Novel Cu–Ag bimetallic porous nanomembrane prepared from a multi-component metallic glass

Liu, Xue; Chen, Na; Gu, Jia-Lun; Du, Jing; Yao, K.

doi:10.1039/c5ra08332j

Cited by 15 publications

(10 citation statements)

References 34 publications

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“…The surface is uniformly corroded, and no pitting is found. The nodular corrosion products are loosely packed on the surface, which is quite similar to the dealloying process . Figure d–f show the surface morphologies of the crystalline Pd‐Ni‐P alloy at different magnification.…”

Section: Resultssupporting

confidence: 67%

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Electrochemical corrosion resistance of the amorphous and crystalline Pd‐based alloys in simulated seawater

Yang

Chen

et al. 2018

Materials & Corrosion

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Bulk metallic glasses have been studied and developed as engineering materials due to their outstanding mechanical properties. Corrosion resistance of the bulk metallic glasses is a crucial factor to be considered for their practical applications. In recent years, corrosion properties of a series of amorphous alloys and their crystalline counterparts in corrosive solutions have been reported, but researches on Pd‐based alloys are rare. In this paper, the corrosion behaviors of the amorphous and crystalline Pd40.5Ni40.5P19 and Pd77.5Cu6Si16.5 alloys in simulated seawater were investigated. It is found that the surface of both amorphous and crystalline Pd40.5Ni40.5P19 alloys is uniformly corroded without pitting. The corrosion resistance of the crystalline Pd40.5Ni40.5P19 alloy is superior than that of the amorphous Pd40.5Ni40.5P19 alloy due to the inert phosphides and noble palladium phases formed after crystallization. However, different‐sized pitting holes are found on the surface of both amorphous and crystalline Pd77.5Cu6Si16.5 alloys, and the amorphous Pd77.5Cu6Si16.5 alloy shows better corrosion resistance than its crystalline counterpart. This phenomenon may be associated with Cu‐rich phase on the surface of the crystalline Pd77.5Cu6Si16.5 alloy, which promotes the nucleation of the pitting.

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Section: Resultssupporting

confidence: 67%

“…The nodular corrosion products are loosely packed on the surface, which is quite similar to the dealloying process. [18] Figure 4d-f show the surface morphologies of the crystalline Pd-Ni-P alloy at different magnification. The grain size of the crystalline Pd-Ni-P alloy is in the range of 50-100 µm as shown in Figure 4e.…”

Section: Resultsmentioning

confidence: 99%

Electrochemical corrosion resistance of the amorphous and crystalline Pd‐based alloys in simulated seawater

Yang

Chen

et al. 2018

Materials & Corrosion

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“…In ASW, the metal elements in MZC MG are more likely to lose electrons into ions in comparison with those in DW, leading to the faster formation of ZnO-like nano-plates, which could be responsible for the rapid degradation of azo dyes. As is known, the chemical activity of metal elements is different, which has been regarded as the theoretical basis of dealloying [21]. In Mg-based and Ca-based MG, Mg and Ca are dissolved first, and other inactive elements, such as Cu, Y and Ag, are remained and formed into nanoporous materials [22].…”

Section: Discussionmentioning

confidence: 99%

Rapid Degradation of Azo Dyes by Melt-Spun Mg-Zn-Ca Metallic Glass in Artificial Seawater

Chen

et al. 2017

Metals

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Mg-Zn-Ca metallic glass (MG) is effective for degrading azo dyes; however, the related surface evolution and degradation mechanisms are little known. We comparatively investigated the initial surface corrosion morphologies of melt-spun Mg 66 Zn 30 Ca 4 MG in deionized water and artificial seawater. It was found that the basic corrosion behavior of the MG was the same, except that the corrosion process was accelerated in seawater. The presence of NaCl obviously promotes the formation of nano-ZnO on the surface of ribbons, causing the rapid degradation of azo dyes due to the photocatalytic effect. The degradation efficiency when combined with 3.5 wt % NaCl was over 100 times higher than that without NaCl. This indicates that Mg-Zn-Ca MG ribbons are effective additives for the degradation of azo dyes in seawater.

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“…[12] Since the discovery of metallic glass, researchers have been working on improving the MG surface area, through which dealloying has proven to be an important technique. [76] In order to further improve the electrocatalytic activity and durability of these metallic glass nanowires, as well as expand its versatile applications to other energy storage fields, Doubek et al applied both the subtractive (dealloying) and additive (galvanic displacement, underpotential deposition and electrochemical deposition) surface modification techniques to these nanowires, as shown in Figure 8. Liu et al reported a Cu-Ag bimetallic porous nanomembrane through dealloying of multicomponent metallic glass.…”

Section: Electrochemical Modificationmentioning

confidence: 99%

“…Liu et al reported a Cu-Ag bimetallic porous nanomembrane through dealloying of multicomponent metallic glass. [76] In order to further improve the electrocatalytic activity and durability of these metallic glass nanowires, as well as expand its versatile applications to other energy storage fields, Doubek et al applied both the subtractive (dealloying) and additive (galvanic displacement, underpotential deposition and electrochemical deposition) surface modification techniques to these nanowires, as shown in Figure 8. [12] Subtractive dealloying from multicomponent bulk metallic glasses yields 3D nanoporous structures with increased electrochemical surface area.…”

Section: Electrochemical Modificationmentioning

confidence: 99%

Recent Advances in Metallic Glass Nanostructures: Synthesis Strategies and Electrocatalytic Applications

Doubek

McMillon‐Brown

et al. 2018

Advanced Materials

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transformers [2] and load bearing applications. [3] In the last few decades, the study of nanomaterials has become a central focus in nanoscience and nanotechnology. [4] In fact, many studies have shown that with reduction in size, nanomaterials display novel electrical, mechanical, chemical and optical properties, which are largely believed to be the result of surface and quantum confinement effects. [4,5] Remarkably, this trend has found traction in the metallic glass field where metallic glasses nanostructures (MGNs) demonstrate an important role in many applications such as light harvesting, [6] photovoltaic, [7] biomedical, [8] magneto-optical, [9] organic synthesis, [10] lithium-ion batteries [11] and electrocatalysis. [12] Recently, MGNs are receiving increased attention due to their distinguished performance, such as high activity and long term stability in electrocatalytic reactions. [12,13] Although several review papers have already covered the topic of nanopatterning of bulk metallic glasses (BMGs), [14][15][16] the correlation between recent synthetic methods and electrocatalytic applications for MGNs has not been thoroughly addressed. Moreover, there is currently no review that unites MGNs synthesized from different approaches (top-down and bottom-up) with conventional electrochemical reactions. Therefore, in this review our mission is to: 1) present a focused perspective on the latest fabrication techniques of MGNs toward the pursuit of novel electrocatalysts and electrodes; 2) highlight recent advances in computational screening and predictions that could be applied toward new metallic glass electrocatalyst discovery; and 3) report distinct advancements in electrocatalytic applications related to MGNs by creating a comprehensive discussion for commonly employed kinetic parameters and their connection with the unique material structure. Finally, as the first progress report on the metallic glass based electrocatalysts, we will also highlight some of the challenges that need to be addressed toward future progress in this field.BMGs are those metallic glasses (MGs) that can be made in 'bulk' scale with good glass forming abilities, [17] representing a versatile platform for many applications. To date, a wide range of BMG-forming alloys have been developed, including Zr-, [18] Fe-, [19] Cu-, [20] Ni-, [21] Ti-, [22] Mg-, [23] Pd-, [24] Au-, [25] and Pt-based compositions. [26] Moreover, the increased disorder brought by the higher degree of multinary systems is believed to contribute to improving the glass formation. [27] The evolution to multicomponent alloys of the most recent MG studies has also made them natural candidates for catalysis. The amorphous multinary Recent advances in metallic glass nanostructures (MGNs) are reported, covering a wide array of synthesis strategies, computational discovery, and design solutions that provide insight into distinct electrocatalytic applications. A brief introduction to the development and unique features of MGNs with an overview of top-down and bottom-up sy...

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Novel Cu–Ag bimetallic porous nanomembrane prepared from a multi-component metallic glass

Cited by 15 publications

References 34 publications

Electrochemical corrosion resistance of the amorphous and crystalline Pd‐based alloys in simulated seawater

Electrochemical corrosion resistance of the amorphous and crystalline Pd‐based alloys in simulated seawater

Rapid Degradation of Azo Dyes by Melt-Spun Mg-Zn-Ca Metallic Glass in Artificial Seawater

Recent Advances in Metallic Glass Nanostructures: Synthesis Strategies and Electrocatalytic Applications

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