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| 单分散PtNi纳米粒子特殊的红外光学性能 | |
| 引用本文： | 周新文,杜娟娟,孙世刚.单分散PtNi纳米粒子特殊的红外光学性能[J].物理化学学报,2001,30(9):1681-1687. |
| 作者姓名： | 周新文 杜娟娟 孙世刚 |
| 作者单位： | 1. 三峡大学生物与制药学院, 湖北宜昌 443002; 2. 厦门大学固体表面物理化学国家重点实验室, 化学化工学院化学系, 福建厦门 361005 |
| 基金项目： | 国家自然科学基金（21229301,21403126）和湖北省教育厅重点项目（D20131302）资助 |
| 摘 要： | 采用电位置换反应以及化学还原法制备了单分散PtNi 纳米粒子,循环伏安结果显示该纳米粒子在0.1mol·L-1硫酸介质中对CO的氧化表现出比本体Pt 电极更好的电催化活性. 以CO为探针分子,采用电化学原位红外光谱研究了PtNi 纳米粒子上的特殊红外光学性能. 结果表明,PtNi 纳米粒子无论是在玻碳电极还是在金电极上,均表现出对称的双极谱峰,同时给出很强的增强效应. 论文研究结果有助于进一步了解低维纳米材料特殊红外性能的本质. |
| 关 键 词： | 电位置换反应 单分散PtNi 纳米粒子 双极红外特征 原位电化学傅里叶变换红外光谱 |
| 收稿时间： | 2014-05-12 |
| 修稿时间： | 2014-06-19 |
Anomalous IR Optical Properties of Monodispersed PtNi Nanoparticles |
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| ZHOU Xin-Wen,DU Juan-Juan,SUN Shi-Gang.Anomalous IR Optical Properties of Monodispersed PtNi Nanoparticles[J].Acta Physico-Chimica Sinica,2001,30(9):1681-1687. | |
| Authors: | ZHOU Xin-Wen DU Juan-Juan SUN Shi-Gang |
| Institution: | 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 |
| 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. |
| Keywords: | Galvanic displacement reaction Monodispersed PtNi nanoparticle Bipolar IR feature In situ electrochemical FTIR spectroscopy' ') In situ electrochemical FTIR spectroscopy" target="_blank">">In situ electrochemical FTIR spectroscopy |
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