Fabrication of fine spongy nanoporous Ag-Au alloys with improved catalysis properties

Cuiting Li; Tao Zhang; Min Zhang; Yu Jin; Lei Zuo; Hongjie Xu; Ran Li

doi:10.1016/j.pnsc.2017.05.002

Fabrication of fine spongy nanoporous Ag-Au alloys with improved catalysis properties

Cuiting Li
, Tao Zhang^*
, Min Zhang
, Yu Jin
, Lei Zuo
, Hongjie Xu
, Ran Li

^*此作品的通讯作者

材料科学与工程学院

Beihang University
Beijing Jiaotong University

科研成果: 期刊稿件 › 文章 › 同行评审

4 引用（Scopus）

摘要

Fine NP-AgAu (nanoporous AgAu) alloys with spongy structure was fabricated by chemical dealloying from rapidly solidified amorphous precursors Ag_38.75−xCu_38.75Si_22.5Au_x (x=0, 0.5, 1 and 5). The results indicate that the addition of small content Au in precursor can refine both the ligaments and pores obviously. Among the present components of the precursors, NP-AgAu alloys dealloying from Ag_37.75Cu_38.75Si_22.5Au₁ had the finest spongy structure. The size of pores was 5–10 nm and the grain size of ligaments was 10–20 nm. It also had the highest surface area of 106.83 m²g⁻¹ and the best catalytic activity towards electro-oxidation of formaldehyde with the peak current of 665 mA mg⁻¹.

源语言	英语
页（从-至）	658-663
页数	6
期刊	Progress in Natural Science: Materials International
卷	27
期	6
DOI	https://doi.org/10.1016/j.pnsc.2017.05.002
出版状态	已出版 - 12月 2017

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10.1016/j.pnsc.2017.05.002

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@article{8dafea7f1c7d4c0db5937cb6879c2883,

title = "Fabrication of fine spongy nanoporous Ag-Au alloys with improved catalysis properties",

abstract = "Fine NP-AgAu (nanoporous AgAu) alloys with spongy structure was fabricated by chemical dealloying from rapidly solidified amorphous precursors Ag38.75−xCu38.75Si22.5Aux (x=0, 0.5, 1 and 5). The results indicate that the addition of small content Au in precursor can refine both the ligaments and pores obviously. Among the present components of the precursors, NP-AgAu alloys dealloying from Ag37.75Cu38.75Si22.5Au1 had the finest spongy structure. The size of pores was 5–10 nm and the grain size of ligaments was 10–20 nm. It also had the highest surface area of 106.83 m2g−1 and the best catalytic activity towards electro-oxidation of formaldehyde with the peak current of 665 mA mg−1.",

keywords = "Amorphous, Catalysis, Dealloying, Formaldehyde electro-oxidation, Nanoporous Ag-Au",

author = "Cuiting Li and Tao Zhang and Min Zhang and Yu Jin and Lei Zuo and Hongjie Xu and Ran Li",

note = "Publisher Copyright: {\textcopyright} 2017 Chinese Materials Research Society",

year = "2017",

month = dec,

doi = "10.1016/j.pnsc.2017.05.002",

language = "英语",

volume = "27",

pages = "658--663",

journal = "Progress in Natural Science: Materials International",

issn = "1002-0071",

publisher = "Elsevier B.V.",

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}

TY - JOUR

T1 - Fabrication of fine spongy nanoporous Ag-Au alloys with improved catalysis properties

AU - Li, Cuiting

AU - Zhang, Tao

AU - Zhang, Min

AU - Jin, Yu

AU - Zuo, Lei

AU - Xu, Hongjie

AU - Li, Ran

PY - 2017/12

Y1 - 2017/12

N2 - Fine NP-AgAu (nanoporous AgAu) alloys with spongy structure was fabricated by chemical dealloying from rapidly solidified amorphous precursors Ag38.75−xCu38.75Si22.5Aux (x=0, 0.5, 1 and 5). The results indicate that the addition of small content Au in precursor can refine both the ligaments and pores obviously. Among the present components of the precursors, NP-AgAu alloys dealloying from Ag37.75Cu38.75Si22.5Au1 had the finest spongy structure. The size of pores was 5–10 nm and the grain size of ligaments was 10–20 nm. It also had the highest surface area of 106.83 m2g−1 and the best catalytic activity towards electro-oxidation of formaldehyde with the peak current of 665 mA mg−1.

AB - Fine NP-AgAu (nanoporous AgAu) alloys with spongy structure was fabricated by chemical dealloying from rapidly solidified amorphous precursors Ag38.75−xCu38.75Si22.5Aux (x=0, 0.5, 1 and 5). The results indicate that the addition of small content Au in precursor can refine both the ligaments and pores obviously. Among the present components of the precursors, NP-AgAu alloys dealloying from Ag37.75Cu38.75Si22.5Au1 had the finest spongy structure. The size of pores was 5–10 nm and the grain size of ligaments was 10–20 nm. It also had the highest surface area of 106.83 m2g−1 and the best catalytic activity towards electro-oxidation of formaldehyde with the peak current of 665 mA mg−1.

KW - Amorphous

KW - Catalysis

KW - Dealloying

KW - Formaldehyde electro-oxidation

KW - Nanoporous Ag-Au

UR - https://www.scopus.com/pages/publications/85040539963

U2 - 10.1016/j.pnsc.2017.05.002

DO - 10.1016/j.pnsc.2017.05.002

M3 - 文章

AN - SCOPUS:85040539963

SN - 1002-0071

VL - 27

SP - 658

EP - 663

JO - Progress in Natural Science: Materials International

JF - Progress in Natural Science: Materials International

IS - 6

ER -

Fabrication of fine spongy nanoporous Ag-Au alloys with improved catalysis properties

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