共 31 条
Photoelectrochemical hydrogen generation on TiO2 nanotube arrays sensitized with CdS@Sb2S3 core shell particles
被引:14
作者:
Carrera-Crespo, J. E.
[1
,2
]
Ramos-Sanchez, G.
[2
]
De la Luz, V.
[2
]
Gonzalez, F.
[3
]
Barrera, E.
[3
]
Gonzalez, I.
[2
]
机构:
[1] Univ Autonoma Nuevo Leon, Fac Ingn Civil, Dept Ecomat & Energia, Av Univ S-N Ciudad Univ, San Nicolas De Los Garza 66455, Nuevo Leon, Mexico
[2] Univ Autonoma Metropolitana Iztapalapa, Dept Quim, Av San Rafael Atlixco 186, Ciudad De Mexico 09340, Mexico
[3] Univ Autonoma Metropolitana Iztapalapa, Dept Ingn Proc & Hidraul, Av San Rafael Atlixco 186, Ciudad De Mexico 09340, Mexico
关键词:
Photoelectrochemical hydrogen production;
TiO2;
nanotubes;
Electrochemical/thermal/chemical synthesis method;
TNTs-CdS Sb2S3 photoanodes;
Sulfide-free electrolyte;
VISIBLE-LIGHT;
CDS;
PERFORMANCE;
FILMS;
DEPOSITION;
EFFICIENCY;
D O I:
10.1016/j.ijhydene.2017.09.064
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:
In this work, we propose the sensitization of TiO2 nanotube arrays with CdS and Sb2S3 (TNTs-CdS@Sb2S3), in order to improve the visible light absorbance, and the photo-electrochemical performance as photoanodes in photoelectrochemical cells for hydrogen production. It is the first time that these materials have been synthesized by an electrochemical/thermal/chemical method. TNTs-CdS Sb2S3 were characterized by X-Ray Diffraction, UV-Vis diffuse reflectance spectroscopy, scanning electron microscopy and energy-dispersive X-ray spectroscopy. The diffuse reflectance spectrum obtained for TNTs-CdS@Sb2S3 confirms a total coverage of the firstly electrodeposited Cd particles by Sb forming a core shell type structure. The photoelectrochemical behavior of the TNTs-CdS Sb2S3 photoelectrodes and their hydrogen production capacity, were evaluated in a homemade H-type photoelectrochemical cell using a sulfide-free electrolyte. By performing gas chromatography experiments, it was determined a higher hydrogen production using the TNTs-CdS Sb2S3 photoelectrode (10.23 mu mol h(-1)) being 1.5 and 4.5 times higher than that reached, for the TNTs-CdS and TNTs-Sb2S3 photoelectrodes, respectively. Additionally, the chalcogenide core@shell structure shows better photo-stability and photocurrent response than that of each of the components separately. (C) 2017 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
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页码:30249 / 30256
页数:8
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