One-nanometer-thick platinum-based nanowires with controllable surface structures

Fan, Xiaokun1,2; Luo, Shuiping1; Zhao, Xixia1; Wu, Xiaotong1,2; Luo, Zhishan1; Tang, Min1; Chen, Wen1; Song, Xing1; Quan, Zewei1

2019-07

10.1007/s12274-019-2428-2

Nano Research   影响因子和分区

1998-0124

1998-0000

Pt-based ultrathin nanowires (NWs) are considered as one of the most intriguing catalysts for fuel cells. However, the delicate controllability of surface structure of ultrathin NWs to regulate their catalytic performances is still a challenge. Here, two kinds of one-nanometer-thick Pt-based NWs with smooth surfaces (S-NWs) and rough surfaces (R-NWs) are demonstrated, in which the combined use of hexadecyltrimethylammonium bromide and oleylamine plays an essential role, as they could form soft-templates to direct the growth of NWs. Due to its high-density of low-coordinated sites on the surface, Pt-based R-NWs exhibit higher oxygen reduction reaction (ORR) activities but lower stabilities than corresponding S-NWs. Notably, Pt0.78Ni0.22 R-NWs possess the highest mass activity (1.07 A.mg(Pt)(-1)) and specific activity (1.02 mA.cm(-2)) among all Pt-based NWs. After 10,000 sweeping cycles, the mass activity still exhibits 5.7-fold enhancement compared to the corresponding commercial Pt/C. This work presents a new approach to delicately control the surface structure of ultrathin Pt-based NWs as advanced ORR catalysts.

platinum ultrathin nanowire surface structure oxygen reduction reaction electrtocatalyst

SCI ; EI

英语

第一 ; 通讯

China Postdoctoral Science Foundation[2018M641633]

Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics

Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied

WOS:000473174000028

TSINGHUA UNIV PRESS

20192006937897

Catalysts ; Coordination reactions ; Electrolytic reduction ; Fuel cells ; Nanowires ; Platinum ; Platinum alloys ; Surface structure

Precious Metals:547.1 ; Fuel Cells:702.2 ; Nanotechnology:761 ; Chemical Reactions:802.2 ; Chemical Agents and Basic Industrial Chemicals:803 ; Chemical Products Generally:804 ; Physical Properties of Gases, Liquids and Solids:931.2 ; Solid State Physics:933

Web of Science

1.Southern Univ Sci & Technol SUSTech, Dept Chem, Shenzhen 518055, Peoples R China
2.Peking Univ, Shenzhen Grad Sch, Sch Chem Biol & Biotechnol, Shenzhen 518055, Peoples R China

Fan, Xiaokun,Luo, Shuiping,Zhao, Xixia,et al. One-nanometer-thick platinum-based nanowires with controllable surface structures[J]. Nano Research,2019,12(7):1721-1726.

Fan, Xiaokun.,Luo, Shuiping.,Zhao, Xixia.,Wu, Xiaotong.,Luo, Zhishan.,...&Quan, Zewei.(2019).One-nanometer-thick platinum-based nanowires with controllable surface structures.Nano Research,12(7),1721-1726.

Fan, Xiaokun,et al."One-nanometer-thick platinum-based nanowires with controllable surface structures".Nano Research 12.7(2019):1721-1726.