Hybrid Pt/Au Nanowires: Synthesis and Electronic Structure
نویسندگان
چکیده
This letter reports the synthesis of a new type of noble metal/noble metal hybrid (Pt/Au hybrid nanowires) via galvanic replacement reaction between Pt nanowires and AuCl3. The width of nanowire component is about 2.3 ( 0.2 nm wide, and the diameter of Au component is about 4.5 nm ( 0.8 nm. More interestingly, by using X-ray absorption spectroscopy technique, charge transfer upon hybrids formation was observed, that d-charge depletion occurred at the Pt site, accompanied by d-charge gain at the Au site. The reported methodology to synthesize Pt/Au hybrid nanowires and study of electronic structure of Pt/Au hybrids will be of great importance in catalysis and materials science.
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