Synthesis of Al/Cu core–shell particles through optimization of galvanic replacement method in alkaline solution
In this work, Al/Cu core–shell particles were successfully synthesized through an optimized galvanic replacement method. For this purpose, a uniform and dense copper layer was deposited on aluminum particles in an alkaline solution. The effects of four deposition factors, i. e. (i) molar ratio EDTA-...
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Published in | International journal of materials research Vol. 112; no. 6; pp. 439 - 447 |
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Main Authors | , , , , , , , , |
Format | Journal Article |
Language | English |
Published |
Stuttgart
De Gruyter
31.05.2021
Carl Hanser Verlag |
Subjects | |
Online Access | Get full text |
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Summary: | In this work, Al/Cu core–shell particles were successfully synthesized through an optimized galvanic replacement method. For this purpose, a uniform and dense copper layer was deposited on aluminum particles in an alkaline solution. The effects of four deposition factors, i. e. (i) molar ratio EDTA-2Na/CuSO
· 5H
O, (ii) molar ratio CuCl
/Al powder, (iii)
and (iv) temperature were systematically studied and optimized using the Taguchi orthogonal (L9) method. It was observed that molar ratio EDTA-2Na/CuSO
· 5H
O and temperature are the most affecting factors in the deposition process. By increasing their levels, copper deposition increases within a specified time. The X-ray diffraction and scanning electron microscopy/ energy-dispersive X-ray spectroscopy results revealed the formation of homogeneous nanostructured Cu shells around Al particles. The results revealed that to achieve maximum copper deposition on Al powder; molar ratio EDTA-2Na. 2H
O/CuSO
. 5H
O, molar ratio CuCl
/Al powder,
and temperature of the deposition bath should be 2.0, 0.05, 8.8 and 55 °C, respectively. |
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ISSN: | 2195-8556 1862-5282 2195-8556 |
DOI: | 10.1515/ijmr-2020-8167 |