| 纳米Pt-Ru/C电催化剂的制备 |
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| 引用本文： | 古国榜,冯春华,于书平,朱萍. 纳米Pt-Ru/C电催化剂的制备[J]. 华南理工大学学报(自然科学版), 2002, 30(11): 144-148 |
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| 作者姓名： | 古国榜 冯春华 于书平 朱萍 |
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| 作者单位： | 华南理工大学,应用化学系,广东,广州,510640 |
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| 基金项目： | 广东省重大科技攻关项目 (A110 0 4 0 1) |
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| 摘 要： | 以炭黑（Vulcan XC72)为载体，将铂钌混合氧化物胶体吸附在炭黑上，然后用氢气还原以制备Pt-Ru/C电催化剂，利用X－射线衍射（XRD）经及X－射线能谱（XPS）技术对样品进行表征，结果表明：在Pt-Ru/C中，面心立方结构中的部分铂原子被钌原子取代，铂钌合金原子的粒子大小在3nm左右，铂钌氧化物吸附在炭黑上后，两种金属的氧化态降低，可以通过氢气鼓泡的方法将其还原。
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| 关 键 词： | 纳米Pt－Ru／C 制备 电催化剂 炭黑载体 燃料电池 铂钌合金 催化性能 |
| 文章编号： | 1000-565X(2002)11-0144-05 |
| 修稿时间： | 2002-09-01 |
Preparation of Nano-Pt-Ru/C Electrocatalysts |
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| Gu Guo_bang Feng Chun_hua Yu Shu_ping Zhu Ping. Preparation of Nano-Pt-Ru/C Electrocatalysts[J]. Journal of South China University of Technology(Natural Science Edition), 2002, 30(11): 144-148 |
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| Authors: | Gu Guo_bang Feng Chun_hua Yu Shu_ping Zhu Ping |
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| Abstract: | Carbon black (Vulcan XC72) supported Pt_Ru alloys catalysts were prepared by firstly forming platinum oxides and ruthenium oxides clusters which were adsorbed on carbon black, followed by reduction of H 2. The samples were characterized by X_ray diffraction (XRD) and X_ray photoelectron spectroscopy (XPS) measurements. The XRD results indicate that part of Pt atoms in the Pt_Ru/C catalysts are replaced by Ru atoms on the lattice pointes of a face_centered cube. Pt_Ru particle size is about 3 nm . The XPS results show that after the adsorption process the mixed oxides of platinum and ruthenium are in a low oxidation state which can be reduced even by bubbling H 2. |
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| Keywords: | Pt_Ru/C electrocatalyst carbon black_supported |
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