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Structure of PtnNi Nanoparticles Electrocatalysts Investigated by X-ray Absorption Spectroscopy
Bao, Hongliang; Li, Jiong; Jiang, Luhua; Shang, Mingfeng; Zhang, Shuo; Jiang, Zheng; Wei, Xiangjun; Huang, Yuying; Sun, Gongquan; Wang, Jian-Qiang
2013
Source PublicationJOURNAL OF PHYSICAL CHEMISTRY C
ISSN1932-7447; 1932-7455
Volume117Issue:40Pages:CONCATENATE(Sheet1!I326,-Sheet1!J326)
AbstractCarbon 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.
Indexed BySCI
Language英语
Funding Project应物所项目组
WOS IDWOS:000326366800025
Citation statistics
Cited Times:12[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/13925
Collection中科院上海应用物理研究所2011-2019年
Recommended Citation
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):CONCATENATE(Sheet1!I326,-Sheet1!J326).
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),CONCATENATE(Sheet1!I326,-Sheet1!J326).
MLA Bao, Hongliang,et al."Structure of PtnNi Nanoparticles Electrocatalysts Investigated by X-ray Absorption Spectroscopy".JOURNAL OF PHYSICAL CHEMISTRY C 117.40(2013):CONCATENATE(Sheet1!I326,-Sheet1!J326).
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