Electrochemical Hydrogen Evolution over Hydrothermally Synthesized Re-Doped MoS2 Flower-Like Microspheres

被引：33

作者：

Aliaga, Juan ^{[1
]}

Vera, Pablo ^{[1
]}

Araya, Juan ^{[2
]}

Ballesteros, Luis ^{[3
]}

Urzua, Julio ^{[4
]}

Farias, Mario ^{[5
]}

Paraguay-Delgado, Francisco ^{[6
]}

Alonso-Nunez, Gabriel ^{[5
]}

Gonzalez, Guillermo ^{[7
]}

Benavente, Eglantina ^{[1
]}

机构：

[1] Univ Tecnol Metropolitana, Dept Quim, Las Palmeras 3360, Santiago, Chile

[2] Univ Atacama, UDA, CIC, Copayapu 485, Copiapo, Chile

[3] Univ Autonoma Chile, Inst Ciencias Quim Aplicadas, El Llano Subercaseaux 2801, San Miguel, Chile

[4] Univ Catolica Norte, Fac Ciencias, Dept Ciencias Farmaceut, Casilla 1280, Antofagasta, Chile

[5] Univ Nacl Autonoma Mexico, Ctr Nanociencia & Nanotecnol, Ensenada 22860, Baja California, Mexico

[6] Ctr Invest Mat Avanzados SC, Dept Fis Mat, Miguel de Cervantes 120, Chihuahua 31136, Mexico

[7] Univ Chile, Fac Ciencias, Dept Quim, Las Palmeras 3425, Santiago, Chile

来源：

MOLECULES | 2019年 / 24卷 / 24期

关键词：

molybdenum disulfide; rhenium doping; hydrothermal synthesis; HER; hydrogen evolution reaction; CATALYTIC-ACTIVITY; NANOSHEETS; EDGES;

D O I：

10.3390/molecules24244631

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

In this research, we report a simple hydrothermal synthesis to prepare rhenium (Re)- doped MoS2 flower-like microspheres and the tuning of their structural, electronic, and electrocatalytic properties by modulating the insertion of Re. The obtained compounds were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), high-resolution transmission electron microscopy (HRTEM), Raman spectroscopy, and X-ray photoelectron spectroscopy (XPS). Structural, morphological, and chemical analyses confirmed the synthesis of poorly crystalline Re-doped MoS2 flower-like microspheres composed of few stacked layers. They exhibit enhanced hydrogen evolution reaction (HER) performance with low overpotential of 210 mV at current density of 10 mA/cm(2), with a small Tafel slope of 78 mV/dec. The enhanced catalytic HER performance can be ascribed to activation of MoS2 basal planes and by reduction in charge transfer resistance during HER upon doping.

引用

页数：12

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