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Title: Ag‐Enriched Ag‐Pd Bimetallic Nanoframes and Their Catalytic Properties

We report a facile synthesis of Ag‐enriched Ag‐Pd bimetallic nanoframes with ridges as thin as 1.7 nm. The synthesis involves co‐titration of aqueous AgNO3and Na2PdCl4solutions into an aqueous suspension of Ag nanocubes at room temperature in the presence of ascorbic acid and poly(vinyl pyrrolidone). The Ag and Pd atoms derived from the co‐reduction by ascorbic acid are co‐deposited on the edge and corner sites of Ag nanocubes for the generation of Ag@Ag‐Pd core–frame nanocubes. When subjected to H2O2etching, the Ag cores are selectively removed to generate Ag‐Pd bimetallic nanoframes made of ultrathin ridges enriched in Ag. In comparison to both the Ag nanocubes and Ag@Ag‐Pd core‐frame nanocubes, the Ag‐Pd bimetallic nanoframes exhibit markedly enhanced activity in catalyzing the reduction of 4‐nitrophenol by NaBH4.

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Author(s) / Creator(s):
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Publisher / Repository:
Wiley Blackwell (John Wiley & Sons)
Date Published:
Journal Name:
Medium: X Size: p. 494-499
p. 494-499
Sponsoring Org:
National Science Foundation
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