Mesoporous Pd@Ru Core-Shell Nanorods for Hydrogen Evolution Reaction in Alkaline Solution

被引：65
|
作者：
Luo, Yiqi [1 ,2 ,3 ]
Luo, Xuan [4 ]
Wu, Gen [1 ,2 ]
Li, Zhijun [1 ,2 ]
Wang, Guanzhong [3 ]
Jiang, Bin [4 ]
Hu, Yanmin [1 ,2 ]
Chao, Tingting [1 ,2 ]
Ju, Huanxin [7 ]
Zhu, Junfa [7 ]
Zhuang, Zhongbin [6 ]
Wu, Yuen [1 ,2 ]
Hong, Xun [1 ,2 ]
Li, Yadong [1 ,2 ,5 ]
机构：
[1] Univ Sci & Technol China, CAN, Hefei 230026, Anhui, Peoples R China
[2] Univ Sci & Technol China, Dept Chem, Hefei 230026, Anhui, Peoples R China
[3] Univ Sci & Technol China, Dept Phys, Hefei 230026, Anhui, Peoples R China
[4] Univ Sci & Technol China, Dept Chem Phys, Hefei 230026, Anhui, Peoples R China
[5] Tsinghua Univ, Dept Chem, Beijing 100084, Peoples R China
[6] Beijing Univ Chem Technol, State Key Lab Organ Inorgan Composites, Beijing 100029, Peoples R China
[7] Univ Sci & Technol China, NSRL, Hefei 230029, Anhui, Peoples R China
来源：
ACS APPLIED MATERIALS & INTERFACES | 2018年 / 10卷 / 40期
基金：
中国国家自然科学基金; 国家重点研发计划;
关键词：
electrocatalysis; ruthenium; mesoporous; core-shell; element diffusion; CORE/SHELL NANOSHEETS; ELECTROCATALYSTS; CATALYSTS; NANOPARTICLES; NANOCRYSTALS; SEGREGATION; TEMPERATURE; EFFICIENT; EXCHANGE; OXYGEN;
D O I：
10.1021/acsami.8b09988
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The activity and stability of bimetallic nano catalysts strongly depend on their structures, compositions, and interfaces. Here, we report the synthesis of mesoporous Pd@Ru core-shell bimetallic nanorods composed of face-centered cubic Pd and hexagonal close-packed Ru. The nanorods have two types of cavities with diameters of 3.0 +/- 0.9 and 20.3 +/- 8.1 nm. The mutual diffusion process between Ru and Pd is characterized by the high-angle annular dark field scanning transmission electron microscopy, energy dispersive X-ray spectroscopy mapping, and the synchrotron radiation photoemission spectroscopy measurements. The mesoporous Pd@Ru nanorods exhibit superior catalytic performance and stability for hydrogen evolution reactions (overpotentials of 30 mV at 10 mA.cm(-2) in 1.0 M KOH solution and 37 mV at 10 mA.cm(-2) in 0.5 M H2SO4 solution).
引用
收藏
页码：34147 / 34152
页数：6
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