Citation: JIN Shengzhong, ZHANG Aiqing. Preparation and Characterization of Ru@Pt Core-Shell Nanoparticles with Shell in Atomic Thickness[J]. Chinese Journal of Applied Chemistry, ;2018, 35(2): 239-244. doi: 10.11944/j.issn.1000-0518.2018.02.170053 shu

Preparation and Characterization of Ru@Pt Core-Shell Nanoparticles with Shell in Atomic Thickness

JIN Shengzhong ,
ZHANG Aiqing ^,

College of Chemistry and Material Science, South Centre University for Nationalities, Wuhan 430070, China

Corresponding author: ZHANG Aiqing, 123269698@qq.com
Received Date: 1 March 2017
Revised Date: 27 March 2017
Accepted Date: 2 May 2017

Fund Project: the National Natural Science Foundation of China 51373201Supported by the National Natural Science Foundation of China(No.51373201)

Figures(4)

Through regulating the amount of PtCl₂ and the temperature of reduction, Ru@Pt core-shell monodisperse nanoparticles comprising a Ru core covered with an approximately 1.5 monolayer-thick shell of Pt atoms were synthesized by using a sequential polyol process with RuCl₃·xH₂O and PtCl₂ as precursors, ethylene glycol as the reductant and polyvinylpyrrolidone as the stabilizer. The microstructure, size-distribution, crystal structure and phase composition of nanoparticles were characterized by transmission electron microscopy(TEM), X-ray diffraction(XRD), X-ray photoelectron spectroscopy(XPS) and other analytical methods. The results indicate that the nanoparticles are uniformly distributed and spherical with 3.57 nm average size. The core is about 2.49 nm and the shell is about 0.55 nm. Pt shell has a nice crystalline phase which is mainly {111} lattice fringes. The production of electronic effect is found between Ru core and Pt shell, and this makes the diffraction peak of Pt and the electron binding energy of Ru and Pt produce a certain offset. The factors controlling the thickness of the shell of nanoparticles and strengthening the electronic effect between Ru core and Pt shell have been investigated preliminarily. The Ru@Pt core-shell nanoparticles are expected to have great potential in catalysis and other fields.
- sequential polyol method,
- Ru@Pt core-shell nanoparticles,
- atomic thickness of shell,
- electronic effect
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