Controllable nanoporous copper synthesized by dealloying metallic glasses: New insights into the tuning pore structure and applications

Li, Man; Liu, Jiangyun; Wang, Chaoyang; Liu, Yang; Sun, Yuntao; Qin, Chunling; Wang, Zhifeng; Li, Yongyan; Liu, Li; Liu, Shuming

doi:10.1016/j.cej.2021.130861

Cited by 8 publications

(8 citation statements)

References 47 publications

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“…66 The chemical dealloying method has also been recently used to prepare nanoporous copper by 0.5 M HF acid treatment of the melt-spun Cu-Zr-based metallic glasses at room temperature by varying the leaching time from 3 to 10 min. 67 The obtained nanoporous copper showed the homogeneous, bicontinuous, and nanoscale interpenetrating ligament/channel structure. Nanoporous copper was also prepared by immersing the melt-spun ribbons of parent alloy (Cu-Al) in a 2 M NaOH solution.…”

Section: Dealloying Pathwaysmentioning

confidence: 93%

“…Nanoporous copper was also prepared by immersing the melt-spun ribbons of parent alloy (Cu-Al) in a 2 M NaOH solution. 67 If the precursor alloy is a single-phase alloy such as Au-Ag, chemical dealloying will only be suitable for the fabrication of the noble metallic porous material, such as Au, Cu, Ag, and Pt (Figure 2), 42,44,45,48,68 as well as for a number of metallic amorphous materials such as Au 42 Cu 29 Ti 8 Si 21 and Ti 60 Cu4 0 . 46,47 If the precursor alloy has multiple phases, chemical dealloying will therefore lead to a porous material made of less-noble metal present across the original alloy because the different phases can form a galvanic cell, such as Fe−C (steel).…”

Section: Dealloying Pathwaysmentioning

confidence: 99%

“…The obtained nanoporous copper showed the homogeneous, bicontinuous, and nanoscale interpenetrating ligament/channel structure. Nanoporous copper was also prepared by immersing the melt-spun ribbons of parent alloy (Cu-Al) in a 2 M NaOH solution …”

Section: Dealloying Pathwaysmentioning

confidence: 99%

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Nanoporous Dealloyed Metal Materials Processing and Applications─A Review

Scandura

Kumari

Palmisano

et al. 2023

Ind. Eng. Chem. Res.

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The development of porous metal materials with pore geometries and sizes at the nanoscale offers promising opportunities for the development of smart responsive interfaces for separation and catalytic applications and as building blocks for complex composite materials. Dealloying is an innovative technique based on selective removal of a sacrificial metal from a metal alloy to engineer surface textures and pores across significant thicknesses. Dealloyed structures may be processed over large scales and for a range of source alloys, offering unprecedented manufacturing opportunities. This review presents the operations and challenges of dealloying routes and discusses avenues for process optimizations and improvements, aiming at the development of scalable nanoporous materials. The potential of dealloyed materials for catalytic and sensing applications is expanded and benchmarked against reference materials. Future prospects and applications of dealloyed materials toward surface reactivity control and pore architecture development are highlighted.

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Section: Dealloying Pathwaysmentioning

confidence: 93%

Section: Dealloying Pathwaysmentioning

confidence: 99%

See 1 more Smart Citation

Nanoporous Dealloyed Metal Materials Processing and Applications─A Review

Scandura

Kumari

Palmisano

et al. 2023

Ind. Eng. Chem. Res.

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show abstract

“…At the same time, deliberate control of oxide formation is of great importance for many applications including energy storage and sensing. 14,25,25,36 Studies of the dealloying and the electrochemical performance of dealloyed npCu will signicantly contribute to the fundamental understanding of the structural evolution. There are several methods for investigating dealloying processes (including X-ray scattering, [37][38][39] X-ray diffraction, 40 and electron microscopy 41,42 ), but most methods are surface specic and focus on small volumes.…”

Section: Introductionmentioning

confidence: 99%

“…At the same time, deliberate control of oxide formation is of great importance for many applications including energy storage and sensing. 14,25,25,36…”

Section: Introductionmentioning

confidence: 99%

Porosity evolution and oxide formation in bulk nanoporous copper dealloyed from a copper–manganese alloy studied by in situ resistometry

et al. 2023

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Tailoring Atomic Ordering Uniformity Enables Selectively Leached Nanoporous Pd‐Ni‐P Metallic Glass for Enhanced Glucose Sensing

Lou,

Li,

Yao

et al. 2024

Advanced Science

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Constructing nanostructures, such as nanopores, within metallic glasses (MGs) holds great promise for further unlocking their electrochemical capabilities. However, the MGs typically exhibit intrinsic atomic‐scale isotropy, posing a significant challenge in directly fabricating anisotropic nanostructures using conventional chemical synthesis. Herein a selective leaching approach, which focuses on tailoring the uniformity of atomic ordering, is introduced to achieve pore‐engineered Pd‐Ni‐P MG. This innovative approach significantly boosts the number of exposed active sites, thereby enhancing the electrochemical sensitivity for glucose detection. Electrochemical tests reveal that the nanoporous Pd‐Ni‐P MG exhibits high sensitivity (3.19 mA mm⁻¹ cm⁻2) and remarkable stability (97.7% current retention after 1000 cycles). During electrochemical cycling, synchrotron X‐ray pair distribution function and X‐ray absorption fine structure analyses reveal that the distance between active sites decreases, enhancing electron transport efficiency, while the medium‐range ordered structure of the Pd‐Ni‐P MG remains stable, contributing to its exceptional glucose sensing capabilities. A microglucose sensor is successfully developed by integrating the nanoporous Pd‐Ni‐P MG with a screen‐printed electrode, demonstrating the practical applicability. This study not only offers a new avenue for the design of highly active nanoporous MGs but also sheds light on the mechanisms behind the high electrochemistry performance of MGs.

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Controllable nanoporous copper synthesized by dealloying metallic glasses: New insights into the tuning pore structure and applications

Cited by 8 publications

References 47 publications

Nanoporous Dealloyed Metal Materials Processing and Applications─A Review

Nanoporous Dealloyed Metal Materials Processing and Applications─A Review

Porosity evolution and oxide formation in bulk nanoporous copper dealloyed from a copper–manganese alloy studied by in situ resistometry

Tailoring Atomic Ordering Uniformity Enables Selectively Leached Nanoporous Pd‐Ni‐P Metallic Glass for Enhanced Glucose Sensing

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