Synthesis of defect-rich palladium-tin alloy nanochain networks for formic acid oxidation

[Display omitted] Unique and novel Pd4Sn nanochain networks were successfully synthesized with an average diameter of 5 nm, rendering a modified Pd electronic structure with rich defects such as atomic corners, steps or ledges as catalytic active sites for great enhancement of charge transfer and el...

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Bibliographic Details
Published in:Journal of colloid and interface science 2018-11, Vol.530, p.189-195
Main Authors: Gong, Yuyan, Liu, Xuehua, Gong, Yangyang, Wu, Diben, Xu, Binghui, Bi, Lei, Zhang, Lian Ying, Zhao, X.S.
Format: Article
Language:English
Subjects:
Active sites
Electrocatalyst
Formic acid oxidation reaction
Fuel cells
Pd4Sn nanochain networks
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Summary:[Display omitted] Unique and novel Pd4Sn nanochain networks were successfully synthesized with an average diameter of 5 nm, rendering a modified Pd electronic structure with rich defects such as atomic corners, steps or ledges as catalytic active sites for great enhancement of charge transfer and electrode kinetics. The prepared Pd4Sn nanochain networks held an electrochemically active surface area as high as 119.40 m2 g−1, and exhibited higher catalytic activity and stability toward formic acid oxidation compared with Pd3Sn nanochain networks, Pd5Sn nanochain networks, Pd4Sn dendrites and Pd/C. The fundamental insight of the enhancement mechanism is discussed, and this work offers a novel, less expensive but highly active catalyst for direct formic acid fuel cells.
ISSN:0021-9797
1095-7103
DOI:10.1016/j.jcis.2018.06.074