Structure of PtnNi Nanoparticles Electrocatalysts Investigated by X-ray Absorption Spectroscopy
文献类型：期刊论文
| 作者 | Bao, Hongliang1,2; Li, Jiong1; Jiang, Luhua3; Shang, Mingfeng1; Zhang, Shuo1; Jiang, Zheng1; Wei, Xiangjun1; Huang, Yuying1,2; Sun, Gongquan3; Wang, Jian-Qiang1,2 |
| 刊名 | journal of physical chemistry c
 |
| 出版日期 | 2013-10-10 |
| 卷号 | 117期号:40页码:20584-20591 |
| 英文摘要 | carbon supported pt-ni nanoparticles (nps) electrocatalysts with nominal pt/ni atomic ratios of 3:1, 2:1, and 1:1, denoted as pt3ni/c, pt2ni/c, and pt1ni/c, respectively, were obtained by a modified polyol process. the structure of ptnni/c (n = 3, 2, i) electrocatalysts was studied by using an x-ray absorption spectroscopy technique combined with x-ray diffraction and transmission electron microscopy. significantly, the nps of pt3ni/c in air are demonstrated to have a quasi core-shell structure consisting of a core of metallic pt surrounded by many small niox clusters. in contrast, both pt2ni/c and pt1ni/c are demonstrated to have an alloy structure with partial oxidation on the surface. under the atmosphere of h-2 at 393 k, the ptnni/c became the expected bimetallic alloy. at last, we discuss the effect of ni amount on the structure of ptnni/c and estimate their possible catalytic activity for methanol oxidation reaction. our results further confirmed that the structure of pt-ni nps can be influenced by ni amount and this effect may be enlarged by environment effects. |
| WOS标题词 | science & technology ; physical sciences ; technology |
| 类目[WOS] | chemistry, physical ; nanoscience & nanotechnology ; materials science, multidisciplinary |
| 研究领域[WOS] | chemistry ; science & technology - other topics ; materials science |
| 关键词[WOS] | methanol oxidation reaction ; oxygen reduction reaction ; pt-ni ; bimetallic nanoparticles ; fuel-cells ; ptxni1-x nanoparticles ; supported catalysts ; alloy nanoparticles ; surface-properties ; platinum alloys |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000326366800025 |
| 公开日期 | 2015-11-10 |
| 源URL | [http://159.226.238.44/handle/321008/137762]  |
| 专题 | 大连化学物理研究所_中国科学院大连化学物理研究所 |
| 作者单位 | 1.Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai Synchrotron Radiat Facil, Shanghai 201204, Peoples R China 2.Chinese Acad Sci, Shanghai Inst Appl Phys, Key Lab Interfacial Phys & Technol, Shanghai 201204, Peoples R China 3.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, Div Fuel Cell & Battery, Dalian 116023, Peoples R China |
| 推荐引用方式 GB/T 7714 | Bao, Hongliang,Li, Jiong,Jiang, Luhua,et al. Structure of PtnNi Nanoparticles Electrocatalysts Investigated by X-ray Absorption Spectroscopy[J]. journal of physical chemistry c,2013,117(40):20584-20591. |
| APA | Bao, Hongliang.,Li, Jiong.,Jiang, Luhua.,Shang, Mingfeng.,Zhang, Shuo.,...&Wang, Jian-Qiang.(2013).Structure of PtnNi Nanoparticles Electrocatalysts Investigated by X-ray Absorption Spectroscopy.journal of physical chemistry c,117(40),20584-20591. |
| MLA | Bao, Hongliang,et al."Structure of PtnNi Nanoparticles Electrocatalysts Investigated by X-ray Absorption Spectroscopy".journal of physical chemistry c 117.40(2013):20584-20591. |
入库方式： OAI收割
来源：大连化学物理研究所
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