Azo dye degradation behavior of AlFeMnTiM (M = Cr, Co, Ni) high-entropy alloys

Wu, Shikai; Pan, Ye; Wang, Ning; Lü, Tao; Dai, Weiji

doi:10.1007/s12613-019-1716-x

Cited by 46 publications

(29 citation statements)

References 41 publications

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“…So, we design and synthesize three kinds of cobalt-free HEAs (AlCrFeMn, AlCrFeNi and FeCrNiMn) with equal-atomic ratios by ball milling. Among the three kinds of BM HEAs powders, we find that the bare BM AlCrFeMn powders show the fastest decolorization speed for DB6, 3 times faster than that of bare BM MgZn-based amorphous alloy, which is the best one of the alloy materials reported so far [20][21][22][23]. However, the bare Shikai Wu and Wei Gao have contributed equally to this work.…”

Section: Introductionmentioning

confidence: 90%

Co-Free High-Entropy Alloys Powders Immobilized by Electrospray and Microfluidics for Decolorization of Azo Dye

Gao

Lü

et al. 2020

Acta Metall. Sin. (Engl. Lett.)

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In recent years, high-entropy alloys (HEAs) have received more and more attention due to their unique microstructure and properties. Several researchers have reported that some ball-milled (BM) HEAs powders possess prominent decolorization performance for azo dyes. Three kinds of Co-free HEA powders (AlCrFeMn, AlCrFeNi and FeCrNiMn) have been synthesized by ball milling in this work, of which AlCrFeMn shows the best decolorization efficiency for DB6 aqueous solution. However, at this time, the BM HEAs are in powder state and not easy to be reused, so the loss rate of the powders is high during the reaction. Sometimes, the reaction between reacted the powders and the dye solution is too fast to control. While, in order to solve these problems, this work proposes to immobilize bare BM AlCrFeMn HEA powders in calcium alginate beads (CABs) by electrospray and microfluidics. Through four cycles of reaction, the loss rate of the AlCrFeMn powders can be reduced from 40 to 5 wt% if the powders are immobilized by CABs with an average diameter of 0.55 mm obtained at the DC voltage of 30 kV. In addition, in the four cycles of experiment, the AlCrFeMn HEA-CABs with an average diameter of 0.55 mm shows better stability and easier separation than that of the bare AlCrFeMn powders. These findings provide new ideas for HEAs to decolorize azo dyes and are of great significance for protecting freshwater resources.

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Section: Introductionmentioning

confidence: 90%

Co-Free High-Entropy Alloys Powders Immobilized by Electrospray and Microfluidics for Decolorization of Azo Dye

Gao

Lü

et al. 2020

Acta Metall. Sin. (Engl. Lett.)

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“…These characteristics significantly reduce the activation-energy barrier (∼30 kJ/mol), leading to reaction easier to occur compared to the Fe-based metallic glass (Figure 17). Furthermore, the AlFeMnTiM (M Cr, Co, and Ni) MPEAs have been successfully synthesized via mechanical alloying, which have high efficiency to the decolorizing of azo dye Direct Blue 6 (Wu et al, 2019). Especially, AlFeMnTiCr shows the best decolorizing efficiency and superior catalytic performance, whose degradation performance towards azo dye far exceeds that of common commercial Fe-Si-B amorphous alloy ribbons, even 100 times better than that of industrial zero-valent iron powders.…”

Section: Decolorizationmentioning

confidence: 99%

A Focused Review on Engineering Application of Multi-Principal Element Alloy

et al. 2022

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Compared with traditional alloys with one principal component up to 40–90%, multi-principal element alloys (MPEAs) were born in the complicated intermingling of traditional and non-traditional physical metallurgy, and brings us a great amount of excellent performances. Here, we would briefly summarize the potential applications in some key areas, which is helpful for latecomers to quickly and comprehensively understand this new alloy system. Especially, the applications of MPEAs in aerospace, industrial equipment, national defense, energy, navigation and so on are discussed roughly. Subsequently, several emerging areas have also been compared. Finally, some suggestions are given for the future development trend.

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“…Several thermodynamics models such as Gibbs energy and mixing entropy are proposed to design the solid solubility of the HEAs. Despite their excellent mechanical properties, [29] claimed HEAs have better catalytic performance than conventional alloys due to high surface area and vital adsorption energy derived from the multi-elements in HEAs.…”

Section: High Entropy Alloys (Heas)mentioning

confidence: 99%

“…The enthusiasm behind studying multi element alloys for use as a catalytic agent comes directly from the essential near continuous distribution of adsorption energy [30], high specific surface area [29], and unusual atomic structure with significant lattice distortion and residual stress. HEAs can provide a surface with many unique binding site conditions, resulting in the near-range dispersal of associated adsorption energies.…”

Section: High Entropy Alloys (Heas)mentioning

confidence: 99%

Metals and Alloys Additives as Enhancer for Rocket Propulsion: A Review

Ismail

Nordin

Azami

et al. 2021

ARFMTS

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A rocket's engine usually uses fuel and oxygen as propellants to increase the rocket's projection during launch. Nowadays, metallic ingredients are commonly used in the rocket’s operation to increase its performance. Metallic ingredients have a high energy density, flame temperature, and regression rate that are important factors in the propulsion process. There is a wide range of additives have been reported so far as catalysts for rocket propulsion. The studies show that the presence of metal additives improves the regression rate, specific impulse and combustion efficiency. Herein, the common energetic additives for rocket propulsion such as metal and light metals are reviewed. Besides the effect of these energetic particles on the regression behaviors of base (hybrid) fuel has been exclusively discussed. This paper also proposed a new alloy namely high entropy alloys (HEAs) as a new energetic additive that can potentially increase the performance of the rocket propellant system.

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Azo dye degradation behavior of AlFeMnTiM (M = Cr, Co, Ni) high-entropy alloys

Cited by 46 publications

References 41 publications

Co-Free High-Entropy Alloys Powders Immobilized by Electrospray and Microfluidics for Decolorization of Azo Dye

Co-Free High-Entropy Alloys Powders Immobilized by Electrospray and Microfluidics for Decolorization of Azo Dye

A Focused Review on Engineering Application of Multi-Principal Element Alloy

Metals and Alloys Additives as Enhancer for Rocket Propulsion: A Review

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