Compelling Rejuvenated Catalytic Performance in Metallic Glasses

Shun Xing Liang, Zhe Jia, Yu Jing Liu, Wenchang Zhang, Weimin Wang, Jian Lu, Lai Chang Zhang

Research output: Contribution to journalArticle

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Abstract

Metallic glasses (MGs) with the metastable nature and random atomic packing structure have attracted large attention in the catalytic family due to their superior catalytic performance. In contrast, their crystalline counterparts are restricted by the highly ordered packing structure, fewer surface active sites, and crystallographic defects for catalytic activity. The uncertainty of the different catalytic mechanisms and the intrinsic characteristics correlated to MGs and their crystalline counterparts become a major impediment to promote their catalytic efficiencies and widespread applications. Herein, it is reported that the excellent catalytic behavior in Fe-based MGs goes through a detrimental effect with the partial crystallization, but receives a compelling rejuvenation in the full crystallization. Further investigation reveals that multiphase intermetallics with electric potential differences in fully crystallized alloys facilitate the formation of galvanic cells. More importantly, extensively reduced grain boundaries due to grain growth greatly weaken electron trapping and promote inner electron transportation. The relatively homogenous grain-boundary corrosion in the intermetallics contributes to well-separated phases after reaction, leading to refreshment of the surface active sites, thereby quickly activating hydrogen peroxide and rapidly degrading organic pollutants. The exploration of catalytic mechanisms in the crystalline counterparts of MGs provides significant insights into revolutionize novel catalysts.

Original languageEnglish
Article number1802764
JournalAdvanced Materials
Volume30
Issue number45
DOIs
Publication statusPublished - 8 Nov 2018

Fingerprint

Metallic glass
Crystallization
Crystalline materials
Intermetallics
Grain boundaries
Electrons
Organic pollutants
Grain growth
Hydrogen peroxide
Hydrogen Peroxide
Catalyst activity
Cells
Corrosion
Defects
Catalysts
Electric potential

Cite this

Liang, S. X., Jia, Z., Liu, Y. J., Zhang, W., Wang, W., Lu, J., & Zhang, L. C. (2018). Compelling Rejuvenated Catalytic Performance in Metallic Glasses. Advanced Materials, 30(45), [1802764]. https://doi.org/10.1002/adma.201802764
Liang, Shun Xing ; Jia, Zhe ; Liu, Yu Jing ; Zhang, Wenchang ; Wang, Weimin ; Lu, Jian ; Zhang, Lai Chang. / Compelling Rejuvenated Catalytic Performance in Metallic Glasses. In: Advanced Materials. 2018 ; Vol. 30, No. 45.
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Liang, SX, Jia, Z, Liu, YJ, Zhang, W, Wang, W, Lu, J & Zhang, LC 2018, 'Compelling Rejuvenated Catalytic Performance in Metallic Glasses' Advanced Materials, vol. 30, no. 45, 1802764. https://doi.org/10.1002/adma.201802764

Compelling Rejuvenated Catalytic Performance in Metallic Glasses. / Liang, Shun Xing; Jia, Zhe; Liu, Yu Jing; Zhang, Wenchang; Wang, Weimin; Lu, Jian; Zhang, Lai Chang.

In: Advanced Materials, Vol. 30, No. 45, 1802764, 08.11.2018.

Research output: Contribution to journalArticle

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