单分散PtNi纳米粒子特殊的红外光学性能

doi:10.3866/PKU.WHXB201406193

Acta Phys. -Chim. Sin. ›› 2014, Vol. 30 ›› Issue (9): 1681-1687.doi: 10.3866/PKU.WHXB201406193

• ELECTROCHEMISTRY AND NEW ENERGY • Previous Articles Next Articles

Anomalous IR Optical Properties of Monodispersed PtNi Nanoparticles

ZHOU Xin-Wen¹, DU Juan-Juan¹, SUN Shi-Gang²

1. College of Biological and Pharmaceutical Science, China Three Gorges University, Yichang 443002, Hubei Province, P. R. China;
2. Department of Chemistry, College of Chemistry and Chemical Engineering, State Key Laboratory of Physical Chemistry of Solid Surface, Xiamen University, Xiamen 361005, Fujian Province, P. R. China

Received:2014-05-12 Revised:2014-06-19 Published:2014-08-29
Contact: ZHOU Xin-Wen, SUN Shi-Gang E-mail:xwzhou@ctgu.edu.cn;sgsun@xmu.edu.cn
Supported by:
The project was supported by the National Natural Science Foundation of China (21229301, 21403126) and Research Foundation of Education Bureau of Hubei Province, China (D20131302).

Abstract

Abstract:

Monodispersed PtNi nanoparticles were synthesized by galvanic displacement reaction and chemical reduction. The monodispersed PtNi nanoparticles demonstrate, by cyclic voltammetry, enhanced electrocatalytic properties for CO oxidation in 0.1 mol·L^-1 H₂SO₄ solution compared with bulk Pt electrode. In situ electrochemical Fourier transform infrared (FTIR) spectroscopy using CO as the probe molecule was studied. The CO adsorbed on either the PtNi/GC (glassy carbon) electrode or PtNi/Au electrode exhibits characteristics of a symmetric bipolar IR feature with a strong enhancement factor. The results of this paper contribute to the understanding of the special properties and origin of the anomalous IR properties of lowdimensional nanomaterials.

Key words: Galvanic displacement reaction, Monodispersed PtNi nanoparticle, Bipolar IR feature, In situ electrochemical FTIR spectroscopy

ZHOU Xin-Wen, DU Juan-Juan, SUN Shi-Gang. Anomalous IR Optical Properties of Monodispersed PtNi Nanoparticles[J]. Acta Phys. -Chim. Sin. 2014, 30(9), 1681-1687. doi: 10.3866/PKU.WHXB201406193

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Anomalous IR Optical Properties of Monodispersed PtNi Nanoparticles

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