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

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

4 Citations (Scopus)

Abstract

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.

Original language	English
Pages (from-to)	658-663
Number of pages	6
Journal	Progress in Natural Science: Materials International
Volume	27
Issue number	6
DOIs	https://doi.org/10.1016/j.pnsc.2017.05.002
Publication status	Published - Dec 2017
Externally published	Yes

Keywords

Amorphous
Catalysis
Dealloying
Formaldehyde electro-oxidation
Nanoporous Ag-Au

Access to Document

10.1016/j.pnsc.2017.05.002

Cite this

@article{0177177d2ca34533817692735236b42d,

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 = "English",

volume = "27",

pages = "658--663",

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

issn = "1002-0071",

publisher = "Chinese Materials Research Society",

number = "6",

}

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 - http://www.scopus.com/inward/record.url?scp=85040539963&partnerID=8YFLogxK

U2 - 10.1016/j.pnsc.2017.05.002

DO - 10.1016/j.pnsc.2017.05.002

M3 - Article

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

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this