Synthesis and Characterization of Dendrimer‐Encapsulated Bimetallic Core‐Shell PdPt Nanoparticles | Zendy

Li Guoping | Zendy; Lu Wenting | Zendy; Luo Yunjun | Zendy; Xia Min | Zendy; Chai Chunpeng | Zendy; Wang Xiaoqing | Zendy

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Synthesis and Characterization of Dendrimer‐Encapsulated Bimetallic Core‐Shell PdPt Nanoparticles

Author(s) -

Li Guoping,

Lu Wenting,

Luo Yunjun,

Xia Min,

Chai Chunpeng,

Wang Xiaoqing

Publication year - 2012

Publication title -

chinese journal of chemistry

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.28

H-Index - 41

eISSN - 1614-7065

pISSN - 1001-604X

DOI - 10.1002/cjoc.201100170

Subject(s) - bimetallic strip , dendrimer , chemistry , nanoparticle , transmission electron microscopy , infrared spectroscopy , core (optical fiber) , nanotechnology , spectroscopy , shell (structure) , crystallography , metal , polymer chemistry , organic chemistry , composite material , materials science , physics , quantum mechanics

Using a successive method, PAMAM dendrimer‐encapsulated bimetallic PdPt nanoparticles have been successfully prepared with core‐shell structures (Pd@Pt DENs). Evidenced by UV‐vis spectra, high resolution transmission electron microscopy, and X‐ray energy dispersive spectroscopy (EDS), the obtained Pd@Pt DENs are monodispersed and located inside the cavity of dendrimers, and they show a different structure from monometallic Pt or Pd and alloy PdPt DENs. The core‐shell structure of Pd@Pt DENs is further confirmed by infrared measurements with carbon monoxide (IR‐CO) probe. In order to prepare Pd@Pt DENs, a required Pd/Pt ratio of 1:2 is determined for the Pt shell to cover the Pd core completely. Finally, a mechanism for the formation of Pd@Pt DENs is proposed.

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