Compelling Rejuvenated Catalytic Performance in Metallic Glasses

Liang, Shun-Xing; Jia, Zhe; Liu, Yujing; Zhang, Wenchang; Wang, Weimin; J, Lu; Zhang, Lai-Chang

doi:10.1002/adma.201802764

Cited by 118 publications

(69 citation statements)

References 55 publications

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“…It was found that more boron content corresponded to a higher degradation efficiency. Although the result is different from Yao's experiments on Fe−B alloys, it is consistent with recent studies of Fe‐based system . This result, together with our previous one, confirmed that the addition of boron, regardless of crystallinity, can improve the degradation efficiency, and the crystalline composition had slightly better efficiency than the Fe‐based glasses.…”

Section: Resultssupporting

confidence: 84%

“…In order to evaluate the stability of amorphous iron‐based catalysts, structural relaxation and crystallization experiments have been carried out by many research groups . Xie et al.…”

Section: Introductionmentioning

confidence: 99%

“…Similarly, Liang et al. prepared amorphous alloy ribbons of Fe 78 Si 9 B 13 and Fe 73.5 Si 13.5 B 9 Cu 1 Nb 3 by melt spinning and annealed them at temperatures from 350–950 °C . They found that the amorphous Fe 78 Si 9 B 13 ribbon completely crystallized after annealing at 900 °C and had the highest degradation rate for methylene blue, nearly three times higher than that of one partially crystallized by annealing at 600 °C.…”

Section: Introductionmentioning

confidence: 99%

“…While there is growing evidence that the degradation efficiency of amorphous alloys can be improved by complete crystallization, the factors controlling this phenomenon are not yet clear. Some researchers have suggested that annealing to achieve a large grain size is the key factor favoring the reaction rate, while others have found nano‐crystallization also has an excellent degradation effect . Actually, many considerations should be examined to elucidate the degradation mechanisms for amorphous and crystalline iron alloys and possible interactions between the amorphous and crystalline phases in the degradation process cannot be ignored.…”

Section: Introductionmentioning

confidence: 99%

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The Pivotal Role of Boron in Improving the Azo Dye Degradation of Glassy Fe‐based Catalysts

Xie

Kruzic

et al. 2020

ChemCatChem

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Fe‐based metallic glasses have been confirmed to degrade azo dyes effectively, however, a detailed understanding, of the role of alloying elements and crystallization is still elusive. Herein, it is reported that boron‐facilitated hybrid structures greatly improve the degradation of methyl orange (MO) and the degrading rate can be further improved by 2.5 times after fully crystallization. Three distinct types of galvanic cells created by different iron‐containing phases are believed to dominate the degradation reactions. Most notably, some FeB‐based compounds precipitated from FeB‐based metallic glasses, such as Fe2B, FeB and Fe5SiB2, are found to have more negative electrode potential and higher catalytic efficiency than iron. These compounds create galvanic cells with α‐Fe and lose electrons, therefore promoting the degradation reaction. The favorable effects of the FeB‐based compounds are discussed at the light of their electron densities and energy band structures. These findings open a new research strategy to developing iron‐bearing catalysts for improved degradation of azo dyes.

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Section: Resultssupporting

confidence: 84%

“…In order to evaluate the stability of amorphous iron‐based catalysts, structural relaxation and crystallization experiments have been carried out by many research groups . Xie et al.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

The Pivotal Role of Boron in Improving the Azo Dye Degradation of Glassy Fe‐based Catalysts

Xie

Kruzic

et al. 2020

ChemCatChem

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“…The better catalytic performance of the metallic glassy catalyst was thus related to the enhanced electron transfer ability, which may be originated from the easier activation of electrons around the randomly disordered atoms with weak atomic bonding in the amorphous state. More recently, with further crystalizing the ternary Fe‐based metallic glass by thermal treatment, they found compelling rejuvenation of the catalytic efficiency in degradation of organic pollutants . That is, the catalytic activity first deceases rapidly with increasing volume of crystals in the amorphous matrix, but it recovers to a value comparable to the fully amorphous state when the sample is fully crystallized, as depicted in Figure C.…”

Section: Functional Properties Of Metallic Glasses In Electrocatalysismentioning

confidence: 97%

Functional Applications of Metallic Glasses in Electrocatalysis

Sun

2019

ChemCatChem

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Metallic glasses (MGs), which are also known as amorphous metals, are formed by quenching the melts at a super high cooling rate (e. g. 106 K/s) to avoid crystallization. Compared with ordinary metals, there is no long‐range translational order and crystalline defects in MGs. Benefitting from this unique structural characteristic, MGs show many superior mechanical, physical and chemical properties and thus have been attracting intensive attentions in applications as structural materials. The investigations on the functional properties of MGs are still at the early stage, but immense potential in electrochemically functional applications has been demonstrated in recent years. In this Minireview, we aim to present an overview of the functional properties of this class of novel metallic glassy catalysts and some achievements obtained so far. We mainly focus on the applications of MGs in various electrochemical applications, like hydrogen evolution reaction and oxygen evolution reaction as well as fuel cells. The strategies for optimizing the performance of these amorphous catalysts are discussed as well, including high‐throughput screening and nano‐engineering. In the absence of crystalline ordering, the atomic‐scale structural mechanism of MGs in electrocatalysis may be unique and will be explored. Finally, we also give perspectives on how to design novel and superior electrocatalysts for future electrocatalysis applications.

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Surface Modification of Titanium and Titanium Alloys: Technologies, Developments, and Future Interests

2020

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Thanks to a considerable number of fascinating properties, titanium (Ti) and Ti alloys play important roles in a variety of industrial sectors. However, Ti and Ti alloys could not satisfy all industrial requirements; the degradation of Ti and Ti alloys always commences on their surfaces in service, which declines the performances of Ti workpieces. Therefore, with aim to further improve their mechanical, corrosion and biological properties, surface modification is often required for Ti and Ti alloys. This article reviews the technologies and recent developments of surface-modification methods with respect to Ti and Ti alloys, including mechanical, physical, chemical, and biochemical technologies. Conventional methods have limited improvement in the properties and/or restriction on the geometry of workpieces. Therefore, many advanced surfacemodification technologies have emerged in recent decades. New methods make Ti and Ti alloys have better performance and extended applications. With requirement of high surface properties in future. Understanding the mechanism in various surface-modification methods, combining the advantages of current technologies and developing new coating materials with high performance are required urgently. As such, incorporation of different surface-modification technologies with high-performance modified layers may be the mainstream of surface modifications for Ti and Ti alloys. . His current research interests focus on the metal additive manufacturing (e.g., selective laser melting, electron beam melting), titanium alloys and composites, and processing-microstructureproperties in high-performance materials.

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Compelling Rejuvenated Catalytic Performance in Metallic Glasses

Cited by 118 publications

References 55 publications

The Pivotal Role of Boron in Improving the Azo Dye Degradation of Glassy Fe‐based Catalysts

The Pivotal Role of Boron in Improving the Azo Dye Degradation of Glassy Fe‐based Catalysts

Functional Applications of Metallic Glasses in Electrocatalysis

Surface Modification of Titanium and Titanium Alloys: Technologies, Developments, and Future Interests

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