few perspectives for the MSS method are highlighted. It is expected that this review will further attract scientists to explore the MSS method in making size-and shape-tunable nanomaterials.

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Section: Other Nanomaterials Synthesized By the Mss Methodsmentioning

confidence: 99%

Recent Developments on Molten Salt Synthesis of Inorganic Nanomaterials: A Review

2021

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“…Synthesis of Ti 3 C 2 : We prepared Ti 3 AlC 2 based on the reported NaCl-assisted method. [15] We poured 30 mL of hydrogen fluoride (HF) solution (40 wt%) into a plastic beaker. Then, we added 1 g Ti 3 AlC 2 to the HF solution and stirred well.…”

Section: Methodsmentioning

confidence: 99%

Electrocatalytic Synthesis of Ammonia Using a 2D Ti₃C₂ MXene Loaded with Copper Nanoparticles

et al. 2020

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As an energy‐saving and environmentally friendly ammonia synthesis method, electrocatalytic nitrogen reduction reaction (NRR) has received a great deal of attention. There is thus an urgent need to find high‐efficiency electrocatalysts for the NRR. In this work, a Cu/Ti3C2 composite catalyst was prepared and demonstrated excellent selectivity under environmental conditions, which could efficiently convert N2 into NH3 electrochemically. In 0.1 M KOH, Cu/Ti3C2 can achieve a high Faradaic efficiency of 7.31 % and a high NH3 production rate of 3.04 μmol h−1 cm−2 at −0.5 V vs. RHE. Moreover, the material also exhibits superior electrochemical stability and durability. At the same time, density functional theory (DFT) shows that, compared with Ti3C2, Cu/Ti3C2 exhibits a wider conduction and valence band and a larger Fermi level, thus indicating that Cu plays a vital role in the enhancement of the catalytic activity and conductivity of Ti3C2‐based materials. This work provides a feasible strategy for designing high‐efficiency MXene‐based NRR electrocatalysts.

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“…The preparation process of Ti 3 C 2 MXene was consistent with that reported previously. [58] RuCl 3 •nH 2 O and FeCl 3 • 6H 2 O with molar ratios of 2 : 8, 3 : 7, 4 : 6 were added into 70 mL N 2 -saturated deionized water, respectively. After stirring for 30 min, 0.2 g of etched MXene was added into the mixed solution and ultrasonic vibration was carried out for 15 min.…”

Section: Experimental Section Preparation Of Rufe@mxenementioning

confidence: 99%

Ru and Fe Alloying on a Two‐Dimensional MXene Support for Enhanced Electrochemical Synthesis of Ammonia

et al. 2022

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Compared with the energy-intensive Haber-Bosch process, the electrocatalytic nitrogen reduction reaction (NRR) is a promising approach for sustainable ammonia production. However, the design and development of electrocatalysts with high activity and selectivity is currently a major challenge. In this work, we successfully constructed RuFe bimetallic nanoparticles on a two-dimensional MXene support (RuFe@MXene) through a simple liquid phase reduction method. Benefiting from the rich surface chemistry and high electronic conductivity of MXene, as well as the synergistic effect between RuFe bimetals, the composite can efficiently synthesize ammonia under environmental conditions. Specifically, the NH 3 yield and Faraday efficiency of the prepared Ru 0.3 Fe 0.7 @MXene composite catalyst reaches 40.79 μg h À 1 cm À 2 and 15.25 % at À 0.4 V vs. RHE in 0.1 M KOH, which are significantly higher than that of the previously reported Ru@MXene. Moreover, the Ru 0.3 Fe 0.7 @MXene catalyst also exhibits outstanding electrochemical stability. The density of state (DOS) and the partial density of state (PDOS) of MXene, Fe@MXene, Ru@MXene, and RuFe@MXene were calculated by DFT to explore the synergistic effect of RuFe on the nitrogen reduction performance of MXene-based catalysts. This work guides the design of highperformance NRR electrocatalysts in the future.

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Energy- and cost-efficient NaCl-assisted synthesis of MAX-phase Ti3AlC2 at lower temperature

Cited by 51 publications

References 62 publications

Recent Developments on Molten Salt Synthesis of Inorganic Nanomaterials: A Review

Recent Developments on Molten Salt Synthesis of Inorganic Nanomaterials: A Review

Electrocatalytic Synthesis of Ammonia Using a 2D Ti₃C₂ MXene Loaded with Copper Nanoparticles

Ru and Fe Alloying on a Two‐Dimensional MXene Support for Enhanced Electrochemical Synthesis of Ammonia

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Energy- and cost-efficient NaCl-assisted synthesis of MAX-phase Ti3AlC2 at lower temperature

Cited by 51 publications

References 62 publications

Recent Developments on Molten Salt Synthesis of Inorganic Nanomaterials: A Review

Recent Developments on Molten Salt Synthesis of Inorganic Nanomaterials: A Review

Electrocatalytic Synthesis of Ammonia Using a 2D Ti3C2 MXene Loaded with Copper Nanoparticles

Ru and Fe Alloying on a Two‐Dimensional MXene Support for Enhanced Electrochemical Synthesis of Ammonia

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Electrocatalytic Synthesis of Ammonia Using a 2D Ti₃C₂ MXene Loaded with Copper Nanoparticles