Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7934773 | Progress in Natural Science: Materials International | 2017 | 6 Pages |
Abstract
Fine NP-AgAu (nanoporous AgAu) alloys with spongy structure was fabricated by chemical dealloying from rapidly solidified amorphous precursors Ag38.75âxCu38.75Si22.5Aux (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 5-10Â nm and the grain size of ligaments was 10-20Â nm. It also had the highest surface area of 106.83Â m2gâ1 and the best catalytic activity towards electro-oxidation of formaldehyde with the peak current of 665Â mAÂ mgâ1.
Keywords
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Physical Sciences and Engineering
Materials Science
Electronic, Optical and Magnetic Materials
Authors
Cuiting Li, Tao Zhang, Min Zhang, Yu Jin, Lei Zuo, Hongjie Xu, Ran Li,