Pd coated MoS2 nanoflowers for highly efficient hydrogen evolution reaction under irradiation

被引：80
作者：
Li, B. B. [1 ]
Qiao, S. Z. [1 ]
Zheng, X. R. [1 ,3 ]
Yang, X. J. [1 ,2 ]
Cui, Z. D. [1 ]
Zhu, S. L. [1 ,2 ]
Li, Z. Y. [1 ,2 ]
Liang, Y. Q. [1 ,2 ]
机构：
[1] Tianjin Univ, Sch Mat Sci & Engn, Tianjin 300072, Peoples R China
[2] Tianjin Key Lab Composite & Funct Mat, Tianjin 300072, Peoples R China
[3] Minist Educ, Key Lab Adv Ceram & Machining Technol, Tianjin 300072, Peoples R China
来源：
JOURNAL OF POWER SOURCES | 2015年 / 284卷
基金：
中国国家自然科学基金;
关键词：
Electrocatalyst; Molybdenum disulfide; Pd nanoparticles; Hydrogen evolution reaction; MOLYBDENUM SULFIDE NANOPARTICLES; NANOSTRUCTURES; OXIDATION; GRAPHENE; CATALYST; COCATALYSTS; PALLADIUM; H-2;
D O I：
10.1016/j.jpowsour.2015.03.021
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Pd nanoparticles modified MoS2 nanoflowers assembled by lamellar nanosheets have been successfully synthesized by a facile hydrothermal method. They were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), atomic force microscopy (AFM, Nanoscope III), X-ray photoelectron spectroscopy (XPS), and evaluated as electrochemical catalysts for hydrogen evolution reaction (HER). It was found that Pd modified MoS2 (MoS2-Pd) without calcinated treatment exhibited high HER activity. The HER activity of this catalyst can be improved after visible-light irradiation. As a novel HER catalyst, the MoS2 Pd under illumination exhibited the best activity with the highest TOF value (0.013 s(-1)) and the lowest Tafel slope (39 mV dec(-1)). The results indicate that noble metal Pd plays an important role in promoting the HER activity. The increasing creation of electrons by visible-light irradiation is favorable for the electrochemical hydrogen adsorption reaction, which leads to more hydrogen formation. This work demonstrates the feasibility of increasing HER activity of MoS2-based catalysts by combining MoS2 with Pd noble metal nanoparticles. (C) 2015 Elsevier B.V. All rights reserved.
引用
收藏
页码：68 / 76
页数：9
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